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Old Dec 05, 2012, 09:57 PM
OkiThumper is offline
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On the Coxes, engines don't have to be manufactured with the throttle sleeve already installed, if one knows what they are doing. Ace R/C used to sell the rings separately. I've installed them on Black Widows. One needs to make sure that they have the right cylinder diameter to fit. I've put the same on my Sure Start and it fits perfectly.

Of course, if one doesn't feel comfortable removing the cylinder and installing the sleeve, they are better off buying one already made that way.

Bernie at Cox International Canada came up with a choke tube throttle, which I hear is very good. It costs a little more than the exhaust throttle version engines, but I heard the throttling action is more linear. Not having tried one myself though, can't say specifically.
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