07-13-2011, 07:34 AM
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#11 (permalink)
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A True Z Fanatic
Join Date: Jan 2011
Location: MD
Posts: 40,963
Drives: HypeTrain Choo Choo!
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Quote:
Originally Posted by tranceformer
It's trial & error, see what works and doesn't work. Just keep lowering until you see a consistent improvement. Putting air back in isn't always an option, depends on the track if they have an air compressor or not.
FYI, 25 psi seems to be the sweetspot for my Z. You lose a little mph when you drop the rear tire pressure but get better traction (and hopefully a better ET). It sometimes helps to pump up the air pressure in the front tires to help weight transfer. Just practice, see what whats and doesn't, that's what makes it fun.
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Ok I'll see what I can do. Going a bit earlier this time so I can get some more runs in. I'll see what I can do with normal tire pressures first and then start lowering if needed. So with the better traction of lower tire pressure, should I be launching at a slightly higher rpm? At normal pressured the sweet spot seems to be around 1500 rpm for the 7AT.
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