Low end torque

[zmikecuber]

I have a 48 tooth sprocket. So far top speed on level ground is about 33. However, it's impossible to get enough torque to get going from a complete dead stop. Engine kills.

Is this normal for a 2 stroke 66 cc with a 48 tooth sprocket?

 

[zippinaround]

if you give it a little rev before popping the clutch it should take off but will wear your clutch way faster, best just give it a little pedal. if you havent tried already try extending your intake.

 

[Steve Best]

Yes, what you describe is totally normal. It is a single speed "power assisted" bicycle. Not a motorcycle.
I have a 48cc motor with the 56t sprocket. It will take off better than my 44t 66cc and top speed is 30mph-ish (stock).

You can tinker and tune with it to get better takeoff and speed, but what you describe is "as designed".

 

[Deleted member 12676]

click on my signature link to read about lengthening the intake tract to improve low end torque.
also increasing engine compression helps.