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Author Topic: P51D - EPP PSS  (Read 21554 times)

Fred

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P51D - EPP PSS
« on: March 30, 2008, 22:18:53 PM »
So, here we go again, but this time with something a bit more relaxing !  :D
I can't really stay long without building something, so this time, that will be a PSS !

This is a 1.20 mtrs full EPP PSS kit that we are selling at the shop (www.islandmodels.ie for those who don't know !  :P )..
Today, the baby left me free for 1 hour... Perfect time to go hiding in the worksop !

The kit :



First thing to do, is to give the diedrhal to the wing by sanding the wing root on a sheet of paper flat on the workbench. Easier to do it than explain !
then, everything is glued with PU glue, and the parts hold in place with tape.


I'm not going to tell you how to shape EPP, just to do it outside !  :wink:



Then, just to have a look, you can put everything together for the first time (the elevator/rudder in coroplast are just slotted together)



The wing spars are made of 6mm carbone tubes. Both are glued with PU glue in the slots already cutted in the wings. They don't like together in the middle, as this part will be glued to the fuselage, and that will be strong enough !

And a strip of tape is put on it, to stay flat when the PU expand.

The ailerons are made of profiled balsa. The first job to do is to trace them on the wings, then cut it with a razor blade.




And everything is held temporarely with tape.


Well, you can put everything together again and admire the plane that is taking shape !

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Fred

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P51D - EPP PSS
« Reply #1 on: March 30, 2008, 22:28:09 PM »
The wing is then entirely covered with reinforced tape.


My plan is to primer the plane before painting... That is not going to hold long in combat, but I can do a nice scale scheme the time it will last !  :D  :wink:


Next "big" job are the servos.
I'll put 3 on the plane.
2 for the ailerons, and one for the elevator (no rudder).
All the servos are standard size.

Lots of options are possible for the servos position. For my ailerons, I'm going to put the 2 servos flat on the top of the wing in the fuselage. Luckily enough, the 2 servos together are the exact width of the fuselage !

A bit of prep work, and you can start cutting !







The servos are then glued with cyano glue.
And that's it for today ! From the first cut to this stage, I spend 1 hour...

Tomorrow, I plan to do the elevator and to finish the covering !
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IceWind

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P51D - EPP PSS
« Reply #2 on: March 30, 2008, 23:30:37 PM »
Fred that is looking great!
Excellent job and within 1 hour! :)

I think i wanna have one of those! :)
My day today was joining balsa and gluing it. I'll post the photos soon!

Keep up the good work.
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Fred

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P51D - EPP PSS
« Reply #3 on: March 30, 2008, 23:43:56 PM »
Thanks Fernando !  :D
Well, 1 hr is easy with this kind of model !
I think I'll need another hour to finish it.. Plus at least another one for the paint and so on...  :D

And waiting for your photos !  :P  :P  :D
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Fred

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P51D - EPP PSS
« Reply #4 on: April 01, 2008, 08:48:18 AM »
A bit more work done yesterday evening...

Here is how to make an integrated articulation for the stab... 10 minutes of work !

First, trace the fuselage reference and the elevator on the coroplast



Cut the elevator, the perpendicular side first. I left a 2 mm gap to allow free movement once covered in tape



Now cut the elevator... The trick here is not to cut all the way through but just cut the upper "skin" of the coroplast coroplast ! Bend it several times to make it more smooth to the movement, and then, you can trim what is left of the "skin" with a razor blade.





Et voila ! No tape needed to do the hinge, and perfectly smooth elevator !


The "U" to assemble the 2 elevator is made from a scrap Bicycle spoke (I use them to do my pushrods...)



All glued with fluid cyano...
And the result :


All integrated to the elevator  :D
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Fred

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P51D - EPP PSS
« Reply #5 on: April 01, 2008, 08:52:28 AM »
For the radio, place the component on the fuselage side, and trace the contours with a pen (roughly). Do "canals" for the servos wires and the snake pushrod.





And everything is fitted inside. Everything will be invisible, except for the 2 servos harms for the ailerons...


I'm not sure yet, but I think I'll do an hatch with coroplast to allow me easy access to the radio.. Just in case !  :D

And that's it for now !
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Fred

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« Reply #6 on: April 06, 2008, 20:49:24 PM »
Well, after a little bit of work, the P51 is ready to fly !
Snow and low clouds today, so I spend my time doing the painting.
The model has been entirely sanded, then I have applied a layer of white primer.
Once dried, I sprayed the model with Silver...



Well, that's shiny !  :D

And I started to do the scheme I'm going for.. Starting with the blue, and painting the canopy.



Drying now !

Tomorrow, panel lines, invasion stripes and stars and stripes !
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Sean

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P51D - EPP PSS
« Reply #7 on: April 07, 2008, 19:33:29 PM »
Hey Fred,
Looks cool. Did you prime directly onto the reinforced tape? Any special fillers? or brands of primers?
Seán
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Fred

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P51D - EPP PSS
« Reply #8 on: April 07, 2008, 20:40:28 PM »
Hi Sean,
Welcome to the forum !  :D
Thanks for the comment on the P51 ! But looks much better in photos !  :oops:
Did the finishing really quickly !

I have sanded the tape until that go to the layer of fiber glass (reinforced tape). Then I have brushed a primer, relly basic one, in fact, the first one i found in homebase !  :wink:  :P  I'm sure you can find some primer special for plastic, but I was not going scale on that one, just practical !  :D
Then, the silver is sprayed(can), and the other colors are model paint.

Not sure that is going to hold.. We'll see !
That will be a god test !

But if you want to go more "good looking" and durable, I'll put some vinyl after I taped the entire plane.. Plastic finishing !  :D

So, here we go, ready to fly !
Just have to put back the aileron's pushrod and launch the thing !



 :oops:  Well, not great, but after all, this is made for combat !  :P

With the access hatch open :



Next, the flying ! Can't wait !

Who is up for a fight ??  :D  :D
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Sean

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P51D - EPP PSS
« Reply #9 on: April 07, 2008, 21:41:40 PM »
That looks great now. All in a few hours???
Can't see my 109 being built as quick, and as for a fight, i'll have enough problems keeping it in the air, without you knocking it down.
Thanks for the pictorial instructions in advance.

Seán
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Fred

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P51D - EPP PSS
« Reply #10 on: April 12, 2008, 13:11:38 PM »
Hi all,
Just back from the slope, where the P51 has made is maiden flight !
Not that windy, but launch anyway (EPP... don't break, that help !).. Well, perfect !
A bit up at the elevator, and that's it !  :D
Fly fast, but can be almost stopped in the air using a bit of down aileron (great to have 2 servos here !)... Did a bit of aerobatics and all is performing well, as far as you can go without rudder...
No problem to find lift is the relatively poor conditions too  :D
Well, really happy !
Had to stop due to the rain coming, so I hope tomorrow the weather will be better on the rain front to have another go and test the thing more !  :D

Hopefully, photos and videos tomorrow !
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Ron

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P51D - EPP PSS
« Reply #11 on: April 12, 2008, 15:36:51 PM »
That P51 looks really good Fred :D

And so easy/quick to build. Well for you anyway :lol:

Is that the 1.2m or the 1.8m?
I'm quite tempted by it myself. But the AlfaJet looks good too, except that it might be even faster, and that pointed nose  :?:  Asking for a losing dual with the ground.
What do you think Fred?

Ron
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Fred

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« Reply #12 on: April 12, 2008, 19:27:47 PM »
Hi Ron,

Thanks for the P51 !  :D
This is the "small" one (1.2mtrs).
I was mostly surprise that a big wind was not needed to fly ! But I have to admit that the 2 servos for the ailerons is a real plus, but having the ailerons down was not required in today's wind, but that mean I can fly it in even less wind  :D  I'll have to try !

For the AlphaJet, I don't really know.. It's just a bit more tricky to build, but I think the flight will be more or less the same as the P51. The profile on the AlphaJet is a RG15, a polyvalent profile.

After that, I don't really know, more a question of taste  :wink:

You will certainly see it fly in Cork, that will give you an idea !  :D
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Sean

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Congrats!
« Reply #13 on: April 12, 2008, 22:32:26 PM »
Glad to hear it flew so well! Can't wait to see it in action, or the video?

Seán :roll:
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Peter

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« Reply #14 on: April 13, 2008, 19:54:01 PM »
Glad to hear the P51 went well. Must have just missed you at the slope. Flew from about 1.00 pm yesterday.  Surprisingly good flying for a couple of hours with big storms going by to North and South.  Couple of lads flying a combat wing (Rory and Peter) - anyone know what channel 35.840 is?  Couldn't find it on my channel list?
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