Home › Forums › Free Flight › Construction Tips & Tricks › Tissue Vs. Mylar in humid conditions
- This topic has 10 replies, 6 voices, and was last updated 6 years, 5 months ago by
gstew.
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AuthorPosts
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07/02/2016 at 6:17 pm #77456
DENNIS KARGOL
ParticipantWhat is everyone using for covering? I remember back in the 60’s and 70’s everyone used tissue for covering. Tissue sags terribly in the midwest humid mornings. Any better products to use for these conditions?
07/03/2016 at 3:56 pm #77460Glenn Schneider
Participant07/04/2016 at 7:49 pm #77481DENNIS KARGOL
ParticipantThanks Glenn, Where can I obtain the newer light weight polyspan? Never used polyspan before.
07/04/2016 at 11:44 pm #77482Glenn Schneider
ParticipantDennis, My supplier has been Mike Woodhouse from England. He bought a “batch” from the manufacturer somewhere on the continent. A batch was 2000 meters! I bought 100 meters from him and have been selling it in 10 foot batches to my friends and clubmates for $15.00 or $1.50 a foot ( approx my cost). The material is one meter wide. If you happen to be going to the Nats, I’ll be there with the goods. Let me know if you want me to hold some for you. Polyspan is a non woven polyester, it comes in any color you want as long as it is white. It looks like silkspan. You apply it with dope applied through it onto the frame, then given a coat of dope, then shrunk with a monokote iron. Water has no effect on it. A favorite of mine is to then cover it with tissue which gives color and much added stiffness. I’ve even done a 1/2A like that with minimal weight penalty. Very tough and completely waterproof. Regular polyspan is a bit heavier, much tighter and works well by itself. color can be applied with dyed dope sprayed on. USA suppliers include FAI Supply, Larry Davidson, Campbell used to have it, so Retro RC should. Good stuff, try it you’ll like it. Thermals, Glenn
07/06/2016 at 8:10 pm #77498DENNIS KARGOL
ParticipantHi Glenn,
Would really like to try some. But I can’t make it to the NATS this year. Any way you would send some?07/09/2016 at 3:51 pm #77506Glenn Schneider
ParticipantDennis, Let me know how much you want. My usual batch has been ten feet X one meter for $15.00. If that works for you, I’ll get a postage quote from the post office. Thermals, Glenn
07/10/2016 at 3:53 pm #77508Dean McGinnes
ParticipantYou also might investigate tissue over mylar. Really good for 1/2A. Generally lighter than tissue alone as much less dope, usually 2 coats of 20% – 25% dope/thinner. I’ve used it on my 250 Satellite. 1/4 mil mylar. On bigger models 1/2mil mylar would be better. I haven’t been on the forum much as of late, but you can find much info on the technique by searching this forum. It’s really easy to do.
07/13/2016 at 7:18 pm #77523Glenn Schneider
ParticipantDennis, Don’t know how to send a PM on this new website. Contact me at gtodds@sbcglobal.net re the polyspan. Thermals, Glenn
07/21/2016 at 5:31 pm #77543Rudy Kluiber
ParticipantHey Glenn
I’ll be at Muncie for the Nat’s. Would like to get some of that new lite
Weight poly.
See you at the field.Thanks
Rudy Kluiber
07/22/2016 at 7:56 am #77545Mike Schwartz
ParticipantGlenn Bob DeShields and I would like to get 4 packages of the new lite weight polyspan and 2 packages of the regular weight polyspan. We would like to get it from you at the NWFFC in Tangent this August.
Thanks
09/04/2016 at 9:11 am #77857gstew
ParticipantDean and others,
If doing tissue over mylar, what are recommended mylar adhesives and application techniques?
Also, how many coats of what dope over the tissue and how best to fuel-proof it?
TIA!
Greg in Mississippi
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