bbs02 or gng on this vintage bike?

[1KW]

I own one of these, bridgestone mb2...they are worth some money to collectors. I dont want to install a hub motor and risk damaging the dropouts, ect. So I was thinking middrive, since this bike is made to pedal and has a long wheelbase so its great for setting up as a tourer/mtb/commuter.

bbs02 would be nice, however a gng will be slightly faster? and will have more off the shelf parts locally

 

[r3volved]

Afaik speed is relatively the same +-5kph
GNG is heavy and more complex as far as points of failure are concerned. I would think the BBS (being much lower profile) as the better option for that particular frame.

 

[puregsr]

Middrive may cause some indentation markings/deformity on the bottom bracket surface if that matters to you.

 

[1KW]

Middrive may cause some indentation markings/deformity on the bottom bracket surface if that matters to you.

that was another question of mine also.

 

[spinningmagnets]

For long and steep uphills, the BBS02 might not stand up to the heat, but for relatively flat terrain plus mild hills up to 30-MPH (45-kph) the BBS02 seems to have a lot of satisfied customers.