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U.S. Vintage Trans-Am Racing Part 2

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U.S. Vintage Trans-Am Racing Part 2

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Old 03-20-2013, 07:59 AM
  #4411  
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Originally Posted by .crispy View Post
Yes.




I've found that just barely legal tires (some tread showing) are faster because they have better grip (on carpet).
The same holds true for asphalt racing also.
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Old 03-20-2013, 08:04 AM
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Originally Posted by Tommy R View Post
Exactly! It's part of the reason I want to try a gear diff in the front (with heavy oil) to replace my slipper spool. I think it may help my slight high speed push and also help alleviate some front tire wear.
Depending on the track size/layout it can make a difference. With my TC6, I alternate between a front spool and a gear diff w/ 200k oil.
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Old 03-20-2013, 08:10 AM
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Originally Posted by Tommy R View Post
That's what I was thinking, too. So does the 2:1 ratio hold true for carpet wear, as well?

I need to ask around locally to see how other folks' tires are wearing....



LOL! I just did the same exact thing! But it looks like I may need 3 sets of fronts to one set of rears.


Okay, here's another tire wear question for y'all... Obviously, as a tire wears, it becomes just a bit shorter. In a more severe example (like my tires), the fronts are noticeably shorter than the rears. Is that tire difference enough to cause adverse handling characteristics? I mean, effectively the front tires are spinning slightly slower than the rears due to the difference in overall circumference. Or am I just overthinking this?
As the fronts wear out they become a smaller diameter. You might have to adjust your ride height to compensate for that. Also you should begin to notice more steering as the tire wears. Most people notice that the tires don't really work well until they are over 1/2 worn out. New tires = less steering, worn tires = more steering.
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Old 03-20-2013, 08:43 AM
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Tommy, you are overthinking it a bit. The overall circumference is minute and really doesn't factor that much, even in scale. Full size cars face the same wear patterns to a large degree but you are still talking no more that an inch or so on a full size car.
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Old 03-20-2013, 09:25 AM
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new tires are faster..imo
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Old 03-20-2013, 09:33 AM
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Originally Posted by nubie-wan View Post
Tommy, you are overthinking it a bit. The overall circumference is minute and really doesn't factor that much, even in scale. Full size cars face the same wear patterns to a large degree but you are still talking no more that an inch or so on a full size car.
The only thing that makes me believe it could be an issue is because we're running AWD with no center diff whatsoever to account for front/rear tire height differences. And thanks to drifting, I know how much a factor it can be when the rear is spinning faster than the front.

But like I said, it's perfectly possible it's a non-factor, but that's why I'm asking.
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Old 03-20-2013, 11:17 AM
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Commenting on old VTA tires being a smaller diameter than new tires...

Actually the opposite can also be true....... Believe it or not, depending on what chemicals you are using to clean your tires and what traction compound you use, the VTA tires can grow (swell) larger in diameter compared to new tires. It is enough to affect your ride height and overall gearing rollout.

New tire on the left, used (but not worn out by a long shot) tire on the right.
Attached Thumbnails U.S. Vintage Trans-Am Racing Part 2-2012-12-07_23-02-33_468.jpg   U.S. Vintage Trans-Am Racing Part 2-2012-12-07_23-04-28_703.jpg   U.S. Vintage Trans-Am Racing Part 2-2012-12-07_23-26-16_865.jpg   U.S. Vintage Trans-Am Racing Part 2-2012-12-07_23-26-42_827.jpg   U.S. Vintage Trans-Am Racing Part 2-2012-12-07_23-07-46_190.jpg  

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Old 03-20-2013, 11:22 AM
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Wow, now that's interesting!! And definitely not what I would've expected. Thanks for the pics!
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Old 03-20-2013, 11:37 AM
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You don't have to buy them X-rays new I have gotten 2 for 150 For that price makes one heck of a VTA . He didn't even have a sprint 2
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Old 03-20-2013, 11:40 AM
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Originally Posted by DARKSIDE View Post
new tires are faster..imo
+1 on that! My tc6 goes into a push on somewhat bald skins in the front. Also in my opinoin install a complete new set at that time. Only because of swell on rears
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Old 03-20-2013, 12:55 PM
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Originally Posted by pbr View Post
You don't have to buy them X-rays new I have gotten 2 for 150 For that price makes one heck of a VTA . He didn't even have a sprint 2
+1

I ran my old T2'07 up til I replaced it with my new T4'13. The T2 models are perfect for VTA and can be found real cheap, with lots of upgrades and spare parts along with it. Thing is that they are built like a tank, you can crash the crap out of them and rarely break anything. Money saved on replacement parts is a good thing over the season
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Old 03-20-2013, 03:26 PM
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Originally Posted by SS LS1 View Post
Commenting on old VTA tires being a smaller diameter than new tires...

Actually the opposite can also be true....... Believe it or not, depending on what chemicals you are using to clean your tires and what traction compound you use, the VTA tires can grow (swell) larger in diameter compared to new tires. It is enough to affect your ride height and overall gearing rollout.

New tire on the left, used (but not worn out by a long shot) tire on the right.
I'm glad you posted this as this as my previous experience has been similiar. Our track uses Paragon Ground Effects and a new set of tires is firmer and smaller. After a month of racing the tires have ballooned up and have lots of grip.
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Old 03-21-2013, 11:58 AM
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I am sure this has been asked before, but the search function is horrible when using my phone. Are the tuning rotors from Novak legal and if so which ones? Thanks
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Old 03-21-2013, 12:16 PM
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NO and NO
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Old 03-21-2013, 12:16 PM
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Originally Posted by theproffesor View Post
I am sure this has been asked before, but the search function is horrible when using my phone. Are the tuning rotors from Novak legal and if so which ones? Thanks
No, just the 12.3mm rotor that comes in the motor is legal.
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