2009 Yamaha aerox tuning help needed

Discussion in 'Newbie Scooter Tuning' started by Paul1574, Feb 16, 2021.

  1. Paul1574

    Paul1574 New Member

    Got a 2009 Yamaha Aerox as a project and had to completely rebuild the engine. Fitted an Airsal full circle crank shaft, 70cc Airsal Kit, Tecnigas Q-Tre exhaust, 17.5mm Carb with 90 jet, 5 gram rollers, 30% spring (not sure if thats correct for what I'm running), Uprated crankshaft bearings, Lighter Clutch, Vented performance clutch bell, Double layer Polini air filter, Kevlar belt, new reed valves, New fuel filter.

    It feels like it is lacking power from watching videos where people have the same cylinder kit but not full circle crank they seem to have better acceleration. I'm going a bit easy on it because I gotta heat cycle the engine so im not going over 35 and im accelerating slower but when i do try it seems to have nothing. Also if im at about 20mph and accelerate it takes years to get to 30.

    If anyone knows anything that could help please reply.

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