rubber glued to engine cover works!

As far as I am concerned this small step helps quiet things down more than anything else. I rode my bike after putting grease on the gears( on the clutch side) and glued a rubber mat on the cover and it sounds like a new motor.
I am shocked at how much of a difference this makes. Now I will work on getting rubber on the cooling fins of the head.

I did a Norman trick on my cooling fins. We cut short peices of vinyl tubing and stuffed in between the fins on the head. I quietened things down quite a bit....................

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I know that with tubes you are still getting some air to flow, put it has to cut down on cooling

A lot of dirtbikes use(d) rubber chunks between the fins and it doesn't seem to affect them, except for sound deadening.

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If it ain't broke, and you mess with it long enough, it will be.

I'm sold. This will be my next engine mod...can't wait to hear the difference!

If your worried about the cooling being blocked by some tubing to quiet down the fins vib. think about a dirt bike in the mud?! the engine can be packed in mud and it keeps on going. May not be the best thing in the world for it but it will not kill it. Air cooled engines run with a bunch more clearances than water cooled.
I don't fret about these bike engines if it does blow so what, I don't have a small fortune in it, it a motorized bicycle not a rolls. I say have fun with these ride them like you stole it and put it away wet these are not a crown Jewel just a bicycle with a cheap engine, and a cheap made one at that. More likely rejects or seconds sent to us. Take one all the way apart and see the quality of the manufacturing on these. There ain't none.

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motor assisted bicycle engine headlights that work off of your white power wire. check it out

You said it Norm!

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If it ain't broke, and you mess with it long enough, it will be.

This sounds like a good idea. What kind of rubber and what kind of glue?

66

I hear you Norm, but riding in 110deg. weather still makes me nervous

If it does add oil they ain't going to last for ever. You could go to a kart shop and buy a head temp gauge and monitor the temp. American power sports sells a nice gauge and it has a tach and a cht tap to boot. it can remember your max rpm, head temp and cht. all this cause when racing you ain't looking to see if your engine is being over revved or if you exceeded at max temp etc you are trying to get around the guy in front or keep the guy behind you behind you not worrying about the abuse the engine is taking.
The price for this little gauge is the price of an engine kit last time I bought one so I don't run one as I said I don't worry about the temp and weather or not its going to melt. I worry about how far am I going to have to pedal this thing if it does break and it will more than likely be a flat tire. So far I've made it home with out walking even when I broke an axle.

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norms-iron-works.tripod.com
motor assisted bicycle engine headlights that work off of your white power wire. check it out