external type bb,s questions

[haydnw]

Just as an aside, I recently had my first play around with an external BB, when the one on the bike I borrowed ground to a halt after some particularly muddy riding. It was easy enough to just knock the old sealed bearings out and get some new ones off eBay for about £2 a set. Bashed those in and it runs very nicely now. Not sure how long it'll last, but it was certainly a cheap and easy way of getting it back up to speed!

 

[MikeD]

err so what holds the cranks on then?

Pinch bolts on the LH crank.

 

[The Ken]

have you cross checked the bearing code for cheap ones in ebay?

Hope bearings are custom made and the size isn't freely available - the inner diameter is 1mm smaller as you don't use a tophat with them.

 

[cyfa2809]

oh i see
well i guess if they are more expensive but last longer
it works out the same