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Windscreen frame

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cazw(at)ihug.co.nz
Guest

Posted: Sat Sep 23, 2006 1:40 am Post subject: Windscreen frame

Listers

  

 Having trouble matching the screen frame to the  canopy (slider) frame.  After careful measuring and ensuring correct  positioning and alignment of mounting points etc it would appear that my screen  frame is distorted.  I am not talking about a slight bend here, it  appears as though one side of the frame has been cut too long before the  mounting plate was welded in place.  The result is that one side sits  about 0.5 inch higher than the other.  Has anyone else had this  problem?  Is there a fix for this, or is it something I will just have to  work around?  All suggestions gratefully  received.   

  

 Clive Whittfield

 New Zealand

 RV6 - fuselage well on the way

  



   [quote][b]

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tcervin(at)valkyrie.net
Guest

Posted: Sat Sep 23, 2006 5:54 am Post subject: Windscreen frame

Cliff, The slider frame will have a tube on each side in the  lower front to accept your track wheels. On my frame each side was quite a bit  longer than needed and can be shortened.

       A 1/2 inch should be no problem  to accomplish but I wouldn't do this until all the other fitting points seem to  be coming into spec. I trimmed these tubes a little at a time until the  overall fit came right in.

                                                                                                                                                                           Tom in Ohio (RV6-A)

 [quote]   ---

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cazw(at)ihug.co.nz
Guest

Posted: Sat Sep 23, 2006 11:14 am Post subject: Windscreen frame

Thanks Tom.  Yes I understand the need to  adjust the height of the canopy frame to suit, and using spacers under the  canopy where needed etc.  It just appears that the screen frame (roll bar)  is the culprit here.  I have sat it upright on a dead flat bench  and measured the heights at various points.  When comparing one  side to the other, this is where that 0.5 inch difference shows up.  Even  my mark one eyeball tells me it looks like the frame has been 'pushed to one  side'.  The support bar mount is still centred tho' so I'm pretty sure any  attempts to simply heat and bend would cause other problems.  This looks  like it would need cutting, reshaping and welding.  Do all RV6   roll bars have this degree of variation in their shape, or am I  worrying about nothing and should I simply ignore and adjust/ shim canopy to  suit?

  

 Clive in NZ

  

  

             Subject:              Re: Windscreen    frame        From:              Tom & Cathy Ervin (tcervin(at)valkyrie.net ([email]tcervin(at)valkyrie.net?subject=Re:%20Windscreen%20frame&replyto=008f01c6df17$975c2c80(at)your4dacd0ea75[/email]))        Date:              [b]Sat Sep 23 - 6:54        AM[/b] [quote] 	  Quote: 	
		  Cliff, The slider frame will have a tube on each side in the lower front 

to accept your track wheels. On my frame each side was quite a bit 

longer than needed and can be shortened.

      A 1/2 inch should be no problem to accomplish but I wouldn't do 

this until all the other fitting points seem to be coming into spec. I 

trimmed these tubes a little at a time until the overall fit came right 

in.

                                                                         

                                                                         

                       Tom in Ohio (RV6-A)

	
[b]

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tcervin(at)valkyrie.net
Guest

Posted: Sat Sep 23, 2006 4:03 pm Post subject: Windscreen frame

Clive, Mine fit pretty well but I have heard of people  pulling in the sides.....fit was too wide. Shimming the canopy and-or  combinations of both.

                                                                                                                                                                                                             Tom in Ohio

 [quote]   ---

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n616tb(at)btsapps.com
Guest

Posted: Sat Sep 23, 2006 4:09 pm Post subject: Windscreen frame

I would discuss this live with Van’s.  If it is irregular beyond their QC maybe they will just send you another one.  

Tim  

RV-6 Would be flying tomorrow if my address change didn’t put a kink in my airworthiness application.  Dang!  

           

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Clive Whittfield

 Sent: Saturday, September 23, 2006 12:10 PM

 To: rv-list(at)matronics.com

 Subject: Re: Windscreen frame  

  

     

Thanks Tom.  Yes I understand the need to adjust the height of the canopy frame to suit, and using spacers under the canopy where needed etc.  It just appears that the screen frame (roll bar) is the culprit here.  I have sat it upright on a dead flat bench and measured the heights at various points.  When comparing one side to the other, this is where that 0.5 inch difference shows up.  Even my mark one eyeball tells me it looks like the frame has been 'pushed to one side'.  The support bar mount is still centred tho' so I'm pretty sure any attempts to simply heat and bend would cause other problems.  This looks like it would need cutting, reshaping and welding.  Do all RV6  roll bars have this degree of variation in their shape, or am I worrying about nothing and should I simply ignore and adjust/ shim canopy to suit?  

    

   

    

Clive in NZ  

    

   

    

   

            

Subject:         

             

Re:   Windscreen frame             

From:         

             

Tom   & Cathy Ervin (tcervin(at)valkyrie.net ([email]tcervin(at)valkyrie.net?subject=Re:%20Windscreen%20frame&replyto=008f01c6df17$975c2c80(at)your4dacd0ea75[/email]))             

Date:         

             

Sat   Sep 23 - 6:54 AM         	  Quote: 	
		   	  Quote: 	
		  Cliff, The slider frame will have a tube on each side in the lower front to accept your track wheels. On my frame each side was quite a bit longer than needed and can be shortened.      A 1/2 inch should be no problem to accomplish but I wouldn't do this until all the other fitting points seem to be coming into spec. I trimmed these tubes a little at a time until the overall fit came right in.                                                                                                                                                                         Tom in Ohio (RV6-A) 	
to accept your track wheels. On my frame each side was quite a bit 	
0 	  Quote: 	
		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  to accept your track wheels. On my frame each side was quite a bit 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		  longer than needed and can be shortened. 	
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		        A 1/2 inch should be no problem to accomplish but I wouldn't do 	
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		        A 1/2 inch should be no problem to accomplish but I wouldn't do 	
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		        A 1/2 inch should be no problem to accomplish but I wouldn't do 	
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		        A 1/2 inch should be no problem to accomplish but I wouldn't do 	
3

  

        [quote][b]

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Doug Gray

Joined: 10 Jan 2006
Posts: 112
Location: Sydney, Australia

Posted: Sat Sep 23, 2006 4:32 pm Post subject: Windscreen frame

Clive,



Vans response to these type of questions is usually to 'just make it

fit'. This is easy to say for someone who has the skills and experience.

It may also be something for which they would consider replacing the

part. You should call.



Do you have the canopy frame installed yet?



I am about to install my own RV-6 canopy and I intend to get the canopy

frame fitted to the fuselage shape before I worry about  the roll bar.

Right now I can see I will need to do a lot of work to get it within the

1/16" to 1/8" as called out on SC-2.



For both parts I fully expect to have my welder make some 'adjustments'.

Some local builders have needed to add a small section of tube to the

frame, yours is the first roll bar I have heard that may need some

serious adjustment. Just be certain the change is exactly what you want

before getting the work done.



I'm sure you could make it fit the way it is, but judging from your

comments this may not be the right solution for you.



Having said all that, by eyeball my roll bar looks pretty right in width

and symmetry. Famous last words.



Doug Gray (in OZ)

On Sun, 2006-09-24 at 07:10 +1200, Clive Whittfield wrote:

 	  Quote: 	
		   Thanks Tom.  Yes I understand the need to adjust the height of the

 canopy frame to suit, and using spacers under the canopy where needed

 etc.  It just appears that the screen frame (roll bar) is the culprit

 here.  I have sat it upright on a dead flat bench and measured the

 heights at various points.  When comparing one side to the other, this

 is where that 0.5 inch difference shows up.  Even my mark one eyeball

 tells me it looks like the frame has been 'pushed to one side'.  The

 support bar mount is still centred tho' so I'm pretty sure any

 attempts to simply heat and bend would cause other problems.  This

 looks like it would need cutting, reshaping and welding.  Do all RV6

  roll bars have this degree of variation in their shape, or am I

 worrying about nothing and should I simply ignore and adjust/ shim

 canopy to suit?

  

 Clive in NZ

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Mark Phillips in TN

Joined: 10 Jan 2006
Posts: 431
Location: Columbia, TN

Posted: Sat Sep 23, 2006 7:47 pm Post subject: Windscreen frame

In a message dated 09/23/2006 4:28:58 PM Central Daylight Time, cazw(at)ihug.co.nz writes:

  	  Quote: 	
		  Do all RV6  roll bars have this degree of variation in their shape, or am I worrying about nothing and should I simply ignore and adjust/ shim canopy to suit? 	


 >>>

  

 Hi Clive-  You might best leave the monster rollbar as is and make the frame match it, since re-bending the smaller tubes will result in less hernias and insanity.  These frames will typically have to be beat, bashed, stomped, cussed at, hootchie-cood and occasionally sweet-talked into shape.  As a matter of fact, I spent the better part of yesterday doing all of the above on a -7.  Fear not, there is help a mouse-click away.  Take a look at Mike Schipper's excellent description of how he wrestled his frame into submission:

  

 http://www.my9a.com/finish6.asp

  

 I've seen other descriptions, but this seems typical- an archive search will expose many horror stories and a great deal of help...

  

 From The Possumworks in TN (USA)

 Mark Phillips http://websites.expercraft.com/n51pw/[url=http://www.my9a.com/finish6.asp][/url]

  [quote][b]

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_________________
From The PossumWorks...

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