Jeff Wills said:steamer <[email hidden]> wrote in message news:<[email hidden]>...
Quoted message said:--Thinking about putting an electric motor on a homebrew
quad-cycle; has anyone been there/done that? Any pointers appreciated...
I think you'll find this group has done there/been that:
http://groups.yahoo.com/group/power-assist/
Jeff
I think the legal advantages of a trike implementation likely outweigh the technical advantages of a quad.
Generally, a non-motorized vehicle exception has been carved out for low power electric bikes and trikes in which they are legally classified as non-motorized vehicles and hence follow the same laws as bicycle. Common litmus tests include electric mode max of 20 mph and/or 400W motor. A few states have higher thresholds. No exception exists for quads.
However, it appears you are in CA, where the state legislature defined electric bikes in a separate category between bicycles and mopeds and on NON-federally funded biketrails separate from roadways. (A federal statute from 2001 which was prompted by California’s law stopped states from restricting electric bikes on federally funded bike trails).
I’m seeing about 2 electric quadrabents a month popping up on ebay so they are not that obscure.
Rhoades Car has electric models/options: http://www.rhoadescar.com/jumpshow.htm
Here’s a current ebay sociable trike with Zap electric motor, it’d be easy to implement that electrification as a quad.
cgi.ebay.comeBayISAPI.dllOpen ↗
Besides the powerassist group Jeff gave you, here are two smaller sites with more focus on four wheel electric vehicles:
austinev.orgevalbumOpen ↗
autos.groups.yahoo.comev list archiveOpen ↗
(I’m currently getting an error on the Austin ev group link that appears merely to be their server down, but the link/group may not be current)
Here’s another useful link:
electric-bikes.comphysics.htmOpen ↗