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Old Dec 13, 2012, 01:31 PM
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United States, IN, Indianapolis
Joined Dec 2005
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I never fail to be amazed by the creativity found in the model airplane hobby.

If I was on a tighter budget I'd be doing exactly the same shopping.
Not braggin, I just get my depron at a slight discount and I have lots of it around.
Plus, I used to live 30 miles from "shopping" and now that I am closer to many outlets,
it's a traffic nightmare to head to town.

Merry Christmas,

Bob
Hoosier Cutout Service.
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Old Dec 13, 2012, 06:20 PM
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150 mile house B.C. Canada
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Quote:
Originally Posted by AlfaXray1 View Post
Go online print out a Hobby Lobby (Not the internaional one but just plain Hobby Lobby) coupon for 40% off and they sell Midwest 5mm depron you get 2 sheets of 11.5"x47" for about $7.00 with the coupon. That is where I have been getting all my foam and it is fine for the same application as 6mm. Usually it takes 2 packages for most planes. So they are $14 airplanes.
you can make the same plane out of Modelplanefoam for around $4.00 .
16 sheets for $65 shipped and there 24X48 . Thats 3 airplanes for the price of 1 ... your gonna need more motors
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Old Dec 16, 2012, 06:38 PM
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Thanks birdofplay..I could not find a reasonable cost source for depron until you posted your source's. Shipping was a major killer. RCFOAM charged more for shipping than the foam itself. I'm definately trying modelplanefoam.
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Old Dec 16, 2012, 07:26 PM
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United States, IN, Indianapolis
Joined Dec 2005
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I buy in QTYs so my shipping is not so bad.

You will like that stuff :-)

Bob
Hoosier Cutout Service
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Old Dec 17, 2012, 10:50 AM
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Well, it was rainy and cold over the weekend, so I decided to spend some time making it look nicer. I decided the use the decals and templates for the VF-84 Jolly Ranchers squadron. I wasn't going for absolute scale markings, I just wanted it to look better than plain white foam, and it does.

This morning was 40 degrees, overcast, and just a hint of breeze, so I gave in and decided to try the second maiden flight (if that's possible).

F 14 successful maiden flight (0 min 55 sec)


The video is of the initial flight which was short. I flew two more flights that were much longer, checking flight characteristics, stall, high-alpha, wing sweep, etc. I am very happy with the way this plane flies now that I have the CG farther forward!

I plan to build another one of these after I get some other projects out of the way, and I have some ideas for redesigning the swing-wing linkage so that it is more solid yet forgiving in the event you bump a wing.

I'mahappywingnut!
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Old Dec 17, 2012, 11:14 AM
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United States, IN, Indianapolis
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Agreed re crappy Weather !

OK OK OK :-)))

Where IS your LIKE IT CG @ ?

Try measuring also from the TOP Inlets back as
everybody's NOSE may not be the same length anymore ;-}

we just wanna know :-)

Bob
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Old Dec 17, 2012, 12:20 PM
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I will measure it tonight when I get home and let you know the exact CG, but it is about 1" - 1.5" in front of the spar across the top cover.
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Old Dec 17, 2012, 01:50 PM
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United States, IN, Indianapolis
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Ok that's another good reference point too !

Also re Wing Swing.

There is a good bit of room IN the nacelles for a servo..

With all the NEW MG servos that have come out since 2007
when this thing was initially designed,
I've been meaning to try putting ONE servo on EACH wing
right under the Pivot point and program a MIX to get them
to work in tandem. NO mechanical linkage at all.

Has anyone tried this yet ?

Bob
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Old Dec 17, 2012, 01:58 PM
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I'm currently building Schumans F22, and finished his F15 last week. The F15 flys better than the F14's but doesn't have the high alpha capability of the F14's. The F-22 is being modified to twin ducted fan's so were getting a lot of experience building.

The weather is too crappy to fly so building is the primary experience at the moment.
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Old Dec 17, 2012, 02:13 PM
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United States, MI, Sodus Township
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Quote:
Originally Posted by birdofplay View Post
Also re Wing Swing.

There is a good bit of room IN the nacelles for a servo..

With all the NEW MG servos that have come out since 2007
when this thing was initially designed,
I've been meaning to try putting ONE servo on EACH wing
right under the Pivot point and program a MIX to get them
to work in tandem. NO mechanical linkage at all.

Has anyone tried this yet ?

Bob
I thought about that too, but my bigger concern is hitting a wing on something, even grabbing the grass on landing with the wings open. This puts a tremendous amount of torque directly back to the servo, and even the strongest metal gear servo would probably not take the punishment for long. This happened to me on the first maiden flight. One wing bumped one of the vehicles and stripped the servo gear. I admit it was not the highest quality servo, but it was metal-geared.

My thoughts were to linkage the wings together so they moved in sync, then drive one of the wings with some kind of elastic pull-pull set up from the servo. If one (or both) wings bumped something, they would both retract from the impact, but would only add a little strain to the servo through the elastic pull-pull system, thus saving the servo, and allowing the wing to move out of the way of the offending object, saving the wing as well.

I'll play with the idea when I get time, but if someone else wants to take the idea and run with it, feel free.
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Old Dec 17, 2012, 02:53 PM
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I found that this lands so nice and slow that catching a wing really shouldnt be a concern . Worst case the wings out full elevator power off landing is an easy default . I would think the 2 servo idea would work well .
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Old Dec 17, 2012, 03:19 PM
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It does do a nice wings out Harrier or Pancake.

Bob
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Old Dec 17, 2012, 11:28 PM
Life-abstract=conformity
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BTW Bob,
Do I understand you recently relocated to Indianapolis IN. ?
Wanted to ask, what's a Hoosier?
And do you know what Gary IN. is like?
Skies
Jay.
P.S. Just gave your link to some 'Sonic Liner' fanatics re: cutting some parts/kits. Keep us informed.
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Old Dec 18, 2012, 05:22 AM
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Hoosier

Quote:
Originally Posted by AirBornOne View Post
BTW Bob,
Do I understand you recently relocated to Indianapolis IN. ?
Wanted to ask, what's a Hoosier?
And do you know what Gary IN. is like?
Skies
Jay.
P.S. Just gave your link to some 'Sonic Liner' fanatics re: cutting some parts/kits. Keep us informed.
Hoosier is a person who lives in Indiana. Most states just use their name (Georgian, Virginian, Texan, etc.) but Indiana uses Hoosier. Just a little trivia.
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Old Dec 18, 2012, 07:30 AM
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From what I have seen of Gary, IN driving through a few times. It is a very poor, industrial looking area. I was not impressed. Defenantly NOT the cute little song from the "Music Man".
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