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PostPosted: Wed Oct 28, 2020 9:32 am 
Dirt Disciple

Joined: Wed Aug 12, 2020 8:31 am
Posts: 54
The right-hand-side threads on my newly-acquired Cannondale are partially stripped (old BB welded in over many years - not my doing!). My LBS who got it out said it 'should be OK' after they re-cut the the threads, but ideally use a BB with more/ longer threads than the Shimano that came out. I wouldn't be able to torque it up as much that's for sure due to lessened thread depth.

I have a Shimano and Stronglight JP-400, both measure pretty much 13mm from the underside of the RHS cup lip.

Anyone know if any particular brand has longer/ more threads? Looking for one in 122mm or so - for Exage cranks. Exotic brand? Cheapo brand? I don't need to go down the route of a YST threadless one as the LHS is fine...yet....

The LHS of these BBS have way more threads....grrrr!

Thanks


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PostPosted: Wed Oct 28, 2020 9:49 am 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32799
I have the exact same problem with a 73mm BB :facepalm:

What did mine in is was the absurdly short 5mm of thread on a new Octalink BB

I do have one of the very early cartridge BBs that has the plastic cup on the drive side, this has made life a bit easier but it limits the cranks to square taper.

I am also going to start looking external BBs that have a longer thread so I can use the frame.


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 Post subject: Re:
PostPosted: Wed Oct 28, 2020 10:36 am 
Dirt Disciple

Joined: Wed Aug 12, 2020 8:31 am
Posts: 54
Shoulda said 68mm regular shell, taper axle style. All regular stuff for the Exage. So, might an earlier Shimano plastic RHS cup have more thread than the UN72 I have in the shed? Or any brand that typically has longer threads?


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PostPosted: Thu Oct 29, 2020 12:37 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Fri Oct 10, 2008 8:44 pm
Posts: 3871
Location: Wherever it is, I'm being just that little bit more Lance
legrandefromage wrote:

I am also going to start looking external BBs that have a longer thread so I can use the frame.


These have a looooong thread.

https://www.chainreactioncycles.com/shi ... -prod38345


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PostPosted: Thu Oct 29, 2020 1:55 pm 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32799
perfect!


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 Post subject: Re:
PostPosted: Thu Oct 29, 2020 2:14 pm 
Dirt Disciple

Joined: Wed Aug 12, 2020 8:31 am
Posts: 54
Sob sob, still looking for a hot lead on a taper BB with similarly loooong threads....


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 Post subject: Re: Re:
PostPosted: Thu Oct 29, 2020 2:48 pm 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32799
TreaderSteve wrote:
Sob sob, still looking for a hot lead on a taper BB with similarly loooong threads....


Then let me introduce you to <fanfare> Shimano UN300!

Looks nice and long at least when compared to older ones

Image

https://www.ebay.co.uk/itm/Shimano-BB-U ... %3A2334524


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PostPosted: Thu Oct 29, 2020 2:51 pm 
King of the Skip Monkeys
King of the Skip Monkeys

Joined: Wed Nov 07, 2007 4:34 pm
Posts: 32799
Some RED clones too

Image

https://www.ebay.co.uk/itm/Shimano-Type ... 0005.m1851


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 Post subject: Re:
PostPosted: Thu Oct 29, 2020 4:18 pm 
Dirt Disciple

Joined: Wed Aug 12, 2020 8:31 am
Posts: 54
Oooof, wicked, the Un300 looks very promising cheers!


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