Subject: Report from the far north.
From: Paul
Date: 5/21/2000, 11:12 AM



Hey Gerry long time no hear from. What is happening up there in
Yellowknife?
How's your one rotor coming? Is it smooth?


Gerry Hess wrote:
Well, what's happening up here is I have been rebuilding my business in a
different direction, after getting burned in $68,000 in receivables.  I'm
just about to the point where I can feel comforable again, but it has meant
working hours that kept me away from home and family for all but 35 days in
the last year.  The last time I worked on the plane was May 5/99. I have the
engine installed in the plane and ran it using a 12A ignition system and a
mechanical Bosch fuel injection. 

Sorry to disappoint all you "negative"
power pulsers, but the [one rotor] engine is disgustingly smooth. There is no
discernable vibration at or above idle of 900 rpm. Koerner Engineering of
Tucson earned their money in balancing this. The fuel system I used was not
satisfactory in this application, and I have removed it along with the
ignition, and got Tracy Crook to make me a controller. Recieved that in
October/99 at the start of my busy season, and only last week have I felt
rested up and decided to tackle the install. I have mounted the injectors
and built the wiring harness and now to test it on every pin connection. My
arms have shrunk this year and I now need reading glasses, so I don't trust
the old eyeballs as much, anymore.   I've often wondered how on earth people
could take 6 years to build a plane, but now I'm finding out.

Sounds like the man who knows.  Are these [oil fittings] straight pipe 
threads?  If so, how do
they seal it - with a flange and a gasket/o-ring or with a nut with a
gasket/o-ring or some other way.  Just curious.

These are straight pipe and fit the engine perfectly. They seal with a
flange and O ring. They are however, made of steel and for another $US20+
each, Earls has them in colored aluminium. I'm using teflon hose line
covered in stainless braid with steel AN ends, (thats all that I can get)
and I think steel to steel is better long term and the weight be damned. I
am using #8 line for the cooler as the drilled engine oil gallerys and port
sizes and internal sizes of the original lines were #8. (That should kick
the old hornets nest)
Gerry Hess
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org