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I agree, George, When you've gotta have the power, then
you've gotta have the power.
I am certainly not Poo-Pooing PP at all. I
have just (belatedly) come to realize (in the wisdom of my old age), that just
because something is available that can do x,y, and
z, I really don't need it if all I plan to do is
x {:>).
I am certainly eager to see some of you guys work this out
- who knows I may not be able to resist {:>)
Ed
----- Original Message -----
Sent: Saturday, June 30, 2007 5:39
PM
Subject: [FlyRotary] Re: Brazing was
[FlyRotary] Re: PP Construction..
Ed,
All true, but PP comes into it's own when you
need that extra power to match the size of the aircraft.
I'm pursuing the single for those aircraft that
need just a bit more than 100 hp.
I think Richard is doing a great job in this
area, and I hope he is successful.
George ( down under)
Hi Dave,
I was just responding to Doug on whether I thought the
H2000 aluminum brazing rod (pretty amazing stuff) would work to braze the PP
tube to the outer aluminum surface of a rotor housing. I think it
would- provide you are able heat up the housing
sufficiently.
While I find PP very intriguing, I realize that
since I don't fly to the power capability of my stock 13B, there would not
be much point on investing the time and money for a PP. Yes, it could
be nice on take off, but then I throttle back to my normal 7.5-8 gph economy
cruise. So it just doesn't seem to make it worth the effort - for me
and my way of flying.
However, for those who want high speed cruise it
sounds like a good way to go. The problem is other than Richard
Sohn and his PP single rotor, I don't know of anyone who has actually done
it, much less flying with one. The exception is the $$ PowerSport
engine - nice PP, nice power - but expensive.
Ed
----- Original Message -----
Sent: Friday, June 29, 2007 10:24
PM
Subject: [FlyRotary] Re: PP
Construction..
On 30, Jun , at 9:08 AM, Ed Anderson wrote:
Doug, I have not tried that particular brazing job, but I
think it would be much better than just about any other method so far
mentioned. However, that rotor housing is a large mass
of aluminum to get up to temperature brazing temperature, so it would
probably take a high BTU torch and perhaps a larger propane tank (like
for the BBQ grill) rather than the smaller bottles. I would
certainly try it on a junk housing first. But, seeing what they
did in the H2000 video with that stuff, I would say it's certainly worth
a
try.
Ed
Hi
Ed and Doug,
I have been following the posts on al brazing, but I am
not sure I have this right.
Are you suggesting that a SS Pport tube
could be TIG welded to the steel liner inside the rotor housing and brazed
to the cast aluminum housing on the outside?
This sounds like the
ultimate solution
BR, Dave
McC
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