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Old Nov 26, 2008, 07:33 AM
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Best way to apply monokote

Hi, I'm new and need an easy way to cover a nexstar with monokote. Problem is it is all round.
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Old Nov 26, 2008, 09:02 AM
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Use the RCGroups search engine to find threads about MonoKote. There's enough answers already given to get you a new covering for the Nexstar. Actually, the instructions on the MonoKote rolls are good enough. Just buy the covering and read their instructions.
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Old Nov 26, 2008, 12:07 PM
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Take a look at the Monokote Instruction Video. It is very helpful.
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Old Nov 26, 2008, 08:31 PM
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I searched before, and didn't find anything specific to applying monokote to balsa.
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Old Nov 26, 2008, 08:40 PM
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It is really not that hard. Make sure that you have a good iron and a blow dryer. Because Monokote shrinks when you apply heat, it is pretty forgiving. Be careful because too much heat and you will burn holes in it. Take your time and practice. If you belong to a club, I am sure that you will find a never ending supply of opinions and tips!
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Old Nov 27, 2008, 01:48 AM
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Quote:
Originally Posted by lucasavaitor
I searched before, and didn't find anything specific to applying monokote to balsa.
http://www3.towerhobbies.com/cgi-bin...?&I=LXKSB4&P=7
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Old Nov 27, 2008, 09:15 AM
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don't know bout you guys, but I prefer ultracote. easier around curves, and shrinks better.
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Old Nov 27, 2008, 09:21 AM
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Quote:
Originally Posted by my c210
don't know bout you guys, but I prefer ultracote. easier around curves, and shrinks better.
I agree 100%. Unfortunatly, my LHS only carries Monokote, so I have to order Ultracote when I need it.
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Old Dec 09, 2008, 12:41 PM
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I used white monokote for all of my nexstar. Its pretty nice, but some spots have permanent wrinkles, despite popping air bubbles. Pretty good for a first try though!
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Old Dec 09, 2008, 12:53 PM
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what is the general technique for covering complex curves? Heat and stretch?
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Old Dec 09, 2008, 02:52 PM
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bwalt, I PAINT complex curves! Plastic covering is the DEVIL to get to stick to inside curves . I'm sure someone will have a better answer.
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Old Dec 09, 2008, 03:41 PM
Zor
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Stretching plastic covering in concave areas ! ! !

Quote:
Originally Posted by jim_ag3y
bwalt, I PAINT complex curves! Plastic covering is the DEVIL to get to stick to inside curves . I'm sure someone will have a better answer.
Hello Jim and all readers,

I have recently trying to find what happens or how to handle stretching plastic covering in concave areas. I am not getting anywhere fast.

I even questioned the nature of the glue used on these plastic sheetings.
I have never used them for coverng my airplanes so I am quite ignorant and have some questions.

Do I undestand properly that a layer has to be peeled off ?
YES ... or ... NO (please delete the inappropriate word).

If the answer is YES, is the glue aleady sticky (like a post it label) ?
YES ... or ... NO (please delete the inappropriate word).

I understand at this time that the above line answer has to be NO if we can stretch it in contact with the surface or structure but I will welcome an answer.

I think we know that the glue is affected by heat and that heat has to be applied in order to get sufficient adherance.
RIGHT or WRONG (please delete the inappropriate word).

Now we have a high camber wing and the under surface (bottom surface of the wing) is concave.

How do we make the stretching plastic follow the concave shape where only a line near the leading edge and the trailing edge can touch a straight edge (ruler, anything straight).

Would not the heating pull the surface to a flat surface ? and loose that camber of the airfoil ?

Yes, when I was at school some of my teachers hated some of my questions for an obvious reason. They did not know the answer. So in electrical and electronic classes, having studied all that stuff already by myself, I was studying aviation, aerodynamics, meteorology, air regulations, aircraft engines with manuals hidden on my knees below my desk .

I have not change a bit .

Any one with a moment to respond ?

Would be highly appreciated although not remunerative, I am broke .

Thanks folks and Merry X'mas.

Zor
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Old Dec 09, 2008, 05:09 PM
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Do I undestand properly that a layer has to be peeled off ?
YES (please delete the inappropriate word).


If the answer is YES, is the glue aleady sticky (like a post it label) ?
NO (please delete the inappropriate word).

I understand at this time that the above line answer has to be NO if we can stretch it in contact with the surface or structure but I will welcome an answer.

I think we know that the glue is affected by heat and that heat has to be applied in order to get sufficient adherance.
RIGHT

I wasnt talking about concave surfaces, I was talking about convex. But in anycase for concave, what I would try to do for an undercambered wing is to lay the covering so that it is laying against the surface as much as possible. Then tack it down around the edges. Normally you would hit it with a heat gun but that would just pull it away from the concave surface. So, I would try tacking it in a semi random pattern all over the concave surface using the lowest possible heat that gets it to stick. You wouldnt be able to slide the iron because that would probably make wrinkles. Once its all stuck, then do the same again with higher heat to really stick it down.
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Old Dec 10, 2008, 12:26 AM
Zor
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Hi bwalt822,

Thank you very much for your response.

My concern was that, not knowing how well that glue on the plastic really adheres I was afraid that on final heating and stetching it would pull out the adhernce to the bottom of the ribs.

Enjoy the Xmas season,

Zor
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Old Dec 10, 2008, 12:54 AM
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it is possible that it would pull loose but if its already stuck down then the tension will be along the surface of the skin if the wing is sheeted which means there is no out of plane force to pull the covering up. It may distort the wing shape though. I'm not sure how it would work across ribs that weren't sheeted. It would probably be ok for a fairly shallow concave surface.

And FYI, this is all purely my speculation because I have never tried covering a concave surface with monokote.
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