Newbie question about ebike derailleurs

[John Galvin]

Nonsense.

I run my BBS02 on a 10 speed set up. Despite what intuition says, narrow 10 speed chains are no weaker than 7/8 speed chains (and most are stronger, as it's getting harder to find good quality 7/8 speed chains now the market has moved on) and wear is not greater with narrow chains.

Well, I wouldn't quite call it nonsense! The first site I came to said not to do it, although logically it shouldn't really make a big difference.
I'll keep mid drive in mind as I know it has some advantages.
Will the Tern still fold nicely with the BBS installed - has anyone done it?
I'll count the teeth when it arrives - does the BBS come with different setups depending on how many teeth on the ring?

 

[trex]

...
Will the Tern still fold nicely with the BBS installed - has anyone done it?
I'll count the teeth when it arrives - does the BBS come with different setups depending on how many teeth on the ring?

I suppose it does, it's not that unlike this Woosh Zephyr-CDN:
this one has 44T chainring, I pedalled it leisurely at 15mph last month.

 

[John Galvin]

I suppose it does, it's not that unlike this Woosh Zephyr-CDN:
this one has 44T chainring, I pedalled it leisurely at 15mph last month.

Thanks

Will have another look at mid drive before I make a final decision.

 

[amigafan2003]

amigafan2003 - I agree with you. I can't see why 9/10 speed chain should be any weaker.
Do you think your BBS02 would win in the Bristol Park Street race?

I don't know - what's that?

My MAC equipped commuter was faster.

 

[trex]

http://www.pedelecs.co.uk/forum/threads/bristol-bike-day-22nd-june-2014.17594/
Bristol Bike day. d8veh will be there, racing.