fiberglassing ace seamaster - RCCanada - Canada Radio Controlled Hobby Forum
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Old 03-21-2011, 12:32 AM   #1
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fiberglassing ace seamaster

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looking for ideas on fiberglassing bottem how far to go up the sides & how to bring covering & glass together ? i am planning on using ultracote ! first time covering float plane. appreciate any ideas .thanks.
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Old 03-21-2011, 03:35 PM   #2
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Re: fiberglassing ace seamaster

What weight glass are you planning to use? Personally I have been working with 1/4oz cloth as the weave is tight. I apply as many layers as necessary to give me the strength I need.

There are some different methods of glassing that can take the place of epoxy and are lighter to boot. One is to lay the glass and basically spray a Water Based Poly Urethane paint in the colour you want to wet and penetrate the weave. This would likely take a few coats as once dry you would see a lot of reduction. Once a couple of coats are applied sand to remove any high fibers and then do as many coats as it takes to completely seal the weave and make it smooth.

Ontario Adhesives had a water based glassing compound at last years Toledo Show, but I have not seen it at the LHS yet or have any experience with it. It is made specifically for this type of job and the sample looked good and was incredibly light.

For the Seamaster I would glass only the bottom sheeting itself. That is what would take the most abuse and laminating up the sides would really only add weight. I did my Seamaster and Northstar this way, (I did replace the balsa bottom sheeting on the Northstar with lite ply). No glass, just painting the lower skins and doing the remainder of the airframes in Ultracote. The only modification was to prep the lower seam areas with Deluxe Cover Grip as it helps seal and bond where the covering ends. I think there are a few other brush on cover adhesives you can use to achieve the same result. Only warning is to try and keep the adhesive light as it can lump up under heating and will look a bit rough.

p.s. Only problem I found was the paint I used on the Northstar does not seem to be fuel proof.
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Old 03-21-2011, 04:03 PM   #3
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Re: fiberglassing ace seamaster


Maybe this will help

M.A.A.C. 75640
Hitec Aurora 9
LT-40 LT-60 Alpha-40 Tiger-60 (90 )
ARF P-51 40 TF-P51 Giant KIT
TopFite P-51 Giant ARF X 3
Hanger 9 SpitFire 60 ARF X2
TopFlite Elder-40 ( on the board )
Aero Works 540 T -60
The Ground came up and hit my plane
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