DIY stage 1: received Bafang + Tongxin kits [photos]

[daniel.weck]

Follow-up here (Li Ping LifePo4 battery):

http://www.pedelecs.co.uk/forum/electric-bicycles/4734-diy-stage-2-received-li-ping-lifepo4-battery-photos.html#post59988

 

[jerrysimon]

Nano Brompton

Are the Tongxin's used on the Nano Brompton 24V or 36v ?

I assume they also use the higher 260 RPM ones ?

Regards

Jerry

 

[daniel.weck]

Are the Tongxin's used on the Nano Brompton 24V or 36v ?

I assume they also use the higher 260 RPM ones ?

36V 10Ah battery.

Why an Electric Bike | The Electric Wheel Company

I'm pretty sure they use the high-rpm version.

 

[jerrysimon]

Hmmmm

I see on Frank's site he sells the 24v Tongxin for a 20" wheel.

Der Umbausatz

I am sure this has been discussed hundreds of times before but why is the 36v preferable does it draw less current ?

Also I note the Brompton Sparticle kit is a 24v affair as well.

Regards

Jerry

 

[daniel.weck]

I see on Frank's site he sells the 24v Tongxin for 20" wheel.

Der Umbausatz

I am sure this has been discussed hundreds of times before but why is the 36v preferable does it draw less current ?

You should contact Andrew Hamilton at Freedom E-Bikes, he will probably be able to source 36V 260rpm Tongxins for you.

Freedom E-Bikes - Home

(as far as I understand, higher battery voltage is better as it enables more power for a given current draw)

 

[jerrysimon]

Yes thanks Dan, I been looking again at his site after we had that chat with him on here a while back.

Regards

Jerry

 

[barrycoll]

my 'new' Tongxin nano from the EWC is a 260rpm motor

 

[jerrysimon]

Barry from where ?

PS oh you mean the Electric Wheel Company sorry

Regards

Jerry

 

[kitchenman]

The entire quote is: "The motors have different diameters (Bafang: 125mm, Tongxin: 108mm - from spoke hole centers)"

As you can see, I am talking about the *diameter*, not the *width*

Just measured my Dapush and its about 118mm (thats using a tape measure and 2 nitting needles!) ..
So the Dapush is bigger than the Tongxin and smaller than the Bafang. Does that sound right?

 

[morphix]

Hi Daniel,

I have been to my bank today to send off €230 to Frank, payment for a kit. Much to my annoyance they want to charge me £25 for the privilege. This is a bit of a rip-off.
I wondered if you had found a cheaper way to transfer money to Germany? Frank seems to think that you may have done.
I would appreciate you letting me know if you have. Thank you.

The cheapest way to transfer money into a foreign currency overseas is using Post Office International Payments. They don't charge any fee its a free service, but they do make a profit on the currency exchange of course as they buy at better rates than retail. I find though, it works out like paying about £6 per transfer...a lot cheaper than £25 Also they're super helpful and friendly, and will help you over the phone if you get stuck with complex payments to intermediary banks etc.