STMC FAQs
Welcome to the STMC FAQs
In this area of our site, you will find the answers to the frequently asked questions, as well as answers to How do I and Did you know questions. Please feel free to post a comment on any Q&A.
Here is a list of the top categories and their sub-categories. Select a category to see the Q&As within.
| Category | Q&A | Last Q&A published |
|
Questions regarding STMC membership. |
11 | Where is the STMC Application Form? |
|
General information about the website! |
9 | How do I become a sponsor? |
|
Ever want to go to the track but were hesitant because you didn't know exactly what to do? Read this. |
7 | What do I do at the starting line? |
Here is a list of the last Q&As that were published.
[ STMC Website ]
Requested and Answered by Nino on 05-Jun-2008 11:58 (10 reads)
The sponsor rates are as follows:
$125 for 6 months or $200 for 12 months.
You must submit all the information to an officer. We will need the following:
Software version of logo
Contact person
Phone number
Email address
Physical Address
Short paragraph describing your business
Feel free to message any of the Officers/Admins about it!
$125 for 6 months or $200 for 12 months.
You must submit all the information to an officer. We will need the following:
Software version of logo
Contact person
Phone number
Email address
Physical Address
Short paragraph describing your business
Feel free to message any of the Officers/Admins about it!
[ STMC Membership ]
Requested and Answered by Nino on 29-Jan-2008 11:11 (116 reads)
You can download the Membership Application HERE (Right-Click, Save As).
If you do not have a PDF reader - HERE is a small one that you just run (Right-Click, Save As).
Be sure to fill it out completely (you can type in the fields) and email it to moderators@southtexasmustangclub.com.
OR
Fill it out, print it and get it to an officer at a meeting/hangout!
If you do not have a PDF reader - HERE is a small one that you just run (Right-Click, Save As).
Be sure to fill it out completely (you can type in the fields) and email it to moderators@southtexasmustangclub.com.
OR
Fill it out, print it and get it to an officer at a meeting/hangout!
[ STMC Membership ]
Requested and Answered by KnightRider on 08-May-2007 23:31 (117 reads)
Contact the STMC Secretary. They have all of the member information. The STMC Secretary can be located HERE.
[ STMC Website ]
Requested and Answered by Nino on 11-Jan-2007 14:17 (163 reads)
P.M. Nino - He'll take care of it!
[ STMC Website ]
Requested and Answered by Nino on 28-Jul-2006 12:09 (332 reads)
Read this and see if it helps, if not proceed with this:
Three easy steps. Once you do them a few times, you'll get used to it!
1. HOST the picture or find one that's hosted.
2. Get the address to the picture that's hosted.
3. Post the address with the correct "code".
STEP 1: Here are the steps to HOST your picture:
First, find an online image hosting site. I use http://www.photobucket.com. It's free, fast and it provides you with links to copy/paste right into posts/web-pages.

Next, you have to upload a picture from your computer to the image server.

Finally, you have to copy the link to the picture and paste it into your post. (Remember, to use LOWER case tags, the STMC website is case sensitive)

STEP 2: Here are the steps to find your hosted image's code.
Most of the time, if you host the picture using an online service (photobucket or imageshack), they provide links for you to "copy/paste".
If you find a picture you want to use and it's already hosted (online):
Right click the picture and select "Properties". You should see an address or "url". This is what you want to copy. It will usually end in "xxxx.JPG, xxxx.GIF or sometimes xxxx.PNG.
STEP 3: The last step is to use your hosted picture's address in the code for the website.
Enter the code into your post, signature, PM...whatever.
[ img ]http://www.yoursite.com/photos/photo.jpg[ /img ]
Be sure the stuff in the brackets is lower case in the brackets and has NO spaces!! I had to use spaces so that the code will show up for this tutorial. Also, be sure that "Enable Xoops Code" is checked (located just above the message submit button)
Three easy steps. Once you do them a few times, you'll get used to it!
1. HOST the picture or find one that's hosted.
2. Get the address to the picture that's hosted.
3. Post the address with the correct "code".
STEP 1: Here are the steps to HOST your picture:
First, find an online image hosting site. I use http://www.photobucket.com. It's free, fast and it provides you with links to copy/paste right into posts/web-pages.

Next, you have to upload a picture from your computer to the image server.

Finally, you have to copy the link to the picture and paste it into your post. (Remember, to use LOWER case tags, the STMC website is case sensitive)

STEP 2: Here are the steps to find your hosted image's code.
Most of the time, if you host the picture using an online service (photobucket or imageshack), they provide links for you to "copy/paste".
If you find a picture you want to use and it's already hosted (online):
Right click the picture and select "Properties". You should see an address or "url". This is what you want to copy. It will usually end in "xxxx.JPG, xxxx.GIF or sometimes xxxx.PNG.
STEP 3: The last step is to use your hosted picture's address in the code for the website.
Enter the code into your post, signature, PM...whatever.
[ img ]http://www.yoursite.com/photos/photo.jpg[ /img ]
Be sure the stuff in the brackets is lower case in the brackets and has NO spaces!! I had to use spaces so that the code will show up for this tutorial. Also, be sure that "Enable Xoops Code" is checked (located just above the message submit button)
[ STMC Website ]
Requested and Answered by Nino on 26-Jul-2006 08:24 (176 reads)
Edit your profile - look for a section that says "ALWAYS ATTACH MY SIGNATURE" and make sure it's set to "ON".
If that doesn't fix it, check your tags, make sure you used the correct slash ("/" not "\") and make sure the letters are all lower-case.
If all else fails, PM the webmaster.
If that doesn't fix it, check your tags, make sure you used the correct slash ("/" not "\") and make sure the letters are all lower-case.
If all else fails, PM the webmaster.
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 11:24 (233 reads)
The Starting Line
The starting line is composed of two pair of photocells, one for each lane. The photocells detect your car when your tire interupts the light beam that crosses the lane. Tracks used to use bright lights and photocell receivers, but now many tracks are using the Compulink timing system which uses infrared beams. These beams are much better for drag racing. Drivers used to paint their wheels or put shoe polish on them to dull the bright, reflective surface. The old lights and photocell combination would sometimes pick up reflected light from the wheel, and then not "see" the tire. The infrared beams have no such problem. The timing system down the track uses a system of beams and reflectors, too. When the beam is complete (ie, the beam is reflected back to its origin), nothing is blocking it. When the cycle is broken, the beam has been interupted, and thus a tire has been sensed.

The two photocells are linked to the Tree: the Pre-Stage, and the Stage lights.
When the car inches forward and blocks the first photocell, the Pre-Stage light comes on, indicating that the driver is close to the starting line. Most tracks have a rollout, or distance between the Pre-Stage and Stage beams of 6-8". The driver can now nudge the car forward until the car blocks the Stage beam, thus lighting the Stage bulbs on the Tree. This means that the driver is on the starting line, and is presumably ready to go. The driver also has the option of deep-staging, however, which means he bumps his car forward even more until the Pre-Stage bulb goes out. This means that his tire has just left the Pre-Stage beam.
The starting line is composed of two pair of photocells, one for each lane. The photocells detect your car when your tire interupts the light beam that crosses the lane. Tracks used to use bright lights and photocell receivers, but now many tracks are using the Compulink timing system which uses infrared beams. These beams are much better for drag racing. Drivers used to paint their wheels or put shoe polish on them to dull the bright, reflective surface. The old lights and photocell combination would sometimes pick up reflected light from the wheel, and then not "see" the tire. The infrared beams have no such problem. The timing system down the track uses a system of beams and reflectors, too. When the beam is complete (ie, the beam is reflected back to its origin), nothing is blocking it. When the cycle is broken, the beam has been interupted, and thus a tire has been sensed.

The two photocells are linked to the Tree: the Pre-Stage, and the Stage lights.
When the car inches forward and blocks the first photocell, the Pre-Stage light comes on, indicating that the driver is close to the starting line. Most tracks have a rollout, or distance between the Pre-Stage and Stage beams of 6-8". The driver can now nudge the car forward until the car blocks the Stage beam, thus lighting the Stage bulbs on the Tree. This means that the driver is on the starting line, and is presumably ready to go. The driver also has the option of deep-staging, however, which means he bumps his car forward even more until the Pre-Stage bulb goes out. This means that his tire has just left the Pre-Stage beam.
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 11:17 (147 reads)
I found this and thought it would be helpful for the new folks who have never been to the track.
You are going to need a helmet if you run 13.99 or faster.
When you get to track, open hood and let her cool down from trip.
You will now have to register and bring car to the "Tech-In" lane
Tire Pressure: STOCK TIRES = 50psi in front. This allows less rolling resistance. 25psi = rear. DRAGRADIALS = 12-15 psi.
Enter Staging lanes and wait for your turn
RELAX. Be comfortable. EVERYBODY has a "1st time"
When it's your turn, wait for the "green light" or for the operator to tell you to pull into water box. As you are rolling up to the water box, go around it if you can and back up into it. Unless you have skinnies on the front, you will bring water up to the start and it will drip off the front tires. If you can't, don't worry. Drive thru it. When you're lined up, give the tires a small spin. IMPORTANT: After "licking" your tires in the water box, pull forward a few feet and do your burnout there - where it's dry. If you do your burnout in the water box, you'll fling water into your wheel well and when you're staging, it will drip down onto your tires and the track. You don't want that!You dont have to go nuts here a good smoking will do. I would burn till I see smoke then, maybe 5 seconds longer in Second gear. This will be difficult without line lock. You will have to use first gear if your using the brakes. Also,If your tires are Brand new, I would drive around on them for a day. You need to scuff them in. You will not get your best 60ft's the first time out with them unless they are scuffed in. A heavy Burnout will be necessary.
Pull up and watch the yellow lights.Pull up to the first yellow and stop. Now slowly move forward till second yellow comes on and stop. You are now staged and ready.
VERY IMPORTANT! You new Guys get this wrong all the time. Reaction time means nothing if you are just trying to get your best ET. The timer Does not start till you move and brake the first laser beam. You could wait for an HOUR and you would still get the correct ET. Reaction time is for racing your oponent or in a class. You do want to try and go right on the green. You will red light if before, but this does not affect your ET. I usually wait to the fourth yellow comes on then I go.
Street tires should let you launch between 2000 and 2500. ET Drag Radials will let you between 4500 to 5000.This will vary from car to car and track conditions. Standard, hold clutch in, and rev motor to desired RPM. Automatic, press brake and hold down gas to give the car "load" or to get it rev'ing JUST before the tires squeal. This is called "STALLING".
If you are realy looking for best times try and go on a day that the track is treated. You will do your best on this day. You'll see the track operators spraying stuff and "mopping" the track starting area in between runs.
60 FT Numbers are your most critical tunning info. Every
tenth in the 60ft will yield 2 tenths in the Quarter. Try and get your 60ft's down. Most are around 2.0 with stock tires. 1.5's is what we are trying to get into or past.
Find your max RPM HP table on your dyno sheet and that is were you want to shift at. Try to get your shifts down smooth.
Hope that helps!!
tenth in the 60ft will yield 2 tenths in the Quarter. Try and get your 60ft's down. Most are around 2.0 with stock tires. 1.5's is what we are trying to get into or past.
Hope that helps!!
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 11:01 (132 reads)
The Timeslip
After you make a run, the guy in the little booth (ET booth) after the turnout at the
end of the track, will hand you a piece of paper with numbers all over it. This paper is called the timeslip.
The timeslip provides a wealth of information
about a run. It tells you how well you launched, how quick and fast you went at various points on the track, and what your final ET and mile per hour were. And
if you were drag racing an opponent, the timeslip tells you how he did, also.
Lane
Shows which lane you ran in.
Car Number
Cars
are assigned a number and marked on windows.
Dial-In
This is the elapsed time you think your car will run.
Reaction Time
This
tells you how quickly you reacted to the green light on the Christmas Tree. If running a Full Tree, it is set as .500 second. You want your RT to be at or as
close to .500 as possible. If you react faster than that, you've just redlighted.
60, 330, 660, 1,000 ET, and MPH Times
These figures give you
elapsed times at the 60 foot, 330 foot, 660 foot (1/8 mile), and 1,000 foot marks. You also get the mile per hour figure.
1/4 and MPH Quarter Mile ET
and MPH
These are your finishing elapsed time and mile per hour numbers. When it comes to bragging rights, these are the ones that count
After you make a run, the guy in the little booth (ET booth) after the turnout at the
end of the track, will hand you a piece of paper with numbers all over it. This paper is called the timeslip.
The timeslip provides a wealth of information
about a run. It tells you how well you launched, how quick and fast you went at various points on the track, and what your final ET and mile per hour were. And
if you were drag racing an opponent, the timeslip tells you how he did, also.
Lane
Shows which lane you ran in.
Car Number
Cars
are assigned a number and marked on windows.
Dial-In
This is the elapsed time you think your car will run.
Reaction Time
This
tells you how quickly you reacted to the green light on the Christmas Tree. If running a Full Tree, it is set as .500 second. You want your RT to be at or as
close to .500 as possible. If you react faster than that, you've just redlighted.
60, 330, 660, 1,000 ET, and MPH Times
These figures give you
elapsed times at the 60 foot, 330 foot, 660 foot (1/8 mile), and 1,000 foot marks. You also get the mile per hour figure.
1/4 and MPH Quarter Mile ET
and MPH
These are your finishing elapsed time and mile per hour numbers. When it comes to bragging rights, these are the ones that count
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 10:50 (161 reads)
Keep in mind that these are only partial listings of rules and you should be
aware of all rules, guidelines, and requirements set up by the official IHRA sanctioning
body.
___________________________________________________________________________
ALL DRIVERS MUST:
be at least 16 year of
age.
possess a valid official driver's license.
be of sound mind and body to properly operate vehicle. NO ALCOHOL OR ILLEGAL DRUG USE BEFORE OR
WHILE ATTEMPTING TO OPERATE VEHICLE.
abide by and agree to follow all safety rules established by IHRA and this track facility.
be wearing proper
attire for racing. (need to be wearing minimum of pants, shirt, closed toe shoes) NO SHORTS, NO SKIRTS, NO SLEEVELESS SHIRTS, NO SANDALS
REGISTER AND SIGN
IN WITH SAFETY INSPECTION OFFICIALS BEFORE ATTEMPTING TO RUN ON TRACK
___________________________________________________________________________
ALL
CARS regardless of run time MUST:
have battery tied down and secured. if battery is relocated, must have an electric cut off switch on rear of vehicle,
properly labeled.
have catch can for radiator.
have exterior functioning door handle to driver's side access.
have properly mounted and
functioning safety belts.
have at least one properly functioning taillight.
have all wheel lugs in place.
not have any leaking of fluids i.e.
fuel, radiator, oil, etc.
have neutral safety switch properly working.
all drivers in convertibles must wear helmet.
if running nitrous oxide
system, be sure to inform inspecting official. System must be complete and properly installed.
if fuel cell is added to car, must be proper fuel cell,
properly vented, grounded, and be mounted such that top of cell is not higher than top of rear tires.
___________________________________________________________________________
REQUIREMENTS FOR VEHICLE ACCORDING TO RUN TIMES:
(all requirements
for slower classes apply to faster classes)
14.00 or slower 1/4 mile (8.60 or slower 1/8)
see rules (ALL CARS REGARDLESS OF RUNTIME
MUST)
all drivers or riders in convertibles must wear helmet
drive shaft loop required on cars running with racing slicks
11.50 to 13.99
1/4 mile (7.50 to 8.59 1/8)
helmet required SNELL 90 or newer
drive shaft loop required
roll bar mandatory on all
convertibles
11.00 to 11.49 1/4 mile (7.00 to 7.49 1/8) or faster than 135MPH
roll bar with padding
steel valve stems on wheels
mandatory
SFI 16.1 5 point driver restraint system (2 year expiration)
SFI 3.2A/1 flame retardant jacket
properly secured fire extinguisher
required
all open bodied vehicles require arm restraints, SFI 3.3/1 gloves, helmet must be full face shield or wear goggles
10.00 to 10.99 1/4
mile (6.50 to 6.99 1/8) or faster than 135MPH
SFI 4.1 transmission shield required
SFI 18.1 harmonic balancer required
Aftermarket axles
required
entries with 2 wheel brakes or running 150MPH 1/4 (125MPH 1/8) require parachute
0 to 9.99 1/4 mile (0 to 6.49 1/8)
roll cage
mandatory (chassis certification required on 9.00 1/4 (6.00 1/8)
IHRA competition license required
SFI 29.1 flexplate and SFI 30.1 shield
required
entries running 150MPH 1/4 (125MPH 1/8) require parachute
entries running 8.49 1/4 (5.49 1/8) require dual master cylinder, (closed body
cars require fire system) require driver suit SFI 3.2A/5, neck collar SFI 3.3, all others require SFI 3.2A/5 jacket.
open bodied cars require SFI 3.2A/5
pants, SFI 3.3/5 gloves and SFI 3.3 arm restraints.
MOTORCYCLES
Motorcycles are no longer allowed to run at Edinburg International
Racetrack.
aware of all rules, guidelines, and requirements set up by the official IHRA sanctioning
body.
___________________________________________________________________________
ALL DRIVERS MUST:
age.
WHILE ATTEMPTING TO OPERATE VEHICLE.
attire for racing. (need to be wearing minimum of pants, shirt, closed toe shoes) NO SHORTS, NO SKIRTS, NO SLEEVELESS SHIRTS, NO SANDALS
IN WITH SAFETY INSPECTION OFFICIALS BEFORE ATTEMPTING TO RUN ON TRACK
___________________________________________________________________________
ALL
CARS regardless of run time MUST:
properly labeled.
functioning safety belts.
fuel, radiator, oil, etc.
system, be sure to inform inspecting official. System must be complete and properly installed.
properly vented, grounded, and be mounted such that top of cell is not higher than top of rear tires.
___________________________________________________________________________
REQUIREMENTS FOR VEHICLE ACCORDING TO RUN TIMES:
(all requirements
for slower classes apply to faster classes)
14.00 or slower 1/4 mile (8.60 or slower 1/8)
MUST)
11.50 to 13.99
1/4 mile (7.50 to 8.59 1/8)
convertibles
11.00 to 11.49 1/4 mile (7.00 to 7.49 1/8) or faster than 135MPH
mandatory
required
10.00 to 10.99 1/4
mile (6.50 to 6.99 1/8) or faster than 135MPH
required
0 to 9.99 1/4 mile (0 to 6.49 1/8)
mandatory (chassis certification required on 9.00 1/4 (6.00 1/8)
required
cars require fire system) require driver suit SFI 3.2A/5, neck collar SFI 3.3, all others require SFI 3.2A/5 jacket.
pants, SFI 3.3/5 gloves and SFI 3.3 arm restraints.
MOTORCYCLES
Racetrack.
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 10:46 (159 reads)
Drag Racing Definitions
Break-out or run-under
When a car runs quicker than its
dial-in, it is called a break out. That driver loses the race unless the other car breaks out by more than he did, (or red-lighted). This is called a
double-breakout.
"Cherry Picker"
A cherry picker is that guy that sits in the back of the lanes and purposefully tries to "pair-up" with whomever
he thinks will be the easiest win.
Delay Box
The "box", as it is usually called is an electronic device to aid the driver. The driver can dial a
number into the box, called the delay. Usually used in conjunction with a transmission brake and two-step, the driver can hold down a button mounted on his
steering wheel, activating the transbrake and two step, and then let go of the button the instant he sees the "first flash" of amber from the first bulb. The delay
box will then count the thousandths of a second dictated by the driver, and then release the transbrake and two-step.
The driver can adjust his reaction
times by changing the number on the delay box. The theory is that a driver instinctively reacting to an initial signal (the first amber) will be quicker and more
consistent than a driver that must train himself to wait for the third amber. This is indeed often the case, making the box a controversial (but legal) tool in
many classes.
Dial-in
A dial-in is your educated guess or prediction of your car's ET. Dial-ins are used to handicap cars in eliminations. When
two cars race, the two dial-ins are subtracted, and the slower car is given the difference in a head start. The head start is shown by the Christmas Tree coming
down in his lane first. The theory is that if both drivers have identical reaction times, and both hit their dials exactly, they will meet on the finish line at
exactly the same time.
Example: You made time trials with these ET's: 15.05, 15.07, 15.01. If you decide to dial-in at 15.00, and your opponent dials a
12.00, you will receive a 3.00 second head start.
Dumping
Purposefully lifting or hitting the brakes with the intention of letting your opponent
hit the finish line first, hopefully to force him to break out while you do not.
ET
Elapsed Time (ET) is the time between the car starting and it
reaching the end of the 1/4 mile. A car "starts" or triggers the ET timer by reconnecting the staging beam (ie, when it leaves the starting line). Starting the ET
timer is identical to stopping the Reaction Time (R/T) timer.
"Killing the tree"
This phrase is said to describe a driver that has been getting
consistently great reaction times. Also, "I nailed the tree on him" means that you had a much better light than your opponent.
Lights
Lights has
two different meanings, which are contextual. It can either refer to the starting lights on the Christmas Tree, or the top-end 'lights' or 'eyes', which is
talking about the photocells near the finish line (ie, the last 60 feet). "The lights came down..." refers to the tree, whereas, "I was ahead of him going through
the lights" refers to the top end.
Line-lock
A line-lock allows the driver to set the brakes on just one set of tires. Usually, racers put a
line-lock on the front tires in order to aid their burnouts. They set the brake, hold a button, and then release the brake pedal. The brakes will release on the
back, but hold the front brakes until the button is released. Some people try to simulate a transbrake by having four-wheel line-locks. This allows the driver to
hold the brakes with the button on the line, instead of his foot.
Reaction time (R/T)
Indicates how much delay occurs from the last Yellow light
being turned on and the car starting the Elapsed Time timer. The green light is turned on .500 seconds (.400 on Pro tree) after the last yellow, so a R/T value of
.500 indicates a "perfect light". A value less than .500 indicates the car started before the Green light, which is an illegal start activating the the Red light.
R/T values greater than .500 indicate how much delay occured from the Green light coming on to when the car started. The larger the delay, the greater opportunity
for an opponent to start before you and gain an advantage.
Red-lighting or "bulb"
A red-light occurs if a car starts before the green light comes
on. During competition, this will immediately give the win to the opponent. Racer's will often say, "He bulbed it away," meaning he lost because he
red-lighted.
Sandbagging
This is the practice of dialing-in an ET that is much slower than the ET's that your car runs so that you should always
hit the finish line first. In order to be an effective sandbagger, you usually must have a better reaction time than your opponent, and then hit the finish line
just before your opponent to avoid breaking out.
Stage and Pre-Stage
Each car is required to line-up their car at the starting line. The starting
line consists of a light beam which is about 1" off the ground. Once a car moves forward enough for its front tire to block the beam from reaching the other side,
the car is considered "staged". Once both cars have staged, the race can begin.
To assist drivers in staging, a "pre-stage" beam is also used. This beam is
located a few inches behind the "stage" beam. This lets drivers know when they are getting close to the stage beam.
Top-end
The finish line area:
this is where the bracket racer has to make his decisions as to what tactics he is going to use to try to win the race. Will he need to hit the brakes? Will his
opponent?
Transbrake A transbrake is a device which allows a car to remain stationary even when the motor is under power. It works by placing the
transmission in 1st gear and Reverse at the same time. Since both gears have the same ratio, but it opposite directions, the car cannot move. The transbrake can be
released with a button, which releases the Reverse gear. Although they make for powerful launches, transbrakes can be hard on transmissions.
Trap
speed
Trap Speed refers to a car's MPH measured during the last 60 feet of the 1/4-mile. By knowing the weight of a car, the trap speed is a good indicator
of how much horsepower an engine is making.
Two-Step
A two-step is an electrical ignition device that will "cut out" cylinders at random, after
the engine rpm tries to exceed a certain point. This is basically a rev-limiter. The driver can set the low-side rpm of the two-step to be his launch rpm. With
this, the driver can activate the two-step, and press the gas to the floor without over-revving the engine. You can recognize a two-step by the uneven Pop-Pop-Pop
of the motor. Release the two-step, and the motor is unleashed, the throttle already wide open.
Break-out or run-under
When a car runs quicker than its
dial-in, it is called a break out. That driver loses the race unless the other car breaks out by more than he did, (or red-lighted). This is called a
double-breakout.
"Cherry Picker"
A cherry picker is that guy that sits in the back of the lanes and purposefully tries to "pair-up" with whomever
he thinks will be the easiest win.
Delay Box
The "box", as it is usually called is an electronic device to aid the driver. The driver can dial a
number into the box, called the delay. Usually used in conjunction with a transmission brake and two-step, the driver can hold down a button mounted on his
steering wheel, activating the transbrake and two step, and then let go of the button the instant he sees the "first flash" of amber from the first bulb. The delay
box will then count the thousandths of a second dictated by the driver, and then release the transbrake and two-step.
The driver can adjust his reaction
times by changing the number on the delay box. The theory is that a driver instinctively reacting to an initial signal (the first amber) will be quicker and more
consistent than a driver that must train himself to wait for the third amber. This is indeed often the case, making the box a controversial (but legal) tool in
many classes.
Dial-in
A dial-in is your educated guess or prediction of your car's ET. Dial-ins are used to handicap cars in eliminations. When
two cars race, the two dial-ins are subtracted, and the slower car is given the difference in a head start. The head start is shown by the Christmas Tree coming
down in his lane first. The theory is that if both drivers have identical reaction times, and both hit their dials exactly, they will meet on the finish line at
exactly the same time.
Example: You made time trials with these ET's: 15.05, 15.07, 15.01. If you decide to dial-in at 15.00, and your opponent dials a
12.00, you will receive a 3.00 second head start.
Dumping
Purposefully lifting or hitting the brakes with the intention of letting your opponent
hit the finish line first, hopefully to force him to break out while you do not.
ET
Elapsed Time (ET) is the time between the car starting and it
reaching the end of the 1/4 mile. A car "starts" or triggers the ET timer by reconnecting the staging beam (ie, when it leaves the starting line). Starting the ET
timer is identical to stopping the Reaction Time (R/T) timer.
"Killing the tree"
This phrase is said to describe a driver that has been getting
consistently great reaction times. Also, "I nailed the tree on him" means that you had a much better light than your opponent.
Lights
Lights has
two different meanings, which are contextual. It can either refer to the starting lights on the Christmas Tree, or the top-end 'lights' or 'eyes', which is
talking about the photocells near the finish line (ie, the last 60 feet). "The lights came down..." refers to the tree, whereas, "I was ahead of him going through
the lights" refers to the top end.
Line-lock
A line-lock allows the driver to set the brakes on just one set of tires. Usually, racers put a
line-lock on the front tires in order to aid their burnouts. They set the brake, hold a button, and then release the brake pedal. The brakes will release on the
back, but hold the front brakes until the button is released. Some people try to simulate a transbrake by having four-wheel line-locks. This allows the driver to
hold the brakes with the button on the line, instead of his foot.
Reaction time (R/T)
Indicates how much delay occurs from the last Yellow light
being turned on and the car starting the Elapsed Time timer. The green light is turned on .500 seconds (.400 on Pro tree) after the last yellow, so a R/T value of
.500 indicates a "perfect light". A value less than .500 indicates the car started before the Green light, which is an illegal start activating the the Red light.
R/T values greater than .500 indicate how much delay occured from the Green light coming on to when the car started. The larger the delay, the greater opportunity
for an opponent to start before you and gain an advantage.
Red-lighting or "bulb"
A red-light occurs if a car starts before the green light comes
on. During competition, this will immediately give the win to the opponent. Racer's will often say, "He bulbed it away," meaning he lost because he
red-lighted.
Sandbagging
This is the practice of dialing-in an ET that is much slower than the ET's that your car runs so that you should always
hit the finish line first. In order to be an effective sandbagger, you usually must have a better reaction time than your opponent, and then hit the finish line
just before your opponent to avoid breaking out.
Stage and Pre-Stage
Each car is required to line-up their car at the starting line. The starting
line consists of a light beam which is about 1" off the ground. Once a car moves forward enough for its front tire to block the beam from reaching the other side,
the car is considered "staged". Once both cars have staged, the race can begin.
To assist drivers in staging, a "pre-stage" beam is also used. This beam is
located a few inches behind the "stage" beam. This lets drivers know when they are getting close to the stage beam.
Top-end
The finish line area:
this is where the bracket racer has to make his decisions as to what tactics he is going to use to try to win the race. Will he need to hit the brakes? Will his
opponent?
Transbrake A transbrake is a device which allows a car to remain stationary even when the motor is under power. It works by placing the
transmission in 1st gear and Reverse at the same time. Since both gears have the same ratio, but it opposite directions, the car cannot move. The transbrake can be
released with a button, which releases the Reverse gear. Although they make for powerful launches, transbrakes can be hard on transmissions.
Trap
speed
Trap Speed refers to a car's MPH measured during the last 60 feet of the 1/4-mile. By knowing the weight of a car, the trap speed is a good indicator
of how much horsepower an engine is making.
Two-Step
A two-step is an electrical ignition device that will "cut out" cylinders at random, after
the engine rpm tries to exceed a certain point. This is basically a rev-limiter. The driver can set the low-side rpm of the two-step to be his launch rpm. With
this, the driver can activate the two-step, and press the gas to the floor without over-revving the engine. You can recognize a two-step by the uneven Pop-Pop-Pop
of the motor. Release the two-step, and the motor is unleashed, the throttle already wide open.
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 10:39 (153 reads)
The Starting Line

The
starting line is composed of two pair of photocells, one for each lane. The photocells detect your car when your tire interupts the light beam that crosses the
lane. Tracks used to use bright lights and photocell receivers, but now many tracks are using the Compulink timing system which uses infrared beams. These beams
are much better for drag racing. Drivers used to paint their wheels or put shoe polish on them to dull the bright, reflective surface. The old lights and photocell
combination would sometimes pick up reflected light from the wheel, and then not "see" the tire. The infrared beams have no such problem. The timing system down
the track uses a system of beams and reflectors, too. When the beam is complete (ie, the beam is reflected back to its origin), nothing is blocking it. When the
cycle is broken, the beam has been interupted, and thus a tire has been sensed.
The two photocells are linked to the Tree: the Pre-Stage, and the Stage
lights. When the car inches forward and blocks the first photocell, the Pre-Stage light comes on, indicating that the driver is close to the starting line. Most
tracks have a rollout, or distance between the Pre-Stage and Stage beams of 6-8". The driver can now nudge the car forward until the car blocks the Stage beam,
thus lighting the Stage bulbs on the Tree. This means that the driver is on the starting line, and is presumably ready to go. The driver also has the option of
deep-staging, however, which means he bumps his car forward even more until the Pre-Stage bulb goes out. This means that his tire has just left the Pre-Stage
beam.
Let's go back to the Christmas Tree. We said that each light was a half-second apart, and thus a .500 light was a perfect reaction time. The reaction
timer starts when the third amber lights, and stops when the car's tire leaves the starting line (ie, stops blocking the Stage beam). How does deep-staging affect
your reaction times then?
This question leads us to rollout. Rollout is the distance that your tire has to travel to exit the starting line. The starting
line beams are about an inch or two off the ground. If you measure your tire width that far above the ground, you will find that it is about 11-14", depending on
your tire height. Let's say it is twelve inches. This means that your car has to roll forward an entire foot before the reaction timer stops. This has two
effects:
1 You must react before you see the green-light, and
2 Your car effectively has a rolling start of one foot before the reaction
timer stops, and the ET timer begins.
Apply this knowledge to deep-staging. What effects does it have? First, what is your rollout? Your tire is in front of
the Pre-Stage beam now, so a lot of your tire is 'hanging out' in front of the Stage beam as well! This is distance that the tire does not need to pass through
the starting line, since it is already past it. Therefore, your rollout has decreased. What is your new rollout? Let's figure it out. How much of your tire is
before the Stage beam if you have the same tire as before? If the distance between the Pre-Stage and Stage beams is 8", then your rollout is 8"! What if you have a
Monster truck tire, and you are deep-staged? Think: all the extra tire is still in front of the Pre-Stage beam, and therefore is in front of the Stage beam. Your
rollout is still 8"! In short, since you have less rollout, it takes your tire less time to leave the starting line, and so your reaction times will be faster. By
the same token, however, you have less of a rolling start, so your ET will be slower than if you had staged normally.
You may still be wondering why you
have to react before the green light comes on. The answer comes in two parts. First, as we just mentioned, there is the rollout of the vehicle. Let's use Frank
Hawley's terms, and call this Vehicle Reaction time, or VRT. That's not all, though. You also have a reaction time as a human. If someone snaps his fingers in
front of your eyes, how long does it take you to react? Through experimentation, both in my college physics lab, and with the practice tree, I have determined that
human reaction time is roughly .21 seconds, plus or minus several hundredths for individual differences, and human inconsistency. Thus, we must also consider
Driver Reaction Time, or DRT.

The
starting line is composed of two pair of photocells, one for each lane. The photocells detect your car when your tire interupts the light beam that crosses the
lane. Tracks used to use bright lights and photocell receivers, but now many tracks are using the Compulink timing system which uses infrared beams. These beams
are much better for drag racing. Drivers used to paint their wheels or put shoe polish on them to dull the bright, reflective surface. The old lights and photocell
combination would sometimes pick up reflected light from the wheel, and then not "see" the tire. The infrared beams have no such problem. The timing system down
the track uses a system of beams and reflectors, too. When the beam is complete (ie, the beam is reflected back to its origin), nothing is blocking it. When the
cycle is broken, the beam has been interupted, and thus a tire has been sensed.
The two photocells are linked to the Tree: the Pre-Stage, and the Stage
lights. When the car inches forward and blocks the first photocell, the Pre-Stage light comes on, indicating that the driver is close to the starting line. Most
tracks have a rollout, or distance between the Pre-Stage and Stage beams of 6-8". The driver can now nudge the car forward until the car blocks the Stage beam,
thus lighting the Stage bulbs on the Tree. This means that the driver is on the starting line, and is presumably ready to go. The driver also has the option of
deep-staging, however, which means he bumps his car forward even more until the Pre-Stage bulb goes out. This means that his tire has just left the Pre-Stage
beam.
Let's go back to the Christmas Tree. We said that each light was a half-second apart, and thus a .500 light was a perfect reaction time. The reaction
timer starts when the third amber lights, and stops when the car's tire leaves the starting line (ie, stops blocking the Stage beam). How does deep-staging affect
your reaction times then?
This question leads us to rollout. Rollout is the distance that your tire has to travel to exit the starting line. The starting
line beams are about an inch or two off the ground. If you measure your tire width that far above the ground, you will find that it is about 11-14", depending on
your tire height. Let's say it is twelve inches. This means that your car has to roll forward an entire foot before the reaction timer stops. This has two
effects:
1 You must react before you see the green-light, and
2 Your car effectively has a rolling start of one foot before the reaction
timer stops, and the ET timer begins.
Apply this knowledge to deep-staging. What effects does it have? First, what is your rollout? Your tire is in front of
the Pre-Stage beam now, so a lot of your tire is 'hanging out' in front of the Stage beam as well! This is distance that the tire does not need to pass through
the starting line, since it is already past it. Therefore, your rollout has decreased. What is your new rollout? Let's figure it out. How much of your tire is
before the Stage beam if you have the same tire as before? If the distance between the Pre-Stage and Stage beams is 8", then your rollout is 8"! What if you have a
Monster truck tire, and you are deep-staged? Think: all the extra tire is still in front of the Pre-Stage beam, and therefore is in front of the Stage beam. Your
rollout is still 8"! In short, since you have less rollout, it takes your tire less time to leave the starting line, and so your reaction times will be faster. By
the same token, however, you have less of a rolling start, so your ET will be slower than if you had staged normally.
You may still be wondering why you
have to react before the green light comes on. The answer comes in two parts. First, as we just mentioned, there is the rollout of the vehicle. Let's use Frank
Hawley's terms, and call this Vehicle Reaction time, or VRT. That's not all, though. You also have a reaction time as a human. If someone snaps his fingers in
front of your eyes, how long does it take you to react? Through experimentation, both in my college physics lab, and with the practice tree, I have determined that
human reaction time is roughly .21 seconds, plus or minus several hundredths for individual differences, and human inconsistency. Thus, we must also consider
Driver Reaction Time, or DRT.
[ Drag Racing ]
Requested and Answered by Nino on 16-Jul-2006 10:38 (120 reads)
In order to get good reaction times, we must understand the drag racer's worst enemy (besides himself), the
Christmas Tree. It seems simple enough, but the starting line is often the bane of many a would-be racer. You should be comfortable with the reaction times before
you worry about Top-End Tactics. Let's take a look at the anatomy of the tree, and then we'll take a look at the starting line to see how the two interact with
each other, and with the driver and his car.
The tree is made up of three major parts. At the top of the tree, you see two sets of double yellow bulbs for
each side of the tree (each lane). The top set is called the Pre-Stage bulbs. This is an indicator for the driver that he is approaching (and near) the starting
line. The second set is called the Stage bulbs. They indicate that the driver is actually on the starting line, and presumably ready to race.
The next
section is the three amber starting signals. In most bracket racing classes and Sportsman classes, these bulbs will light in sequence, a half-second apart. This is
called a Full Tree. Some classes, however, use a Pro Tree. A Pro Tree will light all three ambers simultaneously, with a four-tenths of a second delay between them
and the green light. We will concentrate just on the workings of the Full Tree.
The last two lights then, of course, are the green and red lights. The green
will come on after the amber bulbs if the driver has not left the starting line too soon. Leaving the line before the green light will result in the dreaded red
light... a foul start.
As we said earlier, a Full Tree counts down at half-second intervals. The cycle goes: Amber on, delay, amber off and next bulb on.
Here's the important part. The reaction timer starts when the third amber comes on. Since there is a half-second (or .500 seconds) delay until the green light
comes on, a .500 reaction time is perfect. (In the same way, the four tenths delay of the Pro Tree makes a .400 a perfect light on that one) Now, the reaction
timer stops when the car leaves the starting line. To understand this better, we must examine the starting line, and how it relates to the Tree.
Christmas Tree. It seems simple enough, but the starting line is often the bane of many a would-be racer. You should be comfortable with the reaction times before
you worry about Top-End Tactics. Let's take a look at the anatomy of the tree, and then we'll take a look at the starting line to see how the two interact with
each other, and with the driver and his car.
The tree is made up of three major parts. At the top of the tree, you see two sets of double yellow bulbs for
each side of the tree (each lane). The top set is called the Pre-Stage bulbs. This is an indicator for the driver that he is approaching (and near) the starting
line. The second set is called the Stage bulbs. They indicate that the driver is actually on the starting line, and presumably ready to race.
The next
section is the three amber starting signals. In most bracket racing classes and Sportsman classes, these bulbs will light in sequence, a half-second apart. This is
called a Full Tree. Some classes, however, use a Pro Tree. A Pro Tree will light all three ambers simultaneously, with a four-tenths of a second delay between them
and the green light. We will concentrate just on the workings of the Full Tree.
The last two lights then, of course, are the green and red lights. The green
will come on after the amber bulbs if the driver has not left the starting line too soon. Leaving the line before the green light will result in the dreaded red
light... a foul start.
As we said earlier, a Full Tree counts down at half-second intervals. The cycle goes: Amber on, delay, amber off and next bulb on.
Here's the important part. The reaction timer starts when the third amber comes on. Since there is a half-second (or .500 seconds) delay until the green light
comes on, a .500 reaction time is perfect. (In the same way, the four tenths delay of the Pro Tree makes a .400 a perfect light on that one) Now, the reaction
timer stops when the car leaves the starting line. To understand this better, we must examine the starting line, and how it relates to the Tree.
[ STMC Membership ]
Requested and Answered by Nino on 22-May-2006 11:46 (286 reads)
You must be a paid member of STMC; that's it!!
Email the pictures or post them in the forum. Be sure to include your real first/last name.
Email the pictures or post them in the forum. Be sure to include your real first/last name.


