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

C

c_a

100 W
Joined
Jan 4, 2011
Messages
161
Location
east germany, behind the wall
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
 
That is an amazing build! I sure don't have the patience for carbon fibre...
 
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!
 
Really nice work, gotta love CF. Did you document the build at all?
 
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-Info-Enduro-aus-CFK.pdf
 
Thanks, even though I don't read German, I was able to pickup on some useful ideas.

c_a said:
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-Info-Enduro-aus-CFK.pdf
Click to expand...
 
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?
 
SamTexas said:
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?
Click to expand...

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 :)
 
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:
mopnacheinsatz.jpg
 
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).

IMAG0749.jpg


IMAG0758.jpg
 
Hi,
it is selfmade.
Every csv file has 6000 lines and here you see what you can make with them:
voltages:
adm_1.jpg


temperatures (T1 = air, T2 = battery, T3 = motor infrared)
adm_2.jpg


speed (offroad)
adm_3.jpg


I like it! :)
 
are you planning on selling those battery monitors?
if so, when/how much?
if not, any chance you can reveal how it was made so others can duplicate?


truly amazing build.
 
Some weeks ago I built a second battery for the bike.

With a new type of cells we have now 5.15 kWh in the same box!!!

The new cells are 200wh/kg and they are so strong :)

will compete in the 3h enduro racing series http://www.endurocup.de we execpt nearly 2hours ride time with the new battery and 1.5hours with the old one.

Best regards
Christian
 

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