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Old 01-25-2009, 01:49 PM
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junkyard junkyard is offline
Motorized Bicycle Senior Member
Join Date: Jan 2009
Location: st.petersburg fla
Posts: 83
Default Re: milling question

Originally Posted by Retmachinist View Post
I'm not sure what you mean "to fit into a 3 piece bottom bracket?" Milling wouldn't be an option. There are ways to cut square holes, broaches, E.D.M.'s, lazers, water jet, also not sure why you need a tapered square hole? Explain.

yes what jim fit onto the bottom bracket like the crank would....sorry for any confusion

edit:the idea was to make a piece for one side to mount 2 freewheels back to back and a piece for the other to mount the larger sprocket to the engine......both pieces would bolt onto a standard bottom bracket

but the idea revolved around making the square tapering hole like a crank arm has

Last edited by junkyard; 01-25-2009 at 01:56 PM. Reason: addition
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