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vernon.franklin(at)gmail.
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 Posted: Thu Apr 18, 2013 3:15 pm Post subject: Engine Mount |
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I am starting to drill and attach the engine mount to the firewall.
I noticed that after I got the first AN6 attach bolt holding the engine mount in place, the other guide holes in the firewall were visible, but not perfectly centered in the engine mount bolt holes.
Is this something I should be concerned about? Did anyone else experience this? Should I drill away?
--
Vernon Franklin
[quote][b]
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Bob Turner
Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA
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| Posted: Thu Apr 18, 2013 3:33 pm Post subject: Re: Engine Mount |
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Mine too. In fact, I had to pull on the mount so I could see all of the hole in the firewall thru the mount.
Van's advice was to use the mount as a guide, and just go ahead and drill, as long as the resulting final holes were going to be round.
Seemed to work okay, the mount is a good guide so the drill doesn't wander in the off-center hole in the firewall.
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Bob Turner
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rv10flyer
Joined: 25 Aug 2009
Posts: 364
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| Posted: Thu Apr 18, 2013 8:04 pm Post subject: Re: Engine Mount |
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Same on mine...you are getting close!
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Wayne G. |
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larkrv10(at)gmail.com
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| Posted: Thu Apr 18, 2013 8:40 pm Post subject: Engine Mount |
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I'm far from an expert but would a reamer not be a good way to open up the final hole size? I use one every chance I get.
Rick
#40956
On Thu, Apr 18, 2013 at 7:33 PM, Bob Turner <bobturner(at)alum.rpi.edu (bobturner(at)alum.rpi.edu)> wrote:
[quote] --> RV10-List message posted by: "Bob Turner" <bobturner(at)alum.rpi.edu (bobturner(at)alum.rpi.edu)>
Mine too. In fact, I had to pull on the mount so I could see all of the hole in the firewall thru the mount.
Van's advice was to use the mount as a guide, and just go ahead and drill, as long as the resulting final holes were going to be round.
Seemed to work okay, the mount is a good guide so the drill doesn't wander in the off-center hole in the firewall.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=398917#398917
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[b]
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Kellym
Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ
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| Posted: Thu Apr 18, 2013 9:09 pm Post subject: Engine Mount |
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You are enlarging from around a 3/16 to something like 3/8. You need a
sharp drill bit with good cutting oil. I found liquid Boelube works
great for that purpose.
On 4/18/2013 9:40 PM, Rick Lark wrote:
| Quote: | I'm far from an expert but would a reamer not be a good way to open up
the final hole size? I use one every chance I get.
Rick
#40956
On Thu, Apr 18, 2013 at 7:33 PM, Bob Turner <bobturner(at)alum.rpi.edu
<mailto:bobturner(at)alum.rpi.edu>> wrote:
<bobturner(at)alum.rpi.edu <mailto:bobturner(at)alum.rpi.edu>>
Mine too. In fact, I had to pull on the mount so I could see all
of the hole in the firewall thru the mount.
Van's advice was to use the mount as a guide, and just go ahead
and drill, as long as the resulting final holes were going to be
round.
Seemed to work okay, the mount is a good guide so the drill
doesn't wander in the off-center hole in the firewall.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=398917#398917
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arget="_blank">http://www.matronics.com/Navigator?RV10-List
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http://forums.matronics.com
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le, List Admin.
="_blank">http://www.matronics.com/contribution
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Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
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carl.froehlich(at)verizon
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| Posted: Fri Apr 19, 2013 4:54 am Post subject: Engine Mount |
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On approach that worked well for me. Drill out the firewall holes to ¼”. Use ¼” bolts with a sleeve of 3/8” nylon tubing to bolt up the engine mount (the tubing centers the bolts on the engine mount weldments). Put a bolt into each weldment. Once the engine mount is bolted to the firewall (some persuasion may be needed), take out one bolt at a time and drill through the engine mount to final size. Insert a full size bolt in that hole and repeat for the other holes.
Simple and works every time.
Carl
From: owner-rv10-list-server(at)matronics.com [mailto:owner-rv10-list-server(at)matronics.com] On Behalf Of Rick Lark
Sent: Friday, April 19, 2013 12:40 AM
To: rv10-list(at)matronics.com
Subject: Re: Re: Engine Mount
I'm far from an expert but would a reamer not be a good way to open up the final hole size? I use one every chance I get.
Rick
#40956
On Thu, Apr 18, 2013 at 7:33 PM, Bob Turner <bobturner(at)alum.rpi.edu (bobturner(at)alum.rpi.edu)> wrote:
--> RV10-List message posted by: "Bob Turner" <bobturner(at)alum.rpi.edu (bobturner(at)alum.rpi.edu)>
Mine too. In fact, I had to pull on the mount so I could see all of the hole in the firewall thru the mount.
Van's advice was to use the mount as a guide, and just go ahead and drill, as long as the resulting final holes were going to be round.
Seemed to work okay, the mount is a good guide so the drill doesn't wander in the off-center hole in the firewall.
--------
Bob Turner
RV-10 QB
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=398917#398917
===========
arget="_blank">http://www.matronics.com/Navigator?RV10-List
===========
http://forums.matronics.com
===========
le, List Admin.
="_blank">http://www.matronics.com/contribution
===========
| Quote: | | http://www.matronics.com/Navigator?RV10-List |
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[quote][b]
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napolin(at)me.com
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| Posted: Fri Apr 19, 2013 6:37 am Post subject: Engine Mount |
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I believe thats typical. The engine mount tends to be off a bit. On mine I preloaded it a bit using just using hand pressure to get the holes to align better
Good luck with it
Niko
Nikolaos Napoli
On Apr 18, 2013, at 7:14 PM, Vernon Franklin <vernon.franklin(at)gmail.com (vernon.franklin(at)gmail.com)> wrote:
[quote]I am starting to drill and attach the engine mount to the firewall.
I noticed that after I got the first AN6 attach bolt holding the engine mount in place, the other guide holes in the firewall were visible, but not perfectly centered in the engine mount bolt holes.
Is this something I should be concerned about? Did anyone else experience this? Should I drill away?
--
Vernon Franklin
[b]
| | - The Matronics RV10-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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bill.peyton
Joined: 19 Sep 2010
Posts: 198
Location: St. Louis, MO
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| Posted: Fri Apr 19, 2013 10:56 am Post subject: Re: Engine Mount |
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I actually jigged the drill and used the pilot holes prior to attaching the mount. It took a lot of persuading, but all of the bolts eventually went into the mounts. My rationale was that the firewall pilot holes were far more accurate than the weldment.
Having done it this way, if I did it again I would drill the top two holes using the firewall pilot holes as the center, I would attach the mount with the top two holes and then use the mount as a drill guide for the remaining 4 holes. It will make for a much easier removal and installation if ever required.
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Bill
WA0SYV
Aviation Partners, LLC |
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