Original Posted By: "Bill Church"
Glenn,As I am just ahead of you in the construction process, this is an issue thatI recently faced.Don't worry about it. There's such a small amount of curvature in thestringers, that "pull" is inconsequential. I thought about removing the stabfrom the jig so that I could install the stringers on top and bottom at thesame time, so that they would balance each other, but decided against it. Ireasoned that if I kept it in the jig (on a flat table) that at least thatwould ensure a warp-free installation on one side, but if I removed it fromthe jig, the stab would be free to twist wherever it pleased. But I don'tthink either method would result in any real difference that couldn't becorrected by cable tension.So, to answer your question, yes, you're being a worrywort again. Just likethe rest of us.Bill C. ________________________________________________________________________________
RE: Pietenpol-List: Stab stringers (was Stanley Surform planers)
Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: "Glenn Thomas"
Subject: Re: Pietenpol-List: correction---tailbrace cables are 3/32" cableBill,I just looked inside at the cockpit area. To the best of my recollection, the longerons were 7/8" wide x 1" high. Dan HelsperPoplar Grove, IL.**************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)________________________________________________________________________________Subject: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Subject: Re: Pietenpol-List: correction---tailbrace cables are 3/32" cableBill,I just looked inside at the cockpit area. To the best of my recollection, the longerons were 7/8" wide x 1" high. Dan HelsperPoplar Grove, IL.**************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)________________________________________________________________________________Subject: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: AMsafetyC(at)aol.com
Thanks Bill,Seeing how it took me over 4 months to get the stabilizer almost done, I reallyfret about things that could flip the applecart in the last couple of steps.The type of warp I'm worried about with the leading edge of the stabilizer can'tbe "adjusted out" with the bracing wires which is where my question was aiming.I guess since you didn't end up with any kind of warp, it is probably somethingyou can address right in the flat jig.Another idea I had that is probably very easy to set up is to use the wall of mygarage as the flat plane and building a jig right on the wall. My garage isn'tinsulated so I have the open bays between studs to get at both sides of thestab. Can't wait to get home and see if there is a clear spot that I can sizeup for this approach.--------Glenn ThomasN?????http://www.flyingwood.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Thanks Bill,Seeing how it took me over 4 months to get the stabilizer almost done, I reallyfret about things that could flip the applecart in the last couple of steps.The type of warp I'm worried about with the leading edge of the stabilizer can'tbe "adjusted out" with the bracing wires which is where my question was aiming.I guess since you didn't end up with any kind of warp, it is probably somethingyou can address right in the flat jig.Another idea I had that is probably very easy to set up is to use the wall of mygarage as the flat plane and building a jig right on the wall. My garage isn'tinsulated so I have the open bays between studs to get at both sides of thestab. Can't wait to get home and see if there is a clear spot that I can sizeup for this approach.--------Glenn ThomasN?????http://www.flyingwood.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
Re: Pietenpol-List: Cross Country in a Piet
Original Posted By: John Hofmann
Subject: Re: Pietenpol-List: Cross Country in a PietOscar go ahead and rent it actually you should buy it, there is just t much to be learned about life in it. "And if you really don't like it I'll give you another ride for free"In a message dated 6/23/2008 9:03:57 A.M. Eastern Daylight Time, taildrags(at)hotmail.com writes:--> Pietenpol-List message posted by: Oscar Zuniga Poth? Poth! That's just outside of San Antonio and not too goshawful far from Cannon Field, home of the Liaison Pilots Association.I've never seen "The Great Waldo Pepper" but I guess I should rent it one of these days...Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net**************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)________________________________________________________________________________
Subject: Re: Pietenpol-List: Cross Country in a PietOscar go ahead and rent it actually you should buy it, there is just t much to be learned about life in it. "And if you really don't like it I'll give you another ride for free"In a message dated 6/23/2008 9:03:57 A.M. Eastern Daylight Time, taildrags(at)hotmail.com writes:--> Pietenpol-List message posted by: Oscar Zuniga Poth? Poth! That's just outside of San Antonio and not too goshawful far from Cannon Field, home of the Liaison Pilots Association.I've never seen "The Great Waldo Pepper" but I guess I should rent it one of these days...Oscar ZunigaAir Camper NX41CCSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net**************Gas prices getting you down? Search AOL Autos for fuel-efficient used cars. (http://autos.aol.com/used?ncid=aolaut00050000000007)________________________________________________________________________________
RE: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: owner-pietenpol-list-server(at)matronics.com
Glenn,My Dad died on March 7th this year (a Friday night) and I started my Pietthat Saturday morning. My understanding wife left me alone all weekend as Iburied myself in the tail section. Between the tears and the memories, I wasable to build all six pieces in two very long days (I am fortunate to haveall his shop equipment).The method I used was to glue the frame work, add the gussets and let alldry overnight. The next day I added the stringers, but saw no tendency forthem to pull anything out of alignment. The spars appear to be plenty strongto resist any pull.Gary BootheCool, Ca.PietenpolWW Corvair ConversionTail done, working on fuselage(10 ribs down.)-----Original Message-----
Glenn,My Dad died on March 7th this year (a Friday night) and I started my Pietthat Saturday morning. My understanding wife left me alone all weekend as Iburied myself in the tail section. Between the tears and the memories, I wasable to build all six pieces in two very long days (I am fortunate to haveall his shop equipment).The method I used was to glue the frame work, add the gussets and let alldry overnight. The next day I added the stringers, but saw no tendency forthem to pull anything out of alignment. The spars appear to be plenty strongto resist any pull.Gary BootheCool, Ca.PietenpolWW Corvair ConversionTail done, working on fuselage(10 ribs down.)-----Original Message-----
RE: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: "Phillips, Jack"
RE: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: "Phillips, Jack"
rubber314chicken wrote:> > CDAWSON5854(at)shaw.ca wrote:> > 50lb??!! Spruce is officialy listed at 31 lb/cubic foot.> > Western Hemlock-29, Douglas Fir-34. Those are> > three of a fairly long list of useable woods.> > > > Clif> > > > I know, but I also wanted to add in for unknowns, variations in the wood, andT-88 used.> > and Jack, I'm seeing 100 as max level speed, so wouldn't 85 be resonable at soloweight? and I was expecting a bit of a drop at gross, but not down to 65ish.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: RE: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)Date: Mon, 23 Jun 2008 10:54:33 -0400
rubber314chicken wrote:> > CDAWSON5854(at)shaw.ca wrote:> > 50lb??!! Spruce is officialy listed at 31 lb/cubic foot.> > Western Hemlock-29, Douglas Fir-34. Those are> > three of a fairly long list of useable woods.> > > > Clif> > > > I know, but I also wanted to add in for unknowns, variations in the wood, andT-88 used.> > and Jack, I'm seeing 100 as max level speed, so wouldn't 85 be resonable at soloweight? and I was expecting a bit of a drop at gross, but not down to 65ish.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: RE: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)Date: Mon, 23 Jun 2008 10:54:33 -0400
Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: "Glenn Thomas"
Jack.Phillips(at)cardinal wrote:> 100 is pretty close to Vne for a Pietenpol. Mine has a 65 hp> Continental, and I see a cruise speed of about 65 mph solo, maybe 62 at> Gross. Top speed is about 72 indicated.> > You might get 100 mph indicated in cruise on a Pietenpol with a Pratt &> Whitney R-985 on it.> > There's a lot of drag inherent to the design that you simply can't> overcome.> > Jack> --that might explain the difference. I've read 104 for Vne (although it differsI'm sure) and with a corvair (110ish) in there I'm sure I could cruise a bit fasterthan 65, and still have a good fuel economy.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Jack.Phillips(at)cardinal wrote:> 100 is pretty close to Vne for a Pietenpol. Mine has a 65 hp> Continental, and I see a cruise speed of about 65 mph solo, maybe 62 at> Gross. Top speed is about 72 indicated.> > You might get 100 mph indicated in cruise on a Pietenpol with a Pratt &> Whitney R-985 on it.> > There's a lot of drag inherent to the design that you simply can't> overcome.> > Jack> --that might explain the difference. I've read 104 for Vne (although it differsI'm sure) and with a corvair (110ish) in there I'm sure I could cruise a bit fasterthan 65, and still have a good fuel economy.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Stab stringers (was Stanley Surform planers)
Original Posted By: Jeff Boatright
Thanks again,Gary that's a sad story with an amazing outcome. At least you had a good placeto focus on, and focus you did! These projects provide some great reflectivequiet time.Jack, I did mine pretty much the same way you did yours, shimming every part tothe appropriate plane prior to assembly. At this point the stabilizer is done,less the stringers. My worry was that as the stringers (from rear to front)curve over the main spar down to where they are glued to the tapered-down leadingedge, that small amount of spring to achieve a curve will result in a tendencyto bow the leading edge when the stab comes out of the jig with 8 stringerson one side, the bow most severe in the center. I may simply be overestimatingthe strength of the stringers here. They are stronger and less plyablein my hands than I thought they'd be. I will revisit tonight. Great pictures.Are they up on Chris Tracy's site? They do a really good job of showing theapproach you took.Thanks guys for all the help on this.--------Glenn ThomasN?????http://www.flyingwood.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 23 Jun 2008 11:09:41 -0400
Thanks again,Gary that's a sad story with an amazing outcome. At least you had a good placeto focus on, and focus you did! These projects provide some great reflectivequiet time.Jack, I did mine pretty much the same way you did yours, shimming every part tothe appropriate plane prior to assembly. At this point the stabilizer is done,less the stringers. My worry was that as the stringers (from rear to front)curve over the main spar down to where they are glued to the tapered-down leadingedge, that small amount of spring to achieve a curve will result in a tendencyto bow the leading edge when the stab comes out of the jig with 8 stringerson one side, the bow most severe in the center. I may simply be overestimatingthe strength of the stringers here. They are stronger and less plyablein my hands than I thought they'd be. I will revisit tonight. Great pictures.Are they up on Chris Tracy's site? They do a really good job of showing theapproach you took.Thanks guys for all the help on this.--------Glenn ThomasN?????http://www.flyingwood.comRead this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Mon, 23 Jun 2008 11:09:41 -0400