Rotary Junkie
Premium
- 9,810
- Canton, MI
- RJs_RX-7
And again you're completely disregarding the power band of this motor. Using the shorter gearing will leave you stranded well out of range of peak power for a very long time down the back straight, you'll be hitting 9,000rpm or what ever when peak power was way back at 7,500rpm and a dubious decline afterwards. The point RJ is trying to make, I think, is that shorter gearing does not provide enough of an acceleration off-set to justify the major loss in top speed, simply because of the reasons he's mentioned.
That and shorter gearing does not help acceleration after the car first finds the powerband. Closer spacing does when used correctly but having each gear simply be shorter does nothing.
My Hawkeye Impreza uses maximum-length gearing (261mph) even though it will only ever hit about 185mph with the 400hp it has. Reason? Can't get 6th long enough for top speed otherwise. As it is, it maxes out bang on peak power (6500rpm). Do I suffer in terms of acceleration any because of it? Nope. Maybe on race softs I could go shorter and find a few tenths on launch but that's it.