So, I've been breaking in my new (and first) motorized bicycle. It now has about 15 miles on it. I'm running 16:1 conventional Super-Tech (Wal-mart) 2-stroke oil for the break-in period.
Until late today, at around 20 mph (4500 rpm) she would seem to "top out" and fall on her face at WOT, and I never pushed it. Today though, while going down a short but steep hill, gravity assisted and pushed her to 25 mph. I gave her the throttle for the hell of it, and it just sort of "came to life" and pushed on up to 30 mph as I ascended the matching hill on the other side. Since then I've opened it up a couple of more times briefly on the flats, and the dead spot is mostly gone. It still stumbles just a little at around 20, but then picks up and will go right up to 35 (about 7500 rpm).
I'm just wondering if this sounds like normal behavior as the rings wear-in and seat? Or does the flat spot in the middle of the rpm range at WOT sound indicative of a particular sort of breathing issue for the engine?
Anyone want to either explain what's going on, or speculate about it? I'm curious what to expect and what to watch out for. I'm kinda a noob to two-stroke performance issues, design, and considerations, but I'm eager to learn.
Until late today, at around 20 mph (4500 rpm) she would seem to "top out" and fall on her face at WOT, and I never pushed it. Today though, while going down a short but steep hill, gravity assisted and pushed her to 25 mph. I gave her the throttle for the hell of it, and it just sort of "came to life" and pushed on up to 30 mph as I ascended the matching hill on the other side. Since then I've opened it up a couple of more times briefly on the flats, and the dead spot is mostly gone. It still stumbles just a little at around 20, but then picks up and will go right up to 35 (about 7500 rpm).
I'm just wondering if this sounds like normal behavior as the rings wear-in and seat? Or does the flat spot in the middle of the rpm range at WOT sound indicative of a particular sort of breathing issue for the engine?
Anyone want to either explain what's going on, or speculate about it? I'm curious what to expect and what to watch out for. I'm kinda a noob to two-stroke performance issues, design, and considerations, but I'm eager to learn.