Brodhead Pietenpol Association

Original Posted By: "Lithuanian"
Wouldn't those expansion calculations be for if the piston was a solid piece? Nearly 7 thou expansion at a rather low temp seems excessive. Also, pistons don't generally expand evenly, which is why modern pistons are camground.Lastly, I did just find a 1931 reference to tolerances used in the manufactureof the Ford A, and it mentions .002 MAX.Now, I do know it's common to simply overbore to address issues like these, butif .002 is the manufacturers recommendation, and most chevy guys seem to indicateabout.004 is alright (for the MUCH higher horsepower and rpm ranges of v8small blocks) for street engines... something just doesn't add up. I think factoryspecs are about .003 max out the door. The .007 and up clearances seemto be used mostly by guys really hot rodding the engine, not producing 50 hp...Besides ring end gap, have you checked the fit of each piston in several locationsin the cylinder? Perhaps your block is tapered... Checked in several clockcodes to try and find out of round? Perhaps a six pack of beer and a googlesearch for a car club in your area to find someone with a bore gage you canplay around with to help determine exactly what is going on. Also a good micrometerto double check the pistons.Also, are you using forge or cast pistons? Cast need more clearance.I just hate over boring (honing) without really knowing, because that will shortenthe life of the engine.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ___Subject: Pietenpol-List: Pietenpol motor mount drop

Original Posted By: Michael Perez
I believe the 1932 drawings indicate 2 1/2 (degrees, not inches).Bill C.Read this topic online here:http://forums.matronics.com/viewtopic.p ... ______Date: Tue, 17 Jun 2014 07:47:40 -0700

Original Posted By: "Bill Church"
= Alt + 248 on the right number pad.Just so you know. :-)Clif----- Original Message -----

Original Posted By: "Lithuanian"
Yes Steve it will mess it up.Sent from my iPadJack Textor> On Jun 17, 2014, at 9:13 PM, Steven Dortch wrote:> > Gee Scott, Quit waffling and give me your opinion. I saw the warning on the Ceconite website about using an Iron. Then I watched a video where a guy uses a heatgun like an artist. Since I ain't no Douwe, I guess I will use an Iron. Will it screw up my wife's iron?> > Blue Skies,> Steve D> > >> On Tue, Jun 17, 2014 at 7:52 PM, AircamperN11MS wrote:ity.org>>> >> I need to say this very loudly. I'm screaming now. DO NOT use a heat gun. You will have many problems. There is know way to control the heat. It can warp your structure, burn holes in the fabric and just look awful. I'm sure I have missed a bunch of other stuff. Just use the iron and you will be happy. You worked too hard on the structure to rush in the end and have something you won't be proud of.>> >> Please use an iron. Respectfully,>> >> -------->> Scott Liefeld>> Flying N11MS since March 1972>> Steel Tube>> C-85-12>> Wire Wheels>> Brodhead in 1996>> >> >> >> >> Read this topic online here:>> >> http://forums.matronics.com/viewtopic.p ... 057#425057>> >> >> >> >> >> >> >> ==========>> br> -List" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List>> ==========>> MS ->> k">http://forums.matronics.com>> ==========>> e ->> -Matt Dralle, List Admin.>> t="_blank">http://www.matronics.com/contribution>> ==========> > > > -- > Blue Skies,> Steve D> > 3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D> ________________________________________________________________________________Subject: Pietenpol-List: Re: Pietenpol motor mount drop

Original Posted By: Gene Rambo
Bill Church wrote:> I believe the 1932 drawings indicate 2 1/2 (degrees, not inches).> > Bill C.thank you Bill for helpRead this topic online here:http://forums.matronics.com/viewtopic.p ... __________

Original Posted By: Michael Perez
Those infra-red "pistol" type thermometers are relatively cheap ($30?) and give instantaneous, accurate temp. Using that, I've found that marks on the irons I have used are worthless. Keep the IR by your side and check it often while working. You'll be amazed by the fluctuations, but you won't burn any holes. GeneOn Jun 18, 2014, at 12:03 AM, Ken Bickers wrote:> Steve (and Scott), I'm not a big fan of the candy thermometer approach to calibrating irons. I used one of those on my first attempt at shrinking fabric. I first calibrated the candy thermometer by placing it in boiling water. It was pretty close to the right number. But you can only calibrate the thermometer at that one temperature, which means when you use it to calibrate the iron it can be off a lot at temperatures that matter. In my case, the first shrink at 250 degrees was just fine. So was the second shrink at 300, or so I thought. On the third and final shrink at 350 degrees, the iron went right through the ceconite. I threw the candy thermometer away, tore off the remaining fabric, and started that piece over. Fortunately it was one of the small pieces. I then bought one of those little wheel style mechanical wire thermometers. It worked just fine. I'd concur with Scott about the extension cord. I had to use a longer cord when I covered my wings. I found that the temperatures on the iron were off by quite a bit when I used the second cord. Recalibrating from time to time is a good idea anyway, but especially so if you change cords. One last thing. You can find lots of perfectly good old-style used irons at flea markets. Or do what I did. Buy your wife a fancy new one. Take the old one out to the hangar. Ken > > > On Tue, Jun 17, 2014 at 9:43 PM, AircamperN11MS wrote:ity.org>>> >> Yes I got a little excited. Then I saw the other more tactful replies. Your wife's iron may work. The trouble with most new irons are attorneys. Some won't get hot enough and others have a built in timer that shuts it off after a period of time. Get a candy thermometer to calibrate it. Also use the same extension cord every time so the temp are repeatable. Just mark the dial with marks you understand. Like maybe 1, 2 and 3 for the different settings you need. You may need to try a couple of different irons to find one you like.>> I'm glad you laughed rather than cry after reading my rant.>> >> Have fun. Covering was the best part most fun for me.>> >> -------->> Scott Liefeld>> Flying N11MS since March 1972>> Steel Tube>> C-85-12>> Wire Wheels>> Brodhead in 1996>> >> >> >> >> Read this topic online here:>> >> http://forums.matronics.com/viewtopic.p ... 067#425067>> >> >> >> >> >> >> >> ==========>> br> -List" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List>> ==========>> MS ->> k">http://forums.matronics.com>> ==========>> e ->> -Matt Dralle, List Admin.>> t="_blank">http://www.matronics.com/contribution>> ==========> > > ============================================================================================================================================> ________________________________________________________________________________Date: Wed, 18 Jun 2014 04:21:32 -0700

Original Posted By: Michael Perez