I guess you may try somewhere around 4.9 - 5.1.... depends on temperature and the track layout. If you use 94 Spur gear... you may try 45 motor gear as a starting point which gives you FDR around 5.09! Pro4's internal gear ratio is 2.4375作者: simonwang002 時間: 2007-6-20 16:15
咁咪要買好多歯?$48粒,好貴
要買41.42,43,44,45作者: SunLi 時間: 2007-6-20 16:16
Pro 4 gear ratio chart