Folding Bikes - Un72's going out the door.
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12-30-07, 01:00 AM
Went the UN72 route as the LBS wasn't interested in damaging their tools on tapping out the BB.
There is a bunch (whats the collective noun for a pile of BB's) of UN72's in the Uk for sale on ebay.
I bought one from them before and it is in brand new condition with fast delivery, will do business with them again etc etc.
A heads up, I think the expression is, for R20 owners.
12-30-07, 05:11 AM
...and like that they're gone.....
12-30-07, 06:26 AM
There's more there now. Are they a suitable spindle length?
12-30-07, 06:56 AM
Hmmm. I've ordered one, which means I now need Phil Wood rings,and, I guess, an install tool too. I was planning to go the plastic BB route. I guess that also, when the UN72 wears out, I'll be stuck needing a Phil BB as well, but at least that will be when I'm not springing for the rest of the parts!
12-30-07, 04:46 PM
If you promise to send them back :), you can borrow my install tools if you like.
Least I can do for you after you xmas theft woes.
They're just sitting in my toolbox not doing anything anyway.. You'll have to wait till I get back from the US though - ie mid-jan.
12-30-07, 06:06 PM
Well, I won't be ready before then anyway. Thankyou! Although, if I'm going to use Phil rings, maybe I should just spring for the tools. I won't want to have to call you and wait for the post every time I want to do anything with the BB!
12-30-07, 06:37 PM
Haha I guess that's true!
Was up in Boston this weekend. If I'd thought (and had the time) I should have popped over to Harris Cyclery. Thinking about getting some rings for non-folding twenty in garage before I leave the US to save on postage. Maybe I should get two sets and save you some too? PM me if you wanna go for it - I'm here for another couple of weeks.
12-31-07, 01:50 AM
Actually, it doesn't look like they're any cheaper than getting them from HubJub in the UK. The tools are marginally cheaper though, so if you snapped me up a pair of those, that'd be fabulous!
12-31-07, 06:21 AM
Well, this won't work in a R20 as the threading in the BB is not "English", but you can get the Phil Wood adjustibility that comes with his shoulder-less mounting rings by grinding off carefully just the shoulder of the fixed-cup ring.
A little blue Locktite, and you now have a couple of mm of left to right movement for those touchy chain-lines.
Will certainly work in English threaded BB shells. I believe Shimano made UN72's in Italian thread too.
12-31-07, 12:41 PM
You can fit UN-72 into a Twenty's bb shell with Phil Wood rings that are specially made for 26tpi raleigh threads. I think some people get 'Raleigh' and 'English' threading mixed up. Yes Raleigh bikes are English but the threading is Raleigh specific.
That's what this thread is essentially about - you remove the shimano cups and substitute with the Wood items that are made especially for Raleigh's bespoke bottom bracket threading.
It's a fix that definitely works - my bike and many other Twentys that borrow this fix from the Man Sheldon himself are testament to this! :)
@ Sammy - I'll see what I can do for a pair of tools for you.
12-31-07, 12:51 PM
hey why dont you just recut the thread in the bb shell?
Ive done it to a few old raleighs...Grifter Phaser old Cruiser bike and my 20.
On the first ones i didnt even use a proper tool
Just wound in and backed off with a english BB cup. Takes ages costs nothing
my shop would charge .....£13 or so for a Crank / BB fit. They would rethread the BB.
As they say Branches every where...
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