Creative Engineering
Member
This Morini powered Schwinn Spoiler was built for forum member "Gene" at the Manic Mechanic machine shop...
I spent a lot of time looking at different ways to attach everything without cobbling up the original bike.
There were a lot of hurdles to overcome in order to pull it off. It is not easy to motorize what was not meant to be motorized and create a finished product that is reliable, safe, and appears "production".
The drive set-up solves two problems:
1) Chain alignment from the engine to the rear wheel.
2) How to retain the original rear disc brake and arrive at a final drive ratio that is not too tall.
The engine mounts needed to be placed so that the engine would sit in the frame naturally yet still provide the neccessary unitization that makes the engine "one with the frame", and not a hap-hazard mounted stress monster that promotes future frame cracks.
The tuned pipe: how to route it, how to make it fit the bike, (look good), how to retain the dimensional data provided by Morini, was also a bit of work.
Here are some pics...
Jim
I spent a lot of time looking at different ways to attach everything without cobbling up the original bike.
There were a lot of hurdles to overcome in order to pull it off. It is not easy to motorize what was not meant to be motorized and create a finished product that is reliable, safe, and appears "production".
The drive set-up solves two problems:
1) Chain alignment from the engine to the rear wheel.
2) How to retain the original rear disc brake and arrive at a final drive ratio that is not too tall.
The engine mounts needed to be placed so that the engine would sit in the frame naturally yet still provide the neccessary unitization that makes the engine "one with the frame", and not a hap-hazard mounted stress monster that promotes future frame cracks.
The tuned pipe: how to route it, how to make it fit the bike, (look good), how to retain the dimensional data provided by Morini, was also a bit of work.
Here are some pics...
Jim