From: "KR-net users group digest" To: "kr-net digest recipients" Subject: kr-net digest: March 03, 2000 Date: Saturday, March 04, 2000 12:05 AM KR-NET Digest2 for Friday, March 03, 2000. 1. Revmaster hub bolt 2. Smooth Prime 3. Re: engines 4. Re: engines 5. Re: Plywood orientation 6. Re: Plywood orientation 7. Re: Revmaster hub bolt 8. Re: engines 9. Re: Plywood orientation 10. Re: engines 11. Re: engines 12. Re: fuel tank question 13. Salvage engines 14. RE: Plywood orientation 15. Re: Plywood orientation 16. Corvairs 17. Re:leaving the net 18. Re: Subaru Fuel Injection ---------------------------------------------------------------------- Subject: Revmaster hub bolt From: "macwood" Date: Fri, 3 Mar 2000 10:00:12 -0000 X-Message-Number: 1 This is a multi-part message in MIME format. ------=_NextPart_000_002A_01BF84F7.4430CA60 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Netters! My hub retaining bolt has 3 holes drilled = diagonally thro' the head(90deg to the usual wire locking position). Is = this meant for locking the bolt? It wasn't locked when I removed it. = Thanks , Mac W = = Hampshire, England =20 ------=_NextPart_000_002A_01BF84F7.4430CA60 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi=20 Netters! = ; =20 My hub retaining bolt has 3 holes drilled diagonally thro' the = head(90deg to the=20 usual wire locking position). Is this meant for locking the bolt? = It=20 wasn't locked when I removed it. Thanks , Mac=20 W = =20 = =20 = =20 = =20 = =20 = =20 = =20 = =20 =20 Hampshire, England =20 =20

------=_NextPart_000_002A_01BF84F7.4430CA60-- ---------------------------------------------------------------------- Subject: Smooth Prime From: "Dale Baldwin" Date: Thu, 2 Mar 2000 20:36:45 -0500 X-Message-Number: 2 Dana, Applied the 5 coats of smooth prime today. Does 360 grit sound about right? Thanks. Dale Baldwin, sketch013@worldnett.att.com KR-2, priming and painting ---------------------------------------------------------------------- Subject: Re: engines From: "Mark Langford" Date: Fri, 3 Mar 2000 07:59:58 -0600 X-Message-Number: 3 Dan V wrote: > First, does anyone know where I can find out more info about Corvair > engines for our planes? Like the info on GreatPlains. http://www.flycorvair.com/ > Second, couldn't I get an engine from a salvage yard and rebuild it? If so > could I use any air cooled engine (VW, Porsche, Corvair)? Sure, that's where most Corvair engines come from. You'll find replacement parts for the Corvair hard to beat, pricewise, and you'll end up with almost twice the power (with maybe a 50 pound weight penalty. A Porsche is out of the question, unless you're talking about the VW Type 4 that was used in 914's. It will easily cost you 10 times as much as the VW or Corvair for parts, and you simply can't find performance parts, or aircraft conversion parts to fit itI have a little Corvair page with links at http://home.hiwaay.net/~langford/corvair.html , and I have some stuff on Type 4's at http://home.hiwaay.net/~langford/kvw.html Mark Langford, Huntsville, Alabama mailto:langford@hiwaay.net see KR2S N56ML at http://home.hiwaay.net/~langford ---------------------------------------------------------------------- Subject: Re: engines From: flykr2s@execpc.com Date: Fri, 3 Mar 2000 08:00:11 -0600 X-Message-Number: 4 "Dan Villeneuve" wrote: > Two questions. > > First, does anyone know where I can find out more info about Corvair > engines for our planes? Like the info on GreatPlains. > > Second, couldn't I get an engine from a salvage yard and rebuild it? If so > could I use any air cooled engine (VW, Porsche, Corvair)? There is a > salvage yard near here that has alot of old VW and Porsches. I figured if > a porsche engine would work, I could rebuild a Porsche engine and get the > same effect that a corvair would give me. If not, could I still rebuild a > VW engine? Just trying to save cash...and figure if I had to build one > from GreatPlains then I'd save myself the cash and buy one from a salvage > yard. > > --- > You are currently subscribed to kr-net as: flykr2s@execpc.com > To unsubscribe send a blank email to leave-kr-net- 98004P@telelists.com > Dan, Go To William Wynne (The Corvair Authority) web site at http://flycorvair.com and you will find plenty of information. Where are you located? The Corvair engine is readily available. Mark Jones (N886MJ) Waukesha, WI mailto:flykr2s@execpc.com http://sites.netscape.net/flykr2s/homepage ---------------------------------------------------------------------- Subject: Re: Plywood orientation From: "Mark Langford" Date: Fri, 3 Mar 2000 08:07:26 -0600 X-Message-Number: 5 Zipper wrote: > A general question for those engineers out there. Why does there have to > be a specific orientation of plywood outer grain with respect to the spars? > If the material is multi-ply, why should this matter? True. If you use 5 ply wood, 3 of them are in the direction shown on the outside of the wood, and two are 90 degrees to that, so the strength difference in one direction isn't radically different from the strength in a perpendicular direction. Having said that, since that wood is there to prevent buckling, and since there are varying opinions as to whether the orientation should be vertical or horizontal, I'd use what you have with whatever orientation makes it easiest for you...personally... Mark Langford, Huntsville, Alabama mailto:langford@hiwaay.net see KR2S N56ML at http://home.hiwaay.net/~langford ---------------------------------------------------------------------- Subject: Re: Plywood orientation From: RFG842@aol.com Date: Fri, 3 Mar 2000 09:32:31 EST X-Message-Number: 6 I'm probably wrong, but I thought the plywood for the spar facings was thicker than the plywood recommended for the fuselage sides. If you used the thicker plywood for the fuselage sides, only penalty is weight. Strength would be my major concern on the spars. Bob ---------------------------------------------------------------------- Subject: Re: Revmaster hub bolt From: Mike Mims Date: Fri, 03 Mar 2000 06:33:12 -0800 X-Message-Number: 7 > macwood wrote: > > Hi Netters! My hub retaining bolt has 3 holes drilled > diagonally thro' the head(90deg to the usual wire locking position). > Is this meant for locking the bolt? It wasn't locked when I removed > it. Thanks , Mac W > > Hampshire, England Yes the bolt head is drilled for the long cotter pin that goes through the hub and bolt head. -- zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims Sanding and Filling AGAIN! :o( http://www.fortunecity.com/marina/anchor/270/ mirror @ http://www.geocities.com/CapeCanaveral/Hangar/4136/ http://members.home.com/mikemims/ Aliso Viejo CA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ---------------------------------------------------------------------- Subject: Re: engines From: Mike Mims Date: Fri, 03 Mar 2000 06:35:15 -0800 X-Message-Number: 8 flykr2s@execpc.com wrote: > > > VW engine? Just trying to save cash...and figure if I had to build > one from GreatPlains then I'd save myself the cash and buy one from a > salvage yard. > > If you do decided on the VW your best bet is to build one up from NEW parts. Do not build up and old junk yard engine if reliability is a concern. -- zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims Sanding and Filling AGAIN! :o( http://www.fortunecity.com/marina/anchor/270/ mirror @ http://www.geocities.com/CapeCanaveral/Hangar/4136/ http://members.home.com/mikemims/ Aliso Viejo CA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ---------------------------------------------------------------------- Subject: Re: Plywood orientation From: Mike Mims Date: Fri, 03 Mar 2000 06:37:29 -0800 X-Message-Number: 9 RFG842@aol.com wrote: > > I'm probably wrong, but I thought the plywood for the spar facings was > thicker than the plywood recommended for the fuselage sides. > > Bob I thought it was all 3/32 ply. All mine is 3 ply and the ply is vertical as per plans. I have several scar joints. Scarf joints are no big deal. -- zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz Micheal Mims Sanding and Filling AGAIN! :o( http://www.fortunecity.com/marina/anchor/270/ mirror @ http://www.geocities.com/CapeCanaveral/Hangar/4136/ http://members.home.com/mikemims/ Aliso Viejo CA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ---------------------------------------------------------------------- Subject: Re: engines From: "Leonardo" Date: Fri, 3 Mar 2000 12:05:37 -0300 X-Message-Number: 10 LEO TRY THIS www.angelfire.com/ca4/corvaircraft/index.html LEO ,BRAZIL,KR2S 90% READY AND 90% TO GO. ----------------------------------------------------- Click here for Free Video!! http://www.gohip.com/freevideo/ -----Mensagem original----- De: Dan Villeneuve Para: KR-net users group Data: Sexta-feira, 3 de Mar=E7o de 2000 09:45 Assunto: [kr-net] engines >Two questions. > >First, does anyone know where I can find out more info about Corvair >engines for our planes? Like the info on GreatPlains. > >Second, couldn't I get an engine from a salvage yard and rebuild it? If= so >could I use any air cooled engine (VW, Porsche, Corvair)? There is a >salvage yard near here that has alot of old VW and Porsches. I figured = if >a porsche engine would work, I could rebuild a Porsche engine and get th= e >same effect that a corvair would give me. If not, could I still rebuild= a >VW engine? Just trying to save cash...and figure if I had to build one >from GreatPlains then I'd save myself the cash and buy one from a salvag= e >yard. > >--- >You are currently subscribed to kr-net as: adrena.bh@zaz.com.br >To unsubscribe send a blank email to leave-kr-net-176329R@telelists.com ---------------------------------------------------------------------- Subject: Re: engines From: "Leonardo" Date: Fri, 3 Mar 2000 12:10:36 -0300 X-Message-Number: 11 AND THIS ONE TOO www.flycorvair.com LEO, BRAZIL KR2S AVIATION, LIKE THE SEA IS NOT INHERENTLY DANGEROUS,BUT UNFORGIVING OF AN= Y SIGN OF CARELESSNESS OR NEGLECT. ----------------------------------------------------- Click here for Free Video!! http://www.gohip.com/freevideo/ -----Mensagem original----- De: Dan Villeneuve Para: KR-net users group Data: Sexta-feira, 3 de Mar=E7o de 2000 09:45 Assunto: [kr-net] engines >Two questions. > >First, does anyone know where I can find out more info about Corvair >engines for our planes? Like the info on GreatPlains. > >Second, couldn't I get an engine from a salvage yard and rebuild it? If= so >could I use any air cooled engine (VW, Porsche, Corvair)? There is a >salvage yard near here that has alot of old VW and Porsches. I figured = if >a porsche engine would work, I could rebuild a Porsche engine and get th= e >same effect that a corvair would give me. If not, could I still rebuild= a >VW engine? Just trying to save cash...and figure if I had to build one >from GreatPlains then I'd save myself the cash and buy one from a salvag= e >yard. > >--- >You are currently subscribed to kr-net as: adrena.bh@zaz.com.br >To unsubscribe send a blank email to leave-kr-net-176329R@telelists.com ---------------------------------------------------------------------- Subject: Re: fuel tank question From: Lon V Boothby Date: Fri, 3 Mar 2000 07:16:54 -0800 X-Message-Number: 12 I have no thoughts on the fuel tanks, not experienced in that, but I would like to know more about you fuel gauges that you have designed. Care to share your thoughts? Thanks, Lon ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - there's no risk! For your FREE software, visit: http://dl.www.juno.com/get/tagj. ---------------------------------------------------------------------- Subject: Salvage engines From: shanspur@webtv.net (shannon spurgeon) Date: Fri, 3 Mar 2000 10:32:15 -0600 (CST) X-Message-Number: 13 In response to David Goodman: I'm no engineer, only an A &P. The only caution in regard to salvaged engines is to be sure the crankshaft is forged, not cast iron as is common to most auto-VW's. Don't know about the other engines. A cast crank will break quickly under the torsional stress loading imposed by the prop. If you do find a forged crank in a salvage yard, it would be wise to be sure the engine didn't suffer a sudden stoppage which could twist the crank. That's why most just pay the money; for someone else's headaches. If you enjoy working past those obstacles, your engine can be as good as any. Good luck & happy building. Dreaming stage in Wichita Shannon ---------------------------------------------------------------------- Subject: RE: Plywood orientation From: Tom Raby GRE/ER PwrSysOp Date: Fri, 3 Mar 2000 14:24:00 -0600 X-Message-Number: 14 Plywood generally has an odd number of plies so more plies are orinetd in one direction than the other. That's something the designer considers when specifying the material. I'd follow the designers recommendation especially on the spars. Tom -----Original Message----- From: David Goodman [mailto:zipperts@whidbey.net] Sent: Friday, March 03, 2000 12:52 AM To: KR-net users group Subject: [kr-net] Plywood orientation A general question for those engineers out there. Why does there have to be a specific orientation of plywood outer grain with respect to the spars? If the material is multi-ply, why should this matter? Just wondering, as I have an eight foot long section of plywood left over from building my sides that I guess I can not really use unless I scarf it about six times! Dave Goodman zipperts@whidbey.net --- You are currently subscribed to kr-net as: traby@grenergy.com To unsubscribe send a blank email to leave-kr-net-103355K@telelists.com ---------------------------------------------------------------------- Subject: Re: Plywood orientation From: Donald Reid Date: Fri, 03 Mar 2000 15:50:02 -0500 X-Message-Number: 15 --=====================_2793784==_.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed At 10:51 PM 03/02/2000 -0800, you wrote: >A general question for those engineers out there. Why does there have to >be a specific orientation of plywood outer grain with respect to the spars? > If the material is multi-ply, why should this matter? When the spar is loaded, the spar caps try to move in opposite directions. The shear web prevents this from happening. This is from ANC-18, Design of Wooden Aircraft Structures "Although square-laid plywood has been used extensively in the past, the present trend is to use diagonal plywood because it is the more efficient shear carrying material. It is desirable to lay all diagonal plywood of odd numbers of plies so that the face grain is at right angles to the direction of possible shear buckles." The most structurally efficient way to use the plywood with an odd number of plies is to lay it with the face grain sloping down and away from the fuselage if you are primarily concerned with positive loading. If you consider both positive and negative loading, put the front shear web in one direction and the rear shear web in the other orientation. In spite of what the KR plans call for, laying the face grain parallel with the spar is stronger than laying it perpendicular to the spar. Don Reid Bumpass, Va. mailto:donreid@erols.com KR2XL at http://www.erols.com/donreid/kr_page.htm Ultralights at http://www.erols.com/donreid/usua250.html --=====================_2793784==_.ALT Content-Type: text/html; charset="us-ascii" At 10:51 PM 03/02/2000 -0800, you wrote:

A general question for those engineers out there. Why does there have to
be a specific orientation of plywood outer grain with respect to the spars?
If the material is multi-ply, why should this matter?

When the spar is loaded, the spar caps try to move in opposite directions. The shear web prevents this from happening.

This is from ANC-18, Design of Wooden Aircraft Structures

"Although square-laid plywood has been used extensively in the past, the present trend is to use diagonal plywood because it is the more efficient shear carrying material. It is desirable to lay all diagonal plywood of odd numbers of plies so that the face grain is at right angles to the direction of possible shear buckles."

The most structurally efficient way to use the plywood with an odd number of plies is to lay it with the face grain sloping down and away from the fuselage if you are primarily concerned with positive loading. If you consider both positive and negative loading, put the front shear web in one direction and the rear shear web in the other orientation.

In spite of what the KR plans call for, laying the face grain parallel with the spar is stronger than laying it perpendicular to the spar.

Don Reid

Bumpass, Va. mailto:donreid@erols.com

KR2XL at http://www.erols.com/donreid/kr_page.htm

Ultralights at http://www.erols.com/donreid/usua250.html --=====================_2793784==_.ALT-- ---------------------------------------------------------------------- Subject: Corvairs From: "ldeckert" Date: Fri, 3 Mar 2000 15:38:48 -0700 X-Message-Number: 16 This is a multi-part message in MIME format. ------=_NextPart_000_0045_01BF8526.91BE6A10 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All, For all that don't know, there is a US organization that is for = Corvairs. The web site is www.corvair.org. This is the Corvair Society of America. I used to belong to this, but = traded all of the items I had for wood working tools! I know there is a place in the North East, one in Oregon, some in = Arizona and California where you can get parts.=20 There is also a book by Richard Finch (California) who used a Corvair = engine in a Cessna 150, with a gear reduction using the something from a = VW Transporter rear axle (if I remember right, this is about 2:1 = reduction). There are Corvair clubs all over the place, maybe there is one near you. = You can also do a search on "CORSA". Larry Deckert Sandy, Utah 801-561-3573 ------=_NextPart_000_0045_01BF8526.91BE6A10 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi All,

For all that don't know, there is a US = organization=20 that is for Corvairs. The web site is www.corvair.org.

This is the Corvair Society of America. = I used to=20 belong to this, but traded all of the items I had for wood working=20 tools!

I know there is a place in the North = East, one=20 in Oregon, some in Arizona and California where you can get parts. =

There is also a book by Richard Finch = (California)=20 who used a Corvair engine in a Cessna 150, with a gear reduction using=20 the something from a VW Transporter rear axle (if I remember right, = this is=20 about 2:1 reduction).

There are Corvair clubs all over the = place, maybe=20 there is one near you.

You can also do a search on = "CORSA".

Larry Deckert

Sandy, Utah

801-561-3573

------=_NextPart_000_0045_01BF8526.91BE6A10-- ---------------------------------------------------------------------- Subject: Re:leaving the net From: "John Davison" Date: Fri, 03 Mar 2000 15:10:12 PST X-Message-Number: 17 Hello Fellow Aviators, I am sorry to say that I will be living the net for several months. things are very intense at work so I will need to concentrate on work. I hope to make the fly-in at Lake Barkley in September. John Davison :^) Nashville, Tennessee e-mail at padjad@hotmail.com ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ---------------------------------------------------------------------- Subject: Re: Subaru Fuel Injection From: "JC Marais" Date: Sat, 4 Mar 2000 07:41:45 +0200 X-Message-Number: 18 This is a multi-part message in MIME format. ------=_NextPart_000_003A_01BF85AD.177456C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable -----Original Message----- From: ldeckert =20 Is anyone using Fuel Injection with an EA-81?=20 My engine is a 1984 fuel injected, turbo. I've been told that making = the fuel injection work is a problem. If it is a problem, can I somehow = plug the injector holes in the heads? =20 ------=_NextPart_000_003A_01BF85AD.177456C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

-----Original = Message-----
From:=20 ldeckert <ldeckert@gateway.net>

Is anyone using Fuel Injection with = an EA-81?=20

My engine is a 1984 fuel injected, = turbo. I've=20 been told that making the fuel injection work is a problem. If it is = a=20 problem, can I somehow plug the injector holes in the = heads?

------=_NextPart_000_003A_01BF85AD.177456C0-- --- END OF DIGEST --- You are currently subscribed to kr-net as: johnbou@ipinc.net To unsubscribe send a blank email to leave-kr-net-110995W@telelists.com