First time float flying off water. - RC Groups
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May 10, 2007, 09:53 AM
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CooHead's Avatar

First time float flying off water.

Just got back from the golf coarse down the street.
I put GWS floats on the Dandy with Sport for winter flying. Was fun to taxi and take-off and land on the snow covered field across the street...but it was cold.

Finally had a chance (warm and calm) to try it off water.
So Cool!
The plane tracks nice and straight with no water rudder. As it gets up to speed the splashing changes. Pull back and airborn Looks neat to see the trail of watter dripping off the tail of the floats and splashing back to the pond.
I had to do at least a dozen take-offs and landings. Tried on T&G, but it really rubs off speed as the floats touch and they kinda submerged. No problem, no damage, no tipping over. Just really neat.

The MM Dandy with Sport wing on it is pretty mellow. I like it better with GT wing on it. But the Sport wing is bigger and can lift better. WIth the floats on it makes for some excitement from a mellow flyer. I will definatly go back down there and do that again.
The floats are also a nice base for my bottle rocket launcher. Again, something neat to do with a sedate flyer.

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May 10, 2007, 10:05 AM
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CooHead's Avatar
Yea, that one is a bit more than a "bottle rocket"

The true bottle rockets are neat to launch. They go where you point them and all, just a mellow little bottle rocket with a small light smoke trail. So I figured, what the heck, try an Estes rocket engine taped onto a stick.

It shot off the plane WAY more inpressivly (sp?). But it's thrust was a bit much for my light duty launch rack. As you can see, it's all balsa and held together with servo tape and duct tape and sevo screws. When the Estes rocket took off, it's thrust wiped all the launch rack off the floats. No problem, just landed (in the snow) with everything dangeling.

FYI. I did this over 100 acres of snow covered farm field. I know what I'm doing. Please save your typing if you are thinking of posting how terrible and dangerous and non AMA approved launching a bottle rocket (or Estes rocket) from a plane can be.
Me and my boys launch bottle rockets and Estes rockets all the time. It's not a big deal. Please don't post here about how it could be a big deal. Thank you.

May 10, 2007, 11:30 AM
Obviously I'm a "Minus Member"
buzzltyr's Avatar
Nice flight report on the Dandy on floats, Coo. Knowing that those floats weigh 4-5 oz, I'm guessing you still had plenty of oomph. Although I'm sure it made the Dandy Sport a little quicker.

As to bottle rockets, well, if its fun and keeps the kids entertained while you fly, who cares?

I'm currently looking at a set of the Multiplex Mini Mag floats for my SmoothE. They look about the right size, and are a little lighter than the GWS ones.

May 10, 2007, 12:01 PM
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CooHead's Avatar
Yea, I could tell it had floats on it

I've read where people put floats on and are amazed at how little they effect the flight charecteristics?! I don't know how that could be. They are certainly added weight. They substantially increase drag. I think they somehow have an effect on lift too as there is some surface to them. Hanging way down there like that makes for hard inverted. For me, I noticed it had the floats on there, no dought. It didn't make the Dandy unflyable, just noticable added weight and drag.

I think my CG might be a bit back. I do have 1/2 ounce added to the nose as it would climb whilst inverted and can't reposition anything any further forward (that is with the wheels on it). But now with the floats, more weight farther back. It's just that I can't do a good inverted flight CG check. When I do go upside down, it does want to climb, so must be rear CG. But it's alright and flys fine like this.

Don't do much with it other than take-off, fly a circuit around and come back in for water landing.

But that is pretty fun. The guy cutting the lawn at the golf coarse gave me a big thumbs up on it.

May 10, 2007, 01:28 PM
zbrubaker's Avatar
Hey may want to change the angle of the floats - tip the front of the floats up more. I can only judge by looking at your pic, but I'd guess the floats would be pointing down as you're coming in for a T & G which would cause them to 'dig' in.

The bottle rocket launcher sounds like fun. I wish I had a spot to do something like that. As to the AMA issue, it only applies to AMA sanctioned events and AMA sactioned flying sites.
May 10, 2007, 02:17 PM
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theKM's Avatar
Originally Posted by zbrubaker
Hey may want to change the angle of the floats - tip the front of the floats up more. I can only judge by looking at your pic, but I'd guess the floats would be pointing down as you're coming in for a T & G which would cause them to 'dig' in.

The bottle rocket launcher sounds like fun. I wish I had a spot to do something like that. As to the AMA issue, it only applies to AMA sanctioned events and AMA sactioned flying sites.
isn't it more about AMA insurance?... if you cause damage to property while firing incendiaries from your plane, I don't think the AMA will help out.

Water flying rocks though! Welcome to the party Coo.
May 10, 2007, 02:56 PM
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CooHead's Avatar
I am going to try to tweak it now that I see how much fun it is. I really have not been so enamoured with a small, light, 100watt plane in so long as I am after this morning's float flying.
It'll be easu to adjust the angle of attach of the floats by jut repositioning the rear support bar. Move it farther back and the tips will come up. I'll try that. But it really does fly and take-off and land great how it is.
Everything I did was LAR engineering. I'm sure there are some serious calcualtions about where the step of the floats should be and width of the floats and incidence. But I either got real lucky on my LAR placement, or it's not supper critical for a little E R/C plane.

I'm not AMA.
I don't fly at AMA approved sites (well, I did a couple times when I was AMA).
I have over 100 acreas of crops across the's not AMA sanctioned.
I don't think the AMA would ever condone and support an event that includes firing rockets...

May 10, 2007, 03:05 PM
zbrubaker's Avatar
That's a slick little setup coo...nice and simple. I can just imagine an F-4U swooping down and firing rockets on an enemy emplacement. I suppose if you had the servo on a flap knob, you could rig something to fire multiple rockets individually.
May 10, 2007, 03:26 PM
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CooHead's Avatar
Little 9v battery is enough to fire the Estes rocket ignighter. Fires it right away.
I thought the same thing...and did it, just don't have pics. Put two straw "rocket tubes" with a rocket in each. Aligator clipped each to their own servo screw through the servo arm. Togel the TX switch one way and it fired the one rocket, then togelled the swtich the other way and fired the other rocket.

Kind of hard to type and explain, but you got the idea....Had a battery of two rockets I could fire at will, not simultaniously.
Let it be know, all my rocket work was in the winter off the snow covered crop field. Was no problem to take off from the snow with the added weight of the 9v, the HS55, some wire and alligator clips and rockets and straw launch tubes.
I can't really do this off water Everything would get wet.
That said, the Dandy does ROG with the floats. Hard parkinglot type ground it'll skid along until it gains enough speed to lift off. Not a lot of directional control though. Makes a bad scrapping noise. Wears off the keel of the floats...but it does work so I could remount the rocket launcher and use it in the summer if I wanted to.

But I'm likeing the spalsh down flying right now thank you.

We are having a big deal fly-in at the golf coarse on July 7th. It's for kid's cancer research. "baldrickie" is the benificiary. We will be doing many AP and candy drop sorties. That is not the time or place to launch rockets. It will be a good time and place and audience to take off and land on the pond on the 8th fairway.

We are lucky to get to fly off a golf coarse


May 10, 2007, 03:33 PM
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CooHead's Avatar
Here is the only pic I have of the last time we met at the golf coarse for a fly-in. The kids take turns going out to retrieve planes with us.

I'll take more pics next time so I can show off what a nice set up it is for R/C flying. So many nice trees, yet plenty of open space and REALLY nice and smooth grass. The Club house is right behind our flight line so can get a drink or snacks or burger anytime. Can go inside to get out of the sun. A 1/2 dozen wall outlets for chargers. Real nice set up.

Anybody and everybody is welcome to join us on Juky 7th. AMA not needed. Laurie will be driving the beer cart. Bonfire at dusk.

May 10, 2007, 03:47 PM
Pickin' an a Flyin'
Wufnu's Avatar
Firing rockets, beer carts, brother you know how to live.
May 10, 2007, 04:08 PM
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CooHead's Avatar
Well, I don't drink much...maybe 20 or so beers (Guniess) a year.

The GC has an open invite for Laurie and her friend to drive the beer cart for any and every golf outing. They make some pretty good tips all dressed up and bouncing across the cart path selling warm, flat, spilled beers

But it is nice to fly at such a nice setting. My factory parkinglot is good enough for me, but when we put on a gathering, we like to have something better than bakeing blacktop to stand around.
May 10, 2007, 04:37 PM
Retardedly intelligent
foam and tape's Avatar
cool rocket launcher you should try that wth a saturn missle launcher it is in a square configuration and has 25 shots it would be sweet. each rocket is the size of your avrege bottle rocket. you might need a bigger plane
May 10, 2007, 05:53 PM
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CooHead's Avatar
OMG, awesome idea!
Easy to lite just the one wick.
But that square cardboard rack of rockets weighs a bit. Plus, once they are going off, no stopping them. Wonder if the constant force of each rocket coming out would in turn make "an equal and oppossite reaction"/force and have an influence on the plane's flight?

Maybe start a little smaller than 25 shot bottle rockets
Maybe get a bigger plane
Definatly wait until winter again
May 10, 2007, 06:36 PM
Pickin' an a Flyin'
Wufnu's Avatar
If you can cut the holes out of the back of the box there wouldn't be any back thrust.

If your Estarter is brushless (say BP21/12) and you're running on 3 cells, it should haul those up no problem.

Shoot video!


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