Brodhead Pietenpol Association

Original Posted By: Ted Brousseau
Hi John Greenlee,I'm just slightly ahead of you in covering but have yet to complete a propeller. I read your opening statement on your last letter (dated 30 April 97 ) with interest. You said you" laminated oak for the prop.", What kind of oak did you use . I wasn't aware that oak could be used for props. Thought the spaces between the fiberous rings were too wide and contained too much soft(pith) fiber in between??? Soon I will be attempting my third propeller. The first, made of rock maple cost about $45.00 and was a disaster. The second about 5 years later (a great Blank) was used as a practice blank on the prop. duplicating machine I made . The Maple increased in price to $145.00 for the same amount of board feet and the duplicating machine cost about $200.00 to build. It seems hardwood prices are skyrocketing. I'll have to get busy on one soon though. I will be closing the fuselage starting this weekend everything else is covered. I have the dope on hand and plan to start painting within 2 weeks.Regards,Domenico Bellissimo________________________________________________________________________________

Original Posted By: JGreenlee(at)aol.com
>Well, you are more studied than I am on this but, let me tell you, there isnothing soft about any of that oak. What I used is "red oak" which, fromwhat I have read, is a generic name for a number of species of oak graded bycolor. I got the idea from calling on the owner of an FBO a few years ago. He had aprop hanging on his wall that came from a 1913 Curtis. It was Oak and ascimitar shape. Darn, it was neat! Anyway, this one came out reasonablywell.I built one of those duplicating machines. I had a couple of problems usingit. A longer prop, like for an A, tended to want to shift in its mount whenpressure was applied at a long moment such as at the tip. I solved thissomewhat on the second prop by glueing some 100 grit sandpaper down to thetable in the hub area and then tightened the hub down against the sandpaper. A better solution I saw in a photograph recently would be to extend theblank a couple of inches at each tip and bolt the tip with spacers directlyto the table. The tips could then be cut down and shaped by hand, last.The othef problem was trying to cut too close to finished with the machine. My first prop got too thin and will likely just become a handsome clock. Onthe second prop, I made a concerted effort to leave 1/8 or 1/4" material onthe prop to finish by hand. This worked out better. In short, I think the duplicator is probably better suited to cut shorterprops like VW designs and more conventional props. The long semi-scimitarprop is more difficult with the machine. If I make a third prop for the A, Iam considering doing it all by hand. I like the looks of the props GaryPrice made for his ship. The last one was hickory by the way. He hasexperimented with a longer prop with less pitch. About 84" long, I think.Hope to hear from you gentlemen, soon.John________________________________________________________________________________

Original Posted By: Gary Gower
John Wrote:>John, I built my table 8 feet long and a sliding center hub section which could be fixed into position with furniture inserts. This allows me to make one prop end at a time, up to 72inches per end. All you have to do is switch ends and keep your center lines in true position. As far as the prop shifting in it's mount I use the method you described as a a better solution, by extending the prop. blank and bolting it down to the table surface.Ii'm going to have a look at some red oak and judge it's suitability. My experience with oak is limited to furniture making but from what I can remember it splinters very easily.Cutting too close to the finish surface is also what I experienced with my practice blank as well as the set up. I had set up the blank too high in the first place and did the same when I flipped to the other side. Consequently the finish product was too thin. I know better now. I will also purchase a 3HP router to better perform the cuts, I found a 1 HP is too week and causes chatter. Other than these problems I think I'll do much better next time.Regards.Domenico Bellissimo________________________________________________________________________________

Original Posted By: "Joe Krzes"
Hi again- I need to replace the prop on my o200 Powered Aircamper.I am curently using a McCauly 70x48 as the CG is a bit far forward I wouldlike to replace it witha wooden prop-Any help regarding Size and where I could purchase one fromapriciatedas info and supliers are rare in South Africa.Regards Doug ReeveJohannesburg________________________________________________________________________________

Original Posted By: "walter evans"
Del, Send an empty email to AIRSOOB-subscribe(at)lists.kz and you'll be signed up.Joe>From: del magsam >Reply-To: pietenpol-list(at)matronics.com>To: piet aircamper >Subject: Pietenpol-List: soob>Date: Tue, 20 Jun 2000 11:29:02 -0700 (PDT)>>>Does anybody know of a subaru discussion group? A>friend of mine is doing a kitfox and wants to put a>turbo'd soob on it.>>del>piet builder>>________________________________________________________________________________

Original Posted By:
In one of the " Flying and glider manuals" ( forget which one , got themfrom Aircraft Spruce) in the back it explains how the pitch isdetermined. With a diagram it shows how it is figured out. Veryinteresting.walt---------------------------------------------------------- Original Message -----

Original Posted By: nle97(at)juno.com
Subject: Re: Pietenpol-List: Plywood Gussets

Original Posted By: owner-pietenpol-list-server(at)matronics.com
I believe that would be the pitchCarl-----Original Message-----

Original Posted By: "Carl Loar"@matronics.com
Subject: Pietenpol-List: PropellerMcCauley metal prop 7148. I know the 71 is the diameter in inches. What is the meaning of the 48?????________________________________________________________________________________

Original Posted By: Gene.Tomblin(at)matronics.com

Original Posted By: owner-pietenpol-list-server(at)matronics.com
Jim,For either show, or actual use, you could do either =BE=94 or =BD=94 laminations. =BD=94or smaller may look better. Boards of any grain pattern will work. Attachedimage is of #4, for my Piet, and is =BD=94 laminations of poplar.Gary BootheNX308MB

Original Posted By: "jimbir"
Well.not really free, but it got your attention! I know little or nothing about aluminum struts, but a local EAA guy has 10or 11 pieces of 12' streamline material that looks to be the right size fora Piet. He sez he'll make a "smokin' deal"!Contact Ken Schwartz: ken.schwartz(at)att.net. Feel free to use my name as areference, but avoid using expletives, as Ken & I are friends, and it mightaffect the level of your smokin' deal. .and, PLEASE, don't ask me any questions, cuz' I don't know!Gary BootheNX308MB________________________________________________________________________________Subject: Pietenpol-List: Re: Propeller

Original Posted By: Gary Boothe
Thanks Gary. Beautiful prop. There were three question marks ( ?" ) in you post.Were these supposed to be links to some information?Jim Birke--------Thanks, Jim BirkeNiagara Frontier VintageAircraft Group Assisting The Niagara Aerospace MuseumRead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Re: Propeller

Original Posted By: Andre Abreu
Those were not put there by me. I think Matt automatically adds those to all myposts, meaning you should question everything I say!GarySent from my iPhone> On Sep 23, 2013, at 4:38 PM, "jimbir" wrote:> > > Thanks Gary. Beautiful prop. There were three question marks ( ?" ) in you post.Were these supposed to be links to some information?> > Jim Birke> > --------> Thanks, Jim Birke> Niagara Frontier Vintage> Aircraft Group Assisting The > Niagara Aerospace Museum> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 104#409104> > > > > > > > > > ________________________________________________________________________________Date: Mon, 23 Sep 2013 17:47:02 -0700 (PDT)

Original Posted By: "Gary Boothe"
Subject: Re: Pietenpol-List: PropellerSent from my iPadOn Sep 23, 2013, at 2:57 PM, "Jim Birke" > wrote:We are building an air camper for display only and are thinking of building ourown propeller. It would probably be made of clear white pine. Has anyone posteda drawing showing the shape of the laminations required to to lay on up or,is there a site that I can go to to find this information?Thanks. Jim BirkeNiagara Frontier Vintage Aircraft GroupNiagara Falls NY.________________________________________________________________________________

Original Posted By: owner-pietenpol-list-server(at)matronics.com
BTW, Jim...If you go to all the work of carving a prop, why not make afor-reals one? With Dan Helsper's prop carving guide (helspersew(at)aol.com),and a little math, Bob's yer uncle! Clear white pine is perfectly suitable,though you may wish to make the laminations 3/8 - 1/2". Gary BootheNX308MB-----Original Message-----

Original Posted By:> owner-pietenpol-list-server(at)matronics.com [mailto:owner-pietenpol-li
Gary,How fast do you carve those props? Is your plane back together already? Thanks,Ray KrauseSent from my iPad> On Sep 23, 2013, at 2:01 PM, "Gary Boothe" wrote:> > Jim,> > For either show, or actual use, you could do either =C2=BE=9D or =C2=BD=9D laminations. =C2=BD=9D or smaller may look better. Boards of any grain pattern will work. Attached image is of #4, for my Piet, and is =C2=BD=9D laminations of poplar.> > Gary Boothe> NX308MB>

Original Posted By: owner-pietenpol-list-server(at)matronics.com
Takes 30 or 40 hrs. Wing has primer. Tail wheel change is started. Still going to be a month or two. Maybe I=99ll take some vaca time and speed it up! I sure miss the flying. Read Stick & Rudderjust what I needed!!Gary BootheNX308MB

Original Posted By: danhelsper(at)aol.com
Douwe,I've had an interest in something like that too. Check out www.cyclekarts.com. Those guys use horse buggy seat springs that are available online. Steel, but should be fairly lightweight.Don EmchNX899DERead this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Re: Pietenpol-List: Propeller

Original Posted By: Ray Krause
He is fast.....very fast!-----Original Message-----

Original Posted By: Jim Boyer