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		craig(at)craigandjean.com Guest
 
 
 
 
 
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				 Posted: Sat Jan 23, 2010 6:32 pm    Post subject: Bolts for Rotax motor mount to firewall | 
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				I have the old  bed-style motor mount. I'm surprised that the lower four corners (as opposed to  the top center brace) fasten to the firewall with mere AN3 bolts. I thought it  was a mistake in my fourth-hand kit but that is what the plans show too. What  size bolts hold the newer ring-style mount to the firewall? Can anyone see any  downside to stepping up to AN4?
   
  --  Craig
    [quote][b]
 
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		dougsnash
 
 
  Joined: 14 Apr 2008 Posts: 282
 
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				 Posted: Sun Jan 24, 2010 7:12 am    Post subject: Bolts for Rotax motor mount to firewall | 
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				The only downside to up-sizing your mount bolts that I can see is maintaining edge distance.  If that is possible then you can do it I suppose.
 
 A bigger question would be, have you heard of any problems with using -3 bolts in this application?  If it ain't broke, etc, etc.  There are eight bolts after all.
 
 Do Not Archive
 
 Doug MacDonald
 CH-701 Scratch Builder
 NW Ontario, Canada
 
 --- On Sat, 1/23/10, Craig Payne <craig(at)craigandjean.com> wrote:
 
  	  | Quote: | 	 		   From: Craig Payne <craig(at)craigandjean.com>
  Subject: Bolts for Rotax motor mount to firewall
  To: zenith701801-list(at)matronics.com
  Received: Saturday, January 23, 2010, 8:30 PM
  
  I have the old 
  bed-style motor mount. I'm surprised that the lower
  four corners (as opposed to 
  the top center brace) fasten to the firewall with mere AN3
  bolts. I thought it 
  was a mistake in my fourth-hand kit but that is what the
  plans show too. What 
  size bolts hold the newer ring-style mount to the firewall?
  Can anyone see any 
  downside to stepping up to AN4?
   
  -- 
  Craig
 
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		ggower_99(at)yahoo.com Guest
 
 
 
 
 
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				 Posted: Sun Jan 24, 2010 1:33 pm    Post subject: Bolts for Rotax motor mount to firewall | 
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				Hello Craig,
   
  Only add lightness and simplicity to your airctaft...  
  Start thinking that way and when finished you had added so much weight that will perform like an Armor Truck in a NASCAR race...
   
  Saludos
  Gary Gower
  Flying from Chapala 
  701 912S   302 hrs of fun flying with same bed mount and AN-3 bolts...
 
 --- On Sat, 1/23/10, Craig Payne <craig(at)craigandjean.com> wrote:
 
   	  | Quote: | 	 		  
 From: Craig Payne <craig(at)craigandjean.com>
 Subject: Bolts for Rotax motor mount to firewall
 To: zenith701801-list(at)matronics.com
 Date: Saturday, January 23, 2010, 9:30 PM
 
   I have the old bed-style motor mount. I'm surprised that the lower four corners (as opposed to the top center brace) fasten to the firewall with mere AN3 bolts. I thought it was a mistake in my fourth-hand kit but that is what the plans show too. What size bolts hold the newer ring-style mount to the firewall? Can anyone see any downside to stepping up to AN4?
   
  -- Craig
  	  | Quote: | 	 		  
 
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