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Old May 22, 2015, 12:57 PM
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Be safe son - Fly low and slow
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Canada, ON, Lyn
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Question
First water plane

Hi guys:

I'm half way through the "Post pics of your float planes" thread and I'm keen to get a project underway.

- I want to build from scratch.
- I would like a boat type plane.
- I want it to be simple to build.
- I'm thinking 24" - 30" wingspan 3/800 battery and suitable motor.
- 4 channel

It needs to be "Disposable" because I'll be making all the usual mistakes(whatever they are)

I'm just looking for some rough guidance and Do's/Don'ts on the airframe.

Any help appreciated!
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Old May 23, 2015, 07:11 PM
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Letís eschew obfuscation.
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Mad_Mike,

Your "disposable" criteria suggests to me a foamie. You might want to check out the scratchbuilt foamies forum.

The answer to a question similar to yours is at http://www.rcgroups.com/forums/showthread.php?t=1915065. See if any of these meet your needs. I would also add to this list my own SlowBoat at http://www.rcgroups.com/forums/showthread.php?t=1864719, but you may need to add a bit of nose weight to get it to ballance with an 800mA battery (it's designed for 1350mA).

Scott
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Old May 23, 2015, 08:43 PM
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Im assuming you have some flight experience and are just migrating to the water?

My advice would be a Polaris as it satisfies almost all of your criteria. Its just a little bigger than specified.

Its a flying boat rather than a float plane
4 channel
Super stable and easy to fly providing you have a few hours under your belt
Scratchbuilt foamy with the build taking between 12 &18 hrs.
Free plans

What's not to love!?

There is an extensive build thread on the polaris. With all of the do's, dont's and tips you could ever want.
You could always build a 75% as many folks have done but the smaller it is the faster and less forgiving it becomes.
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Old May 24, 2015, 07:47 AM
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Be safe son - Fly low and slow
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Thanks guys.
That gives me lots to look at.

I've looked at the videos of your Slowboat Scott and like it a lot.
It's got a lot of parts though and I don't want to spend too much time on a disposable airplane.
I can fly fairly well but I still have the odd disaster.
The Slowboat might be my second waterplane, and I'll build it with the power system you specified.
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Old May 24, 2015, 05:17 PM
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Quote:
Originally Posted by Mad_Mike View Post
Thanks guys.
That gives me lots to look at.

I've looked at the videos of your Slowboat Scott and like it a lot.
It's got a lot of parts though and I don't want to spend too much time on a disposable airplane.
I can fly fairly well but I still have the odd disaster.
The Slowboat might be my second waterplane, and I'll build it with the power system you specified.
If I was going to build a flying boat - I would make it a high wing with twin motors , set up with differential thrust for yaw control on the water .

Puddle Star (4 min 21 sec)
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Old May 24, 2015, 05:36 PM
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If it flies - I want one!
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Not bad, that Puddle Star - with more power, more control authority and a better pilot, it could be quite a performer!
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Old May 24, 2015, 06:31 PM
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Originally Posted by Petem View Post
Not bad, that Puddle Star - with more power, more control authority and a better pilot, it could be quite a performer!
I've always been a fan of sarcasm !
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Old May 24, 2015, 06:56 PM
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Be safe son - Fly low and slow
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I've always been a fan of sarcasm !
Yeah, +1.

I'd love to be able to fly like that.
Not yet.

I really like the idea of dual motors for yaw but I just want the equivalent of a Giant Delta on a boat platform to see if I like water.
I don't want to spend much time building something we all know will get trashed.

The Slowboat is my favourite right now with the Polaris a VERY close second.
Both have lots of finicky parts though.

I just might put a styrofoam SM hull under the Giant Delta and see what happens!
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Old May 24, 2015, 09:34 PM
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Quote:
Originally Posted by Mad_Mike View Post
Yeah, +1.

I'd love to be able to fly like that.
Not yet.

I really like the idea of dual motors for yaw but I just want the equivalent of a Giant Delta on a boat platform to see if I like water.
I don't want to spend much time building something we all know will get trashed.

The Slowboat is my favourite right now with the Polaris a VERY close second.
Both have lots of finicky parts though.

I just might put a styrofoam SM hull under the Giant Delta and see what happens!
Probably the simplest plane to make for flying off water is the SnowBall - a NutBall with floats . I've seen these swim boards ( photo ) at the Dollar Tree Store - might be a good material to use .


Snowball on water pt1 (3 min 18 sec)
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Old May 24, 2015, 10:29 PM
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Quote:
Originally Posted by balsa or carbon View Post
Probably the simplest plane to make for flying off water is the SnowBall - a NutBall with floats . I've seen these swim boards ( photo ) at the Dollar Tree Store - might be a good material to use.
Good call B&C, it doesnt get much more simple and robust than that. Even depron would be plenty strong enough since water, although hard on electroncs, is a lot softer and more forgiving on the airframe.
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Old May 25, 2015, 08:12 AM
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Be safe son - Fly low and slow
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Originally Posted by balsa or carbon View Post
Probably the simplest plane to make for flying off water is the SnowBall - a NutBall with floats . I've seen these swim boards ( photo ) at the Dollar Tree Store - might be a good material to use .
Well, you've done it again Al!
As much as I dislike the arse dragging attitude of the Nutball, this looks to be what I'm looking for as a first waterplane.
I bet I can improve on it a bit to make it look more like an airplane and maybe get it to fly better.
I'll be checking out that Dollar tree foam floater too but I'd like to try some Depron.
I have lots of CF spars out of the old Bix3 since nobody bought it.
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Old May 25, 2015, 11:47 AM
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Quote:
Originally Posted by Mad_Mike View Post
Well, you've done it again Al!
As much as I dislike the arse dragging attitude of the Nutball, this looks to be what I'm looking for as a first waterplane.
I bet I can improve on it a bit to make it look more like an airplane and maybe get it to fly better.
I'll be checking out that Dollar tree foam floater too but I'd like to try some Depron.
I have lots of CF spars out of the old Bix3 since nobody bought it.
It's also been done with a delta - if the SnowBall is just too unbearable !

RC float plane flying (1 min 25 sec)
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Old May 25, 2015, 12:51 PM
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Be safe son - Fly low and slow
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It's also been done with a delta - if the SnowBall is just too unbearable !
Even better!
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Old May 25, 2015, 01:11 PM
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Even better!
I'll be waiting for the video !
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Old May 27, 2015, 04:02 PM
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How about the Judi Seajet. I just ordered a foam kit from birdofplay.
Thread with plans, kit cutting info, pictures and videos-
http://www.rcgroups.com/forums/showthread.php?t=2321902
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