Peter, we went with the mid-mount E-4 kits on a couple of EZ-3SX's for
all the reasons you mention, and the better price. The 16" front wheels
made the decision easier. It would be interesting to see if the
torque/speed works on the 20" front wheel, but I have concerns about
pre-mature fork failure from the extra stress. I think the E-4 is also
more of a fail-safe system.
----Bennett http://www.lydiancity.com

--- In ez3usx@yahoogroups.com, "pstoupas" <pstoupas@...> wrote:
>
> I will be adding electric power assist to my USX and I am considering
2
> options:
> a. mid frame mount (ala electro-cycle e-4 motor)
> b. Front Hub motor on the front 20 inch wheel
> I like the concept of the mid-frame approach as that lets me use the
> rear gears for torque/speed trade-offs.
> The front hub approach is probable the easiest to implement, but I am
> concerned with the weight distribution on the USX that the front
wheel
> will spin out especially on a hill.
> I would appreciate any comments/recommendations.
> Thanks,
> Peter S.
> PS. I am leaning towards a Phoenix/cruiser 48V front hub motor.
>