Commencal Supreme dh v1 project

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Commencal Supreme dh v1 project

Postby Rox » Sat Jul 15, 2017 10:53 am

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I've been lurking on the forum for a while, but now I'm about to start a project to electrify my trusty old downhill mountain bike. This is my first conversion and I don't know too much so I would appreciate all the help I can get. What I've gathered so far is that I would probably be better off with a hub motor as I don't want to start cutting off chain guide isgc tabs. The rear has 135mm spacing so I assume I can install Mxus motor with 26" dh rim or even motorcycle rim. The frame triangle is kind of tight so fitting in a controller and battery will not be easy. I was hoping I could get some saddle bag type storage or fabricate a small enclosure with very small battery. My main use for the bike would be riding up local trails so that I can coast down. I was thinking I would like to have just throttle and no pedal assist sensors or brake sensors.

What do you guys think? Do my thoughts make any sense?
Last edited by Rox on Mon Jul 17, 2017 4:53 am, edited 4 times in total. View post history.
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Re: Commencal Supreme dh v1 project

Postby the12be » Sat Jul 15, 2017 11:09 am

brake sensors is a must :D if you pull the throttle the brakes will not stop it without motor cut off

but Yes like bike two in this post will work well just use one bike brake cut off on the back brake Or front if you got big balls :twisted:

viewtopic.php?f=6&t=38754
Last edited by the12be on Sun Jul 16, 2017 6:41 pm, edited 1 time in total. View post history.
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Re: Commencal Supreme dh v1 project

Postby Rox » Mon Jul 17, 2017 1:50 am

Wow, That carbon fiber-look alloy battery compartment is nice. I don't think I will be able to fit in a such a large one though. I'm aiming for rides of 5-20k so what kind of Ah I should be aiming for considering I would be using it just for uphills (50%) and limping home.

Do you really think the kill switch is totally mandatory? I've been driving a KTM electric motorcycle and I don't think they have such fail safe in place. I guess you can fit those fairly easily so it is not totally out of the question, but I would just want to build a clean build as possible. Minimum components = less parts to fail.

Where should I source the kit? I've bought bunch of stuff (LED lamps and carbon fiber mainly) through Alibaba in the past, but with electronics I get sent all kinds of crap. So I would maybe like to find a trusted vendor that can provide just the bits I need (motor with rim, battery, controller + throttle).

Rox

PS. Have been following this monstrosity here and I thought I would park it here for future reference:

viewtopic.php?f=28&t=79082
Last edited by Rox on Mon Jul 17, 2017 2:11 am, edited 1 time in total. View post history.
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Re: Commencal Supreme dh v1 project

Postby Rox » Fri Jul 21, 2017 4:46 am

Where should I source the parts or should I just buy the kit from single source:

* mxus motor with rim = Can I order the hub motor with 27.9mm wide 26" DH rim or should I have it built locally at a bike shop with DT E540? Gear motor? 500-3000w for hills?
*controller = What is best? 12 fet or 18fet? Sabvoton I heard mentioned a lot of times
* throttle
* battery = Can somebody make custom locally or can I order suitable from abroad
* hydraulic brake killswitch
* charger = powerlab?

Am I missing something on my shopping list?
Last edited by Rox on Fri Jul 21, 2017 4:47 am, edited 1 time in total. View post history.
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Re: Commencal Supreme dh v1 project

Postby the12be » Fri Jul 21, 2017 9:44 am

torque arms
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Re: Commencal Supreme dh v1 project

Postby soaresdacosta » Sun Jul 23, 2017 1:54 am

https://em3ev.com/
For everything exept motor.


https://fasterbikes.eu/de/
For motor.


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Re: Commencal Supreme dh v1 project

Postby Cricket_Swe » Sun Jul 23, 2017 2:04 am

I can also recommend Em3Ev for battery. Got their large triangle battery and works great so far

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