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Cracked canopy

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n801bh(at)netzero.com
Guest

Posted: Sat Jan 13, 2007 10:11 am Post subject: Cracked canopy

On a flight around the patch with a hangar mate in his RV-6 yesterday the canopy cracked while we were taxing out. Taxiway was a little rough for built up ice and the temp was -2f. About halfway to the active we heard a pop and noticed the rear portion of the canopy had a 3 inch crack going bothways from the center stiffener, this was 5" or so rearward of the place where the top mates with the front windshield. He is getting stuff together to replace the thing but not looking forward to the VERY lengthy process. Since he doesn't like puters I have two questions for you guys that I will relay back to him. 

Is there any product that can be squirted, injected, packed or by whatever means,,, into the crack to glue it back together till he gets the repair done???  

He tells me the canopy comes in a complete section, he fitted it so that it fit perfectly all the way around and then cut the in half at the like Vans calls for. Has anybody ever replaced just the back half by making a template of the bad section?? or will he need to go through the entire whole canopy thing?? 

thanks in advance,  

 do not archive



Ben Haas

N801BH

www.haaspowera========================sp;         - The&nbsp= the many List utilities such as t================================================sp;         - NEW&nbspp;content now also available via the Web&n=======================================



   [quote][b]

n616tb(at)btsapps.com
Guest

Posted: Sat Jan 13, 2007 10:38 am Post subject: Cracked canopy

A friend cracked his canopy up in the front windscreen area.  He had a local plexi repair guy come out and do a repair.  They inject something in there and buff it, etc.  It looked pretty good except the area was such that it had a little blur in it.  His was in a terrible spot for that but on top might be OK.  I would certainly look into that before replacing the canopy…  Yuck.  

Tim  

           

  

From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of n801bh(at)netzero.com

 Sent: Saturday, January 13, 2007 12:09 PM

 To: rv-list(at)matronics.com

 Subject: RE: Cracked canopy  

  

   

On a flight around the patch with a hangar mate in his RV-6 yesterday the canopy cracked while we were taxing out. Taxiway was a little rough for built up ice and the temp was -2f. About halfway to the active we heard a pop and noticed the rear portion of the canopy had a 3 inch crack going bothways from the center stiffener, this was 5" or so rearward of the place where the top mates with the front windshield. He is getting stuff together to replace the thing but not looking forward to the VERY lengthy process. Since he doesn't like puters I have two questions for you guys that I will relay back to him.  

Is there any product that can be squirted, injected, packed or by whatever means,,, into the crack to glue it back together till he gets the repair done???   

He tells me the canopy comes in a complete section, he fitted it so that it fit perfectly all the way around and then cut the in half at the like Vans calls for. Has anybody ever replaced just the back half by making a template of the bad section?? or will he need to go through the entire whole canopy thing??  

thanks in advance,   

 do not archive

 

 Ben Haas

 N801BH

 www.haaspowera========================sp;         - The = the many List utilities such as t=======================sp;         - NEW&nbspp;content now also available via the Web&n=======================================

 

 

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        [quote][b]

gert.v(at)sbcglobal.net
Guest

Posted: Sat Jan 13, 2007 10:50 am Post subject: Cracked canopy

U know, those may be questions best asked to folks like Todd's Canopees....



I believe Todd has supplied on request partial canopees when one end had 

a defect after blowing.



n801bh(at)netzero.com wrote:

 	  Quote: 	
		  

 On a flight around the patch with a hangar mate in his RV-6 yesterday 

 the canopy cracked while we were taxing out. Taxiway was a little 

 rough for built up ice and the temp was -2f. About halfway to the 

 active we heard a pop and noticed the rear portion of the canopy had a 

 3 inch crack going bothways from the center stiffener, this was 5" or 

 so rearward of the place where the top mates with the front 

 windshield. He is getting stuff together to replace the thing but not 

 looking forward to the VERY lengthy process. Since he doesn't like 

 puters I have two questions for you guys that I will relay back to him.



 Is there any product that can be squirted, injected, packed or by 

 whatever means,,, into the crack to glue it back together till he gets 

 the repair done??? 



 He tells me the canopy comes in a complete section, he fitted it so 

 that it fit perfectly all the way around and then cut the in half at 

 the like Vans calls for. Has anybody ever replaced just the back half 

 by making a template of the bad section?? or will he need to go 

 through the entire whole canopy thing??



 thanks in advance, 



  do not archive



 Ben Haas

 N801BH

 www.haaspowera========================sp;         - The = the many List utilities such as t================================================sp;         - NEW&nbspp;content now also available via the Web&n=======================================



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rv7(at)b4.ca
Guest

Posted: Sat Jan 13, 2007 10:59 am Post subject: Cracked canopy

On 10:09 2007-01-13 "n801bh(at)netzero.com" <n801bh(at)netzero.com> wrote:

 	  Quote: 	
		   Has anybody ever replaced just the back

 half by making a template of the bad section?? or will he need to go

 through the entire whole canopy thing?? thanks in advance,


	


If he does end up needing (or just wanting) to replace the whole thing,

point him to the Matronics Wiki on glueing the canopy instead.



    http://www.matronics.com/wiki/index.php/Gluing_Your_Canopy



Glueing will bond the canopy in place without placing any localized

stresses on the plexi like you will get with screws/rivets.



-Rob

N122RL(at)aol.com
Guest

Posted: Sat Jan 13, 2007 11:07 am Post subject: Cracked canopy

Had the same thing happen to my 6-A two years ago in the same place. I glued the crack back together with some glue I got from ca. I then put a 1 in. backup along the inside of the crack. Have been waiting for the right time to replace the canopy. I can check to see what the stuff is that I used if you like, It really works great.

  

 Bob Lau 6-A 800 hrs.

  [quote][b]

Terry Watson

Joined: 09 Jan 2006
Posts: 290
Location: Seattle, WA USA

Posted: Sat Jan 13, 2007 11:32 am Post subject: Cracked canopy

Here's an item from the RV list archives about repairing canopy cracks.

There are lots more in there, but this should get you started.



Terry



Match:  #15 Message:  #102802 Date:  Dec 10, 2002 From:  Jeff Point

<jpoint(at)mindspring.com> Subject:  Re: Canopy crack  

Chris,



I have a nearly identical crack in mine near the forward end of the 

skirt (on a tip up though) which happened while drilling.  I stop 

drilled it, used Weldon 3 injected with a medical syringe (it is watery 

thin) and let it cure.  Then I filled the stop-drill hole with epoxy, 

let that cure, and sanded it flush, then used Micro Mesh to fix the 

plexi.  Turned out, well, not perfect, but not too bad, and better than 

a new canopy.  A better solution (which I considered but abandoned) may 

have been to find or make a plug of plexi for the hole and glue it in 

with Weldon, then sand it flush.



I played around quite a bit with the Weldon and scrap plexi.  Based on 

my very un-scientific testing, it seems that the joint is about 50-75% 

as strong as unbroken plexi, judging by the force required to re-break 

the fused piece.  Pretty amazing stuff.  Never did try disolving plexi 

shavings though.  Certainly I have plenty of them after cutting and 

drilling the canopy.  I have 99.5% of the one quart can left, and you're 

welcome to it if you don't feel like waiting for AC$.



Jeff Point



--

pitts_pilot(at)bellsouth.
Guest

Posted: Sat Jan 13, 2007 11:35 am Post subject: Cracked canopy

n801bh(at)netzero.com (n801bh(at)netzero.com) wrote:

  	  Quote: 	
		     

On a flight around the patch with a hangar mate in his RV-6 yesterday the canopy cracked while we were taxing out. Taxiway was a little rough for built up ice and the temp was -2f. About halfway to the active we heard a pop and noticed the rear portion of the canopy had a 3 inch crack going bothways from the center stiffener, this was 5" or so rearward of the place where the top mates with the front windshield. He is getting stuff together to replace the thing but not looking forward to the VERY lengthy process. Since he doesn't like puters I have two questions for you guys that I will relay back to him.     

Is there any product that can be squirted, injected, packed or by whatever means,,, into the crack to glue it back together till he gets the repair done???  	
 Go to a sign shop and buy a can of glue for acrylic.  It's like water, and you will have good luck using a diabetic syringe to administer it to the crack.  Use just a little bit and it'll weep along the crack.

  	  Quote: 	
		      

He tells me the canopy comes in a complete section, he fitted it so that it fit perfectly all the way around and then cut the in half at the like Vans calls for. Has anybody ever replaced just the back half by making a template of the bad section?? or will he need to go through the entire whole canopy thing?? 	
 Sorry, can't help with that one.  One of two ain't bad!!!

 linn

 [quote]    

thanks in advance,      

 do not archive

   

 Ben Haas

 N801BH

 [url=http://www.haaspowera========================sp;         - The = the many List utilities such as t================================================sp;         - NEW&nbspp;content now also available via the Web&n=======================================]www.haaspowera========================sp;         - The = the many List utilities such as t================================================sp;         - NEW&nbspp;content now also available via the Web&n=======================================[/url]

   

   

   

           	  Quote: 	
		  

	
 [b]

jeffpoint

Joined: 10 Jan 2006
Posts: 72
Location: MKE

Posted: Sat Jan 13, 2007 2:15 pm Post subject: Cracked canopy

Terry beat me to it, but I was going to recommend Weld-on 3.  It's 

available from Spruce or other suppliers.  It's watery thin, wicks into 

the crack and sets up very strong.  Terry quoted my old post with more 

details.



Jeff Point

RV-6 flying

RV-8 tail kit

Milwaukee

do not archive

 	  Quote:

_________________
Jeff Point
RV-6
Milwaukee WI

jpleasants(at)bellsouth.n
Guest

Posted: Mon Jan 15, 2007 10:28 am Post subject: Cracked canopy

Ben:    

     As a temporary fix  (until a more permanent one), I know of airplanes with cracks in the windshield,  still flying.

  

     First, stop drill  the crack,

  

     put a row of 1/16  holes on each side of the crack, about 3/8 inch apart and 1/4 from the  crack.

  

     Lace with safety  wire, so that it looks like a shoe lace on each side.

  

     Apply silicone  sealant on both sides of the windshield (filling the holes).

  

     It'll last for years  if necessary.

  

     Do not  archive

  

 YMMV

  

 Jim Pleasants

     

 [quote]   ---

pitts_pilot(at)bellsouth.
Guest

Posted: Mon Jan 15, 2007 1:25 pm Post subject: Cracked canopy

Sorry Jim, but this repair will be as ugly as it gets!You did good with the 'stop drill the cracks', but after that wick some weldon (3, I think) down the crack and it'll glue it back together.  I cracked my canopy on the Pitts doing a rather violent outside snap, and when I tried to line it up to put the glue on, the piece cracked completely out.  I taped the piece back in as best I could and used the acrylic glue.  Been that way for about 9 years now.  I'm just too cheap to buy a new one!!!   

 Linn

 do not archive

 

 Jim Pleasants wrote:

 [quote]                    Ben:    

         As a temporary fix  (until a more permanent one), I know of airplanes with cracks in the windshield,  still flying.

      

         First, stop drill  the crack,

      

         put a row of 1/16  holes on each side of the crack, about 3/8 inch apart and 1/4 from the  crack.

      

         Lace with safety  wire, so that it looks like a shoe lace on each side.

      

         Apply silicone  sealant on both sides of the windshield (filling the holes).

      

         It'll last for years  if necessary.

      

         Do not  archive

      

     YMMV

      

     Jim Pleasants

         

      	  Quote: 	
		           ----- Original Message ----- 

         From:    n801bh(at)netzero.com (n801bh(at)netzero.com)     

         To:     rv-list(at)matronics.com (rv-list(at)matronics.com)     

         Sent: Saturday, January 13, 2007 1:09    PM

         Subject: RE: Cracked  canopy

         

     

         

On a flight around the patch with a hangar mate in his RV-6 yesterday the    canopy cracked while we were taxing out. Taxiway was a little rough for built    up ice and the temp was -2f. About halfway to the active we heard a pop and    noticed the rear portion of the canopy had a 3 inch crack going bothways from    the center stiffener, this was 5" or so rearward of the place where the top    mates with the front windshield. He is getting stuff together to replace the    thing but not looking forward to the VERY lengthy process. Since he doesn't    like puters I have two questions for you guys that I will relay back to    him.         

Is there any product that can be squirted, injected, packed or by whatever    means,,, into the crack to glue it back together till he gets the repair    done???          

He tells me the canopy comes in a complete section, he fitted it so that it    fit perfectly all the way around and then cut the in half at the like Vans    calls for. Has anybody ever replaced just the back half by making a template    of the bad section?? or will he need to go through the entire whole canopy    thing??         

thanks in advance,          

 do not  archive

     

 Ben Haas

 N801BH

        

	
 [b]

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