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  #1  
Old 08-28-2011, 12:10 PM
Ben R's Avatar
Ben R Ben R is offline
 
Join Date: Jul 2011
Location: Monroeville, Alabama
Posts: 132
Default My Poor -6. Engine mount broken in 3 places...

I posted a similar thread in the classifieds explaining why I was looking for a mount...hope I'm not breaking the rules but I wanted to share with everyone else what happened to me yesterday.

I had just began taxiing from my hanger yesterday when my -6 came to an abrupt stop in the grass not 15 feet from the hanger apron. I got out to see what was going on and my left tire was stuck in a very small hole (just big enough for the tire to fit into). My landing gear was bent rearward. I removed the cowling to find that the engine mount was broken in 3 places at the gear attach fitting. I was taxiing at a walking speed since I had just left the hanger. The grass had been recently mowed and I never saw the hole. It was so shallow that the wheel pant wasn't even damaged. I would imagine that there were some hairline cracks in the mount and this was the straw that broke the camel's back, but I can't say for sure. I've never landed the plane hard but I am the third owner.

I've owned the plane for about a month now and it tears me up that its going to be grounded for a while. I'm hoping Van's still sells the mount as I don't think this one could be repaired. I've posted some pics (maybe I did it right). https://picasaweb.google.com/1067442...HDnOTStoC10gE#

The moral of the story...be sure and take a few extra minutes to inspect your mount anytime the cowling is off (a hard lesson learned for me). If this had happened on the runway while landing, the end result would have likely been very different.
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  #2  
Old 08-28-2011, 12:53 PM
sailvi767 sailvi767 is offline
 
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Location: Charlotte NC
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Ben, I am curious if you had a pre buy inspection on the aircraft. Was it operated on a grass strip in a previous life?

George
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  #3  
Old 08-28-2011, 01:49 PM
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Ben R Ben R is offline
 
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George,

I'm sorry to say that I didn't have a thorough pre-buy done on the plane (yet another lesson).

It had been operated on a grass strip for several years but it was pretty smooth.
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  #4  
Old 08-28-2011, 01:57 PM
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Sam Buchanan Sam Buchanan is online now
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Location: North Alabama
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Quote:
Originally Posted by Ben R View Post
I posted a similar thread in the classifieds explaining why I was looking for a mount...hope I'm not breaking the rules but I wanted to share with everyone else what happened to me yesterday.

I had just began taxiing from my hanger yesterday when my -6 came to an abrupt stop in the grass not 15 feet from the hanger apron. I got out to see what was going on and my left tire was stuck in a very small hole (just big enough for the tire to fit into). My landing gear was bent rearward. I removed the cowling to find that the engine mount was broken in 3 places at the gear attach fitting. I was taxiing at a walking speed since I had just left the hanger. The grass had been recently mowed and I never saw the hole. It was so shallow that the wheel pant wasn't even damaged. I would imagine that there were some hairline cracks in the mount and this was the straw that broke the camel's back, but I can't say for sure. I've never landed the plane hard but I am the third owner.

I've owned the plane for about a month now and it tears me up that its going to be grounded for a while. I'm hoping Van's still sells the mount as I don't think this one could be repaired. I've posted some pics (maybe I did it right). https://picasaweb.google.com/1067442...HDnOTStoC10gE#

The moral of the story...be sure and take a few extra minutes to inspect your mount anytime the cowling is off (a hard lesson learned for me). If this had happened on the runway while landing, the end result would have likely been very different.
Ben

Sorry about the misfortune with your "new" plane. Yes, it is likely cracks had been present in the mount for some time, and I suspect that mount had seen some hard days.

Vans should still have the mount in their inventory since they still offer finish kits for the -6. Your mount can probably be repaired by either a good craftsman or Vans' mount vendor. Give Vans a call and they will point you in the right direction.
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Last edited by Sam Buchanan : 08-28-2011 at 01:59 PM.
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  #5  
Old 08-28-2011, 02:01 PM
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Thanks Sam. I'm going to give Vans a call in the morning and see what I can come up with.
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  #6  
Old 08-28-2011, 02:28 PM
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bogopper bogopper is offline
 
Join Date: May 2008
Location: UK
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Hi Ben

Sorry to hear about your problems, hopefully you can get a new engine mount soon.

Here in the UK we operate from 'rough grass' a lot. This has caused a few cracked engine mounts. So a modification has been developed where a metal filler is welded into the engine mount to add strength. My -6 had it done over 10 years ago, i know lots of -6 & -7's with the modification. if you search here, and on google for 'Netherhorpe mod' you will find details and pics. It my be worth considering for your next engine mount.

Good luck

Mark Turner
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  #7  
Old 08-28-2011, 02:30 PM
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loopfuzz loopfuzz is offline
 
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Ben, as much as that does suck, I would look at it on the bright side. It could have happened at worse time. Like during a landing!
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  #8  
Old 08-28-2011, 02:36 PM
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flion flion is offline
 
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Location: Flagstaff, AZ
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Experimental Aircraft Metal Fabrication. Van's will send you directly to them if you want to ask about repair or if you need to have your new mount match-drilled to your existing gear legs.I dealt with them when I folded my nose gear last year; they were great. It took a few weeks to get the mount (my sense is that they do a steady business with Van's and slide you into their schedule) but it was perfect. I was lucky because my original mount was one of theirs, so the new mount bolted right in. It's my understanding that earlier mounts came from a supplier that did not jig them for welding and so there is some slight variation. AZTAILWIND encountered this a few years ago when replacing his mount; the bolt holes were slightly off. But when I raised the question, they said they could help since I was sending them my old mount to be assessed anyway. It turned out moot for me; they found their mark under the powdercoat immediately.
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  #9  
Old 08-28-2011, 04:27 PM
rvaitor87 rvaitor87 is offline
 
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Default broken mount

Dude, I feel your pain. Read my reply in "thunder in landings"
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  #10  
Old 08-28-2011, 05:00 PM
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Location: Sydney, Australia
Posts: 425
Default Ouch!!

When you catch your breath, can you post a photo of the lower gear attach point, that is the welded section around the lower firewall attach. This would have been the pivot during the failure.

Also, do you have wooden gear leg stiffeners bonded to the gear legs? These are designed to reduce the springiness of the legs and should be visible under the gear leg fairings.

Doug Gray

Last edited by Doug : 08-29-2011 at 08:48 AM.
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