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it would be easy to make a 7-speed for the celica....

1-3-5-7
2-4-6-R

same width for shift gates.

the C-One transmission is like cruising on the highway in 5th gear on the stock transmission...figure out your mileage estimates from there.
 

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Griffin said:


During day to day driving a lower gear ration actually degreases strain on your engine by giving you a greater mechanical advantage in normal acceleration. The only thing that will be different is how much time you spend in lift, which will vary based on how often you are REALLY driving it. Remember guys, you dont HAVE to take a car to redline every time if durability is what conserns you.

So yes, assuming you only push yourself when you are racing I do not think this will have a significant impact on your car.

As for gas mileage, it probbaly wont be affected much with the exception of high speed highway cruising.
it's like this, in 6th gear you're normally at 2500rpm for 55mph (or something like that) and that gives you the ~30mpg highway.

in 5th gear you're at 3200rpm at 55mph.

not bad, you're still getting 20+mpg easy.

but who cruises at 55mph? 70mph in normal tranny is 3200rpm, and in C-One it'd be 4000rpm...now you've got a noticeable difference. mileage would suffer more at a non-linear rate over 55mph.

i often cruise 75-80mph on long trips. forget it with the C-One, unless cruising 4000-5000rpm for hours at end is fine with you. bad gas mileage (would that even be over 20?) and more stress built up over the life of the motor.

so if you really really want it, it's doable. just don't take long trips or stay at 55-60mph on long highway trips and you can afford the drop in mileage.
 
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