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87kg, 4.27kWh, >20kW, fully made from carbon = a lot of fun!

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87kg, 4.27kWh, >20kW, fully made from carbon = a lot of fun!

Postby c_a » Mon Jan 16, 2012 6:07 am

my friend Peter built a electric carbon enduro, some of you already know the battery,
the batterymonitor is developed from me, it has some nice features too (contactless current, IR temperature, 2x contact temperature, full gps with laptimes etc.)

the bike will be completly ready in around two weeks, here are some pics

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first testride with a 400A kelly at 65%
http://youtu.be/rtr-o3zWY84
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby jonescg » Mon Jan 16, 2012 7:59 am

That is an amazing build! I sure don't have the patience for carbon fibre...
Voltron the Electric RG250 - Dual Agnis, Kelly 1200A controller, 6 kWh of A123 cells from Cell_Man and a shitty old chassis from 1985 :| Top speed 180 km/h, max current 600 A @ 100 V.
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Say no to spaghetti junction LiPo! Assembled Hi-power LiPo packs of any size!

Come on Casey! If you want prototype racing, throw your leg over something with lithium in it :D
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby grindz145 » Mon Jan 16, 2012 10:00 am

OMG that thing looks amazing! The goal of my next build is under 200lbs, which is what this is.

Insane you got a full-size dualsport pack built under that weight!
http://www.endless-sphere.com/forums/viewtopic.php?f=18&t=19548 - Ebike Nerd Podcast
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby kfong » Mon Jan 16, 2012 10:06 am

Really nice work, gotta love CF. Did you document the build at all?
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Jan 16, 2012 11:11 am

I am only the responsible for the drive train including battery, motor, controller, wiring and the battery monitor.

Here is Peters last built, a fully carbon bike with Honda CRF250X motor:
http://www.swiss-composite.ch/pdf/i-R-I ... us-CFK.pdf
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby kfong » Tue Jan 17, 2012 10:06 am

Thanks, even though I don't read German, I was able to pickup on some useful ideas.

c_a wrote:I am only the responsible for the drive train including battery, motor, controller, wiring and the battery monitor.

Here is Peters last built, a fully carbon bike with Honda CRF250X motor:
http://www.swiss-composite.ch/pdf/i-R-I ... us-CFK.pdf
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby SamTexas » Tue Jan 17, 2012 10:22 am

Congrats to your friend Peter. Is he going to join ES? Can't wait to see the finished product.

Do you have other stats? Top speed, energy consumption at various speeds, ranges?

And why are cells 13 and 17 highlighted in red?
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Jan 23, 2012 4:16 pm

The carbon crf250x is for sale, here are some pics from today and a new video on the bottom of this post :-)

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http://www.youtube.com/watch?v=hDAZ__PGreQ
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Jan 23, 2012 4:18 pm

SamTexas wrote:Congrats to your friend Peter. Is he going to join ES? Can't wait to see the finished product.

Do you have other stats? Top speed, energy consumption at various speeds, ranges?

And why are cells 13 and 17 highlighted in red?


Hi and sorry for the late reply.
Peter will not join ES, but you can ask me, I will translate all questions and forward them to him.

The cells are highlighted in red because we had loose connections, everything is fixed now :-)
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Jan 23, 2012 4:59 pm

Another video with some pics:
http://www.youtube.com/watch?v=79kwDiOoLNM
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Thu Feb 09, 2012 2:42 pm

did a 30min. round today, sunday we are planning a range test, expecting 100minutes or more

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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby HumboldtRc » Thu Feb 09, 2012 7:43 pm

What motor and controller does it use?
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Fri Feb 10, 2012 4:09 am

Hi!

Lynch D135 and Kelly KDH09400A.

Regards,
Christian
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby sk8norcal » Fri Feb 10, 2012 11:39 am

very cool, ur site?
http://epo-bike.de/
i like that little pocket bike too... :D
this bike needs a name... :wink:



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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Fri Feb 10, 2012 1:26 pm

Yes, this is my site, some content is missing but I will update it soon.
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Tue Feb 28, 2012 4:39 pm

5cycles on the battery, calculated riding time was 100min., Peter was able to get 108mins out of the battery at 80% DOD last sunday at moderate speed, temperature outside was 4-5°C

this is dirty:
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby deVries » Thu May 10, 2012 6:30 pm

What is the weight of just the battery? :?:

Do you plan to offer the carbon frames for sale? :?:

Thanks. :D
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby iamsofunny » Sat May 19, 2012 6:38 pm

wow! Great construction!
That is an excellent machine!
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Mar 18, 2013 4:22 pm

I uploaded some new pics with a small description:
http://epo-bike.de/?page_id=8

My friend is riding at least twice a week, the bike has done other 2000km yet (only offroad).

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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby crusoe » Mon Mar 18, 2013 4:27 pm

Where did you get that battery monitor? Very interested in that!
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Re: 87kg, 4.27kWh, >20kW, fully made from carbon = a lot of

Postby c_a » Mon Mar 18, 2013 4:52 pm

Hi,
it is selfmade.
Every csv file has 6000 lines and here you see what you can make with them:
voltages:
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temperatures (T1 = air, T2 = battery, T3 = motor infrared)
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speed (offroad)
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I like it! :-)
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