Pietenpol-List: engine mount jig

matronics · Post by **matronics** » Tue Nov 07, 2006 9:16 pm

Original Posted By: KMHeide
I forgot to mention how I worked out the jig for the VW engine mount in my "Flying Squirrel" (not flying yet though). It was actually very enjoyable to build the jig because I knew goofs wouldn't matter much; I could re-drill or re-cut anything since it was just for the jig. It was a nice Saturday job to build the jig.I started out with a piece of scrap sheet metal (ductwork) measured and cut to the exact shape of the firewall, then mounted it to a piece of heavy plywood with some 2x4 back framing. Scrounge hardware mounted the sheet metal to the plywood, then I carefully located where the engine mount points would be. I had the four "spool" pieces that would form the four corners of the mount and I bolted those to the firewall jig with hardware store bolts.I mounted this firewall jig to a 2x4 frame that also supported the engine with some wood framing, in its desired relationship to the firewall. I also put this frame on casters to make it easy to move around, but that's just gravy. By the way, pictures of this are the first few at http://www.flysquirrel.net/engine/engine.html and the pictures will tell the whole story.I took this to my friend Jeff Sterling, who then welded the engine mount tubing together and it didn't matter if the plywood or 2x4's charred... it's all throwaway anyway. It turned out very nice. Actually, I was so happy with the sheet metal firewall that I wouldn't mind using it for a "real" airplane sometime and the cost was great (free).Oscar ZunigaSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net_________________________________________________________________Get FREE company branded e-mail accounts and business Web site from Microsoft Office Live ________________________________________________________________________________Date: Tue, 7 Nov 2006 19:54:22 -0800 (PST)

matronics · Post by **matronics** » Tue Nov 07, 2006 11:32 pm

Original Posted By: KMHeide

matronics · Post by **matronics** » Wed Nov 08, 2006 2:12 am

Original Posted By: Matt Dralle

matronics · Post by **matronics** » Wed Nov 08, 2006 8:07 am

Original Posted By: "Rick Holland"

matronics · Post by **matronics** » Wed Nov 08, 2006 11:01 am

Original Posted By: Matt Dralle
Yes, the A65 engine mount in 41CC is built per the Pietenpol plans with a bit of offset. If you have the supplemental engine mount drawing from Pietenpol, you'll note slight offset for it.Oscar ZunigaSan Antonio, TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net_________________________________________________________________Get FREE company branded e-mail accounts and business Web site from Microsoft Office Live ________________________________________________________________________________Date: Wed, 8 Nov 2006 21:28:06 -0800

matronics · Post by **matronics** » Wed Nov 08, 2006 11:30 pm

Original Posted By: "Oscar Zuniga"
Subject: Re: Pietenpol-List: Motor mount questionIn a message dated 11/8/2006 8:10:20 AM Central Standard Time, at7000ft(at)gmail.com writes:Question is has anyone actually flow a Piet with the CG anywhere near 9.5" aft of LE? Rick,Bernard called out to maintain the C of G between 1/4 to 1/3 of the airfoil, which amounts to between 15" and 20" behind the Leading Edge. I seriously doubt that anyone anywhere in history of the Pietenpol has been able to have flown the plane with the CG that far forward.Chuck G.NX770CG________________________________________________________________________________

Brodhead Pietenpol Association