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Dec 12, 2002, 08:41 PM
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drbird's Avatar
You'd be suprised at the strength once the covering is added but Hector did have an excellent idea of adding a 1/8" stringer "left-over" to the trailing edge of them.

John
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Dec 12, 2002, 09:22 PM
I fly Army UAVs!
Kwesdog's Avatar
Foam, I believe Pval said something about the tailerons earlier in the thread and adding strip of lite ply to the trailing edge and to where the servo connects to the taileron.

Harry
Dec 12, 2002, 09:35 PM
Dale Lindsay
I just can't wait to see someone's plane fly!
Dec 12, 2002, 09:44 PM
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drbird's Avatar
I think Phil has his to that point and should be flying very soon!


John
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Dec 12, 2002, 09:48 PM
Dale Lindsay
That's cool! I am sort of in the same boat as him. Ice hit us the other day and we're still trying to get power to STAY on and the roads to thaw out!

Looking forward to the vid!
Dec 13, 2002, 10:46 PM
Registered User

Progress Pictures


Hi,
Here is a picture of the trailing edge. I added sheet-rock tape to it before the paint. This way the trailing edge will be a bit stronger. Also, I painted the foam with water base paint. It works great and is quick.
Dec 13, 2002, 10:50 PM
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Picture of the wings painted


Here is a picture of the painted winds:
Dec 13, 2002, 10:55 PM
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drbird's Avatar
Wow that paint job came out really well!! The stuff I use tends to mold and form to much to any informities in foam.


John
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Dec 13, 2002, 10:55 PM
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Picture of the F-4 tail cone finish


Tail cone finish and covered
Dec 13, 2002, 11:02 PM
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F-4 almost ready to fly picture


Here is a picture of the F-4 almost ready to fly
Dec 13, 2002, 11:08 PM
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drbird's Avatar
First Rate Covering job!!! Looks outstanding!

John
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Dec 13, 2002, 11:11 PM
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F-4 Ready to fly!!! finally


Here is the picture of the F-4 ready to fly!! The plane is hanging from a lamp...
Dec 13, 2002, 11:11 PM
Registered User

agreed!


I was thinking the same thing!

I finished covering my bird last night and there is no way I am posting pics! LoL. Sure its my first covering job, but I'm still not making it public Please tell me the normal thicker stuff is easier to work with! I used the RA Micro stuff suggested in the plans and after 5hrs I was about to trash the whole plane till I discovered that my iron wasn't hot enough for proper shrinkage.

Pilatus, if I ship mine to you will you cover it for me!
Dec 13, 2002, 11:14 PM
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drbird's Avatar
I recieved this e-mail today from another builder:

I've got it [CG] at 12 3/4" from the back of F1. And that's with the wing placed so that the LE lines up with the LE you have on your plans.

I also double checked it using the method on this page:

http://www.nsrca.org/technical/tip_tricks/mac_cg.htm

and it came out to the same spot which is a nice confirmation.



I have recieved many e-mails reagarding the placement of the CG. Some have it farther back but most have it farther forward then it shows on the plans. I think for most you may want to move the CG up more as this e-mail has suggested. If you find the CG to be far forward at least you have the option to land safely but if it is too far back given your setup then you will do a back flip and inevitably crash. Anyways this is just my two cents but better safe then sorry!

John
http://www.aerc.biz
http://www.rc-plans.com
Last edited by drbird; Dec 13, 2002 at 11:18 PM.
Dec 13, 2002, 11:17 PM
Registered User

F-4 weight and battery location


Here is a picture showing the location of the battery. I am using a NiCad 6 cells 550 mah. for the first fly to keep the weight down.

The final weight of the plane is 11 7/8 oz. with battery and without canopy.


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