What size Bottom Bracket do I need.

[jay clock]

when fitted the new one is flush with the shell like this

 

[Citius]

So you hadn't actually tried to fit the cups into the shell, despite proclaiming that they were too small..?

 

[jay clock]

Here is the old cup and the new cup side by side. not 100% clear from the pic but threads are identical just the outer rim is different. anyone any idea why?

 

[Sea of vapours]

Hmmmm...... yes. That's what I was alluding to in post number 8. Glad it's sorted anyway

 

[jay clock]

So you hadn't actually tried to fit the cups into the shell, despite proclaiming that they were too small..?

correct. I took one look at the outer size and assumed they were wrong. I cannot for the life of me see why they have reduced the outer size, other than to save a couple of grams

 

[simon.r]

Weight and aesthetics I assume.

 

[jay clock]

the mistake I made was not at least trying them for size. They looked wrong so I assumed they were. Post #8 was right @Sea of vapours !

 

[jowwy]

So why state on numerous occassions that they didnt fit the shell.....when you hadnt even tried fitting them?

 

[Citius]

the mistake I made was not at least trying them for size. They looked wrong so I assumed they were.

Maybe time to review your sig..?

 

[jay clock]

So why state on numerous occassions that they didnt fit the shell.....when you hadnt even tried fitting them?

I thought they didn't! Just being a plonker. It is a couple of months since I tried, and having stripped it down then, I didn't bother to try fitting it since it looked so wrong, and the tool wouldn't fit ( and I hadn't spotted the adapter for the tool!). I enjoy having a go, and have learnt something new. And have reduced the bike weight by 14g!

 

[jay clock]

Maybe time to review your sig..?

I am great at touring but not repairs!

 

[Scoosh]

14gm eh ?
You'll be able to carry an extra gel or Twix or even … … a Mars bar !

Don't get too carried away, though !

 

[Gravity Aided]

Nah, carry the Twix. This is cycling, not some bacchanal.

 

[ayceejay]

A tip for future mechanical adventures. Clean your bike first.

 

[cyberknight]