I respectfully disagree with the 250cc comment. Pictures of why may be posted later.But if you really need to go 55, you will be much better off buying a used 250 cc "dual purpose" motorcycle. And you will spend less cash for that than what you will spend trying to get an OP Roller up to 55.
Where should we send your sympathy card to.Still seems to be working fine. I found it was running rich. I guess being set for 16:1 SAE30 junk, it would have been right. I'll be sanding the head soon, and I'm thinking a pipe should be in the works.
I have the 2 stroke tuner's handbook, so hopefully I can work something up. Anyone have a design that works well for lower RPM cruising? I'd like to cruise at 5.5-6k and I'm going to have a tiny rear sprocket to make it possible, but I don't think it'll have the oomph to hold speed with the little spinner installed.
I need it to hold 55mph for miles at a time to ride it where I live without getting run over by coal trucks, and even @ 55 I will get on their nerves at times.