Now that you've been able to ride this bike more and put it through it's paces, what do you think of the engine? That's 3.5 hp? Is that right? So it must be around what... 120cc's or thereabouts? Does it start easily, have adequate torque, rev up okay? Would you use a Tecumseh in this hp range again?
I ask because I have three H40 engines (4 hp) and am thinking about using one on a build. That or a 2 stroke Jacobsen of 147CCs. Generally I like 4 strokes better than 2. The Jacobsen would probably give more top end, but I don't plan to go fast anyway. I do need power since it will likely have a sidecar.
Anyway, I'd appreciate hearing what you think of your engine now that you've used it some.
SB
Only thing I dis like about the engine is it has an "easy start" cam shaft. Even had an EZ START sticker on it, promo like.
What that cam does is it keeps the valve open a tad longer so its easy to start. Flip side of that is it peters out like as it starts to get at the mid to upper end of its sweet spot; a built in governor of sorts, and that's what it feels like.
I am convinced the non easy start cam would really be a screamer. Yes use this engine or the ones you have. They sound great. Idle low and have good torque for hills. Pulls slightly harder uphill than the 99cc Predator EZM on the FSC bike.
Its rip rip at low end and off the line it just goes. Yes like the 3.5hp flat top engine a lot. Will not use an ez start cam shaft engine again, its a beast up to its 30mph seems to top at about 34mph but it just refuses to go past 40mph. Had one of these 3.5hp engines on a kart when I was a kid. Think the kart was faster than this bike, I know my kart did not have the same camshaft.
I am looking for another small flat top for Evolution of rust; a bear naked Coupe De Ville.