Here is my Preditor pit bike build.

[Wnewq1]

Started with a found mystery frame. Modified original motor.mount and added top mount to motor.
Replaced rear sprocket with #40 chain size sprocket and added jackshaft.
Had a sportster seat cut down and mounted it.
Fabricated a handlebar riser/extender.
Replaced stock air filter with after market kit.
Removed governor and low oil sensor.
Fabricated foot pegs.
Need a new triple tree with larger shocks.

 

[Wnewq1]

Anybody have an idea what this frame was originally??

 

[Kmanator]

No idea on the frame?Chinese sump-ting? I like how you made the Predator engine a stressed member like the Honda 50's are.Those risers look sketchy though,Need gussets/reinforcement.I would slide the seat forward more and may be add a little tank on the back bone?

 

[Wnewq1]

Thanks for the input. Yes the seat looks too far back but I am 6'1" so I placed it where it would fit me.

 

[Kmanator]

Gotcha...I'm 6 feet tall so I know what you mean...Hard to judge the size of your mini? Are those 10 or 12 inch wheels?

 

[Wnewq1]

10 inch

 

[DaddyJohn]

I think using the tank mounting bosses on the engine as a forward mounting point is a pretty clever idea.

Might save that one for an undiscovered future project...