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Author Topic:   imca g-60's
gould
Dirt Forum Champ
Total posts: 730
posted February 22, 2005 06:41 PM  
What do you guys do to condition your tires. I've heard on guys sanding them and I'm interested in doing this to mine. What grit, tool, belt sander, whatever do you all use? What about sofner for old tires, what do you use there?

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#13 mod
Dirt Full Roller

Total posts: 72
posted February 22, 2005 06:55 PM  
Grinding the ties works great. There are metal wheels out there just for grinding tires. The only problem is that IMCA won't allow it. I know that one of the tracks we race never checks for it, but the other track looks for sipping marks every week.
We get around this by using a DA with a heavy grit paper. It won't open the pores in the rubber like grinding will, but it will take the "glaze" off the tires. Hope this helps...

gould
Dirt Forum Champ
Total posts: 730
posted February 22, 2005 07:15 PM  
how heavy of a grit?

zeroracing
Dirt Forum Champ
Total posts: 1875
posted February 22, 2005 07:23 PM  
grind with 80 grit if your track wont let you use a metal wheel, that is 16 grit i think. from randys-racemart.
that is a good move on imca part, dont let you get more life out of a tire...
never ends.

#13 mod
Dirt Full Roller

Total posts: 72
posted February 22, 2005 07:34 PM  
80 grit is a good one. The random orbit of a DA helps hid the pattern from grinding.

FlyNLoIMCA17
Dirt Forum Champ
Total posts: 753
posted February 22, 2005 07:34 PM  
LOL! good one zero!

Yeah I use a sand paper disc on my 4 1/2" grinder. I have 80 and 60 grit, they both get the job done, and its basically undetectable.

Istock66
unregistered Total posts: 753
posted February 22, 2005 07:44 PM           send a private message to FlyNLoIMCA17   Edit/Delete Message   Reply w/QuoteBBBBBB
Imca has said 50 grit is fine, they dont want the tire looking shredded like the metal one would do. But it can look used.

I use a 4.5 25 grit wheel, then go over it with 50. the 25 gets it done fast but does leave marks that will still be there on occasion after a nights racing.

I also dismount and flip the rr, and rotate the rest every use.


speedy2
Dirt Full Roller

Total posts: 54
posted February 22, 2005 08:11 PM  
I use a 4 1/2 angle grinder with 120 grit sanding disc makes NO marks what so ever and only takes of the glaze not the good tread like the heavier grit discs do from pass experiences. Ive got a bent spindle and put a old rotor back on spindle to put wheel on and let the angle grinder spin the wheel as it takes the glaze right off. Can go two sets of wheels in a half hour.

gould
Dirt Forum Champ
Total posts: 730
posted February 23, 2005 05:12 AM  
sounds good thanks guys. any luck with softening agents?

Fastride 38
Dirt Maniac

Total posts: 125
posted February 26, 2005 06:07 PM  
Mineral Spirits works good and fast at least it did on go-kart tires back in the day. I'm sure it would work on a Modified tire too. I never thought to try. It would bring a 80 (by a durometer) down to a 40 in less than an hour. It's best to do it over night a couple of passes then wrap them in plastic wrap right after the last pass. I used a paint roller on mine and it worked great. Maybe this will help.

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