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Anyone,
What changed on the list that caused the
email addresses to go away about last March? The posters address used to show
on each msg and now it doesn’t. In order to find a poster’s address, you now
have to search for an msg from them that is older than around March 2014.
Wha Hoppen??!
Bill
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net]
Sent: Thursday, July 24, 2014 3:17
AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Rv7
renises p port
Will try again , email won't let me send pics to lancair, if u like
send me your email and I'll post some pics of what I've done.
As per ecu I'm running a microtech ecu which has worked well for quite
a while.
I don't have a rev limit set so the prop limits the rpm, I don't see
over 7100 with the current prop.
I've installed taller apex seals to help cpe with flex over the open
ports over the original renises ones, otherwise engine is stock apart from all
original inductions systems totally removed, just 2 x 2" pipes coming
strait out of the rotor housings, all extra holes blocked off totally.
All manifold was custom made by myself with new injector placements.
I'm quite impressed with the improvement over what it used to be like,
I can get airborne approx 100 ft earlier now.
Christian
Sent from my iPad
James,
I don’t know if you are using Tracy’s
EC-2 or 3, but it has a rev limiter somewhere around 7500 rpm. I don’t
know what would happen if you invoke this limiter but it might be scary.
:>) I try to limit my Renesis to about 7200 rpm in order to stay away
from the limiter.
Do you have any pictures of the P Port for
the Renesis? Did you substitute any parts to do this?
Bill
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: Wednesday, July 23, 2014
7:45 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Rv7
renises p port
I don't know jack about slippage, but I think it is the percentage
difference between actual distance traveled and theoretical distance traveled if
your propeller corkscrewed through the air with no thrust. B I found a prop
slip calculator online and for 86 inch pitch, 2.85 gear ratio, 7000 rpm, 180
mph, I get 10% slip. B Granted the calculator was for boat propellers, but I
don't think it matters as long as the units are correct. B There has to be some
slip because there would be no thrust otherwise. B So what is considered a
reasonable or good amount of slip? B Using Bill's numbers 86 inch pitch, 2.85
gear ratio, 7000 rpm, 200 mph, I get 0% slip. B That can't be right!
On Fri, Jul 4, 2014 at 7:19 AM, Bill Bradburry <flyrotary@lancaironline.net>
wrote:
Christian,
It seems that you have a lot of prop slippage at cruise. B I think that at
that prop rpm you should be getting 200mph if you had no slippage.
Bill
-----Original Message-----
From: Rotary motors in
aircraft [mailto:flyrotary@lancaironline.net]
Sent: Thursday, July 03, 2014 4:01 PM
To: Rotary motors in
aircraft
Subject: [FlyRotary] Rv7 renises p port
Well hi all
Just thought I'd throw out there the mods I,ve done to the renises in an
rv7'.
Well the p ported engine is now back in the plane and running well, over the
standard short manifold that was originally in the plane I have gained
around 400 static rpm, same prop and gearbox combo, 2.85 ratio, this equates
to allot more hp at takeoff, just shy of 2300 prop rpm, I'm running a prince
p tip prop at 68" x 86" pitch,
At 8000 ft it is turning 7000 at 180 mph tas which is an improvement of 25
mph on previous tests, . So next plan is bigger prop and less pitch to let
it rev to 7500 in strait and level.
Cheers
Christian
Rv7 renises Aus
Sent from my iPad
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