#Motorized bike kit 2 stroke tuning full

If you think your motor is running too lean, then fit a higher number jet.Р”Р‡or a rich running motor, do the opposite. The higher the number, the larger the jet. The 0.60 is marked with (-), a 0.65 Standard (no mark) and a 0.70 marked with (|).

Resellers often sell jet kits with three sizes of jet. Occasionally, variables such as manufacturing tolerances, wear, atmospheric conditions (particularly altitude) and seasonal fuel changes (yes, the petrol companies change the make up of the fuel on a seasonal basis), there could be a gain to be made by changing the main jet of your NT carburetor. If, after doing all the above, your motor is not quite as you would like it to be, but close, do the following:Р”Р„s most bicycle engine kits have already selected the best jet size for your motor, it is rare that changing it will make an improvement beyond the previous changes. (At the top end of the speed range it makes no difference to the performance of the motor because it has run out of breath anyway). If this happens at a lower speed, you will know because there will be a noticeable drop in the rate of acceleration. So our aim is to get a nice crisp two-stroke note, with good acceleration, but a slight РІР‚Вfour strokingРІР‚в„ў rumble at the top end of the speed range.

#Motorized bike kit 2 stroke tuning full

The РІР‚Вangry beeРІР‚в„ў sound of a two stroke РІР‚Вon tuneРІР‚в„ў is what you want for best performance (and it sounds great!), however at the top end of the speed range, at full throttle, the slightly richer РІР‚Вfour strokingРІР‚в„ў note will ensure the motor will last longer and prevent overheating which causes loss of power, and eventually, engine failure.

This is known as РІР‚Вfour strokingРІР‚в„ў and means the motor is running slightly РІР‚ВrichРІР‚в„ў. Once warmed up it should idle smoothly, accelerate with a crisp note and pull evenly up to high speed, where it will break into a РІР‚ВflutteringРІР‚в„ў sound.

If РІР‚Вon tuneРІР‚в„ў your motor should start easily and require choke when cold.