Thanks Ernest,

To all you electric nay sayers take a look at this...
http://www.aviationtomorrow.com/nuke...ew_photo. php

the reason this guy is smilin is hes probably going to be the first
private aviator to have an functional electric airplane...never mind
its costing half a million smackers...ultimately hes gona use fuel
cells...but before that hes using...drumroll please...li ion
batteries...theyre doing the first electric flights in april so well
see...check out the rest of their web site pretty intersting...

you guys are right about lead acid batteries and that weight is the
major limitation but i think general aviation is on the cusp of
practical electic flight...im gona give it a try...and li ion
batteries
are part of my trick too...ive sourced some 10 amp hour li ion
batteries...and my total weight for 20ah@48v will be...well a small
fraction of la bats...not cheap...i also found some 100amp lightweight
controllers that i can run in parallel to as someone correctly
calculated run ~200amps peak...so i might be able to just barely do
it...keep my copper connectors short...and if i can run for 10 minutes
electric i would be happy because i know i could optimize tweek and
lighten to get more...thats the plan...so now i need a REALLY good
prop any more sugguestions appreciated...






Ernest Christley wrote in message om...
Corky Scott wrote:


Sebastian, several people have fabricated composite propellers in
their shop. It isn't easy to do and the prop REALLY has to be of
sound construction in order to withstand the forces of thrust,
vibration reasonance and turbulence.

I suggest you do a search on the internet to see if you can find the
websites of those who have documented their techniques. Be prepared
to spend a LOT of time getting it right.

Propeller design is not simple.

Good luck, Corky Scott

In the library section to my website I have a link to "How I Make
Propeller"

The author does a very good job of telling you things you want to know.