I have a Grand Tourisimo 200 engine in one of my scoots and it struggles on hills and into head winds so suspect that the gearing needs ganging as its currently 4.7: 1(LiS 124 20/47). Its been suggested that it needs to be close to 5:1. a 19 tooth front sprocket would give 4.95:1 or I could change the box to Li150 with 16/47 which gives 4.8:1. Which combo would be preferable?
Cheers
Colin