Is an Electric Mezzo possible

[birthstar]

I have bought a Mezzo Mezzo Folding Bikes and have been considering adding some power to help out with the hills around Bristol.

So far I am coming to the conclusion that with its super folding bits getting in the way I am going to find this near impossible (I am looking to put together a front hub set up with a throttle).

I have read there exists an 80mm Tongxin motor which I think might squeeze into the space but I was not able to find dimensions of it on the Tongxin website. The two dimensioned drawings I found both look about 101mm wide for the front fork options.

Any pointers out there? Any helpful ideas would be nice too

 

[jerrysimon]

Yes there is an 80mm Tongxin. For a 16" wheel the preffered option seems to be a 36v 260RPM one.

Check here

Freedom E-Bikes - Other Bike Electric Conversion

and here

index | The Electric Wheel Company

Or build yourself from here

Das Elektrorad von Frank Scheftlein: Komplette Pedelec- / Elektrofahrrad Umbausätze und Ersatzteile von Bafang, Puma (eZee), Tongxin u.a.


Frank will be back on line end of October.


Regards

Jerry

 

[daniel.weck]

I bet that Frank will be exporting the "FWF" Tongxin clone (with the added bonus of being compatible with disc brakes). He used to sell it from Germany already. See here for manufacturer details:

http://www.pedelecs.co.uk/forum/electric-bicycles/4753-tongxin-hub-motor-clone.html#post60206

Cheers, Dan

 

[jerrysimon]

Dan I am not sure if that is too large i.e. not 80mm like the Tongxin ?

Regards

Jerry

 

[birthstar]

Thanks!

Is this is 80mm motor? http://www.tongxin.net.cn/en/down/dianji2.jpg

From the various photos of installs I have seen it seems that it is not possible to use quick release skewers with the motor (these are required for the folding mechanism on the Mezzo). Is this correct?

 

[daniel.weck]

Thanks!

Is this is 80mm motor? http://www.tongxin.net.cn/en/down/dianji2.jpg

From the various photos of installs I have seen it seems that it is not possible to use quick release skewers with the motor (these are required for the folding mechanism on the Mezzo). Is this correct?

I would not use quick-release nuts with hub motors.

Some close-up photos here:

http://www.pedelecs.co.uk/forum/electric-bicycles/4682-diy-stage-1-received-bafang-tongxin-kits-photos.html#post59187

and here:

http://www.pedelecs.co.uk/forum/electric-bicycles/4747-diy-stage-4-16-wheel-lacing-building-photos.html#post60154

 

[flecc]

Thanks!http://www.tongxin.net.cn/en/down/dianji2.jpg

From the various photos of installs I have seen it seems that it is not possible to use quick release skewers with the motor (these are required for the folding mechanism on the Mezzo). Is this correct?

Yes, quick release skewers are impossible with any existing hub motor, some having cable entries within the spindle and at least one having a two section spindle. The motor torque is such that the spindles have to be very firmly clamped into the frame with full nuts, and in many cases anti-torque arms are fitted as well.
.

 

[birthstar]

Thanks flecc, in that case it seems that the answer for the Mezzo is not if you want to keep the ability to fold.

 

[daniel.weck]

I bet that Frank will be exporting the "FWF" Tongxin clone (with the added bonus of being compatible with disc brakes). He used to sell it from Germany already. See here for manufacturer details:

http://www.pedelecs.co.uk/forum/electric-bicycles/4753-tongxin-hub-motor-clone.html#post60206

Cheers, Dan

Actually, that "FWF" motor seems to be much larger than the Tongxin. See here for photos (scroll down):

Pedelec German forum with Google-Translate