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Aerobatics ServerACRO E-mail Archive Thread: [Acro] Re: [Fwd: Engine mounts][International Aerobatic Club] [Articles etc] [Communications] [Contest and Patch Information] [Aviation Organizations] [Other Aerobatics Info] [Aerobatics Images] [Other Aerobatics Links] [Other Aviation Info (including weather)] [Search ACRO Website]Disclaimer: These aerobatics pages are developed by individual IAC members and do not represent official IAC policy or opinion. |
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Thread: [Acro] Re: [Fwd: Engine mounts]
Message: [Acro] Re: [Fwd: Engine mounts]
Follow-Up To: ACRO Email list (for List Members only)
From: "Paul B. Stambaugh" <pstambau at yahoo.com>
Date: Fri, 27 Jun 2003 13:09:52 UTC
Contact Herber aircraft for the mounts. Good service and good prices. http://www.herberaircraft.com/start.htm P --- DSowder at aol.com wrote: > In a message dated 6/25/2003 8:43:27 PM Pacific > Standard Time, > avian at xtra.co.nz writes: > > > > any thoughts on the best replacement engine mounts > for our stock Pitts > > S2S. > > > > Well, I don't know if this is the best info, but > I'll recount the experience > I had one year ago with my S-2B, which I assume uses > same mounts as S-2S. Same > engine, anyway. I bought my B as a wreck in '95. > When re-installing the > engine in '97, I found that the old mounts were Lord > J7401-2, evidently OEM with > 707 hours on them (cure date stamped was '85, my B > is an '86). Pretty beat. I > couldn't find any of these. Aviat now uses Barry > mounts and apparently has a > proprietary deal with Barry. I bought Barry mounts > and spacer tubes from Aviat > (this in '97, remember). The Barry spacer tubes are > about 1/16" longer, as I > recall. > > OK...June of '02, the Barry mounts looking pretty > flat with 362 hours on > them. Called Aviat...none in stock, but they might > be placing an order in a couple > of weeks. This wasn't so good, as I had a contest > coming up RSN. No other > supply house carried the Barrys...again, I think > they're proprietary with Aviat. > No Lord J7401-2's to be found either. Another reader > of this list suggested I > call Lord and discuss Lord J3049-39's. Might'a been > Dale (?) at Lord, very > accomodating, told me that they developed this mount > for the likes of Sean > Tucker, who might abuse his mounts even worse than I > do. They are (were?) official > engine mount of the Northern Light team of Extra > 300's, too. Don't those folks > fly jets now? Anyway... > > Well, if they're good enough for Sean, they're good > enough for me, so I > ordered a set and had 'em in a week or so. A couple > of cautionary notes: they're > not "approved" for the B, but as mine is > Experimental anyway, I figgered I'd > experiment some more. Who'd know, anyway?? The hole > thru the steel plate part of > the doughnut is too small, so I chucked 'em up in a > lathe and put a 1/2" drill > in the tailstock and bored them out. These new > mounts are larger O.D., need > to check clearance to engine mount tubes closely, > might need to shim them out > 1/16" (a sillymeter and a half or so); I didn't need > to. And it's necessary to > relieve the top rear engine baffle for the larger > O.D., so have those tin > snips handy. Lastly, I used my old Lord spacer > tubes. > > A year and about 100 hours later, the new mounts > still look perfect, no sag, > engine seems smoother than ever, I'm completely > happy with them. Lord has a > web site: <A > HREF="http://www.lordmpd.com/">http://www.lordmpd.com/http://sbc.yahoo.com
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