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Old Jan 20, 2006, 06:52 PM
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Granger,IN
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Got to work on the plane a little bit more. Here is what I got so far.
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Old Jan 25, 2006, 11:15 AM
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United States, CA, Bakersfield
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Quote:
Originally Posted by rmerk
Hi,

i am the "Designer" of the Puddle Twin II.

Is there any chance you would be willing to post a version of these plans in .dxf or .dwg format? Your pdf defaults to a size bigger than the plotter I have access to at work. I'm more interested in the larger of the two versions and it would be much easier to plot from AutoCAD than trying to plot from the .pdf file.
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Old Jan 26, 2006, 08:58 AM
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Augsburg Muehlhausn, Germany
Joined Jul 2003
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Hi,

no problem, please send me your email address. I will convert it.

@Figure9: Nice! Which power setup do you plan to use?

Greetings, Roland
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Old Jan 26, 2006, 09:26 AM
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Granger,IN
Joined Oct 2001
148 Posts
I have 2 BP21's with 8X6 props. For batteries, I'm not sure if I want to use lipos or NiMh. I think the NiMh would be more durable since there is a chance they might get wet. The raw airframe right now is about 450g. I have the motor sticks mounted in the pods, and all surfaces are hinged. My next task is to add the controls for the ailerons. Not sure if I should use 2 sperate servos, or just one in the middle of the wing. This has been a fun project, thanks for the plans.
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Old Jan 27, 2006, 08:09 AM
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Augsburg Muehlhausn, Germany
Joined Jul 2003
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Hi,

i use 2 lightweight servos for each aileron because i don't like torquerods. A big drawback is you need a powerful BEC to power 4 servos.

It is very nice to see what other people built with my plans. So thanks for the Photos!

Greetings, Roland
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Old Jan 30, 2006, 09:18 AM
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Granger,IN
Joined Oct 2001
148 Posts
I'm sure this has been covered before, but can I run both BP21's with one Kontronic Smile 40-12-6 esc? I think the BEC is good for 2A, but I'm not sure it would work on a twin. Has anyone ever tried this with this ESC?
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Old Feb 03, 2006, 08:28 AM
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Cleveland Cuyahoga, Ohio, United States
Joined Dec 2000
401 Posts
NO!
Each Brushless motor need its own Controller!
Trying to run one controller on two brushless will destroy the controller.
This has been well docutemented, Do a search here.
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Old Feb 24, 2006, 08:03 PM
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Granger,IN
Joined Oct 2001
148 Posts
Puddle Twin

Almost done! Thanks for all the input. I'm using 2 ESC's and a ParkBec. Ran the motors this evening, and seemed to have plenty of thrust. 1250g RTF with 2 3s 2600 lipo's. Now all I need is some water, (warm water).
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Old Feb 28, 2006, 05:37 AM
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Augsburg Muehlhausn, Germany
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Hi,

very nice

Did you already maiden it?


Greetings, Roland
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Old Feb 28, 2006, 06:26 AM
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Granger,IN
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148 Posts
Xl

No, not yet. I still need to add the wing floats. I hope this weekend I'll have some time to go out to the lake.
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Old Mar 18, 2006, 07:18 PM
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Granger,IN
Joined Oct 2001
148 Posts
Well, I guess you can call this a maiden flight. I went out to the side yard just to see if had enough power to pull through the grass. I powered it up and it started skipping on through the empty 1/2 acre lot next to us. Before I knew it, she was in the air. I made 2 passes then landed because my knees were shaking so bad. Just in that short flight I could tell this is going to be fun. I need to get to some water.
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Old Mar 23, 2006, 06:39 AM
IWC
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How will we know when that kit is ready? Very cool!
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Old Mar 23, 2006, 06:14 PM
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Athens, Tennessee
Joined Jun 2003
505 Posts
Do you have any more build pictures to share. I am getting ready to cut mine out tonight.
Thanks
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Old Mar 23, 2006, 08:09 PM
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Granger,IN
Joined Oct 2001
148 Posts
No, I didn't take anymore pictures, but here are a few pointers:
Cut the top half of the wing a little wider because of the curve of the wing profile.

For the wing spar, I used a carbon arrow shaft imbedded in 3 layers of fff.

On the trailing edge, I sanded the last 1.5" to half thickness, so that when you fold the wing over, the trailing edge will not be so thick.

Before you glue the wing together, glue in some extra material where the wing floats get mounted.

Good Luck
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Old Mar 24, 2006, 06:55 AM
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Augsburg Muehlhausn, Germany
Joined Jul 2003
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Hello,

nice to hear your plane is maiden

I did not plan to kit this plane. But i am working on a CNC-mill (for a few years ). When i finish her anytime i can think about it to offer a kit...

Greetings, Roland
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