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-6A Engine Mount Clearance

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webmaster(at)flion.com
Guest

Posted: Tue Aug 22, 2006 7:41 pm Post subject: -6A Engine Mount Clearance

I’ve installed my engine mount on the firewall and attached the gear leg.  The problem is, with the bolt head closest to the firewall, it touches the firewall.  The other way around, I can’t get the nut in there; it’s too thick.  Have any of you -6A, -7A, or -9A builders run into this?  If so, what was the solution?  Spacers between the mount and firewall?  

   

Patrick Kelley – RV-6A – In the hanger and wheels installed (not final)  

       [quote][b]

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sportypilot(at)stx.rr.com
Guest

Posted: Tue Aug 22, 2006 8:40 pm Post subject: -6A Engine Mount Clearance

knock a dent /drill a hole in the firewall if its  for the front gear leg, the firewall forward kit comes with a button to fill  that new void you just made.. I just dented  mine.. didn't go through the ss..  

 [quote]   ---

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Hopperdhh(at)aol.com
Guest

Posted: Wed Aug 23, 2006 4:00 am Post subject: -6A Engine Mount Clearance

Patrick,

  

 I would say let it touch, or force the firewall back a little if its only  1/16 inch or so.

  

 You will want to make a hole to enable you to get the bolt out should you  ever need to remove the gear leg.  Why would you need to remove the gear  leg?  Sometimes the hole becomes sloppy (elongates), or you may bend the  gear leg like I did!  The bolt on the -7 is inserted from the back  side of the firewall through this hole and the all-metal locknut is installed on  the front (top) side.

  

 My plans say a 3/4 inch hole one place and a 1 inch hole another  place.  The plug that came with my kit was 7/8, I believe.  Anyway, it  was a poor fit into the 3/4 inch hole, but I got it in there.

  

 What I did the second time around was to sight down the bolt hole to locate  the firewall hole, then remove the mount and used a unibit to drill the  hole.  You can get any size plug at hardware stores, or in the  plumbing department of the big stores.

  

 Dan Hopper

 RV-7A

  

  

 In a message dated 8/22/2006 11:43:07 P.M. Eastern Daylight Time,  webmaster(at)flion.com writes:

  	  Quote: 	
		        

Iâ€™ve installed my engine mount on    the firewall and attached the gear leg.  The problem is, with the bolt    head closest to the firewall, it touches the firewall.  The other way    around, I canâ€™t get the nut in there; itâ€™s too thick.  Have any of you    -6A, -7A, or -9A builders run into this?  If so, what was the    solution?  Spacers between the mount and    firewall?   

    

Patrick Kelley â€“ RV-6A â€“ In the    hanger and wheels installed (not    final)

	


 

  

  [quote][b]

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bertrv6(at)highstream.net
Guest

Posted: Wed Aug 23, 2006 7:59 am Post subject: -6A Engine Mount Clearance

Quoting Sportypilot <sportypilot(at)stx.rr.com>:



[quote] knock a dent /drill a hole in the firewall if its for the front gear leg, the

 firewall forward kit comes with a button to fill that new void you just

 made.. I just dented mine.. didn't go through the ss..

   ---

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rv8a2001(at)yahoo.com
Guest

Posted: Wed Aug 23, 2006 9:27 am Post subject: -6A Engine Mount Clearance

Get a half height nut.

   

  Scott



bertrv6(at)highstream.net wrote:

  [quote]--> RV-List message posted by: bertrv6(at)highstream.net



Quoting Sportypilot :



[quote] knock a dent /drill a hole in the firewall if its for the front gear leg, the

 firewall forward kit comes with a button to fill that new void you just

 made.. I just dented mine.. didn't go through the ss..

 ---

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Jim Ellis

Joined: 26 Jan 2006
Posts: 11

Posted: Wed Aug 23, 2006 11:19 am Post subject: -6A Engine Mount Clearance

Another way to attach the nose strut is with a tapered pin.  You will  still need a hole in the firewall if you want to remove the strut for repairs or  replacement in the future.

  

 See:

  

 http://www.rvwiki.org/index.php?title=Nose_Gear_Strut

  

 This is for a 9-A but I think it is similar to a 6-A.

  

 Jim Ellis

 RV9-A, N155T

 Flying 12 hours (Yippee!)

  [quote][b]

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gerf(at)gerf.com
Guest

Posted: Wed Aug 23, 2006 11:56 am Post subject: -6A Engine Mount Clearance

 	  Quote: 	
		  From the wiki my understanding is that this can help with nose 

wheel shimmy induced by movement in this joint.  Is this the 
	


same thing at issue with tail dragger main gear shimmy ?



I've heard that the solution is to deflate the main tires to 

around 22 lbs to dampen the shimmy.  If the source of the 

problem is the same, the taper pin might be better solution 

than deflating the tires.



g



 	  Quote: 	
		   Another way to attach the nose strut is with a tapered pin.  

 You will  still 

 need a hole in the firewall if you want to remove the strut for 

 repairs or  

 replacement in the future.

  

 See:

  

 _http://www.rvwiki.org/index.php?title=Nose_Gear_Strut_ 

 ( ) 

  

 This is for a 9-A but I think it is similar to a 6-A.

  

 Jim Ellis

 RV9-A, N155T

 Flying 12 hours (Yippee!)

 


	


-- 

__g__



========================================================== 

Gerry Filby                                  gerf(at)gerf.com

                   Tel: 415 203 9177

----------------------------------------------------------

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webmaster(at)flion.com
Guest

Posted: Wed Aug 23, 2006 6:07 pm Post subject: -6A Engine Mount Clearance

Thanks for all the responses.  I happened to need to call Van’s to order some parts and asked about it and was told that since about 5 years ago the plans call for a hole to be drilled.  That’s what I get for an old fuselage kit and a new finish kit. All better now.  I have a 7/7A preview plans set and, sure enough, there it is.  Thanks again for all the advice.  

   

Patrick Kelley – RV-6A – wings on, plumbing continuing.  

       [quote][b]

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