Mark Wrathall wrote:

I see that www.freedommotors.com is no longer there. This was the
engine
vapourware side of the Moller skycar. Shame in a way bacause the

engine

concept was good and would have been popular for homebuilders if

1/

actually
made and 2/ offered for a  low initial price.

I see http://www.italsistem.com/italiano/XR-8.htm is offering a
Fichtel and
Sachs KM914 derivative for the go kart scene for 3400 euro from
www.HV-racing.de
Here is a short article in German from guys who drove both this

new

engine
and the old (bankrupt) Wankel GmbH engine. They like this new one
better
because it is small and lighter.

http://www.motorsport-xl.de/download/technik/2004/Motoren_0404.pdf

This engine is supposedly made with castings for the

Dimond/MidwestAero

engine.

Found this article on the coatings used by UAV
http://www.manufacturingtalk.com/news/poe/poe114.html

Mark

Did I read that chart right - 34 kW?  Isn't that close to 45 HP?
This
would make a great ultralight engine.

Chris Cosman

Mark wrote:
I looks like 47HP is the peak they recommend from it. This is in line
with
the Midwest (now diamond) single rotor which was certified at about

50

hp.

Googling XR-8 wankel  shows up a fair few hits. I hope Diamond don't
clamp
down on their casting vender for this. The best thing that can happen
is
volume production.

One of these cart engines with a 3+:1 planetary reduction and a three
bladed
prop would make for a really tasty Hummel bird.

Mark

It's too light.  You would have to tweak the design.  Go with a 4:1
planetary and get the static thrust up with a big diameter prop.

Chris C.

Mark wrote:
With my fat arse on board, I just need to move the seat a couple of cm :) If
you increase the prop diameter you need a longer gear.

Mark

 
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