Brodhead Pietenpol Association

Original Posted By: Isablcorky(at)aol.com
Subject: Pietenpol-List: Throttle quadrant plansHello to all in the group:Does anyone have plans for a throttle quadrant like these? I don't want/need anything fancy. I can build one from scratch from these pictures, but,I don't know how long to make the "throw & pivot points". These two examples seem to be very different in their geometry. I don't know what would be bestwith a continental 75 engine/carburetor. This is just a shot in the dark, but I thought I would ask anyhow.Thanks in advance, and happy building/flying,Max DavisArlington, TX.NX101XW (We now have an official N number, very exciting!)(http://mykitplane.com/Planes/photoDispl ... otoID=2291) ________________________________________________________________________________

Original Posted By: "Ed G."
Subject: Re: Pietenpol-List: Throttle quadrant plansMax,I remember a comment by my DAR. He said to make the throw on the quad larger than the needed movement of the throttle arm.Corky who can't remember too much lately________________________________________________________________________________

Original Posted By: "Phillips, Jack"
Good to see you back on the list Gary...It has been a long time..I made my ribs the same way, let the top gussets cure overnight then pulled the rib out of the jig and put the gussetts on the flip side and do the first side of a new rib each day. They came out great and there is no detectable difference between any of them.I lined my rib jig with plastic grocery bags cut down each side..They protected the rib jig and most of the plastic would peel off the T-88..the rest I just sanded off .. I would lay up a rib then go work on some other part of my Piet...If you're patient it works great...Ed G.>From: Gary W Meadows >Reply-To: pietenpol-list(at)matronics.com>To: pietenpol-list(at)matronics.com>Subject: Pietenpol-List: Rib-testing>Date: Mon, 28 Feb 2005 06:41:56 -0800 (PST)>>Hey guys,>> It's been a while since I posted, but I just wanted to exit lurking mode >and chime in on my highly unscientific version of rib-testing. I made up a >test rib, and let it cure for a few days. Next, I propped the rib up >between the workbench and my step stool. I then lifted myself up on my >hands holding onto the bench and ladder and placed one foot onto the rib. I >gradually let the rib take my weight until I had probably 70 - 80% of my >weight on that rib!! Now, I'm about 230 on the hoof, so I figure that rib >was holding up a ballpark of between 160 to 185 pounds!!! I was amazed at >how strong those things are!! Anyway, I then did the math - 30 ribs * 170# >and came up with around 5000# - good enough for me!! Even if I guessed way >wrong, that rib was still holding an incredible amount of weight when >compared to how much IT weighs. Kinda like an ant!!>> To do a more accurate test, I guess I could have place the rib on a board >on a bathroom scale, but all it was for was to bolster my confidence in the >rib design, material and my own building technique and it worked!!!>> By the way, I made one rib per night and let the one side cure, then the >next day, glued on the opposite side gussetts and made a new on in the jig. >It was slow, but I was working tail feathers too, so it was fine. I also >had trouble with the ribs not holding their shape out of the jig. I suspect >my capstrip bending wasn't thourough enough.>> Now, I'll go back into stealth mode and get back to work, waiting to get >home and into the garage to get back to work on the Piet!!>> Gary Meadows> Spring, TX________________________________________________________________________________Subject: RE: Pietenpol-List: Throttle quadrant plansDate: Mon, 28 Feb 2005 10:10:07 -0800

Original Posted By: BARNSTMR(at)aol.com
I obviously didn't make the quadrant that's on 41CC (Corky did), but I've made others. I found that if I played around at the workbench with some junk materials like plywood and scrap metal to make a mock-up, it's easier and more satisfying to work out the stroke, travel, and proportions of the lever than if you sat down and worked out the trigonometry or drew it up in CAD. If you don't like the throw or travel, you just punch a new pivot point and try that, or cut out a longer handle and try that. Grab whatever is handy and start experimenting.I have a box of miscellaneous hardware that I've picked up from jobsites and parking lots over many years, and I'm sure all of you do too- so I work out of that and my scrap bin to do test fits of things, then fabricate the final item using "real" stuff.We don't need no stinkin' plans (and I'm an engineer!!)Oscar ZunigaSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________Date: Tue, 01 Mar 2005 13:07:28 -0500

Original Posted By: "Phillips, Jack"
Subject: Re: Pietenpol-List:fuel pressurePieters: I have a J3 cub gas tank in the front of my piet with a 75 hp cont engine and have been running the engine but it craps out when I add throttle. The books say you should have 1/2 lbs of pressure (19 inches) of head.I can't see how a j3 cub has ever had this much. With just two gal of gas I have about 6 inches when sitting with the tail wheel down and my motor cycle wheels on. I am going to put a 90 degree tube in my gas cap to get some prop blast and wonder if this will do any good. I have had three different carbs on and they all act the same. Still looking for a counter clockwise tach. Has anyone used one of the new electronic tach on a mag that they really like. Ken Conrad, Long Grove Iowa________________________________________________________________________________Subject: RE: Pietenpol-List:fuel pressureDate: Tue, 1 Mar 2005 13:39:59 -0800

Original Posted By: "walt evans"