[Need info] Old American Classic Titanium BB
03-24-14, 10:11 PM
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[Need info] Old American Classic Titanium BB
Hello all,
I got this old used american classic BB (ti spindle, total weight a bit above 150g)
Everything is in great cond and i'm looking forward to installing it (soon).
However, I had one question. This is a dual lockring setup (for precise chainline ajusting).
BUT, here the lock rings seem to be mismatched.
One is black *steel* the other is silver *alloy*
Bikepro lists an earlier version of the BB with dual black alloy lockrings...
What is the stock lockring config for this exact model ?
Also for some weird reason, the black lockring threads on the cup marked "LEFT", but I can't get it to thread on a standard english threaded left-side cup... this doesn't seem to make any sense, actually.
anyway, the BB looks like it will install just fine and for 40$ this seems like a legit deal.
but i was looking to shave a last few grams just for the heck of it by replacing the steel lockring with an alloy one.
i just don't know where to look for this odd part...
any help is appreciated
thanks !
(yes I did send an email to AC, awaiting reply...)
I got this old used american classic BB (ti spindle, total weight a bit above 150g)
Everything is in great cond and i'm looking forward to installing it (soon).
However, I had one question. This is a dual lockring setup (for precise chainline ajusting).
BUT, here the lock rings seem to be mismatched.
One is black *steel* the other is silver *alloy*
Bikepro lists an earlier version of the BB with dual black alloy lockrings...
What is the stock lockring config for this exact model ?
Also for some weird reason, the black lockring threads on the cup marked "LEFT", but I can't get it to thread on a standard english threaded left-side cup... this doesn't seem to make any sense, actually.
anyway, the BB looks like it will install just fine and for 40$ this seems like a legit deal.
but i was looking to shave a last few grams just for the heck of it by replacing the steel lockring with an alloy one.
i just don't know where to look for this odd part...
any help is appreciated
thanks !
(yes I did send an email to AC, awaiting reply...)
Last edited by bloom87; 03-24-14 at 10:22 PM.
03-24-14, 10:14 PM
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this is the cup marked as "1.37X24 TPI RIGHT"
is it actually the cup that goes drive side on the bike ?
haven't got anything to test at the moment
is it actually the cup that goes drive side on the bike ?
haven't got anything to test at the moment
03-24-14, 11:06 PM
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Yet another issue with using that bottom bracket is the need for the bb's threading to be tapped to a greater depth than may be done to production frame's from the factory.
The alloy lockrings can be breakage-prone when being secured tight enough to prevent loosening during use, possibly why one has gone missing.
Lastly, ti spindles are flexy and sometimes cause creaking at the crankarm taper.
The alloy lockrings can be breakage-prone when being secured tight enough to prevent loosening during use, possibly why one has gone missing.
Lastly, ti spindles are flexy and sometimes cause creaking at the crankarm taper.
03-24-14, 11:11 PM
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i just can't wait to see if I can use this thing correctly
I do have my doubts it'll stay in place. might have to invest in some locktite.
but hey i got it for $40...
i weigh 135# so i'm probably too light to warp the TI spindle...
I do have my doubts it'll stay in place. might have to invest in some locktite.
but hey i got it for $40...
i weigh 135# so i'm probably too light to warp the TI spindle...
Last edited by bloom87; 03-25-14 at 09:03 AM.
03-25-14, 09:02 AM
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hmmm.. well of course AC told me they couldn't be of any help.
Clearly this is not Phil or Paul !
or even White Industries for that matter...
by the way, AC's current offering is absolutely terrible IMHO. and clearly none of it seems to be made in the USA anymore.
Clearly this is not Phil or Paul !
or even White Industries for that matter...
by the way, AC's current offering is absolutely terrible IMHO. and clearly none of it seems to be made in the USA anymore.
Last edited by bloom87; 03-25-14 at 09:17 AM.
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