Another cheap mid drive build :D

Skalabala · Apr 10, 2014

Hi members.

Sharing another build with you that I helped a friend with. Any questions feel free to ask. Hope I can help ES members in some way.
I always like to look at pics to see how people have done stuff.
I like the way we did this one. The motor and jackshaft assembly will get two extra brackets as at the moment the frame is bending under torque :shock:

The motor used is MY1020. 36V. 2050rpm

crossbreak · Apr 14, 2014

nice built

the frame is bending under torque

wasn't made for such abuse. That is why mounting the motor to the botton bracket directly is the prefered method. You can use self made sheets that take the forces.

Skalabala · Apr 15, 2014

crossbreak said:
nice built

the frame is bending under torque

Click to expand...

wasn't made for such abuse. That is why mounting the motor to the botton bracket directly is the prefered method. You can use self made sheets that take the forces.

That will be great to mount it there, but the motor was far to wide

I will sometime, use that method

Dauntless · Apr 15, 2014

Hey, I agree, nice build. Hardly the model of engineering excellence, but IT DOESN'T HAVE TO BE to be a good job. Some people seem to forget that.

crossbreak · Apr 16, 2014

if it shall last a while, people should not forget that :mrgreen:

Skalabala · Apr 16, 2014

Its a very simple method

And the jackshaft is so much better than the one I made for my first build http://endless-sphere.com/forums/viewtopic.php?f=28&t=58634
At the moment both bike are gathering dust as we are struggling to get batteries that are affordable for us

It will last to give a blast :mrgreen:

crossbreak · Apr 18, 2014

my first and second ones where far from optimal either

I forgot the sheet that takes the chain load either at first.. but added it later

I propose you try that too.. all middrives must have such a sheet to the BB.

http://endless-sphere.com/forums/viewtopic.php?f=3&t=34146&start=25#p539417
How minedid not work

http://666kb.com/i/c2h236bh6jep52hr8.jpg

robnewyork · May 24, 2014

excellent design.

Another cheap mid drive build :D

Skalabala

1 kW

crossbreak

1 MW

Skalabala

1 kW

Dauntless

100 TW

crossbreak

1 MW

Skalabala

1 kW

crossbreak

1 MW

robnewyork

100 µW

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