Monocote versus Ultracote - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-23-2003, 07:05 PM   #1
Claude Paradis
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Monocote versus Ultracote

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Open the can of _____! What's your preference?

I seem to like Ultracote better when putting it on. It is easier to work with.

However, I seem to like Monocote better for a longer lasting better finish. The monocote stays drum tight. The ultracote seems to losen up after awhile and requires a shot from the heat gun.

I've also used 21st Century. Looks nice, but my humble opinion is it to be a lower quality film. Scratches easily and isn't as strong as MC or UC.

Have you had similar experience??

Ohh, and by the way. The Ultracote "Plus" SUCKS big time.
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Old 05-23-2003, 08:20 PM   #2
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this post was done before here Claude - and on RCU. I think you will find a pretty even split with ultracote taking a bit more followers.

I myself have used both and prefer monokote over all film coverings since I started with my first roll of white in the early 1980's

I never have sagging issues either, or have to reshrink it after the winter. Never!
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Old 05-23-2003, 08:27 PM   #3
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I use ULTROCOTE only, every know and again I grab a rolls of mono and curse myself for doing so. I have a heck of a time trying to get mono to look good. BUT, That being said I used to work for the localk hobbystore for a few years. I feel that the market on a whole can't bear a poor product for very long and both have been around for many years. Sold more mono than ultra. I would sell the product as pick one that works for you and stick with it. We all have different prefferences.
TIP for Ultracoat users; Put a coat of nitrate dope down on the airframe before covering it. sand lightly. Then apply your ultra covering. Burnish it down while warm with a soft cloth. It will Never wrinkle, bubble, or shift. I have a couple planes that I fly regular and after 6-7 years. It looks like I just finished covering it last night.
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Old 06-03-2003, 12:21 PM   #4
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I also personally prefer ultracote, just becuase I find it a bit more flexible. Monokote seems to get brittle to me for some reason. The flexibility of ultracote makes it easier to go around curves, or to fix little errors you might make when putting the stuff on. However, I do find that the ultracote will sag a little bit through out a winter in a cold garage, but that is easily fixed with a heat gun. I have never had a problem with both products having their color fade over time, but maybe I just havn't noticed it, or had a plane last long enough for the stuf to fade.
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Old 07-29-2003, 09:02 AM   #5
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Monokote VS UltraCote

I too have used both products and I seem to prefer Ultracote as it seems more opaque and it has a lot more glue on it. In fact it's the best for putting over itself (or Monokote) since the adhesive melts at a much lower temp. Use just enough heat to melt the adhesive (peel up and look at it) and I go over it with a cotton sock or old tee shirt while still warm to really press it into the other film.
For Monokote I seal the wood (on sheeted surfaces) with thinned white glue prior to putting on the covering. I got this hint from RCM and it works great!
For Ultracote, I don't pre-seal.
Hope this helps!
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Old 07-29-2003, 09:38 AM   #6
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When I first started building planes way way back in 1991 I pretty much used Monocoat or Solartex coverings. Then I went to the hobby show in Toronto where a man from Goldberg Models was demoing Ultracote. I asked him about the differences between coverings. He showed me and then actually let me try it on his demo model.

I have been an avid fan of Ultracote ever since. First he showed me that you should allow extra covering to hold tight onto when applying it so that you can pull it tight to tack it BEFORE completely sealing it down. Some people don't pay too much attention to this detail because they feel that if there are wrinkles at this point, they can always use the heat gun to take them out......If you pull it as tight as you can before sealing it down and then use the heat gun, wrinkles and sagging are almost totally non exhistant even during extreme temperature changes.

Living in Northern Ontario at the time I also found that flying in the cold, if Monocote gets even a slight puncture when you land in a bit of rough, weeds or ice, that is shatters like glass and makes for a much more extensive patch or recovering job....Ultracote, on the other hand is much much more puncture resistant, and when it does only leaves a small wirnkled hole which can be shrunk out and easily patched.

Using the same stretching technique as above, using a glove and heat gun, holding tight to the Ultracote, and stretching it around curves, IE: wingtip, balsa cowel, etc, you can make it look like it was vac formed with plastic

Just one more thought on covering: I have seen even experienced builders skip the elbow grease when it comes to finish sanding a model. The smoother you sand and finish the balsa, the better the covering will stick. I sand all surfaces to 400 grit or better, At this state of finish the wood itself almost feels like glass. Also use a tac cloth to remove ALL the balsa dust. Take your time on overlaps and trim pieces of covering and you'll never get a bubble with Ultracote.

Didn't mean to be so long winded but IMHO Ultracote wins my vote hands down and always!!!!
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Old 07-30-2003, 06:19 AM   #7
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I have used Monokote since the late sixties and, like Andrew, prefer it over Ultracote. I also do not experience the sagging that many complain about. I will agree that Ultracote may go around curves alittle better but that is the only plus I see. IMO of course.
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Old 09-28-2003, 07:49 AM   #8
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I have had very good results with monokote. I use a tip I found in the RCM mag and it works great.I mix white elmers glue with water at a 50/50 mix and brush it on the plane before covering.It adds very little weight, hardens the wood and also helps the covering not wrinkle.
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