Seaplanes Aircraft that typically take off and land on water...radio control seaplane discussions are in here.

Seaplane pictures

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Old 11-05-2009, 02:50 PM
  #426
eyeofra1678
 
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Default RE: Seaplane pictures

multienjim that last pic looks life like nice job and nice pic
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Old 11-19-2009, 02:21 AM
  #427
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Default RE: Seaplane pictures



More pics I just got from the perris float fly . happy landings. Jim

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Old 11-19-2009, 06:10 AM
  #428
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Default RE: Seaplane pictures

Here's my OT EP Playboy on floats. Uses floats from; www.seaplanesupply.com. Flies great and lands slow.
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Old 11-29-2009, 11:03 AM
  #429
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Default RE: Seaplane pictures

Here is my four star 120 on floats!
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Old 12-04-2009, 11:29 AM
  #430
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Default RE: Seaplane pictures

I tried float flying once...
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Old 12-04-2009, 11:50 AM
  #431
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Default RE: Seaplane pictures

Nice plane, rough water and a classic stall as a result, that camera and camerman are good, thanks for sharing.
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Old 12-04-2009, 12:00 PM
  #432
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Default RE: Seaplane pictures

A little bit of left rudder would have gone a long way. That plane really needs coordinated turns to roll effectively. I hope you were able to recover enough of the plane to rebuild.
Don
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Old 12-04-2009, 12:27 PM
  #433
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Default RE: Seaplane pictures

It is easy to be a Monday morning quarterback, and I suspect you already know what went wrong. It's clearly shown in the second photo.

You used full up elevator to get the plane off the rough water ASAP. OK, but you didn't really have flying speed, so you needed to immediately level the plane and let it gain speed before attempting to climb. The second photo shows the airplane in a fully developed stall with the elevator held full up. From that point the pilot was simply "along for the ride".

I suspect that the airplane survived and hope that you have, or will try float flying again under better conditions. I also congratulate the photog. Those are GREAT photos.

Jim

Edited for spelling.
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Old 12-05-2009, 12:16 PM
  #434
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Thanks Guys, Yep...I was too excited to get in the air and had the elevator back to get going on the rough waves....I forgot I had so much elevator and it shot off the water and in the air before I knew what happened. Lost the windshield, prop, spinner and a wing strut....other than that it will be ready very quickly to go again. I won't give up...watching the planes fly around the lake, touch and goes off the water....doesn't get any better!
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Old 12-05-2009, 01:02 PM
  #435
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Default RE: Seaplane pictures

Same thing happened to another guy at our Fun Fly meet. He drained it and did it right the second time. It was a maiden flight, and that can happen easily with 20 guys watching.

Enjoy:
http://www.youtube.com/watch?v=4gdyqKJnHco
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Old 12-12-2009, 04:29 PM
  #436
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Default RE: Seaplane pictures

Hello
Nice plane
I am just getting started in the hobbie. I have a slow stick that I have put GWS floats on. It is not beautiful like your plane but it sure is fun. I fly on Whitefish Lake which is just north of Lake Rosseau. I was wondering if I could come and watch you fly sometime. I know the lakes are a little hard right now but maybe next summer.
John
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Old 12-13-2009, 09:41 AM
  #437
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Default RE: Seaplane pictures

Quote:
ORIGINAL: Jerryballs

I tried float flying once...
Jerry,
I hate to tell you this, but

I built a Great Planes Decathlon (same color scheme btw)with Goldberg floats years ago, it never flew well with the floats

I suspect it was the full symmetrical wing fighting the floats,
That wing needed so much rotation angle that it was always fighting the floats, I could never get it to trim out and if I pulled up or down to quick the floats took over and pitched it up or down violently.

It finially augured in in a death spiral, hit the ground, but actually flew again,,,, without the floats


good luck
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Old 12-24-2009, 11:33 PM
  #438
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Default RE: Seaplane pictures

that marlin is nice,great job!
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Old 12-29-2009, 03:28 AM
  #439
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Default RE: Seaplane pictures

heres my alpha 40 trainer on floats flies like a dream
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Old 01-17-2010, 09:02 AM
  #440
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Default RE: Seaplane pictures

Here is my 5 wheel cub.
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Old 01-17-2010, 12:09 PM
  #441
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Default RE: Seaplane pictures

Cardiac Flier ~ NICE job on that one! Here is the start of my 1:8 scale Dornier Do-24T Hope to have her done for this years Lake Havasu Float it. She will be electric.
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Old 01-17-2010, 02:22 PM
  #442
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Default RE: Seaplane pictures

If you have to yank any plane to get it off the water regardless of wing type, you put your floats on wrong.
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Old 01-17-2010, 04:22 PM
  #443
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Default RE: Seaplane pictures

Cowboy,
those float are definitely wrong,,
you should always have some negative incidence floats to the wing,,, never a flying wedge like that plane appears to have
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Old 01-17-2010, 05:05 PM
  #444
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Default RE: Seaplane pictures

To be more precise, you should always set the zero lift angle of attack of the wing positive to the top of the floats. However, the zero lift angle of attack of a flat bottom wing is somewhere around 4 degrees negative, so the most effective incidence between a flat bottom wing and the floats is usually between zero and minus two degrees.

Although Cowboy's setup looks pretty extreme in the photos, it obviously gets off the water OK.

Jim
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Old 01-17-2010, 06:12 PM
  #445
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Default RE: Seaplane pictures

Gettng off the water easy and flying correctly are two different things
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Old 01-17-2010, 07:07 PM
  #446
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Default RE: Seaplane pictures

Seems to fly OK also. I don't see any significant elevator correction in the flying shot.

How about it Cowboy. Are you having any problems with your setup?

Jim
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Old 01-17-2010, 11:07 PM
  #447
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Default RE: Seaplane pictures

He's only holding full elevator in that last shot

Typical problem would be pitch sensitive at higher speeds
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Old 01-18-2010, 01:03 PM
  #448
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Default RE: Seaplane pictures

For best flight performance the floats need to be level when the airplane is flying at cruise speed. Any deviation, positive or negetive, will create excessive lift/drag which can result in the pitch sensitivity you mentioned. Proper float setup is a compromise between on-water performance and in-flight performance. Factors to be considered include airfoil, wing loading, power, desired flight performance, expected water conditions, and many more. The best setup is different for every airplane.

Quote:
ORIGINAL: scale only 4 me

Cowboy,
those float are definitely wrong,,
you should always have some negative incidence floats to the wing,,, never a flying wedge like that plane appears to have
A blanket statement like that is misleading at best.

Enough. We have hijacked this great thread, and I, for one, would like to turn it back over to the builders of these outstanding seaplanes.
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Old 01-18-2010, 02:01 PM
  #449
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Default RE: Seaplane pictures

Not one problem. Looks can be deceiving, on the "extreme angle", because it's not. Floats are level to the stab.

I have 1 degree positive incidence on the wing when the floats are at perfect level. The floats where set up perfectly level to the horizontal stab, then the step directly under the CG using a plumb line. We made the struts about an inch taller than needed, but no worries there. I didn't have to change the elevator trim from flying with wheels to flying with floats, or the other way around, since I can change it up in about 5 minutes either way.

They are Sea Commander 38" gull wing floats. KMP Husky, OS 120 pump ( I fly at 5000 feet so it's like a 91 at sea level), 15X7 3 blade prop, Electrodynamics remote glow, Futaba 3004 servos, JR 770 receiver.

In the 3rd picture I am just giving it power to take off, so you see a lot of up elevator. As soon as it begins to get up on step I let off the elevator.

It will go all the way across the lake at full speed without lifting off without flaps. When I get to speed to take off, all I have to do is tap the elevator and it climbs out nice and easy (no flaps). If I use take off flaps (around 15 degrees), it will lift off at about the same speed without elevator input at pretty much the same angle as using a tap of elevator with no flaps. Landings are smooth as glass flaps or not, just a little faster without flaps. Sets perfectly on the floats, and sticks every time. No water rudder, so I use the up elevator on taxi and take off to help with the rudder control.

I have to contribute the setup to Cublover. The guy sure knows his float setups. I had heard stories about having to yank airplanes off the water, and he showed me how to set it up without having to do that at all. It pretty much flies itself off the water. He said its simple. Right size floats, floats level to stab, CG directly in line with the step. Works great. He set up a Super Stick the same way and it works the same.

KMP Husky:
Wing Span.: 80in/2035mm
Wing Area.: 946sq in/61sq dm
Fuselage Length.: 53in/1350mm
Flying Weight.: 7-8 lbs.
Engine Spec.: .60 2 cycle or .91 4 cycle
Servo's Required.: 5 channels 8 servos
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Old 01-18-2010, 02:17 PM
  #450
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Sorry about getting off topic, just trying to help those who are looking at this and are thinking about a float plane with my experiences float flying.
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