No flange on drive side cup? Nishiki Custom Sport
#1
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No flange on drive side cup? Nishiki Custom Sport
Hello,
I fully disassembled, cleaned and am now reassembling this bike. Putting in the BB and noticing there is no flange on the drive side cup. I did not notice this on disassembly. Is it supposed to have a lock nut or do I just seat it tightly when the threads bottom out? I have never seen this before!
thanks,
Gary
I fully disassembled, cleaned and am now reassembling this bike. Putting in the BB and noticing there is no flange on the drive side cup. I did not notice this on disassembly. Is it supposed to have a lock nut or do I just seat it tightly when the threads bottom out? I have never seen this before!
thanks,
Gary
#2
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It needs a lock nut.
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Did it screw in counterclockwise?
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#6
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I sure thought I had all the parts! And I usually photo document...but not on this one!
Has anyone seen a drive side cup without a flange? Or a drive side cup with out a flange and with a locking nut?
Has anyone seen a drive side cup without a flange? Or a drive side cup with out a flange and with a locking nut?
#7
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However, there was definitely a ring on the other side. I thought it was odd, though. There's no flange on the fixed cup side. But I don't know if (and suspect it's not) the same case you're dealing with.
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So I just pulled (probably) the same BB from an old Nishiki the other day and the only lockring was on the NDS, there was nothing on the drive side. So that makes me wonder what keeps it from loosening lol??
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#9
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Well, I have found a shot of the bike during disassembly, there was just the cup tightly seated in the shell. Strange. Anyone seen this condition before?
Thanks.
.
Thanks.
.
#10
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But it was the same thing: I spun the fixed cup down until it was snug and overly difficult to turn (careful not to thread the shell by accident), installed lube and balls, installed NDS cup, added lockring, snugged and adjusted to perfection and kept on trucking. Rode it for a month or two, the tank that it was, then listed it on eBay. I think someone in TX bought it for $175, then paid another $160 to have my LBS pack and ship. Dunno!
Yes. See link in my last post.
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#12
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I mean, you may still be missing something, I know I am. Been looking for my mind for years now and ... wait, what were we talking about?
By the time I got a "real" shop job in the 90s, everything bike boom was a disposable tank costing more to repair than it was worth, I guess maybe that's how I managed to go my entire short-lived career as a wrench without dealing with this situation. There was at least one older guy in the shop that would typically take on the cottered and older bikes and leave the young guys to the newer stuff though. Your bike looks like an 80s model, so I'm surprised I never worked on one similar. Dunno! Maybe another member with a couple of decades of experience than me can chime in.
By the time I got a "real" shop job in the 90s, everything bike boom was a disposable tank costing more to repair than it was worth, I guess maybe that's how I managed to go my entire short-lived career as a wrench without dealing with this situation. There was at least one older guy in the shop that would typically take on the cottered and older bikes and leave the young guys to the newer stuff though. Your bike looks like an 80s model, so I'm surprised I never worked on one similar. Dunno! Maybe another member with a couple of decades of experience than me can chime in.
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On this note, the weight of the BB is astonishing. Definitely bike boom low end.
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The right cup will tend to screw itself in tighter from precession. You wondered if it was meant just to drive in and stop. I don’t like this idea because the cup will always be trying to force new threads into the shell, even if the ones there now are just right. But if you need the cup to stop shy of the bottom of the threads, you definitely need a lock ring.
Anyway, PM me if you want one. We’re supposed to be staying at home except for essential shopping here till 22 Feb., and our local post office has had Covid outbreaks, so I can’t ethically regard this as an essential errand. (I have to go to the p.o. to mail it, Customs paper work.) From the number of cars on the road, I don’t think many people are staying home. Still...
Edit: I see from @shoota’s recent post that his fixed cup goes in till it’s flush with the shell. So no room for a lock ring. Guess you just drive it till it stops. Precession keeps it there. Sorry for the red herring.
Last edited by conspiratemus1; 02-12-21 at 04:56 PM.
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Funny, I would think the eccentric could just be knocked this way or that a few mm. They can move sideways too! I'm guilty of employing that trick, within reason! Nowadays I have shims for it, but aluminum freehub spacers will also work in a pinch.
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Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
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