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Post by turnleftdaddy51 on Dec 11, 2014 19:41:54 GMT -6
I was wondering whats the proper way to groove and sipe tires we run amenrican racer. I noticed the modifieds groove straight across tire for rear in the front they grooved them diagonally, should the diagonal groove face the outside or inside and are both left side and right the same.
How about siping does it matter which way you sipe. |
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Post by flipflopoo1oo on Dec 13, 2014 11:20:31 GMT -6
A lot of different patterns but if having a traction problem or temp issue it can be different! Address the lack of traction in chassis set up first as tires should not be the issue but if legal to grove or snipe it can help if needed!!! Keeping them washed clean during the week to keep them from drying out and the driver spinning them to warm and clean them off once on the track before the flag comes out has served us well! The three laps it takes to get them working is sometimes interrupted by cautions! Designs in grooving can cool them down when you need them heated! You can't win on the first lap anyways and if to aggressive it can get you into trouble! Its more about the understanding of needs than just having something you can do! It also depends on the type of dirt your on! Worn or older tires heat and cool differently so it can change drive traction and flip-flop traction from right to left depending on all the other factors! We chose to eliminate all we could by considering our option in not grooving or buffing! The tires lasted longer and with the stress of horses applied and correct air they found their working range quickly! Of coarse we had new tires and old ones (new) saved from the year before for compound reasons which seemed to be more important! You can get a push getting off or change entry as your tires change temps and bite after a few hard laps! Its all a gamble and you have or we did after the fact, better more consistence performance!!!
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Post by peterdragon on Dec 23, 2014 8:49:58 GMT -6
look at the guys goin fast on your home track! dont be afraid to copy.
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Post by leaf4life on Dec 27, 2014 23:31:19 GMT -6
depends on what your trying to achieve. basic rule of thumb, across rear tire forward bite. diagonal for side bite. but really only works for a heavy "fast" track. too much grooving may cause chunking and a useless tire.groving only helps minimaly when dry. when it dries out siping needed. either to build heat or regulate it. have heard it both ways
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Post by flipflopoo1oo on Dec 28, 2014 10:58:15 GMT -6
Tires in compounds and tread designs used to be the big call before tire rules calmed things down a bit! Going from 3s and 6s in the heats to 21s and 28s in the mains to a 53 all the time was quite a shocker for most! I was however well pleased with what grooving did for some to just get the temps correct on new tires! Twice as much on the left rear as the right and match the rt. ft. to the left rear as to not getting a push after 8 laps! This was solely for temps alone! Traction and air pressure to temp change is where compounds come into play! If you have over a 2 lb. gain even on the right rear, it is lacking in traction once you have the pressure to load matched! Flex from load shift can change roll out and create more friction to build air! Set-ups, even mine can vary in needs from 11-17 on the right rear to be stable and consistent in temps! A real ball game in its self and the rules change with the track, horses, starting positions and cautions! A little strategy goes a long ways towards winning where ever you start!!! A good topic to master!
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