Originally Posted by culvercityclassic
Miked I see you ordered tubing for bicycle frames when it looks like you are going to build a bike that should be built out of motorcycle tubing. The GC160 is not a light motor, has some good torque and you plan on having a swing arm on the bike, thats going to require a structure built to withstand alot.
I noticed on your bike that your seat has no springs, have you ever tried a spring type seat on that bike? Just wanted to see if it road any better with one.
A Harley hard-tail can get by with with no rear suspension cause it has so much rear tire rubber on the road to absorb almost anything it runs over. Skinny bike tires have no such luxury, transmitting the shock throughout the whole rear of the bike, which does not impart stability at high speeds. I can offset it somewhat by standing up on the pedals but I don't what to have to rely on that all the time. Especially when riding in the pitch dark of night.