Interesting Electric Road Bike with Bafang Mid Drive

[Fordulike]

Saw this on eBay and thought what a great looking and interesting bike:

EBIKE ELECTRIC ROAD / TIME TRIAL BIKE UNIQUE VERY FAST 250W UK ROAD LEGAL

 

[Eaglerider]

This looks interesting too:

http://www.ebay.co.uk/itm/EBIKE-ELECTRIC-ROAD-TIME-TRIAL-BIKE-UNIQUE-VERY-FAST-250W-UK-ROAD-LEGAL-/151537682842?pt=UK_Health_Beauty_Fragrances_Women_s_Fragrances_PP&hash=item234859899a

 

[Croxden]

It looks just the thing I would never want.

 

[EddiePJ]

Flat bars and hub drive and that would be just the kind of thing that I'd want.

I quite fancy the idea of building something like that. I'm surprised that it isn't lighter than the stated weight though.

 

[mfj197]

Flat bars and hub drive and that would be just the kind of thing that I'd want.

I quite fancy the idea of building something like that. I'm surprised that it isn't lighter than the stated weight though.

A significant part of the weight is the battery pack - this particular pack seems to weigh 3.5kg (see this thread on Endless Sphere where the weights of a BBS01 with this pack are detailed).

I've just started a conversion of a flat-bar road bike myself. Starting weight is 10.9kg and the BBS01 motor conversion should add 4kg overall when the current Shimano Sora crankset and front derailleur components are removed. Add to this the battery - I'm welding up my own pack and am currently debating whether to stick with 10s3p 8.7Ah at 1.5kg or add another ten cells for an 11.6Ah at 2kg. Not sure yet!

Michael

 

[Deleted member 4366]

...... and am currently debating whether to stick with 10s3p 8.7Ah at 1.5kg or add another ten cells for an 11.6Ah at 2kg. Not sure yet!

If you're light, say <70 kg, 10S3P, and if you're heavy, say >90kg, 10S4P, If you're 80kg, carry on debating.

 

[mfj197]

Thanks d8veh. I'm 75kg. Plus I'll be running 20W of lights off the battery as well. I think I'll build the 10S3P pack but leave excess nickel strip in the pack so I can easily convert it to a 10S4P if needed?

Michael

 

[Deleted member 4366]

Good idea. The only point I was making is that there's not a lot of point making a light-weight system if you're a heavyweight yourself. At only 75kg, you should see the advantage of the lighter weight.

 

[Fordulike]

I notice some rim damage on one of the carbon fibre wheels. Can this be fixed, or is it a case of replacing the whole wheel?

 

[flecc]

I notice some rim damage on one of the carbon fibre wheels. Can this be fixed, or is it a case of replacing the whole wheel?

Replacement at a high cost or live with it if the damage is superficial. Carbon frame/fork/wheel failures are sudden and catastrophic and repair is not really a safe option.
.

 

[RobF]

It looks just the thing I would never want.

Agreed, dreadful contraption suitable only for a skip.

 

[Fordulike]

Replacement at a high cost or live with it if the damage is superficial. Carbon frame/fork/wheel failures are sudden and catastrophic and repair is not really a safe option.
.

Maybe the reason they're getting rid of the bike.. Mmmmmmm

 

[robbyheansen]

Wow, Bafang motor,made in china.
But it seem that Chinese people can not buy it in china, I find many website, I can not find their motor. Why?

 

[Deleted member 4366]

You should be able to buy the motor from BMSBattery in China.

 

[robbyheansen]

Yes, thank you