Not what I expected......

[noah]

what he said

 

[Scottm]

Is your engine broken in yet? Yhey run much better after break in.

This was my first reaction too. I just got my new DAX70 cc running and it putts along slowly and quietly like my first bike did. Let the bike idle/warm up for a while before you ride.
Plus check the throttle cable adjuster on top of the cap. make sure it's not all the way in.
Good luck

 

[Skyliner70cc]

The 65cc isn't as powerful than the 70cc in my personal experience. I was disappointed with my 65cc and got a 70CC instead.

BTW, I was told by Dax that the 65CC carb is difference from the 70CC carb. Putting 70cc carb on the 65cc may cause problems.

 

[Herrmanator8]

Well...could you tells us whats going on? what happens when you get to 20mph? does it bog down? does it knock or kick? does it feel like the clutch is slipping? does it whistle??

maybe if we knew what some of the reactions are then we would be able to tackle a specific part of the problem

Jon

 

[pabickwermert]

Try Opening Up The Plug Gap To .034

When I set my plug to the short side, it was a D O G...

After I opened up the gap to .034 it ran much better.

The plug gap is still in the range it states so give it a try.

Paul

 

[kaploink]

I run next to my father up, down or level ground and I just pull away from him untill I hit 20mph...Then here he comes and there he goes....

It sounds almost like he has a smaller rear sprocket than your kit.