Sprockets should i change my rear sprocket 66 cc

[wackey101]

hi
i am currently running a 44t sprocket wich my bike is still not running cause im waiting for a master link for the chain should i change it cause i use for road there are hills but i want speed as well i was thinking maybe a 38t i think my motor might uggle with a 36t up a hill im running 66cc

 

[GearNut]

44 tooth is the most commonly recommended sprocket for good speed and decent hill climbing power. Smaller tooth count= faster top speed. Higher tooth count = better hill climbing torque. Unless you invest in a shift kit and have a multi-gear bicycle, you can't have your cake and eat it too.