Let's figure out how to put a Tomos moped motor in this Chinese pitbike.

Prototyping motor mount brackets.

Using the 3D printed prototype brackets as a template, I cut steel brackets out of some scrap steel with a plasma cutter.  They weren't intended to be a permanent solution.

Prototyping how to fit the tiny Tomos rear sprocket on a rear wheel designed to have a large motorcycle type rear sprocket.

The final rear sprocket solution.

I rebuilt the Tomos motor while I was at it.

Version one of the exhaust always had a leak at the header pipe that I never did solve.

The silencer kept vibrating off the bike.  This final solution included a dirtbike style soft joint between silencer and exhaust chamber to absorb vibrations, and a strap to hold the silencer on after it inevitably worked its way free.

Pitbikes lack all the lights and controls of a street legal bike.  I adapted various moped parts, like headlight and handlebar controls, to allow for street riding.

I cut up an intake and welded it back together to angle to the left side instead of the right, to avoid interfering with the exhaust chamber.