Advice on removing older eccentric bottom bracket

[rflynnr]

Hi,

I have an older Thorn Me N U2 (and by older I mean up to 15 years old). One of the eccentric bottom brackets has seized (and I mean seized beyond all efforts to loosen it). However the effort of attempting to get it to move has worn away at the holes used to turn the bracket within the frame and I need to replace it. (It looks like this https://www.sjscycles.co.uk/bottom-brackets/eccentric-bottom-bracket-insert-taiwanese-fits-thorn-voyager-explorer-tandems-etc/incidentally.) Given my location it looks like I'll have to do the job myself. But my question is: can the EBB be removed simply by loosening the two frame bolts or is there some additional mechanism controlling lateral movement (to prevent the bracket moving sideways while in the frame)? If so, what and where is it?

Thanks in advance

[Peter_K]

On my newer Thorn Nomad there is no such "additional mechanism controlling lateral movement". It can easily be removed by unscrewing the two frame bolts.

I have two frames with excenters from other manufacturers, and those excenters can also be removed after loosening the bolts.

So I guess that will also be the case with your Thorn Me N U2.

[Javier]

@rflynnr,
If I were you I would ask SJS mechanics, they know the stuff and they are very helpful.
Regards
j

[rflynnr]

Hi guys, thanks for the advice - both of which I took. SJS recommended a gentle tap with a mallet which did the trick.

[jags]

is there such a thing as a gentle tap with a mallet
glad it worked tho.


jags.