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Old Apr 12, 2011, 09:20 AM
Did ya'll see that?!?
Tony A.'s Avatar
Elizabethtown, NC
Joined Mar 2009
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Has anyone had any success adding rudders to the 100% F14. When I was flying my new one Saturday I caught myself trying to use rudder several times and could not quite figure out why it wasn't working...
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Old Apr 12, 2011, 09:43 AM
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birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
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I suppose you could hide a couple of small servos inside the
engine ducts on either side.


Then again, with the advent of all the new tiny Metal Gear Servos
I'm also wondering if a servo on EACH wing wouldnt work to
eliminate the hassle and trouble of the wing linkage set up.

just thinkin out loud, at quat4r to 8 AM :-)

Bob
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Old Apr 12, 2011, 09:48 AM
Shut up and talk to me!!
Manila
Joined Aug 2006
286 Posts
@alpea
thanks. Might try $tree boards that I have lying around here somewhere, I;m just not sure if the motor is enough when finished. What's you AUW? Pack size?

@tony

Happens all the time when I fly my mini profile jets after flying my full sized planes with full house controls.
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Old Apr 12, 2011, 09:52 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
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Dont have a good scale for AUW, Fly it on a 500ma 3s 20c
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Old Apr 12, 2011, 09:55 AM
Did ya'll see that?!?
Tony A.'s Avatar
Elizabethtown, NC
Joined Mar 2009
365 Posts
That's kind of what I was thinking, and maybe running some goldenrod or the like up to the rudders.
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Old Apr 12, 2011, 10:05 AM
Shut up and talk to me!!
Manila
Joined Aug 2006
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Quote:
Originally Posted by alpea 41 View Post
Dont have a good scale for AUW, Fly it on a 500ma 3s 20c
Yup might do what you did and use a 500mAh 20C. I also have a couple of 610s here that I use on the mini profile jets, probably try those also...

Printing the plans now....
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Old Apr 12, 2011, 11:10 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
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Dollar tree foam is usually 1/4" and floppy without the paper. The 75% is small enough to not worry too much about the floppy part. But the wings might need more stiffening . Maybe you could leave the paper on for the wings.
Whatever you do get busy taping those sheets together. And get it cut , and keep on glueing the pieces together. They are fun.And you can build em in a couple days if you stay on task.
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Old Apr 12, 2011, 11:36 AM
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Sausalito Marin Cty, California, United States
Joined Aug 2004
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Quote:
Originally Posted by ksqm View Post
Wab25, what ever servo you use for the swing wing, just make sure it has very good torque. It is suggested that you go with a METAL geared servo. The Dymond D37 is not, but it has tons of torque for it's size, 15.2 oz/in and weights in at 5g.
Ksqm
This may be a newbie question, but in terms of scratch building planes, this will be my second... Anyway, why does the sweep servo need so much torque? To overcome friction in the wing joints? To overcome the weight of the wings? To overcome the force applied in flight?

The servo I was looking at, gives over 2 oz/in of torque, which seems very little. But, my target AUW is 1 oz. My other thought is that at the slow speed I am targeting, will it still need the same amount of torque?
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Old Apr 12, 2011, 11:51 AM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
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U R the guy using P Z U M equipment? Getting those wings to swing esp. underload with one of those U M linear little servos would be a challenge.
Oh there are no NEWB questions.
But there are OLD FART answers.
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Old Apr 12, 2011, 12:05 PM
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Sausalito Marin Cty, California, United States
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Quote:
Originally Posted by alpea 41 View Post
U R the guy using P Z U M equipment? Getting those wings to swing esp. underload with one of those U M linear little servos would be a challenge.
Oh there are no NEWB questions.
But there are OLD FART answers.
Hopefully, I am the PZ UM in the F-14 guy... Where does the load come from? Friction? Plane weight? Airspeed? ...?
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Old Apr 12, 2011, 12:16 PM
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alpea 41's Avatar
United States, CA, Chino
Joined Oct 2007
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Yeah . FRiction and loading of the wings increases it. I've had a J R retract servo stall on a big 130% Shumate F-14. Only by slowing down nose up did the wings come forward.
But the best one was when taking off it rolled off the asphault road dragged the right wing tip on the dirt breaking the ply control horn . It took off with one wing extended and one wing swept back. That one was an "adventure" . I kept it under control yelled for my son to hit the retract sw. to retract the left wing . Saved it and landed with the wings swept back. Now there's an OLD FART answer.lol
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Old Apr 13, 2011, 08:36 AM
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Hampton, VA
Joined Mar 2009
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Vid

Here's a vid of the Half-Pint. It gives you an idea of the size of the plane and how it flies. I still need to do sanding, possible a decal set, and still lose 5-10 grams. Less weight, higher top end speed.

You may want to go full screen with the vid if you can. My camera girl didn't do much with the zoom, as it's busted. Need to get a real video camera now. More to come.

DSCN0859.MOV (3 min 7 sec)


Ksqm
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Old Apr 13, 2011, 09:02 AM
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alpea 41's Avatar
United States, CA, Chino
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Nice job ksqm. And great video. Zoom only causes trouble .
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Old Apr 13, 2011, 10:12 AM
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birdofplay's Avatar
United States, IN, Indianapolis
Joined Dec 2005
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Thats a quick lil nipper !

I dunno why but I was expecting the 50% to be floaty and slow. wrong !

Nice job.

bob
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Old Apr 13, 2011, 09:51 PM
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Hampton, VA
Joined Mar 2009
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Hey BOP,

Half-Pints can scoot too!!!. I have not done any sanding at all yet. So I expect a bit more performance once I do. I actually had her up in 5-10 mph winds today. A real hand full with wings swept, but unswept no problem.

Alpea 41,

Thanks for viewing the vid. Once I get her dressed up, I'll post another vid.

Ksqm
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