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Author Topic:   Stock Car Data Acquisition
Dirt Roller

Total posts: 13
posted August 09, 2005 02:03 PM  
What do you guys think about data acquisition on your race car?

I know that the systems that cost over $1000 are not typically used by street stock racers...

But if there were a cheaper system (around 300 dollars) what features would you want to see?

- Lap Timing
- Brake
- Gas pedal
- Steering wheel angle

I think that there is a lot that a racer can learn from analyzing their laps... If they see what the did differently on faster and slower laps it can help figure out where they can improve.

Would anybody be interested in this?

What features would you like to see?


Dirt Maniac

Total posts: 146
posted August 09, 2005 05:31 PM  
yea right. like the 500 dollar scales that SOME GUY was talking about on 4m and would never post back.

Dirt Full Roller

Total posts: 56
posted August 09, 2005 05:44 PM  
That question is good but here is an even better question if you had all the information what would it mean and what would you do with it. Some guys own scales but cant get around the track if there life depended on it with there scales. Yet those that dont have them sure as H E L L do a lot better job then those with.

Dirt Roller

Total posts: 13
posted August 11, 2005 08:59 AM  
Right... I know a lot of drivers can't seem to make their car handle no matter what shop equipment they have.

But I think that data acquisition can provide valuable information. If they could look at a graph of how a FAST driver goes around the track. They could see things like

Where and when they are braking...

How much they are turning...

Which corners they are fast on...

Then compare their own results. They might notice things like they are slow on a particular corner... or that they are overcompensating on the wheel too much. Sometimes it can be hard to keep track of everything you are doing when you are just starting out.

Having some data to analyze when you get home after the race can be useful. You can only spend so much time in the seat... having some record of exactly what you did right (and wrong) can prepare you better for your next time out.

Russell G. Sheehan
Dirt Roller

Total posts: 11
posted August 11, 2005 10:16 AM  
Hey SBS,
I'm working on a data-acq system right now. Microcontroller based. Currently it has throttle position, steering angle, rpm, and X-Y accelerometer sensors, and an on/off brake sensor. I think it would help the driver remember what happened after the race by looking at the data and say 'Oh yeah, you can see right there the throttle goes down, the rpms spike (spinning) and the 'Y' accel shows the fishtail. Should be a lot of fun, whether it actually helps with track tuning, we'll have to wait and see.

Did you ask because you want one, or are you working on one also?


Dirt Freak

Total posts: 265
posted August 11, 2005 10:47 AM  
Try using a Mychron 3. Its a kart tach with some data acq features. Y

ou get lap times, RPM replay, max RPM total and per lap. and a temp sensor.

You can buy these used for under $300 all day long.

Dirt Maniac

Total posts: 123
posted August 15, 2005 09:56 AM  
Application is the key ingredient of any data system. If it was me I'd like to see 30 channels, (Wheel travel pots, steering pots, tire temps, water temps, RR and LR Wheel Speeds) I have an old Pi system that I use for some testing and my R&D car. The disadvantage to Pi is all of the proprietary sensors and other junk they have so repairs are pretty costly.


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