Originally Posted by
primaveralaw
This helps a lot. Thank you. I have asked around and our local track regulars for stock touring are using tt01s geared 55-28. Straight is not as long as yours at 80m with 4 hairpins, a sweeper and 2 chicanes. Will the 90-48 combo be enough to go along with a 55-28?
I also understand that the internal gear ratio of tt01 and tt02 are the same at 2.6. Does this mean that I can also go 55-28 using the sanding method described a couple of posts earlier?
Sorry for the multitude of q's. New to TC gearing. Thanks in advance!
If it was up to me i would go for the 90T/48 combination.
This should give you the benefit of being faster on the straight and not loosing much when coming out of the corners (if there could be a disadvantage of the acceleration). From what i've noticed about the TT-02 is that it has a better throttle respons then a TT-01. But is a personal feeling.
This can only be measured on a track with looking at the laptimes.
Gear ratio of a TT-01 with 55T/28T combination is 5.11 and the TT-02 with a 90T/48T combination has a low 4.88.
I'm not sure if a 90T/46T (gives a 5.09 gear ratio)combination would be possible (cause of the gear meshing), cause that could be an even better choice for gear ratio.