Repair/improving top transfer openings?

[zippinaround]

Zippinaround check out post #19. I'm talking about the new engine he's getting.

Ah ok apologies

 

[gary55]

No worries bro. I see where your coming from on # 24.

 

[gary55]

The A type? The one I have now is flat top. Weakest motor I've had so far. Hope the new notor is stronger[/QUOTE
Type A is domed with a lower wrist pin, and shorter stroke rod. If it's the same as what I got it grabs the rpm quick, and with 135 psi comp. has good torque.

 

[Deleted member 12676]

55cc upgrade from 48cc: http://www.dragonfly75.com/motorbike/60cc.html

 

[zippinaround]

I just whipped the 60 cc out of its box , from my measurements it seems the 60 cc head bolt spacing is slightly bigger at 43mm while the 48 is 40mm

 

[BikeBuilder43]

Did you order it from Kingsmotors or Gasbike?

Kings

 

[BikeBuilder43]

Well at least now I know why I've never seen a flat top piston. I never knowingly buy 48cc motors.

 

[gary55]

Well at least now I know why I've never seen a flat top piston. I never knowingly buy 48cc motors.

The new one should be a major improvement.

 

[BikeBuilder43]

I cant wait till it comes in. At 135psi I shouldnt have to shave down the head. I know what the power of a stock 66cc should feel like according to my butt dyno. Lol

 

[gary55]

I cant wait till it comes in. At 135psi I shouldnt have to shave down the head. I know what the power of a stock 66cc should feel like according to my butt dyno. Lol

135 is what mine had bone stock.