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Forward Top Skin-601HD

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lumkes(at)exchange.purdue
Guest

Posted: Fri Dec 08, 2006 8:57 am Post subject: Forward Top Skin-601HD

Hello,

  

 With the discussion  about accessing the instrument panel, it reminded me of a related question that  I could not locate the answer to  in the archives. I am still working on a  601HD (finishing firewall assembly) and planning on using the side opening  canopy with the latching mechanism modification. I would also like to have the  forward top skin removable for access to the instrument panel, but am concerned  that with the side opening canopy the top skin is more structurally  necessary (no side rails like with the forward hinge) and it might not  be a good idea to use rivnuts in place of the rivets.

 Question 1: Are  rivnuts okay in this model and canopy style?

 Question 2: If not,  are there examples of adding an access hatch on the top skin between the tank  and instrument panel?

  

 Thanks,

 John

    [quote][b]

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agbeyer(at)sbcglobal.net
Guest

Posted: Fri Dec 08, 2006 10:40 am Post subject: Forward Top Skin-601HD

John,

 

  

On Dec. 4th I sent a post on my inspection covers on my HDS with pics.  If you can't find it I can send you the pics. 

  

AL from Oshkosh 

 ---

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larry(at)macsmachine.com
Guest

Posted: Fri Dec 08, 2006 12:39 pm Post subject: Forward Top Skin-601HD

John,

I've looked at the side opening canopy on a HD and consider the 

removable forward top skin not to be different from the problems

of the forward opening canopy on the XL.  The number of fasteners needed 

for the skin total near 90 and one can use j-nuts rather than  rivnuts 

or plate nuts.  The sum total of the fasteners make a rather solid 

assembly regardless.  The difference would be that a piece each side 

riveted to the longerons would have to be bent to accept the removable 

skin for side fastening around the perimeter of the access.  Better that 

the firewall and instrument panel be part of the J-nut assembly for 

access. There are lots of examples of other smaller access panels that 

can be done, but real access is the challenge.

I don't particularly like rivnuts as they eventually spin and make a 

difficult time of getting a screw out and they are long for the location 

when a header tank is involved.



Larry McFarland - 601HDS at www.macsmachine.com

Lumkes, John H wrote:

 	  Quote: 	
		   Hello,

  

 With the discussion about accessing the instrument panel, it reminded 

 me of a related question that I could not locate the answer to  in the 

 archives. I am still working on a 601HD (finishing firewall assembly) 

 and planning on using the side opening canopy with the latching 

 mechanism modification. I would also like to have the forward top skin 

 removable for access to the instrument panel, but am concerned that 

 with the side opening canopy the top skin is more structurally 

 necessary (no side rails like with the forward hinge) and it might not 

 be a good idea to use rivnuts in place of the rivets.

 Question 1: Are rivnuts okay in this model and canopy style?

 Question 2: If not, are there examples of adding an access hatch on 

 the top skin between the tank and instrument panel?

  

 Thanks,

 John

 *



 *

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