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Old Sep 24, 2009, 10:08 PM
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Any 1/2 planes designed for water???

Any suggestions?

Thanks,
Marc
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Old Sep 24, 2009, 11:35 PM
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Lots of them. There are kits out there that would be just fine for 049, and the magazine plan services list quite a few. I think the old "Lil Doozy" is still available; looks like a flying shoe, but it works fine.
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Old Sep 25, 2009, 08:06 AM
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Thanks T. Is there a particular site that you like to look for 1/2A's?
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Old Sep 25, 2009, 11:22 AM
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I remember putting floats on some 1/2a planes in the past. I would hand launch and then land in the water dead stick. No throttle, just aileron and elevator or rudder and elevator.
Is is about the closest one left around right now, but it uses a .10 engine.
http://www3.towerhobbies.com/cgi-bin...?&I=LXAGD2&P=0
now there are some electric float planes, and some of those may be convertable to 1/2a engines.
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Old Sep 25, 2009, 11:36 AM
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Thanks for the ideas! I found this one too! Looks real cool.

https://www.quicktechhobby.com/Airpl.../aqua_star.htm
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Old Sep 25, 2009, 12:07 PM
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You might look in the Sticky thread at the top of the 1/2A form called "1/2A Sources"
LT
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Old Sep 26, 2009, 07:14 PM
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Thankyou! I'll check it out.
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Old Sep 26, 2009, 07:33 PM
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You could also poke through RCM Plans' seaplanes section. Several of those are 1/2 A to .15 size. You could also do a search for anything Ken Willard designed. It seems he had a thing for waterborne aircraft and the smaller engines.

James
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Old Sep 26, 2009, 11:58 PM
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Yeah, Willard had a LOT of interesting designs over the years, apparently the all worked really well...
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Old Oct 22, 2009, 02:05 AM
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http://i7.photobucket.com/albums/y25...7/102_1704.jpg
http://i7.photobucket.com/albums/y25...7/102_1708.jpg
Ken Willards Drake (free flight) converted to 3 channel RC.
Plan here:
http://www.unclewilliesplans.com/about24.html
and a very nice version here with ailerons in place of rudder:
http://www.rcgroups.com/forums/attac...mentid=2774816

Oh so sweeettt!
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Old Oct 22, 2009, 09:01 AM
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Cool! Thanks!
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Old Oct 24, 2009, 03:34 PM
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I suggest the Herr Aqua Star as mentioned above. I did mine with some really small servos in the wing panels to operate tip floats. It looks really cool to come in over the water and drop them down just before landing.


Floats down
http://subarubrat.com/misc/seaplane.jpg

Floats up

http://subarubrat.com/misc/seaplane1.jpg
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Old Oct 25, 2009, 09:22 AM
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wow! That looks really cool! Do the plans show how to do that??

Thanks,
Marc
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Old Oct 25, 2009, 10:52 AM
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Quote:
Originally Posted by marc9129
wow! That looks really cool! Do the plans show how to do that??

Thanks,
Marc
Marc, before you get all starry eyed about those floats- They don't retact themselves into the wing like retractable landing gear does. Here is a link to a picture that you can see the rubber bands on the wing holding the wing floats in place as shown on the plan.
http://www.tcrconline.com/photos/fal...ua%20Star.html
and another: http://www.rcgroups.com/gallery/showphoto.php?photo=520
LT
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Old Oct 25, 2009, 11:54 AM
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As lightthings pointed out the Auqa Star does not come with that feature, the stock floats rubber band on. My tip floats are a modification and they do retract up and become part of the wing.

All I did was take some balsa and make tips that matched the wing shape. I notched them for a 1/16th sheet of light ply about an inch wide and long enough to put them at the right height in the water. I then fit it up against the end of the wing and notched the ribs as needed and then put a small balsa block on the rib where the end of pontoon strut fell and used a regular control surface hinge to allow the tip float to fold up into the wing.

I installed two of the really small cox servos (any small servo is plenty) and linked them with a pushrod. You hit the toggle and the floats snap down, hit them again and the floats snap up.

If I did it again I would do two things differently.

1. I used 1/2 x 1/2in balsa blocks as I recall. I would make the floats a wee bit bigger, they could use just a bit more floatation, it works but more would be nice.

2. I did not seal the float bay for weight. This only bit me once when the wind put the tip into the water. Sheet it in thin balsa and paint it.

The floats make no measureable difference in speed or handeling, so they are just a cosmetic gadget. But when the plane is coming in on final and the floats pop down it is a really cool gadget.

Oh and most of all. A friend who built an auqa star pointed out that you need full length chines or the thing submarines on you. I don't know if they changed the kit but if you look at mine and Lightthings second image of the red one you can see what to do.
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