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Author Topic: new project - help wanted  (Read 1700 times)

Offline Wynn Robins

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new project - help wanted
« on: March 29, 2012, 05:25:53 PM »
OK - I just found a free flight plan for the XP-67 Moonbat - an I want to turn it into a stunt plane - looks too cool not to try at least.....  anyone want to help?

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Offline Randy Powell

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Re: new project - help wanted
« Reply #1 on: March 29, 2012, 05:26:43 PM »
You're a scary person, Wynn. Very scary.    LL~
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Offline Will Hinton

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Re: new project - help wanted
« Reply #2 on: March 29, 2012, 05:33:43 PM »
Are you thinking electric or IC?  From the top view the thing reminds me of my beloved F9F with twin recips!  Should be able to accomplish LOTS of lift throughout the nacelles and fillets.  Go for it!!
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Offline Tim Wescott

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Re: new project - help wanted
« Reply #3 on: March 29, 2012, 05:37:39 PM »
Help how?  With encouragement?  Go Wynn!

With advise?  In my humble opinion, you're going to have to make some serious compromises to reconcile flaps and that wing planform.  I'd be seriously tempted to keep the planform, and make the thing flapless.  Otherwise, increase the wing chord and span and shorten the nacelles to no longer than the end of the flaps.  Even then you'll have swept-forward flaps which I have no experience with, but which I've seen comments indicating that they're not all that cool in the wind.

Oh -- and thicken the airfoil, of course.  At least it's got a honkin' big tail already.
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The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Bill Little

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Re: new project - help wanted
« Reply #4 on: March 29, 2012, 05:44:35 PM »
Well Brother Wynn,  you have bit off quite a project there.  I agree with Tim, I don't have a clue as to how I would go about handling flaps.  Lots of area to stabilize turning and having the plane stop turning, a very wide fuselage section from plan view.  Not exactly sure how that would work.

But, otherwise, I would love to see you tackle it and cure the potential problems!  Electric or IC would both work as far as that goes, but with those nacelles you would have a lot of area to hide batteries, etc..

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Offline Avaiojet

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Re: new project - help wanted
« Reply #5 on: March 29, 2012, 06:04:44 PM »
Wynn,

Do you have plans or just that view?

Charles
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Offline PJ Rowland

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Re: new project - help wanted
« Reply #6 on: March 29, 2012, 06:11:17 PM »
Id be taking a proven twin design like windys twin, and making the appropriate asthetic chages to make it into this beast.
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Offline Bill Little

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Re: new project - help wanted
« Reply #7 on: March 29, 2012, 06:14:16 PM »
Quote from: PJ Rowland on March 29, 2012, 06:11:17 PM
Id be taking a proven twin design like windys twin, and making the appropriate asthetic chages to make it into this beast.

Windy's F7F would be a starting point, I guess.  But how to get those plans, I don't have a clue.

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Offline PJ Rowland

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Re: new project - help wanted
« Reply #8 on: March 29, 2012, 06:22:01 PM »
Its really only the asthetics that need changing, thats the key to any multiengine stunt project. - make it look like but design it like..

Bob Hunts Twin Im sure he has plans for.

There are plenty of good performing Twins out there : Gordon Delaney has a great one.. errr.. two, I mean one.
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Offline Avaiojet

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Re: new project - help wanted
« Reply #9 on: March 29, 2012, 06:29:49 PM »
Did someone say F7F?

I would have interest in a F7F.   n~

Charles
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Offline Wynn Robins

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Re: new project - help wanted
« Reply #10 on: March 29, 2012, 06:31:18 PM »
it will be electric for sure - yes I have a free flight plan - as mentioned-

I would love to get my hands on Windys plans - but like Bill said.... HOW??
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Offline Larry Wong

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Re: new project - help wanted
« Reply #11 on: March 29, 2012, 06:44:30 PM »
Wynn:  Back in the 1950's  in WAM a guy name Jack Barlow flew a XP-67 in scale it was a winner and had 2 K&B 29's  I started one but never finish , instead I built a F7F for C/L Scale I think with todays power plants I would go Electric this would keep the smooth lines of the wings and necceles ... #^ #^ #^
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Offline Avaiojet

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Re: new project - help wanted
« Reply #12 on: March 29, 2012, 08:08:24 PM »
Electric?

I don't know about that.

You may think so, but you don't have a great deal of lifting wing area.

Charles
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Amazing how ignorance can get in the way of the learning process.
If you're Trolled, you know you're doing something right.  Alpha Mike Foxtrot. "No one has ever made a difference by being like everyone else."  Marcus Cordeiro, The "Mark of Excellence," you will not be forgotten. "No amount of evidence will ever persuade an idiot."- Mark Twain. I look at the Forum as a place to contribute and make friends, some view it as a Realm where they could be King.   Proverb 11.9  "With his mouth the Godless destroys his neighbor..."  "Perhaps the greatest challenge in modeling is to build a competitive control line stunter that looks like a real airplane." David McCellan, 1980.

Offline Russell Shaffer

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Re: new project - help wanted
« Reply #13 on: March 29, 2012, 08:09:02 PM »
Don't need no stinking flaps.  Save a lot of trouble.
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Offline wwwarbird

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Re: new project - help wanted
« Reply #14 on: March 29, 2012, 08:45:36 PM »
 I've considered this one before and agree that it would make a super cool model. It would be a LOT of work to figure out and design though.

 Personally, I don't feel like any "standard" twin engine aircraft planforms are close enough to this design to offer a viable starting point. If I were to attack this one, I think I would imagine a top view of one of the flying "Stop Sign" or "Saucer" C/L models seen over the years (because they are simply a flying airfoil) and then "pull" and "stretch" that shape here and there like Silly Putty to get yourself in the ballpark with the overall shape. I would shoot for exact scale outlines while increasing the "wing" and stab/elevator outlines a bit. The model would then be built unlike any "normal" airplane, you would want to build as much of the overall structure as possible using airfoiled rib shapes front to rear. In a sense, think of building the earlier mentioned "Stop Sign" with small wings added to increase the span along with adding other necessary details. Lot's of work and head-scratching, but done right it would be very cool. y1

 ...and even cooler yet if it was nitro. VD~ ;D
« Last Edit: March 29, 2012, 09:02:39 PM by wwwarbird »
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Offline GregArdill

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Re: new project - help wanted
« Reply #15 on: March 29, 2012, 11:42:10 PM »
Make it electric, contra rotating motors, and use if for "Electric Speed" 8)

G
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