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jhstarn(at)verizon.net
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 Posted: Sat Jun 02, 2007 5:58 pm Post subject: Engine sag- was Spinner to cowl clearance - How close is to |
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Motor mount sag ? ? I was told that there would be sag and to leave more of an openning at the bottom. So I set it with about 5/16 at the top (fingertip) and 3/8 at the top (thumbnail) at the bottom. IO540 with 4 bladed M/T ptop. After six years & hundreds of flights I'm still awaiting the morning that they even out during preflight. The 3/8" at the bottom leaves just enough for replacing the lower cowl without forcing the issue. I have the shim washers required ready as soon as it sags.....BUT I may have to get new shim washers, these are begining to rust...8*) KABONG
| Quote: | From: Kevin Horton <khorton01(at)rogers.com>
Date: 2007/06/02 Sat AM 10:50:23 CDT
To: rv-list(at)matronics.com
Subject: Re: Engine sag- was Spinner to cowl clearance - How close is too close
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| Quote: |
On 2 Jun 2007, at 01:28, Fiveonepw(at)aol.com wrote:
> In a message dated 6/1/2007 10:31:59 PM Central Daylight Time,
> bobbyhester(at)charter.net writes:
> I set mine that high and after 65 hrs it is still at the same
> height, too high. I would set it flush with the top of the cowl.
> >>>
>
> This is a curiousity I've seen hashed over here and wondered about
> for a long time- how about a "do not archive" poll of builders who
> have actually seen engine sag or not, with perhaps some added info
> about engine type, c/s or f/p, hours, flying style etc.?
>
> Mark Phillips- O-320 RV-6A, f/p Catto 3-blade, very little high-G
> stuff, & no sag after 415 hrs with Van's standard mounts...
Van may not have always sold the same engine mounts, so the mount
manufacturer and part number are also relevant info.
Kevin Horton RV-8 (finishing kit)
Ottawa, Canada
http://www.kilohotel.com/rv8
do not archive
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kcflyrv(at)comcast.net
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| Posted: Sat Jun 02, 2007 7:25 pm Post subject: Engine sag- was Spinner to cowl clearance - How close is to |
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My two bits is to run the engine for a couple of times before mounting the
cowl to the fuselage. This is what I did 5 years and 620 hours ago. This
provides enough shake-down to settle in it's permanent spot.
Never had any engine sag...
Ken Cantrell
Ph: 209-747-2903
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