GT12 Help..

[Xracer]

Stu, some are using 64T as I am, the thin ZENG001 by RW Racing.

If you look at a roll-out charts for spur gears at 2t intervals you will see only a small difference in the actual gearing between corresponding ratios.

i.e for a 44mm rear tyre 35/70 gives 69.1 mm/rev, 34/68 is 69.1 mm/rev, 33/66 is 69.1 mm/rev and 32/64 is also 69.1 mm/rev!
No difference in this particular case until you start adding decimal places.

Who came up with using 2T difference I wonder but does it matter with the current brushless motors being quite tolerant to gearing.

Smaller gears have less inertia and the spur is further from the carpet, splitting hairs maybe but in the world of Zen, "the aggregation of marginal gains"!

Also by changing spurs you can utilise a smaller range of pinions.

Whether there are any frictional gains or losses I do not hasten to add!