Pietenpol-List: Pietenpol 912

An archive of the Matronics Pietenpol Listserve.
Locked
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Pietenpol-List: Pietenpol 912

Post by matronics »

Original Posted By: "Ed G."
Does anybody have details of a pietenpol rotax 912 engine mount?Best wishesGlenRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

> Pietenpol-List: Pietenpol 912

Post by matronics »

Original Posted By:> glen(at)ballooning.fsnet.co.uk
That will have to be a looooooong motor mount. But=2C I belive it uses a bed style mount so maybe the Corvair mount cound be modified to work. That's what I did for my Franklin bed mount and it worked out great. Ed G.> Subject: Pietenpol-List: Pietenpol 912
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Pietenpol-List: Re: Seat back angle

Post by matronics »

Original Posted By: "Will42"
I've now got my "mockpit" to the stage that I can sit in it, and one thing I feelI need to do is change the angle of the seat back. It is too vertical for me(maybe in part because I'm 6'-2").I know that this is an alteration that many have done already, so I know it canbe done. What I'm wondering is, for those that have made this change, did youmove the bottom edge of the seatback forward, or did you move the top edge rearward?And how much did you move it? And did you change the truss sides to suitthe new angle? I think that moving the top edge rearward makes the most sense,room-wise, since it would not impact on the available leg room (which is importantfor me) - However, it would shift the CG of the pilot rearward a bit,which is not a good thing.I hate making changes, but I do need to fit in my plane.Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Re: Seat back angle
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Post by matronics »

Original Posted By: "Jack Phillips"
You might take a look at the tube fuselage drawing; the rear seat is layed backa whopping 4" over the wood frame. Could never figure why unless for a tall guy.Just remember that laying the seat back not only changes the CG, it also makefor less vision over the side and forward and for me it is a very uncomfortableposition; I don't like being buried in a cockpit. Do the mock-up and decidewhat suits you.WillRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

RE: Pietenpol-List: Seat back angle

Post by matronics »

Original Posted By: owner-pietenpol-list-server(at)matronics.com
Bill,I added 2" of rearward rake to the seatback by incorporating a wedge ofstyrofoam behind the temperfoam. The wedge is 2" thick at the bottom,tapering to a point at each side at the top of the seat. If I had it to doover, (I did not build a mockpit -probably should have), I would move thetop of the seat back about 2", leaving the bottom where it is. I wouldchange the uprights and diagonals to fit this new configuration.The reason to shift the top back, rather than the bottom forward, is that ifyou are 6'2" as I am, your legs are probably pretty long. I had to enlargethe cutouts in the front seat bulkhead for my shins. I regret having lost2" of legroom to get the seat angle to a comfortable level.Jack PhillipsNX899JP-----Original Message-----
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Pietenpol-List: Seat back angle

Post by matronics »

Original Posted By: Darrel Jones
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

RE: Pietenpol-List: My Pietenpol build is just beginning

Post by matronics »

Original Posted By: owner-pietenpol-list-server(at)matronics.com
Hi Jerry,Welcome to the world of Pietnpols, and Pietenpol People!The .032" (that's the closest you'll find a standard thickness) is plentyfor the contol horns. They look more complicated to make than they are.Once you form them to the curved shape and weld them together, they are verystrong and rigid, and very light. Some people have used 1/8" thick solidsteel horns, which are easier to make, but are not as "elegant" and weigh aton compared to the plans-built version. You'll find edge welding the thinsteel is very easy - just touch it with the torch and the edges sort of flowtogether, with very little welding rod (if any) required.As for brakes on spoked wheels, marginally effective is about the best youcan hope for unless you use a really big disc such as you'd find on aHarley-Davidson. Airplanes quit using big wheels about the same time theystarted using brakes for that reason - it takes a lot of braking to applyenough torque to stop a big wheel. If it will hold it for the runup, whatmore do you need? I've got standard Cleveland brakes with an 8" diameterdisc and they work adequately, but no more than just adequately.Enjoy the process!Jack PhillipsNX899JPRaleigh, NC-----Original Message-----
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Pietenpol-List: My Pietenpol build is just beginning

Post by matronics »

Original Posted By: Dan Yocum
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Re: Pietenpol-List: 80th Anniversary Fly-in

Post by matronics »

Original Posted By: Dan Yocum
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

Re: Pietenpol-List: My Pietenpol build is just beginning

Post by matronics »

Original Posted By: helspersew(at)aol.com
matronics
Posts: 81779
Joined: Sat Mar 18, 2017 8:29 am

RE: Pietenpol-List: Pietenpol 912

Post by matronics »

Original Posted By: "Bill Church"
> To: pietenpol-list(at)matronics.com> net.co.uk>> > Does anybody have details of a pietenpol rotax 912 engine mount?> > Best wishes> Glen> > > > > Read this topic online here:> > http://forums.matronics.com/viewtopic.p ... 104#246104> > > > > > > ============================================> > > _________________________________________________________________Hotmail=AE has ever-growing storage! Don=92t worry about storage limits.http://windowslive.com/Tutorial/Hotmail ... ___Subject: RE: Pietenpol-List: Pietenpol 912Date: Sun, 31 May 2009 11:26:55 -0400
Locked