General Category > Electric Motorcycle Conversion
New member - Sherco Trials Bike conversion - HPM5000B-48V
Pkay:
Hi All
Thank you for this great forum.
I have just ordered:
HPM5000B-48V BLDC motor
VEC300-48 Controller
LFP 4820 LiFePO4 48V 20Ah battery
The donor bike is a 2016 Sherco 300ST trials bike.
Have ordered toothed pullys and belt for 1:2 reduction transmission (same as Electric Motion design).
Should I start up a new thread (if so in which section) to describe the build?
Bikemad:
Hi andto the forum.
I have moved it to this section so you might as well continue with this thread.
I presume you have already seen this thread regarding gear ratios.
Alan
Pkay:
Thanks Alan for moving the post, and the info on gear ratios.
I have had a good look at the EM bikes and have spent some time riding one.
My design is based on the EM trials bike.
I am doing the 1:2 belt reduction drive transmission.
The toothed pullys and belt are easily obtainable (Gates).
At this stage the default chain sprocket ratio is 10:42 teeth which gives 1:4.2 ratio.
After the 1:2 reduction that gives 1:8.4
I can easily add a smaller chain sprocket at the front if needed (or larger at the rear).
Will wait and see how it rides.
Pkay:
Work has begun...
Engine has been removed.
The frame has been modified to allow clearance for the battery.
Next is electric motor and transmission support structure.
See attached image.
Pkay:
The pullys bearings and belt for the transmission.
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