darn .049 motors how do you

reptile Mon Jun 10, 2013 4:27 pm

how do you get the glow head off the newer 2 slot motors the whole piston sleeve comes off all the time!!! and there is not flat spot on the sleeve so how do you get it tight on the block?

I know the old ones have a flat spot you can use the wrenches on?

THANKS

kevbo Mon Jun 10, 2013 4:33 pm

The two top fins on the cylinder should have milled flats. The wide slot in one of the factory wrenches fits these flats. Some of the older wide exhaust motors had this too.

JPvelo Mon Jun 10, 2013 4:53 pm

Some of the newer cylinders don't have flats. If this is the case wrap the cylinder in leather, an old belt is perfect. Use a pair of Chanel locks on the LEATHER. CAREFULLY hold the cylinder this way while you use the Cox wrench on the glow head.

Jim

reptile Mon Jun 10, 2013 5:59 pm

JPvelo wrote:Some of the newer cylinders don't have flats. If this is the case wrap the cylinder in leather, an old belt is perfect. Use a pair of Chanel locks on the LEATHER. CAREFULLY hold the cylinder this way while you use the Cox wrench on the glow head.

Jim

thanks for the input

...but that is one dumb cox design!!

jsesere Mon Jun 10, 2013 6:17 pm

You can wedge it between 2 pieces of carved wood in a vice. Heating up the cylinder might help.

gcb Mon Jun 10, 2013 6:32 pm

How new are these cylinders?

I remember years ago when Cox tried the screen over the exhaust, then the narrow slits...both reportedly for preventing or lessening the possibility of grass fires, removing the cylinder was apparently an oversight. You could not use the normal wrench in the exhaust, and no flats on top. Don't know how many were made that way.

George

pkrankow Mon Jun 10, 2013 7:51 pm

Such a fire from injecting fuel through a cylinder with a lit glow plug can occur. Happened to me once, happily only the gravel was burning, very briefly. I quite plainly over-primed the engine.

Phil

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darn .049 motors how do you

darn .049 motors how do you

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Re: darn .049 motors how do you

Re: darn .049 motors how do you