Comments on: Ask The Insiders Wednesday #43 http://www.thenascarinsiders.com/2009/09/29/ask-the-insiders-wednesday-43/ A blog by insiders for outsiders Thu, 09 Feb 2012 00:03:01 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: windowlicker http://www.thenascarinsiders.com/2009/09/29/ask-the-insiders-wednesday-43/comment-page-1/#comment-15308 windowlicker Wed, 30 Sep 2009 17:25:58 +0000 http://www.thenascarinsiders.com/?p=2142#comment-15308 Thanks Neon. I understood the flat spot/vibration issue. I just thought that smoking the tires on exit wore off more rubber than it apparently does. It just seems that when drivers are told to take care of their tires, you wouldn't want to smoke them leaving the pits. I guess it depends on the compound & track surface too. The tires the trucks had at Vegas seemed to really hold up great & the guys who stopped to get a fresh 4 could not blow by the guys who stopped for gas only. Thanks Neon. I understood the flat spot/vibration issue. I just thought that smoking the tires on exit wore off more rubber than it apparently does. It just seems that when drivers are told to take care of their tires, you wouldn’t want to smoke them leaving the pits.

I guess it depends on the compound & track surface too. The tires the trucks had at Vegas seemed to really hold up great & the guys who stopped to get a fresh 4 could not blow by the guys who stopped for gas only.

]]> By: Neon http://www.thenascarinsiders.com/2009/09/29/ask-the-insiders-wednesday-43/comment-page-1/#comment-15289 Neon Wed, 30 Sep 2009 13:33:49 +0000 http://www.thenascarinsiders.com/?p=2142#comment-15289 Windowlicker (#10)- a locked-up tire literally creates a flattened area across the surface of the tire because the tire actually stops rotating. The flat spot is caused when the rubber is ground away in that area only like a cheese grater. If you slide into the pit, flat spot the tire its no big deal if those rubbers are coming off on that stop. Worst part is the crew having to chase down the car potentially "out of the box". If you go back out on flat spotted tires get ready for some bone jarring vibration that makes effective braking impossible. Now....the difference between sliding a tire in vs getting wheel spin out of the pit box is the rotation. A minor burnout wears off very little rubber depth, but most importantly is consistent around the entire circumference of the surface w/o a flat spot. The burnout also gets some quick heat into the rubber. Rear tires that don't spin at all run the risk of breaking the rear end gearing with too much grip. Hope that helps! Jeanette (#6)- go back and look at the original Dale Earnhardt Sr. GM Goodwrench #3 cars. The internals of the #3 were in the shape of an open end "monkey" wrench. A neat idea someone came up w/ but few noticed it. Good for trivia night! RE Jerry from yesterday...I hope I spilled everything correctly! Hehehe Windowlicker (#10)- a locked-up tire literally creates a flattened area across the surface of the tire because the tire actually stops rotating. The flat spot is caused when the rubber is ground away in that area only like a cheese grater. If you slide into the pit, flat spot the tire its no big deal if those rubbers are coming off on that stop. Worst part is the crew having to chase down the car potentially “out of the box”. If you go back out on flat spotted tires get ready for some bone jarring vibration that makes effective braking impossible.

Now….the difference between sliding a tire in vs getting wheel spin out of the pit box is the rotation. A minor burnout wears off very little rubber depth, but most importantly is consistent around the entire circumference of the surface w/o a flat spot. The burnout also gets some quick heat into the rubber. Rear tires that don’t spin at all run the risk of breaking the rear end gearing with too much grip. Hope that helps!

Jeanette (#6)- go back and look at the original Dale Earnhardt Sr. GM Goodwrench #3 cars. The internals of the #3 were in the shape of an open end “monkey” wrench. A neat idea someone came up w/ but few noticed it. Good for trivia night!

RE Jerry from yesterday…I hope I spilled everything correctly! Hehehe

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