It did really well on the flat and on the moderate short hill along my test track. The problem came on the long slow grade. The engine bogged down and I couldn't help it enough to keep it pulling. I also couldn't lift it from the tire easily so it just went into 'Kill Bill mode'. A few more cc's and a bike with gears on the wheel, It was on my bmx type test bike. I think a centrifugal clutch would have saved the engine. It isn't frozen but it turns really hard now unlike before.
Hey I had a week's worth of problem solving so it was great fun. Everything else I have can be used in some other project so nothing was really lost on it. I have used those carbs on other small engines so I will find a use for the parts. Mostly I got a chance to evaluate the gas engine after having been into the Ebike frame of mind. It's one thing to say the 2 cycle engine is noisy and smelly. It's quite a different thing to experience it. It is one thing to say that gasoline give you more power per once than a battery, but it is something else to feel that. So yeah it was worth it.