Quote:
Originally Posted by snapper
The type 9 whilst better ratios than an MT75 is still not ideal
1st to low as is second 5th to long
The ideal is a V6 box with a long first and a 3.9 diff
Tyres add to the ratio mix but in essence you want to get 1st and 4th close enough to give 40+ mph in 1st and about 125 in 4th
5th can be for long cruises
Extra rev range for the engine helps close the gap
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125 in 4th yeah good luck. anything less than 200bhp in a 7 and you want 4th geared for 90-95 and 5 geard for about 125-130. look at the ratios in a caterham for reference, their ratios are about as spot on as it gets for a 7. aero is a huge limiting factor on a 7. mine is a fire breathing 2.0 turbo running over 200bhp and it will only do 145 flat out which in a 7 is bloomin quick and a total assault on your body and senses, the other issue is that around 125ish the steering gets very light an twitchy on the mass majority of 7's