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TTA cranks

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6PacktoGo

Moderator / Curmudgeon
Joined
May 24, 2001
Messages
261
A customer brought me what is supposed to be a TTA crank. Now, TTA cranks are supposed to be factory cross drilled on the mains. This crank is cross drilled, but it has THREE holes in each main journal. One rod feed hole is drilled straight through the journal, and the other rod feed hole is drilled to connect it to the other two holes.

Has anyone seen exactly how a factory TTA crank is crossdrilled? If so, could you accurately describe it, or post a link to pictures?
Thanks.
 
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