Cnc/carbon mid drive (vesc, 6374/80100 Motor)

[Zeurus]

Hey, me and my brother Mathias wanna say hello to you guys

here are some pics of our latest build. We machined all the parts ourself (i milled and my brother turned)

Motors are 2turnigy 6374 130KV and alienpower 80100 130KV.
Total weight is about 7kg/6.5kg for the mechanic and 9kg for the 48V battery(12s12p_Samsung 29E) in our backpack.
the noiceless freewheel is inside the mechanic.

sadly the vesc`s arent stable enough (voltage spikes through the long battery wires (maybe we need more caps))
we were able to pull out 5,5kw so far (48V /150 phase amps/100 battery)

currently we decided to go with nucular 12f controller and a bigblock motor (lmx60) in future with custom housing for aprox. 3times the surface for better cooling and maybe a welded frame.

Alex

 

[SlowCo]

Very nice!

 

[Grantmac]

How is the squat under power with that high chainline?

Those are a seriously cool set of builds!! I'd like to see how you handled the rear hub and also integrated the LMX motor.

 

[Zeurus]

SlowCo: thx

Grantmac: squat wasnt that bad, but my brother had problems with his clothes getting in the chain XD

 

[Merlin]

video?

 

[Grantmac]

SlowCo: thx

Grantmac: squat wasnt that bad, but my brother had problems with his clothes getting in the chain XD

Yes that would be a bit too exciting!

Any chance of a hub picture? These are amazing builds.

 

[Zeurus]

what do you mean with hubs?
the bikes are normal again and the mechanic is in our company, so difficult to take pictures atm^^

im currently doing a new thread with our new bikes.
as i dont have a youtube acount i dont know how to upload vids xd

 

[Zeurus]

heres a small video of our first testing of the mechanics, but after 50km of riding i have blown the vescs... that was the reason for our new built^^

[youtube]pmNzmoes1ic[/youtube]

 

[Grantmac]

I mean how you run both a brake disc and sprocket.

 

[Zeurus]

only can do a pic of the new bike, but its quite similar to the old one.
Its just a adapter. The only thing you have to be carefull, is that the chain runs straight from chainwheel to chahinwheel.

 

[Grantmac]

Would you sell that adapter? It's exactly what I've been looking for.

 

[bionicon]

I am also interested in that adaptor

 

[Zeurus]

sadly its not that simple... its really custom made for every bike.
different wheel hubs (width,diameter,form ), tire width, position of the motor, type of brake for min clearance.

 

[Grantmac]

It fits around the spline created by the brake mounting fixture correct? I've had something similar in mind and another design using a centerlock hub to get it bolted behind that area.

 

[Zeurus]

yeah it fits around the form from the brake mounting. centerlock is difficult to machine (we would need specific tools) so we picked a hub with 6bolt.

 

[Grantmac]

I was going to use a center lock to 6 bolt adapter the mount off the back side. Not sure it will be strong enough though.
Your adapter is beautiful, makes my manual machining look very rough.

 

[Zeurus]

its strong enough. on our old bikes we had it that way, and it doesnt matter if its not that smooth looking like machined in a cnc machine. what count is: you made it youself, so be proud of it!