Gavin
I just got the price below from Marine Timbers in Melbourne. The $445 was
for most of the Spruce need to build a KR Fuse. and the hoop pine ply per
sheet.
---
Phillip
price for hoop pine as per list - $445.00
3/32 (2mm) ply $66.55
1/8 (3mm) ply $66.55.
all prices include GST
ex mulgr
Can someone tell me what is the correct skin to use for the spars. I need to
place my order this week.
The plans call for 3/32 mahog. with birch or popular core. I noticed Mark used
birch plywood. According to Wicks prices it would be cheaper and I am about
cheaper.
Finally (I think this was co
mylist.net
Subject: KR> spar skins
Can someone tell me what is the correct skin to use for the spars. I need to
place my order this week.
The plans call for 3/32 mahog. with birch or popular core. I noticed Mark
used birch plywood. According to Wicks prices it would be cheaper and I am
about cheape
Thanks Brian,
I think I will be ordering 2 4x8 sheets of Birch.(for spars only). If anyone
needs to stop me let me know.
Steven Phillabaum
Auburn Alabama>
> Use M90.
>
> I used Mahogany but it did cost a lot. My last two KRs had a lighter
> colored wood that I assumed was birch but I was no
Steven Phillabaum wrote:
> I think I will be ordering 2 4x8 sheets of Birch.(for spars only). If
anyone needs to stop me let me know.
You're right about the cedar. That's the one place on the plane that birch
is required, rather than mahogony.
Mark Langford, Huntsville, Alabama
N56ML "at" hiwa
Behalf Of Mark Langford
Sent: Wednesday, June 30, 2004 10:35 PM
To: KRnet
Subject: Re: RE: KR> spar skins
Steven Phillabaum wrote:
> I think I will be ordering 2 4x8 sheets of Birch.(for spars only). If
anyone needs to stop me let me know.
You're right about the cedar. That's the on
Sorry about the cedar comment. I had a picture of mahogony in what little
brain I have left, and it came out as cedar instead. They kind of look
alike, from about a hundred yards or so.
I don't have a manual in front of me right now, but I believe the manual
says that either mahogany or birch is
"Somebody else is
welcome to check for us..."
Ok I'm reading it right now, so I'll have a look
p.19.
"3/32 plywood
3 ply mahogany, birch or
poplar center."
Cheers.
Peter Bancks
stranged...@dodo.com.au
http://www.homebuiltairplanes.com
http://canardaviationforum.dmt.net
For what it's worth, from the KRnet search engine at
http://www.maddyhome.com/krsrch/index.jsp , using "birch plywood spar" got a
bunch of hits, the one below included. Maybe it's where I got the idea, but
I don't think anybody will argue that birch is not the stronger of the two,
and hence a good
And having said that, here's one from Don Reid where he advocates running
the grain horizontal, rather than vertical. I'd trust just about anything
Don says as gospel.
--
List-Post: krnet@list.krnet.org
Date: Jul 20, 1999 8:27 AM
From: Donald Reid
Sub
tives, Inc.
www.engalt.com
-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of StRaNgEdAyS
Sent: Thursday, July 01, 2004 7:44 AM
To: kr...@mylist.net
Subject: Re: RE: KR> spar skins
"Somebody else is
welcome to check for us..."
Ok I'm readin
e ply) and at
about $80 aud for an 8' x 4' sheet it's a whole lot cheaper than all the
other aicraft grade products!
Gavin
Australia
- Original Message -
From: "StRaNgEdAyS"
To:
Sent: Thursday, July 01, 2004 9:43 PM
Subject: Re: RE: KR> spar skins
[mailto:krnet-boun...@mylist.net]On
Behalf Of Mark Langford
Sent: Thursday, July 01, 2004 8:06 AM
To: KRnet
Subject: Re: RE: KR> spar skins
And having said that, here's one from Don Reid where he advocates running
the grain horizontal, rather than vertical. I'd trust just about anyt
> thickness # plysparallel perpendicular
> 0.125" 3 15.17 5.544
... but after looking at these numbers, I think I just started an argument
with myself. I had to wonder what's wrong with vertical, since that would
be "parallel to the grain", and by far the strongest.
No one has mentioned the 5/8" vertical spruce blocks that the plans call for
when building KR spars. The spars are a variant of an I-beam. The function of
the web in any I beam or box beam is to keep the two caps from coming together.
No matter what loading is put on the beam - plus or minus
At 08:52 AM 7/1/2004, you wrote:
> > thickness # plysparallel perpendicular
> > 0.125" 3 15.17 5.544
>
>... but after looking at these numbers, I think I just started an argument
>with myself. I had to wonder what's wrong with vertical, since that would
>be "parallel
I thought you were an electrical engineer :)
On Thu, 1 Jul 2004 09:21:24 -0400
"Wood, Sidney M." wrote:
>No one has mentioned the 5/8" vertical spruce blocks that
>the plans call for when building KR spars. The spars are
>a variant of an I-beam. The function of the web in any I
>beam or b
Sent: Thursday, July 01, 2004 9:21 AM
To: KRnet
Subject: RE: KR> spar skins
Plywood has an odd number of plies with outside plies in the same grain
orientation. That is the strongest dimension orientation.
Sid Wood, Tri-gear KR-2 N6242
Mechanicsville, MD USA
sidney.w...@t
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