Hello,
My first post, have been lurking for past few weeks getting info before I bought anything and just signed up.
I bought a 66cc kit on eBay and a new Schwinn Drifter. The engine castings look better than I expected although they have been bead blasted. I did some light disassembly after I got it. The first thing I noticed is intake is complete junk, no way that thing will ever stay tight on a vibrator like this as there is not room for fastener head to contact anything more than edge of weld and weld itself is pathetic, protruding well into the port. Definitely going to need revamped. Next thing I noticed is clutch shaft is quite loose in bore, like maybe 1/16" undersized. Is this common to these engines and is it a problem area? Other than random torque if any on fasteners engine looks okay.
I have substantial experience with Husqvarna chain saws and have done several complete rebuilds. My intention is go through the entire engine before I mount it to the bike. I did some research on crank bearings and I see them advertised with a single metal shield on a 6202 bearing. I keep a set of SKF 6202C3 as 372 Huskys take them but they are open bearings. Does anyone know if these engines are supposed to use a shielded bearing and if so why? Crank bearings are the most important component in a two stoke engine longevity wise and I want them to be right. I figure if the crank balance is near right and the SKF bearings will make the bottom end trouble free for more than the life of the engine. Also, wouldn't it be better to use rubber sealed bearings on the jackshaft bearings? I know from experience that the bearings with metal seals rust pretty fast and don't seal that great either.
I have seen some posts about the poor quality of the crank seals. Are there better ones available? Do they have problems staying in?
I noticed the gaskets are very poor quality. Are decent gaskets available or is it better to go with Threebond if thickness isn't an issue? I have a mountain of used socket head bolts from saws so I will use them where I can and buy any fasteners that look iffy.
Also, I bought a rope starter separate from the kit but didn't realize how wide they make the engine. Can you run one on the bike and still be able to pedal it, or is it even practical? I thought it would make it a lot easier to warm up the engine and do any tuning.
Any comments or suggestions on this will be appreciated. Thanks
My first post, have been lurking for past few weeks getting info before I bought anything and just signed up.
I bought a 66cc kit on eBay and a new Schwinn Drifter. The engine castings look better than I expected although they have been bead blasted. I did some light disassembly after I got it. The first thing I noticed is intake is complete junk, no way that thing will ever stay tight on a vibrator like this as there is not room for fastener head to contact anything more than edge of weld and weld itself is pathetic, protruding well into the port. Definitely going to need revamped. Next thing I noticed is clutch shaft is quite loose in bore, like maybe 1/16" undersized. Is this common to these engines and is it a problem area? Other than random torque if any on fasteners engine looks okay.
I have substantial experience with Husqvarna chain saws and have done several complete rebuilds. My intention is go through the entire engine before I mount it to the bike. I did some research on crank bearings and I see them advertised with a single metal shield on a 6202 bearing. I keep a set of SKF 6202C3 as 372 Huskys take them but they are open bearings. Does anyone know if these engines are supposed to use a shielded bearing and if so why? Crank bearings are the most important component in a two stoke engine longevity wise and I want them to be right. I figure if the crank balance is near right and the SKF bearings will make the bottom end trouble free for more than the life of the engine. Also, wouldn't it be better to use rubber sealed bearings on the jackshaft bearings? I know from experience that the bearings with metal seals rust pretty fast and don't seal that great either.
I have seen some posts about the poor quality of the crank seals. Are there better ones available? Do they have problems staying in?
I noticed the gaskets are very poor quality. Are decent gaskets available or is it better to go with Threebond if thickness isn't an issue? I have a mountain of used socket head bolts from saws so I will use them where I can and buy any fasteners that look iffy.
Also, I bought a rope starter separate from the kit but didn't realize how wide they make the engine. Can you run one on the bike and still be able to pedal it, or is it even practical? I thought it would make it a lot easier to warm up the engine and do any tuning.
Any comments or suggestions on this will be appreciated. Thanks