I wanted to do a minimalist lightweight road legal build. So I picked up this Moby frame with forks, wheel and swingarm from Austin Mopeds. I would have liked to give it two or three speeds, but I want the quietness and simplicity of a hub, at least to start off with.
Here is what I am planning:
17" wheels front and rear. Shinko SR704 17x2.25"
Crystalyte x5304 rear hub (thanks Dogman) (currently shown in pic with 24" bicycle rim/tire)
18fet 4115 cellman 120v controller (Thanks Neptronix/iovaykind)
Battery will start with my 23s ebike lifepo4 pack (cellman a123 / 8ah Headway) which I have many miles on. Will add more voltage with other batteries I have.
Suspension is stock Moby forks and shocks. They are not good, but will do until I upgrade.
Will probably install a front fairing.
Either bicycle pedal cranks or other linear drive for human propulsion purposes. A few reasons why: if it's cold, to improve neighborhood road efficiency, and to get some exercise.
The frame, forks, front wheel, swingarm - weighs 44lbs. Add rear wheel (30lbs), seat, controller, base battery (30), and other small parts (10), looking at 114lbs. More battery = more power.
Goals:
50mph cruise ability (not for long periods, but if I have to)
<120lbs
30wh/mile at 35mph
Respectable acceleration to solidly get ahead of traffic.
Here is what I am planning:
17" wheels front and rear. Shinko SR704 17x2.25"
Crystalyte x5304 rear hub (thanks Dogman) (currently shown in pic with 24" bicycle rim/tire)
18fet 4115 cellman 120v controller (Thanks Neptronix/iovaykind)
Battery will start with my 23s ebike lifepo4 pack (cellman a123 / 8ah Headway) which I have many miles on. Will add more voltage with other batteries I have.
Suspension is stock Moby forks and shocks. They are not good, but will do until I upgrade.
Will probably install a front fairing.
Either bicycle pedal cranks or other linear drive for human propulsion purposes. A few reasons why: if it's cold, to improve neighborhood road efficiency, and to get some exercise.
The frame, forks, front wheel, swingarm - weighs 44lbs. Add rear wheel (30lbs), seat, controller, base battery (30), and other small parts (10), looking at 114lbs. More battery = more power.
Goals:
50mph cruise ability (not for long periods, but if I have to)
<120lbs
30wh/mile at 35mph
Respectable acceleration to solidly get ahead of traffic.