Author Topic: Tapes  (Read 852 times)

Offline Peterross

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Tapes
« on: January 01, 2018, 08:41:52 AM »
Hi all

I am getting ready to cover, and will be using ~1.8 oz. dacron.
I see I can buy 2.7 oz. dacron peel ply surface tapes.
Is this required, or can I cut my own tapes using the lighter dacron?

Pete

Offline Tom XL-7

Re: Tapes
« Reply #1 on: January 05, 2018, 12:59:14 PM »
peel ply is dacron cloth. Just like "real" covering material.
It is sold to be used in composite fabrication.
I can pull an old aircraft spruce catalog where it will be listed in two different sections
As peel ply, and also as a lightweight covering material. Right there with the name brands.
Both sections have the same part number and price. The cloth is uncertified and intended for ultralights or other lightly loaded aircraft.
 As a peel ply, it is used with the intention of being removed. example:
We have a composite which will require additional layups or future epoxy to another item. 
We are done with the original layup and the last item while still "wet" is a layer of peel ply where called for.  After curing I can pull the peel ply off as the epoxy won't stick to it. It leaves behind a fabric patterned rough surface ready for future adhesion.  
 As a covering material, it acts just like the heavier coverings. Heat shrinks, paints glues the same process as the more expensive material.
http://www.aircraftspruce.com/catalog/cmpages/peelply3.php
Sure would have been easier to just link, but for a few years, they hid the covering aspect?

Offline Peterross

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Re: Tapes
« Reply #2 on: January 05, 2018, 09:10:15 PM »
My question really comes down to weight. Is using the 1.8 oz cut into strips heavy enough? I have a pinking cutter wheel and it cuts very effectively. I also have enough scrap material that it would be easy to make tapes and patches. 
I did see the peel ply, and they are 2.7 oz. Also, I saw they are meant to be removed, and was not aware they could be used just like normal tape.
So is the lighter material that I cut ok, or should I use the heavier tape? I don't mind buying the heavier tape, but thought using the scrap may be acceptable.

Offline Dan_

Re: Tapes
« Reply #3 on: January 07, 2018, 04:02:49 PM »
Here is an argument to use the same weight tapes as the cover fabric...

http://www.spava.com/Tapes.html


“A superior pilot uses his superior judgment to avoid situations which require the use of his superior skills.”

– Frank Borman, Apollo 8 Commander

Offline Tom XL-7

Re: Tapes
« Reply #4 on: January 07, 2018, 06:10:19 PM »
Wow 
Good piece of information there
Thanks for looking out for us all Dan
Tom XL-7

Offline Dan_

Re: Tapes
« Reply #5 on: January 07, 2018, 07:05:32 PM »
I hope it makes up for the 5 ounce sail cloth tape post that I sent in, but deleted...



“A superior pilot uses his superior judgment to avoid situations which require the use of his superior skills.”

– Frank Borman, Apollo 8 Commander