rv10rob(at)gmail.com
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 Posted: Wed May 05, 2010 8:27 am Post subject: Alignment of engine mount holes seem off by quite a bit. |
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Before tightening any nuts, a few of my holes were perfect, but a couple others seemed way off (the pilot hole was barely within the engine mount hole). I then tightened the nuts on the holes that did align. That pulled the mount tight against the firewall, which also made the holes closer. At that point, they were all within 1/8" of center.
Note I drilled my first hole without the mount on, then had my wife hold the mount while I drilled the second hole. From there, the mount holds itself 
-Rob
On Wed, May 5, 2010 at 7:38 AM, Don McDonald <building_partner(at)yahoo.com (building_partner(at)yahoo.com)> wrote:
[quote] It's all about quality control.... if they have the proper jigs, and they weld in the appropriate steps, it should be within pretty close tolerances. Van's should make up an acceptance jig to ck the motor mounts prior to shipping.... depends on whether they're doing them, or they out-source them. If it's out by as much as you say, I'd send it back in the hopes that the next one is better.
Don McDonald
--- On Wed, 5/5/10, Danny Riggs <jdriggs49(at)msn.com (jdriggs49(at)msn.com)> wrote:
[quote]
From: Danny Riggs <jdriggs49(at)msn.com (jdriggs49(at)msn.com)>
Subject: RE: Alignment of engine mount holes seem off by quite a bit.
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Date: Wednesday, May 5, 2010, 6:21 AM
Apparently this is pretty typical. I was complaining to my A&P friend and he said that even on the certified planes that this was the usual (mis)fit. I was trying to do the mounting by myself but finally gave up and got some help. That made it somewhat easier.
From: lewgall(at)charter.net (lewgall(at)charter.net)
To: rv10-list(at)matronics.com (rv10-list(at)matronics.com)
Subject: Re: Alignment of engine mount holes seem off by quite a bit.
Date: Wed, 5 May 2010 08:13:09 -0400
Hey Matthew,
Ours was a very close fit. Three holes perfect, the last hole with minimal persuasion. I think I'd give Van's a call first before chasing the holes and get their opinion about bending the mount to fit the holes.
Later, - Lew
[quote] ---
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