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Float Planes Discuss float planes here...or any other aircraft that floats.

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Old 10-18-2009, 12:26 PM   #1
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Seamaster ?

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I recently acquired a seamaster, does anyone have some time on one of these. What should I look for? Does it require any mods? Does it have any weak spots? How about the bottom, should it be epoxied? Does it need added bracing? I would really appreciate your help.

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Old 10-18-2009, 12:38 PM   #2
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Re: Seamaster ?

I would start by throwing out the nylon connecting rods, or at least epoxy them together. Seal the radio compartment with diluted epoxy and also silicone the wing saddle. The easiest way to do that is by running a bead of silicone down the wing saddle and wrapping the wing in saran wrap and put it in place until the silicone sets. Also find some heavy duty velcro for the floats or epoxy them on.
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Old 10-18-2009, 12:48 PM   #3
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Re: Seamaster ?

I knew I posted on this before. here is my posts from another site:

I don't think you really need anything else. If I were to build mine over again, I wouldn't have used the plastic rods that came with it. I epoxied my hinges. Make sure you pin them too! I had to "drill" with a precision screwdriver in the middle of nowhere and whittle down a stick to pin my rudder. Use diluted epoxy to seal up the radio compartment. make a silicone wing saddle, otherwise water will get in it. reseal/epoxy the tail section of the plane before attaching the rudder. mine had a big leak there. I also resealed all the monocote overlaps with clear nailpolish (make sure it's not acetone based)


thanks for the great tips!!! what do you use for pins in the hinges? what size prop do you use for a .46? "

I use those round toothpicks. The hinges I got were plastic with the holes already through them. I like a MA 11x5 the best on my TT Pro .46. It will get you off the water pretty quick. A couple of things I forgot: If you insist on using the velcro to hold the floats on, don't use the stuff that comes with it, and use a lot of it!! I was working afternoons and was leaving for cottage country the next morning. Test flying after I put all my gear back in it (had it out for one of my combat planes) test flew on a small local pond, could only take off in a strong cross wind, skipped on takeoff, lost a float........when you land with one float, do not get off the step, keep your speed up or you will make a very quick U turn! Couldn't retrieve my float because it blew to the other side of the pond that was edged with an electric fence. Was up until 2AM after work making a new one. I never put on the bottom keel either. that way you can skip around on the water (also a good way to lose a float) to make the wing sadlle, I wrap the center of the wing with saran wrap, run a very small bead of silicone on the wing saddle, bolt the wing on and then caulk all the way around it, then let it dry. Makes a perfect seal. The Seamaster will also handle 2-3 foot waves, with my engine/prop. Good luck!
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Old 10-18-2009, 07:04 PM   #4
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Re: Seamaster ?

I'm currently in the process of resurrecting mine after hiding it, (most recently beside my desk in my office) for over 20+ years. Powered with a Fox 50 and it would rip off the water. Loved the quick-change main gear installation and have tried to mimic it on some of the other projects.

Don't know of the references made earlier, but I found the cable type elevator control more than adequate and had the floats that attached with the nylon "L" brackets. Never lost one. All my models used the more thermally stable version nyrods, so never had any trim problems. As for sealing the radio/servo compartment, I used the thin adhesive foam seal and never found water in there. I also did waterproof the entire airframe.

As for weaknesses, the one thing I did notice while pulling the covering off was the horizontal tail seemed a bit wimpier than I remembered. Intend on adding some C/F strips to make it a bit more rigid.

Only real pointer I can make is to keep the weight down. I had silk and doped mine, then primed and painted it. Way too heavy and it had a tendency to drop a wing in a high-speed stall. Finally dunked it and tore the covering.

Weighed it as I worked my way down to the wood and the plane lost over 2 pounds!
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