Hey guys, thanks for the information! I think that I will try to find/modify/build a frame to fit this engine. I'm definitely investing in quality wheels and brakes as well. The wheels will have 11/12 gauge spokes. I will keep everyone informed on this build.
Maybe this engine will become a nice option for motorbikers who would like a bit more power and comfort?
Wret, what frame is that? Are there plans that I can purchase/download? It looks sweet!
Here are some better comparison pictures that should give a better idea of the size of this engine. It isn't much larger than a HS50 with 4G transmission in any way except for height. I bet that the HS50 with mount and transmission is greater than 30 lbs as well. Note that the red bike with the HS50 uses a 19" frame.
P.S. The oil left in the engine is light colored so I am hopeful it was well cared for.