KR> Engine Balance

[Mark]

There are Corsairs in Australia?... still flying? As in F4U Vaught?

-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net] On Behalf
Of Phillip Matheson
Sent: Thursday, March 05, 2009 3:44 AM
To: KRnet
Subject: KR> Engine Balance

 I realize there are no Corvairs in Australia, Phil, so this is
not aimed at you.  But engine/prop balancing is worth every penny.  Just
make sure you have your final spinner installed and painted before you do
it.


Very true Mark, But, there are some Corsairs here.

KR> florida craigslist

[John Gotschall]

partial for sale

http://miami.craigslist.org/brw/for/1025882351.html

jg

KR> Ebay listing.

[Paul & Karen Smith]

A recent thread asked about venturi placement. I see this one on E-bay has a
good photo of a venturi. 


Paul Smith
Brisbane, AUSTRALIA
pk.sm...@bigpond.net.au
http://kr2spacemodulator.blogspot.com/


-Original Message-
From: krnet-bounces+pk.smith=bigpond.net...@mylist.net
[mailto:krnet-bounces+pk.smith=bigpond.net...@mylist.net] On Behalf Of
BadBob
Sent: Thursday, 5 March 2009 10:00 PM
To: kr...@mylist.net
Subject: KR> Ebay listing.

http://cgi.ebay.com/ebaymotors/Other-Vehicles-Trailers_Aircraft__KR-2-Experi
mental-aircraft-low-time-hangered-nice-plane_W0QQitemZ330311574378QQddnZOthe
rQ20VehiclesQ20Q26Q20TrailersQQadiZ2829QQddiZ2828QQadnZAircraftQQcmdZViewIte
mQQptZMotors_Aircraft?hash=item330311574378&_trksid=p4506.c0.m245&_trkparms=
72%3A317|65%3A12|39%3A1|240%3A1318#ebayphotohosting


Bob Johnson
badbob0...@embarqmail.com
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KR> Ebay listing.

[BadBob]

http://cgi.ebay.com/ebaymotors/Other-Vehicles-Trailers_Aircraft__KR-2-Experimental-aircraft-low-time-hangered-nice-plane_W0QQitemZ330311574378QQddnZOtherQ20VehiclesQ20Q26Q20TrailersQQadiZ2829QQddiZ2828QQadnZAircraftQQcmdZViewItemQQptZMotors_Aircraft?hash=item330311574378&_trksid=p4506.c0.m245&_trkparms=72%3A317|65%3A12|39%3A1|240%3A1318#ebayphotohosting


Bob Johnson
badbob0...@embarqmail.com

KR> Engine Balance

[Phillip Matheson]

 I realize there are no Corvairs in Australia, Phil, so this is
not aimed at you.  But engine/prop balancing is worth every penny.  Just
make sure you have your final spinner installed and painted before you do
it.


Very true Mark, But, there are some Corsairs here.
John Martindale has one. I can think of.

Yes I had my engine and prop done before you did, and my set up was that 
good, they left it as is.


Phil Matheson
SAAA Ch. 20  http://www.saaa20.org/
VH-PKR
Australia

EMAIL:   phillipmathe...@bigpond.com
KR Web Page: www.philskr2.50megs.com


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- Original Message - 
From: "Darren Crompton" 
To: "KRnet" 
Sent: Thursday, March 05, 2009 4:18 PM
Subject: Re: KR> gross weight?


>
>
> While flying the airplane, it felt like I was seated inside a bubble of
> alumninum foil attached to the back of a giant spinning anvil.
>
>

I remember reading about ML's experience in an RV6 which sounded very
similar.


++

List-Post: krnet@list.krnet.org
Date: Nov 3, 2007 7:16
AM

From: Mark Langford


Subject: Re: KR> Panel
Vibration

Robin Macdonald wrote:

> Before you worry about vibration in the panel I think you would be better
to
> find out where the vibration is comming from & correct that first. You may
> be masking another problem.
> I'll come over & balance your engine/prop for you.

That's a fact!   My Corvair is so smooth you can't feel any kind of
vibration on the panel...and certainly can't see any!  I got my engine
balanced at a Corvair College last year.  I thought it was smooth before I
had it balanced, but there was a real difference afterward.  According to
his numbers, he reduced it by about a factor of five!  That reminds me...I
need to do that to this one, although (again) I can't imagine how it could
be any smoother.

I've done a lot of prop testing lately (several props from other people's
airplanes), and one of them vibrated so badly it made me want to land
immediately and take it off to prevent damage to my engine.  It turns out
that engine was properly balanced, but was not aerodynamically balanced (one
blade was pulling harder than the other one), and this was made by a
"reputable" prop maker!

I was at Moontown a few months ago and an RV6 guy asked if I wanted to fly
around the patch with him.  Sure, why not?  When he did the runup it was so
rough that I thought one whole cylinder of that IO-360 was completely gone,
but he seemed unbothered.  We ran down the 2200' grass strip and I thought
"surely he'll abort the takeoff, it's so rough", but no, we kept going.  On
climbout I thought surely we'd land immediately to see what the problem
was...but no, he just flew away.  I asked "doesn't that vibration make you
nervous?".  He said "Oh, that's the way all these big four cylinder
Lycomings are!"  I do know that he's never had his engine/prop assembly
balanced, and suggested he do so ASAP.

I'm glad I fly behind a Corvair.  I guess you have to experience it to
believe it.  I realize there are no Corvairs in Australia, Phil, so this is
not aimed at you.  But engine/prop balancing is worth every penny.  Just
make sure you have your final spinner installed and painted before you do
it.

Mark Langford, Huntsville, Alabama
see KR2S project N56ML at http://home.hiwaay.net/~langford

email to N56ML "at" hiwaay.net


+


-- 
Darren Crompton
AUSTRALIA

My web site: www.kr-2s.com
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