Good acceleration can be obtained by softening the gear ratio of the standard. But top speed is reduced. Fitting using that in the crowded city streets and do not need top speed. Instead, more and more top-speed gear ratio okay if compounded from the original. The risk is somewhat slow acceleration.
Commuted means, the results for the number of eyes with the back of the front gear after replacing so much smaller than the original. If weighted, the results for the number of eyes with the back of the front gear after replacement so bigger than standard.
Now talk rules mutually gear. Benchmark change front and rear gear ratios a maximum of 1 eye. Whether it be lightened or weighted. That is, if the calculated change in the ratio, plus-minus, a maximum of 0.1.
Let me be clear, use the example of Astrea Supra gear ratio. This Honda duck wearing front gear 15, rear 40, 40 split ratio 2.667 15. result. If referring to the rules, the maximum limit commuted gear ratio is 2.567. Medium weighted maximum gear ratio is 2.767.
If you want to fix acceleration can enlarge the rear gear with one eye, the Kan 41. so sprocket ratio 2.733 (41 divided by 15). But, if the lower front gear of the eye (14) the result was 2.857. Passing from the maximum limit.
So, if want to add make-gear acceleration with the front 14, rear gear must be replaced. That meet the rules should use the rear gear 38. Therefore, with the gear ratio so 2.714 (38 divided by 14).
