I joined this group on Yahoo a few years ago...
https://groups.yahoo.com/neo/groups/...dersGroup/info
Costs nothing to join (HCR Builders Group... go to Yahoo, and click on Groups, then search for HCR ... Horseless Carriage Builders)
Nice guys just like here and you'll get plenty of help on every facet of your Quadracycle build. Have fun!
I plan to build one for campground or airport runner.
JackD