Speaking of which, I have another question about these - sort of. A while back on the I-BOB list, someone wondered if there had ever been any aluminum cottered cranks. I don't think this TA design was brough up, but about that time I had spotted a bike at the recycling center that appeared to have a cottered aluminum crank.
That crank was made by SR (Japan), but I couldn't see the end of the axle because the arm was closed off - not even a dustcap. It didn't appear to be a two-piece type, but rather a regular cottered type, only with aluminum arms. I didn't look any closer because the bike was a dreadful peice of junk with no other interesting features.
Anyway, does anybody know anything about this? Was it a regular cottered crank, as is usually done in steel, or could it have been a copy of the TA design? I have my doubts about aluminum holding up with cotters (for athat matter, how did that TA design fare in service?).
Of course the bike question went to the smelter long ago, or I'd have gone and had another look by now :-).
Karl Frantz Sterling, Massachusetts -------------------------------------------------- Karl.Frantz@juno.com
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