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Covering temp

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MKIIIX040

Joined: 31 Mar 2006
Posts: 123
Location: Millinocket, Maine

Posted: Wed Dec 13, 2006 9:16 am Post subject: Covering temp

Hey all,

  

 I had a pro show me how to cover one of my H.  Stabs.

 Very very helpful. So after he left I thought I'd get the  hang of passing the iron over it again. And ofcourse dumb ass that I am, I bent  a 7/8" tube. Don't remember the temp.

  

 The question is if it's that easy to bend a 7/8" tube what  temperature should I expect to get to on the smaller 5/16"  surfaces?

  

 Anyone?

 Happy Ho Ho

  

 Vic

 912 Extra

 Maine

   [quote][b]

_________________
MKIIIX040
912UL

slyck(at)frontiernet.net
Guest

Posted: Wed Dec 13, 2006 9:42 am Post subject: Covering temp

Vic, we were taught to set the iron on "wool"



When you get most of the slack out run it hard on all the little

lumps that are directly over any tubes.  Then go back to the

loosest areas to complete.



If it is an ordinary clothes iron always run it backwards

with the point to the rear to avoid edge puckers.

I follow it with the other hand to feel the heat and tension.



Go 90 degrees to any furrows or linear wrinkles.

Big ones first.

BB



On 13, Dec 2006, at 12:05 PM, Vic Peters wrote:



 	  Quote: 	
		   Hey all,

  

 I had a pro show me how to cover one of my H. Stabs.

 Very very helpful. So after he left I thought I'd get the hang of 

 passing the iron over it again. And ofcourse dumb ass that I am, I 

 bent a 7/8" tube. Don't remember the temp.

  

 The question is if it's that easy to bend a 7/8" tube what temperature 

 should I expect to get to on the smaller 5/16" surfaces?

  

 Anyone?

 Happy Ho Ho

  

 Vic

 912 Extra

 Maine

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Dec 13, 2006 9:46 am Post subject: Covering temp

Keeping in mind that I am no expert, You should most likely  talk to Jim and Dondi Miller

  

 Aircraft  Tech Support- Jim and Dondi Miller- 614 877 3334

  

 I  just covered my Firestar and my understanding is that the max you should shrink  it is to 350 degrees. I don't believe that the fabric reacts to a higher temp  favorably. It is also my understanding that when shrunk to the maximum it  reduces the tendency of the fabric to react to temps. Now to actually  be able to shrink it to the max it cannot be pulled excessively tight when  gluing it on the framework. The book and VCR that I have shows it just draped  over the framework with the wrinkles pulled out. I did that and I had no  distortion that concerned me when we hit it with the iron in all the heat  ranges. When we finished it the temps were in the high 90's and at 8 degrees it  is still the same. My "guess" is that done in the fashion that your "Pro" did  it, when it is cold the fabric will be tight, and when it gets hot it may  well be a little loose. The temp ranges for the fabric is 225 - 250-300-350. It  is not supposed to shrink any more after 350. 

 For  what it is worth

 Larry,  Oregon 

 [quote]   From:    Vic    Peters (vicsvinyl(at)verizon.net) 

   To: Kolb list (kolb-list(at)matronics.com) 

   Sent: Wednesday, December 13, 2006 10:05    AM

   Subject: Covering temp

   



   Hey all,

    

   I had a pro show me how to cover one of my H.    Stabs.

   Very very helpful. So after he left I thought I'd get    the hang of passing the iron over it again. And ofcourse dumb ass that I am, I    bent a 7/8" tube. Don't remember the temp.

    

   The question is if it's that easy to bend a 7/8" tube    what temperature should I expect to get to on the smaller 5/16"    surfaces?

    

   Anyone?

   Happy Ho Ho

    

   Vic

   912 Extra

   Maine

 	  Quote: 	
		  



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href="http://www.matronics.com/contribution">http://www.matronics.com/chref="http://www.matronics.com/Navigator?Kolb-List">http://www.matronics.com/Navigator?Kolb-List



	
[b]

John Hauck

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

Posted: Wed Dec 13, 2006 10:03 am Post subject: Covering temp

My "guess" is that done in the fashion that your "Pro" did it, when 

it is cold the fabric will be tight, and when it gets hot it may well 

be a little loose.  Larry

Larry:



I may be wrong, but thought the fabric tension would relax in extreme 

cold, rather than heat, if not properly heat shrunk.



Ain't got time to check it out in the book right now.



john h

mkIII

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

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Dec 13, 2006 10:06 am Post subject: Covering temp

[quote] ---

WillUribe(at)aol.com
Guest

Posted: Wed Dec 13, 2006 10:18 am Post subject: Covering temp

Hi  Vic, 

  

I ordered the Kolb  Covering Video from RR Aircraft Supply Co. (616) 683-2594 for  $23.95. 

RR is no longer in  business but maybe Kolb or  Aircraft  Tech Support is now selling this video. 

http://www.aircrafttechsupport.com/ 

  

  

From:  owner-kolb-list-server(at)matronics.com  [mailto:owner-kolb-list-server(at)matronics.com] On Behalf Of Vic  Peters

Sent: Wednesday, December 13, 2006 10:05 AM

To: Kolb  list

Subject: Covering temp 

  

The question is if it's that easy to  bend a 7/8" tube what temperature should I expect to get to on the smaller 5/16"  surfaces?

  [quote][b]

ElleryWeld(at)aol.com
Guest

Posted: Wed Dec 13, 2006 10:29 am Post subject: Covering temp

I used an infrared digital thermometer to calibrate My Iron and I haven't had any problems bending tubing but you wont want to shrink the fabric as tight on your ailerons or you will bend them all to crap 

 

         Ellery

 Vic call me any time for help 

 do not archive    [quote][b]

lcottrell

Joined: 29 May 2006
Posts: 1494
Location: Jordan Valley, Or

Posted: Wed Dec 13, 2006 10:32 am Post subject: Covering temp

I personally am a bit confused by it as well, but! Every thing from steel to 

flesh  shrinks when cold and grows when hot. My earlier suggestion of 

contact with Jim and Dondi still holds. We can only give guesses and 

warnings. They have the facts.

Larry, Oregon



do not archive

---

NeilsenRM(at)comcast.net
Guest

Posted: Wed Dec 13, 2006 12:01 pm Post subject: Covering temp

Vic

  

 Yes you want to calibrate your iron using a good  thermometer using a heat transfer paste, marking the iron with those  calibrated temps. There are all kinds of trick techniques to get the fabric just  loose enough when glued on to be fully tight but not too tight at 350 degrees  but that takes way too much trial and error for most of us. Just glue the  fabric on best you can then heat it up in very small increments all over the  part till it is tight then stop. The smaller parts will need to be glued up  more snugly than say the wings. The wings can be glued very very loose  because there is so much area for shrinkage. If you listen very carefully  you may be able to hear the structure starting to complain just before it bends  (at least I was told to listen for it). You will find that there are small  places where the fabric will need additional heat to shrink out any wrinkles. If  the wrinkles are in an area where there are multiple layers of fabric it will  take more heat and those over metal may even require more than  even 350 degrees. If you find that you need more than 350 degrees over  metal be very careful to not heat it any longer than absolutely necessary. I  found that the fabric can be shrunk up tight with out any wrinkles by spending  some additional time with the iron no matter how many thumbs you had when you  glued on the fabric. This was what I found to be the most fun part of the  build.

  

 Hope this helps

  

 Rick Neilsen

 Redrive VW powered MKIIIc

 [quote]   ---

planecrazzzy
Guest

Posted: Wed Dec 13, 2006 2:23 pm Post subject: Re: Covering temp

Start at 200 degrees ( infra red heat sensor gun )



 Iron the whole surface ....both sides....



 Bump temp 25 degrees , Iron whole surface again ( repeat )

 Shrink the small stuff til it starts to distort it....(They won't make it to 350)



  The Wings will go all the way to 350 degrees....

 any hotter and the fabric will loose it's tauntness....That's not good...

 Ask Jim & Dondi is the best advise....

                       Gotta Fly...

                                       Mike in MN



 PS  Do the wings last , that way you already have alot of practice...

 (Don't forget to protect the fabric from sharp edges)

.

.

.

.

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