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Old 12-21-2008, 09:01 AM   #1
dag214
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Default 257" B-36D Scratch build.

Hello all,
This plane build is on other forums, but had a bunch of people say it needs a thread here.

This plane has been in design for over 10 years, first designed it in CAD, then 3D. She will have 6 hackers and be turning 6 20/14 props, the weight will be 85 pounds.


I will post more info later.

Thanks, DAG
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Last edited by dag214; 12-21-2008 at 09:18 AM.
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Old 12-21-2008, 09:23 AM   #2
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Default Re: 257" B-36D Scratch build.

Pics of my main gear design.
I started the design 10 years ago with the intent of it be 257" with 6 gas engines, but after doing all the calcs I realized that the plane would weigh over 110 pounds because I would need 45 pounds of ballast to off-set the engines weight at the trialing edge of the wing. Now with electric motors I can build a 257" B-36D and hit about 85 pounds. I have drawn the entire plane in both 3D max, and AutoCAD so I can scale the drawings to any size I need. The plane will have 6 Hacker Motors turning Zinger 3 blade 20" props, in testing I get about 8 minutes at full power and 15 at 65% cruise power. I have printed out all of my plans on my plotter and have been cutting wood for about 2 months. I have been using Ecalc and it looks to be spot on with what I am seeing in testing.

DAG
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Old 12-21-2008, 09:34 AM   #3
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Default Re: 257" B-36D Scratch build.

dag,

I'm subscribed!

More more....

Go Go

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Old 12-21-2008, 09:50 AM   #4
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Default Re: 257" B-36D Scratch build.

The B-36 will being in 7 parts to get her out of the house and to the field.

DAG
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Old 12-21-2008, 10:02 AM   #5
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Default Re: 257" B-36D Scratch build.

All I can say is WOW!

Great job!
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Old 12-21-2008, 10:03 AM   #6
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Old 12-21-2008, 10:09 AM   #7
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Default Re: 257" B-36D Scratch build.

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Old 12-21-2008, 10:15 AM   #8
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Default Re: 257" B-36D Scratch build.

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Old 12-21-2008, 10:48 AM   #9
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Default Re: 257" B-36D Scratch build.

DAG,
Great looking bird! You're doing the Air Force proud! I suppose we have to get you signed up for the Mac Hodges school for aerobatic bomber pilots real soon!
WT
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Old 12-21-2008, 11:07 AM   #10
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Default Re: 257" B-36D Scratch build.

Thanks for the great comments,
I hope I don't get into spins, and inverted flight much. However, I am designing a dropping system so I can drop 66 fake 500 pounders, or one of the MK17 nukes. I just startedthe construction of this plane in October and plan on having it in the air by June. The fact I spent so long designing this bird in 3D is the reason it is going together so fast, it is building like a big fat Goldberg kit.

The plane will have 12 batteries for the motor, 2 each 4 cell 5100Mha per motor, 3 RX with 2 each 123 batteries each, 3 batteries for the 3 retracts, and 30 servos.

A few more pics. My son is holding a few parts.

And I have been asked many times, I wish I had a laser cutter, but this is all hand cut.

DAG
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Old 12-21-2008, 11:47 AM   #11
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Default Re: 257" B-36D Scratch build.

very very nice work manshp keep it up
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Old 12-21-2008, 11:52 AM   #12
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Default Re: 257" B-36D Scratch build.

I just inadvertently ... WET MY PANTS!
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Old 12-21-2008, 12:05 PM   #13
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Default Re: 257" B-36D Scratch build.

My hats off to you.. Nice!
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Old 12-22-2008, 06:26 AM   #14
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Default Re: 257" B-36D Scratch build.

Here are pics of me putting the carbon fiber on the spars. The plane will be sheeted with 3/32 balsa, then glassed with .5Oz cloth.

DAG
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Old 12-22-2008, 07:44 AM   #15
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