Search found 10 matches

by topspeed
Sep 15 2020 10:06am
Forum: Electric Aircraft
Topic: Exhaust fan on velomobile doubling as propulsion
Replies: 11
Views: 191

Re: Exhaust fan on velomobile doubling as propulsion

There may be more to it that meets the eye !

I mean the tail vortices may be reduced by this thrust propellor as well.
nrel.jpg
nrel.jpg (417.52 KiB) Viewed 110 times
Few solar panels/cells could provide 200-300 watts.
by topspeed
Sep 10 2020 2:34am
Forum: Electric Aircraft
Topic: DIY ultralight, Retro biplane style, twinprop
Replies: 9
Views: 3135

Re: DIY ultralight, Retro biplane style, twinprop

I like this guy too.

I hope this biplane story here is not true...second wing gives only 20% more lift ?


https://www.youtube.com/watch?v=0P0K9BSuQqE
by topspeed
Sep 09 2020 10:35pm
Forum: Electric Aircraft
Topic: E-Hawk: Electric Aircraft Build
Replies: 4
Views: 2288

Re: E-Hawk: Electric Aircraft Build

Cool...has it flown yet ?
by topspeed
Sep 07 2020 10:26pm
Forum: Alternative Energy
Topic: Looking into small DIY wind turbines.
Replies: 8
Views: 1593

Re: Looking into small DIY wind turbines.

Well having have to test everything as a pioneer of this kinda invention ( no I did no invent the H-Darrieus but a system in it ) there are many snags in it. The wing became slightly too heavy and stubby...and wrong kinda generator ( a bike hubmotor with planet gear...which is really heavy to turn )...
by topspeed
Sep 07 2020 5:50am
Forum: General Discussion
Topic: cost estimation qte power house with 18650
Replies: 11
Views: 211

Re: cost estimation qte power house with 18650

5000 usd if you just have electricity for a week and use solar and wind.
by topspeed
Sep 07 2020 2:08am
Forum: Electric Aircraft
Topic: Farfles Electric Ultralight.
Replies: 234
Views: 39274

Re: Farfles Electric Ultralight.

First I am seeing this thread , Farfle once you have enough fun in this aircraft with the petrol engine the way to use your electric drive train is on a very efficient airframe ... a Sailplane or as near to a Sailplane as possible. ( I have been up in a few of them and they glide very good so they ...
by topspeed
Sep 07 2020 2:04am
Forum: Electric Aircraft
Topic: Farfles Electric Ultralight.
Replies: 234
Views: 39274

Re: Farfles Electric Ultralight.

I am sorry for the loss of a electric vehicle pioneer mr Jackson Edwards.
by topspeed
Sep 07 2020 1:25am
Forum: Alternative Energy
Topic: Looking into small DIY wind turbines.
Replies: 8
Views: 1593

Re: Looking into small DIY wind turbines.

I have been workin 5 years now on VAWT type wind turbine design...of my own.
santonen3.jpg
santonen3.jpg (509.82 KiB) Viewed 105 times
by topspeed
Sep 07 2020 1:13am
Forum: Electric Aircraft
Topic: The E-Gull
Replies: 12
Views: 3565

Re: The E-Gull

Gabriel testing his new kite: https://www.youtube.com/watch?v=behWqgRHqAU
by topspeed
Sep 07 2020 12:55am
Forum: Electric Aircraft
Topic: motor glider project
Replies: 28
Views: 1082

Re: motor glider project

I wonder if 10 kw was feasible for an electric AC ? I know human powered planes can do with 230 watts continuous power. :wink: