that snow makes me shiver lol. great video, what motor and battery are you using on that set up, my next bike i am thinking about trying something instead of a hub motor. Motorized bicycles most definitely provide many smiles per hour
The motor was just 1000watt 36v, the controller was also 1000w 36v but after monitoring the power with an watt meter.. I was seeing peaks of 1200-1300watts.. the torque from a 7T sprocket is comparable to other ebikes that draw several 1000's of watts.. +50km/h speeds..would require more voltage... but its possible...
I actually tried a 5T sprocket couple years back, and it had so much torque the motor shaft twisted into two pieces...
thats with just a 750watt motor on 36V.. (10mm shaft)
the small tooth count sprocket (7T) on the motor is really what enables the fun performance... but it comes with a price... as much faster wear is noticed.. and increased maintenance (chain retention) needed.. The stock 11T motor sprockets will last a heck of alot longer but you dont get the standing low speed torque...
ie. every tooth lost is 10% more torque gained - 10% lower top speed.. approx...
The solution is probably as simple as a 1 stage reduction...
11t motor to a 22T+ sprocket on a shared shaft with an 11T sprocket on the end, driving the cranks on a 95T sprocket.. (#25 - 1/4" chain)
The batteries were cheap Lipo from hobbyking..
approx. 40V @ 8000mah - 10 cells / 1850g ($180 + ship)
Ive been watching the newer chemistries from Panasonic.. same type batteries that go into the Tesla cars...
approx. 40V @ 8250mah - 15 cells / 1350g ($135 + ship)
but the pack needs to be built - soldered together etc...
Just awesome man.. Too good.. I will try to have similar solar panel set up.. Very very nice stuff.
Thankyou LeslieBanks
I made the panels from Plaskolite..
HomeDepot
