Honda and Acura Car Forums banner
1 - 4 of 4 Posts

·
Registered
Joined
·
439 Posts
bluestreak1 said:
is it the lower the number the better or higher and whats the significance? is it an indicator of how high your top speed could be?
Well better depends on your application. say you have 2 ratios like 3:1 and 4:1. The 3:1 would be a taller gear, because for every 3 turns on the input side you get 1 turn on the out put. the 4:1 is the shorter gear because to get the same speed as the other ratio you have to turn the input more.

The shorter ratio allows for faster acceleration because the torque on the input side is multiplied more than with the taller gear, but the comprimise is in top speed.


So basically to sum it up shorter gearing is better for acceleration, and a taller gear is better for top speed.
 

·
Registered
Joined
·
2,107 Posts
and to go further, you can compensate for the final drive with your highest gear ratio.

like say approximately this scenario with all gears in tranny the same except the following:

final=4.11 and .52 top gear

vs.

final=3.73 and .62 top gear

they'll both have approximately the same top speed even though the first one will get their quicker through the first 4 gears due to it's shorter final gear. After that, the second will reach top speed sooner due to it's shorter top gear. Even though it won't be MUCH faster in top gear. But they will both have approximately the same top speed. If on the other hand the second one had the same top gear as the first instead of the .62 ratio, then it would have the higher top speed of the two cars.

oh, and this is assuming that neither car's ecu has a fuel cut after a certain speed is reached like most do now a days.;)
 
1 - 4 of 4 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top