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Author Topic: Race Setups  (Read 12462 times)
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CanadianRacingOnline
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« on: February 24, 2009, 02:01:49 PM »

OK I will ask the first question.

I used to play NASCAR 2003 and I wasn't that good and had more fun turnking the car around and hitting the field head on. Someone once said you have to setup the cars to the track as you would a real race car.

I knew cars do different setups for different tracks as I have been watching NASCAR for many years.

How much setup do drivers on here do to their cars each week. Do drivers here keep notes on what worked and what didn't.

Thanks
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« on: February 24, 2009, 02:01:49 PM »

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Dusty
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« Reply #1 on: February 24, 2009, 02:51:09 PM »

Yep. Grin
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« Reply #2 on: February 24, 2009, 02:54:00 PM »

We keep a log book, from the weather to tire pressures and tire temp after each practice, heats and features. It works for us, also if we have any issues we can go back and check what worked for us.
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« Reply #2 on: February 24, 2009, 02:54:00 PM »

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« Reply #3 on: February 24, 2009, 03:03:18 PM »

we do this as well as what we change with the motor/carb/gear, etc. from week to week.

Corner weights are apparently very important in TC and up so this year we will be watching our weight percentages closely as well.
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« Reply #4 on: February 24, 2009, 03:24:49 PM »

I,ve allways called it my "Play Book" sometimes at a differant track we may need a differant rate of front spring, or tire pressures,or even wedge, Its all in my play book. I swear that there are gremlins in the shop, changing things while we sleep. I use the Play book weekly. And its closely guarded. I wrench on three pure stocks, three play books.
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« Reply #5 on: February 24, 2009, 03:43:41 PM »

I too believe in shop gremlins, The car is perfect when you load it a week later everything is outta whack! Huh
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« Reply #6 on: February 24, 2009, 03:56:37 PM »

 Wink the nice thing about barriespeedway is if your fast there the setup only needs to be tweeked for other places Grin i dont change much unless it is way out of wack.
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« Reply #7 on: February 24, 2009, 04:15:45 PM »

This is great information as I thought I would be hearing I don't keep a log of what happen when and where and what the weather was like that day.

OK for those that go to many different tracks. Is it harder for you to get the car setup to run well at another track you don't regularly run or is a few minor adjustments at the track?

Charger says if you are setup for Barrie Speedway you only need minor tweets to run well at other tracks.

As discussed in many topics here. You hear there is different tires at different tracks. Now from what little I know the tire is a big part of the handling of the car so if you changed a different tire brand to run another track wouldn't you need a whole new setup for that tire at that track?
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« Reply #8 on: February 24, 2009, 06:01:20 PM »

we call it the bible, everthing from tire temp and pressures to humidity on that day to length of race, only thing missing is color of underwear because it is always the same pair,cleaned of course, maybe.
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« Reply #9 on: February 24, 2009, 06:03:58 PM »

Thayne if you have a set of scales at the shop check your weights their, especially if you are going to run Sunset. The scales their are outta whack.
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« Reply #10 on: February 24, 2009, 06:09:41 PM »

Thanks Scott, we haven't bought a set yet, keeping our eyes out for a bit of a deal. 1000 bux will buy a lot of tires! haha...
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« Reply #11 on: February 24, 2009, 06:45:12 PM »

Your right Thayne, but a $1000 may save a few tires too.
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« Reply #12 on: February 24, 2009, 07:05:03 PM »

This is true scott, we will have to see. I think the tracks should sell their scales every 2 years and buy a new set, just so they stay accurate. racers would jump at the chance to buy a set of scales cheaper as well. Me and rick walt were talking about this at Varney. If I could find a set for 500 bux I would jump on it.
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« Reply #13 on: February 24, 2009, 07:13:45 PM »

In the trade I work in, instrumentation is varied and of different quality. It all has one thing in common. The instruments need scheduled maintenance and calibration. I have worked on lots of different types of scales and all of them have given many years of good service. There are companies out there that calibrate and repair scales as their only business and it is surprisingly inexpensive (unless your scales are shot from lack of maintenance of course).
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« Reply #14 on: February 24, 2009, 07:40:10 PM »

This is true scott, we will have to see. I think the tracks should sell their scales every 2 years and buy a new set, just so they stay accurate. racers would jump at the chance to buy a set of scales cheaper as well. Me and rick walt were talking about this at Varney. If I could find a set for 500 bux I would jump on it.

There is also a trick I saw on a how to show that I am sure some racers on here know. I think it was on figuring out how to see how much your vehicle weighed roughly without scales.

This has to be done on a flat surface such as a garage floor so you can get an accurate measurement.

Get a piece of white board or construction paper, jack the car up and place a piece of paper under each wheel and let the car back down. Trace the contact patch on the paper. Take a tire pressure reading on each tire and write it on the appropriate piece of paper. Jack the car up again to get the paper out and calculate the areas in square inches. Multiply by the appropriate tire pressure in PSI and presto. You get a rough calculation of weight on each corner and add them up for total weight.

Example: Numbers are only for math purposes. I have no idea what a contact patch would be with a given tire at a given pressure.

A tire contact patch measures 6" x 6" = 36" sq
The tire pressure is 32 psi
36 X 32 = 1152 lbs

Again this is very rough but if the measurements are done consistently it can give you a rough weight distribution percentage. This is very rough and would work better with less tread of course. The more tread you have the more of the tire is not in contact with the ground so your actual contact area would be only where you touch the floor. For percentage purposes I don't think that area matters as long as you do all four tires the same way. Slicks work best of course since the whole contact area is touching the ground.
« Last Edit: February 24, 2009, 08:08:16 PM by ernie » Logged
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