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Lexan windshield question

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Rex Rodebush

Joined: 10 Jan 2006
Posts: 209
Location: Branson West area, Missouri

Posted: Sat Jul 04, 2009 9:42 am Post subject: Lexan windshield question

I'm fitting up the windshield.  Do I just push it down and attach along the sides?  I can do this but it takes a fair amount of pressure.  Does anyone use heat to reduce the tension?



Thanks,



Rex Rodebush

Mark III X-tra

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slyck(at)frontiernet.net
Guest

Posted: Sat Jul 04, 2009 10:24 am Post subject: Lexan windshield question

My windshield is non standard but...

Do one side first, (should be zero resistance) then push it down to  

the other side and clamp it before drilling.

BB



On 4, Jul 2009, at 1:42 PM, Rex Rodebush wrote:



 	  Quote: 	
		   



 I'm fitting up the windshield.  Do I just push it down and attach  

 along the sides?  I can do this but it takes a fair amount of  

 pressure.  Does anyone use heat to reduce the tension?



 Thanks,



 Rex Rodebush

 Mark III X-tra





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p 51478#251478

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mdnanwelch7(at)hotmail.co
Guest

Posted: Sat Jul 04, 2009 12:24 pm Post subject: Lexan windshield question

Hi Rex C

  

   Bob's right about attaching one side first (with clecos).  Then C bend the windshield in place C and drill the opposite side.  Do NOT use any heat!!  The Lexan is so tough C I doubt you could break it by bending it.

  

   A couple pointers; 

  

   When attaching my Lexan C after fastening the first side with clecos C I noticed the opposite side post wanted to deform from it's normal position when trying to bend the Lexan in place C and secure it with clamps.  My solution was to secure a couple of temporary cross braces between the posts C thereby helping to insure the installation of the Lexan didn't distort the side posts when clamping it in place.

  

   I decided to predrill the side posts before attaching the Lexan.  It is very easy to see the underlying hole in the post C and then drill each Lexan hole C cleco-ing as you go.  Since the Lexan hole is supposed to be oversized anyway C there isn't much of a problem if you are off a little with your Lexan holes.

  

 Mike Welch

 MkIII  turbo GEO

  

 

 

 	  Quote: 	
		   Subject: Lexan windshield question

 From: rrodebush(at)tema.net

 Date: Sat C 4 Jul 2009 10:42:44 -0700

 To: kolb-list(at)matronics.com

 

 --> Kolb-List message posted by: "Rex Rodebush" <rrodebush(at)tema.net>

 

 I'm fitting up the windshield. Do I just push it down and attach along the sides? I can do this but it takes a fair amount of pressure. Does anyone use heat to reduce the tension?

 

 Thanks C

 

 Rex Rodebush

 Mark III X-tra

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=251478#251478

 

 

 

 

 

 

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John Bickham

Joined: 10 Jan 2006
Posts: 170
Location: St. Francisville, LA

Posted: Sat Jul 04, 2009 5:55 pm Post subject: Re: Lexan windshield question

On my last lexan replacement I used the small ratcheting straps to pull the lexan down for drilling and clecoing.  Of course,  you need to use the appropriate padding to avoid scratches to lexan and damage to fabric. This helped with the problem that Mike W pointed out with a lot of pressure on clecos and clamps.



Made the one man job a bit easier for me anyway.



Next replacement gotta put clear tape under door hinges.  Helps keep the water out when caught in those light rains on those XC flights.  John H and John W trick!



Wouldn't use heat but might do it in the sun!

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_________________
Thanks too much,

John Bickham
Mark III-C w/ 912UL
St. Francisville, LA

I know many pilots and a few true aviators. There is a distinct difference that I have the greatest respect for.

icrashrc

Joined: 16 Mar 2006
Posts: 247
Location: Mishawaka, In

Posted: Sun Jul 05, 2009 2:57 am Post subject: Re: Lexan windshield question

We worked from the center out to try and keep stresses to a minimum.  There's more than one way to do this job as you can see from the other responses.



http://www.ill-eagleaviation.com/windshield_installation.htm

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www.ill-EagleAviation.com

do not archive

Rex Rodebush

Joined: 10 Jan 2006
Posts: 209
Location: Branson West area, Missouri

Posted: Mon Jul 06, 2009 8:01 am Post subject: Re: Lexan windshield question

Thanks guys for the good tips.  I've never worked with lexan before so kept waiting for the loud "CRACK".  It's formed around tight now and no problems.



Rex

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John Hauck

Joined: 09 Jan 2006
Posts: 4639
Location: Titus, Alabama (hauck's holler)

Posted: Mon Jul 06, 2009 8:41 am Post subject: Lexan windshield question

 	  Quote: 	
		   Thanks guys for the good tips.  I've never worked with lexan before so 

 kept waiting for the loud "CRACK".  It's formed around tight now and no 

 problems.



 Rex


	




Rex:



Plexiglass is brittle, acrylic more so, but Lexan (polycarbonate) can be put 

into a brake and bent 90 degrees without breaking.  It is unique for making 

small mounts for hand held radios, etc., because of this ability to take a 

sharp brake.



john h

mkIII

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John Hauck
MKIII/912ULS
hauck's holler
Titus, Alabama

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