Cleaning BB threads Q and wrong way around???

[Harryburgundy]

Had an Ebay bought UN91 delivered this morning.
Maybe it was from one of you guys? grahamd5171?

Anyway the axle length is wrong...described as 115 actual = 107

But it might fit the new build.

Tried the cups in three different frames and none of them take the BB.
The threads must be pretty sh*tty. I have cleaned them up with a wee wire wool and some degreaser etc, but no good.

Any tips?

Failing that, back to the seller for refund...

Ta
Carl

 

[letmetalktomark]

Are you sure its not an Italian thread?

Seen a few of these in 107mm axel lengths on ebay recently.

 

[legrandefromage]

have you tried the bb 'the wrong way round' - cup on the right and bb in on the left?

 

[Harryburgundy]

have you tried the bb 'the wrong way round' - cup on the right and bb in on the left?

:shock: Erm...that works :? Never had a BB the wrong way around before
Still way to short for Middleburn cranks though.

See the For Sale section.

Cheers chaps

 

[legrandefromage]

have you tried the bb 'the wrong way round' - cup on the right and bb in on the left?

:shock: Erm...that works :? Never had a BB the wrong way around before
Still way to short for Middleburn cranks though.

See the For Sale section.

Cheers chaps

'smug' mode back on... I am the shizzle.

 

[Harryburgundy]

Nice one LGF. Geezer ain't ya

 

[one-eyed_jim]

If it's this one:

it looks to have a normal thread - right hand thread on the left (flangeless) cup, and left hand thread on the right (flanged) cup.

I've never seen a UN91 that mounted from the left, and left and right are pretty clearly marked on the cartridge body...

:?

 

[perry]

have you tried the bb 'the wrong way round' - cup on the right and bb in on the left?

Funnily I read yesterday that some shimano BBs have the cartridge on the left and adjuster cup on the right , can't say Ive ever seen one though and it just seems odd to have it that way ; Maybe they were only common in LGF's area

 

[one-eyed_jim]

Maybe they were only common in LGF's area

They were only found on cheaper models, so the kind of thing that's more likely to show up at the tip...

http://bernd.sluka.de/Fahrrad/Shimano/T ... 0_1995.gif

http://bernd.sluka.de/Fahrrad/Shimano/T ... 5_1995.gif

Maybe there was some advantage for automated assembly - though I can't imagine what it might be.

In any case, the XTR unit in the picture isn't one.

 

[Harryburgundy]

The BB def, mounts from the LHS which is indeed odd (to me)
Its also XTR quality in terms of weight etc...hollow axle etc
Anyway..back to Ebay when I hear from the seller.