What chain size for older brompton?

[jhob]

I need to replace the chain on the brompton I just got from my Dad, however I am not sure what size it takes, could anyone advise?

It was purchased in 1997 and has the 5 speed Sturmey Archer hub with a 50T chainring and (I think) a 13t rear.

I've tried to find out myself but can only find that unspecified 'older' bikes used 1/8" rather than 3/32" that are used on current bikes.

[LittleWheelsandBig]

1/8" for 5sp.

[jhob]

Thanks for that.  I'm presuming that any 1/8" chain will work, or do I have to get the specific chain sold through brompton?

[LittleWheelsandBig]

Anything but don't use a chain link to join the chain, re-rivet it

[jhob]

Aye, was planning on doing that but thanks for the heads-up.

So, this KMC chain would be fine with the removal of a few links then?

[rogerzilla]

Yes, but get the length the same as the old chain.  Bromptons are fussier about chain length than your average derailleur bike, because they have to be able to fold without undue slack while also not pulling the chain fully tight as the suspension flexes.

[jhob]

Yes, but get the length the same as the old chain.  Bromptons are fussier about chain length than your average derailleur bike, because they have to be able to fold without undue slack while also not pulling the chain fully tight as the suspension flexes.

Exactly what I was going to do

Ordered the KMC chain, saving of a tenner over the official brompton version.

Seems that brompton do a good line in over-priced spares and after-market parts.

[jhob]

The KMC chain works perfectly.  Saved myself a bob or two there!