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Pica 1/5 Scale Mustang Build 2015

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Pica 1/5 Scale Mustang Build 2015

Old 05-27-2020, 05:03 PM
  #101  
7aso
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I remember painting mine In Behr's silver metallic which I got from Home Depot. It's been discontinued for a while now.



Old 05-31-2020, 06:34 PM
  #102  
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The plane looks good. The exhaust ? not so much. Take a look at a few pictures of the real plane to see how they should look
Old 06-02-2020, 03:30 PM
  #103  
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Well BobH, I guess you are right. I should have watched this a little closer. I had no instructions, but that's no excuse. I looked real hard at a fix. To remove it would take major surgery. I'm not up for that. I'm thinking I could cut 1/4-3/8" off so that they won't stick out far. I was going to silver the edges to simulate heated iron. Worst case I have the original Pica vacuum forms, but they wouldn't be as nice. Worse, worse case they will just become an oddity on my pseudo-scale attempt. Not as elegant a choice, but realistic at this point in the build.


Old 06-02-2020, 03:58 PM
  #104  
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Originally Posted by Chad Veich View Post
The Mustang looks great szempruw. I am getting ready to try my hand at covering a model with aluminum, although I am using the stuff from Meister Scale. Fortunately my model only has a bare metal fuselage and all the compound curved areas are painted so it should be relatively straight forward.
Hi Chad, I bought some from there also. I recall your drawings. I assume you built your Mustang? I'll search for build log. Everyone said you need a smooth finish to apply the foil. I did that and had no real problem. I'm sure you will do better at it. Some of my panels butt jointed so well, they disappear. I'm going to go over and score them when I do the rivets. Just so the panel lines show up. I'll use foil again.
Old 06-06-2020, 09:50 AM
  #105  
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Default Novice Flite Metal Techniques Continued

I found this guy with a nice series of videos on metal covering. Check out all 3. Worth watching.
I notice he uses slightly thicker foil. Adds a little weight but maybe more forgiving in stretch.

I'm attaching progress pictures. I ordered the leather tool he is using. I also tried the shish kabob stick technique. The jury is out, but it might definitely help in defining the panel lines better. I know I'll have to retrace many for clarity of the lines post sanding.


Getting close. Tail, almost done.

The ladder helped me slice top panel lines. I should have built the table lower.

Starboard side done. A few panels on the bottom and the cowl remains.
Old 06-10-2020, 01:46 PM
  #106  
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Default Worst Curves for Flite Metal

These have to be the worst compound curves on the cowl. This area will be painted anyway. The whole area was wrinkled. I sanded with 120 grit then 380 grit. The primer will cover the splits.

The wrinkles covered most of the cowl.

Good comparison shot before and after sanding.

Last edited by szempruw; 06-10-2020 at 02:08 PM.
Old 06-11-2020, 03:33 PM
  #107  
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After 15 years I acquired this kit again. I won't build it any time soon, but it's nice to know it's back in my collection.


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Old 06-12-2020, 12:59 PM
  #108  
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Originally Posted by szempruw View Post
Hi Chad, I bought some from there also. I recall your drawings. I assume you built your Mustang? I'll search for build log.
Actually my 1/4 scale Mustang plans were commissioned by a customer of mine in Italy and I really have no intentions of building one for myself. Due to storage and transport limitations, not to mention cost, I just can't justify a model that large for myself. However, if you would like to see a build log there is a nearly completed Mustang being built from my plans at this link: https://www.rcscalebuilder.com/forum...TID=24002&PN=2

The airplane I will be using the Meister Scale aluminum material on is a sport scale Yak-11 racer known as "Perestroika". The wing, tail surfaces, and forward cowl are all painted which leaves only the fuselage in bare metal and it has very few, if any, compound curves. I figured it would be a good first effort as there are several other projects I have in mind that are natural metal finish all over. Just as you did, my airplane will be fully glassed, filled, and sanded as smooth as I can get it prior to the application of the aluminum finish. It is my intention to apply the material in scale panels and leaving a very narrow gap in between to represent the panel lines. I may or may not bother with rivets on this one, have not decided yet. The airplane is really not all that scale and will be nothing more than a sport flyer. Fingers crossed!


Old 06-13-2020, 09:10 AM
  #109  
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Default Experiment! Experiment! Flite Metal

Chad, I can't imagine how to lay a panel down with spacings. I think the "experts" might suggest laying down striping tape, but with a smaller scale model, even just making an extra pass with the blade using a straight edge would work. I experimented with some test coupons the overlap and butt edge techniques. The black ball point pen actually works well making an indent. Getting the lines straight will be time consuming, but so what. Best to experiment if important to you. I read a lot of suggestions. One of the best I'll emphasize was using the 3M green scuff pad. OK, after sanding the major wrinkles with 120, then 400 grit, the 3M pad really balanced out the swirls and allows horizontal and vertical scratches as the finishing touch. I can tell you that the surface prep really pays off. I had very little orange peel effect and the pad conforms so well to the surface that I was able to minimize paper sanding and it was faster.

I also read some "experts" advice about the war planes. They were well used and beat up, weathered etc. so much so that I am thinking perfection is futile. Walking around a restored Mustang at a local airport did show me how imperfect many spot were on the aluminum. It was polished and shiny, not a typical warbird. I'll "weather" mine a bit after painting too. The oxidized aluminum is natural. Many of the rivet holes were filled and painted for laminar flow. I didn't know Bondo was available back then. They called it dumb-dumb or something like that. Attached are more status pictures. Just a little more tail work and then some rivet work. Thanks for the link.

PS My wife thought I was crazy with adding so much detail, but when I said it was like prayer, she understood. You just let your mind go into a trance doing the modeling. Is this a great hobby or what!!? .





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Old 06-27-2020, 06:40 AM
  #110  
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Would a TF 1/5 Mustang cockpit kit fit in this kit?
Old 06-28-2020, 04:40 PM
  #111  
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Per their website. "This is the Top Flite Scale Cockpit Kit for the Giant Scale P-51D Mustang Kit (TOPA0400). COMMENTS: This is specially designed for the Top Flite Giant (1/5) scale P-51D Mustang (TOPA0400. If wanting to use with other kits, modifications may be needed. AXY 12/2/97 ir/jl"
Old 09-24-2020, 05:23 PM
  #112  
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I picked up a 1/5 scale Pica P-51 from an estate. It has not flown. Can anyone tell me the recommendation for CG and control throws

thanks
Old 09-27-2020, 10:22 AM
  #113  
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here are a couple of pica stangs
Old 09-27-2020, 05:33 PM
  #114  
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Default CG and Throws for Pica Mustang

Originally Posted by jkeze View Post
I picked up a 1/5 scale Pica P-51 from an estate. It has not flown. Can anyone tell me the recommendation for CG and control throws

thanks
See Flyjets comments in this link. It has the throw dimension from the manual. Proper CG for the Pica P51D 1:5 ???

Regarding CG, based on my calculations using a static margin of 15% I'm going about 2" forward of main spar. I corresponded with the designer. They just started at 25% of the chord and then adjusted from there and kept it a little nose heavy for beginners. If you like a twitchier tail heavy plane use the 5% static margin which is about where Flyjets recommended.
Old 10-04-2020, 07:37 PM
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I just picked up a partially started one of these. (The top of the fuse is done)
It came with Robart retracts so it was hard to pass up.
Still debating what to power it with. Thinking an OS 33.
Looking forward to reading everything everybody has done to date.
This will be my most ambitious project to date.
Wish me luck!!!!!

John
Old 10-29-2020, 07:00 AM
  #116  
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Originally Posted by BobH View Post
The plane looks good. The exhaust ? not so much. Take a look at a few pictures of the real plane to see how they should look
I decided to step back at the start of this building season and attempt a fix. So BobH, I took your comments to heart and I tried to fix the exhaust a bit. Not perfect, but better, Thanks for your comments
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Old 10-29-2020, 07:05 AM
  #117  
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Looks Better
Old 10-29-2020, 07:18 AM
  #118  
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Default Partial Build

Originally Posted by motoman326 View Post
I just picked up a partially started one of these. (The top of the fuse is done)
It came with Robart retracts so it was hard to pass up.
Still debating what to power it with. Thinking an OS 33.
Looking forward to reading everything everybody has done to date.
This will be my most ambitious project to date.
Wish me luck!!!!!

John
John, Do what you want, but I researched engines and previous builds and I think the OS 33 will be a little under powered unless you weigh in at under 20lbs flying weight. I was going to put in a DLE 35RA but as a second thought, the DLE 55RA became an obvious better choice. The worst you can do is have an under powered war bird. I'm not saying it won't fly, but even the original build had a Super Tigre 3000 nitro and they had to add about a pound of weight to balance. No retracts or any other weight added. My goal is less than 25 lbs and I'm still worried about being heavier. I know that up to 28 lbs will fly ok.. It's up to you. If you do, let us now how it works out. Weight, CG, flying success etc.
Old 11-20-2020, 04:24 PM
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Originally Posted by szempruw View Post
John, Do what you want, but I researched engines and previous builds and I think the OS 33 will be a little under powered unless you weigh in at under 20lbs flying weight. I was going to put in a DLE 35RA but as a second thought, the DLE 55RA became an obvious better choice. The worst you can do is have an under powered war bird. I'm not saying it won't fly, but even the original build had a Super Tigre 3000 nitro and they had to add about a pound of weight to balance. No retracts or any other weight added. My goal is less than 25 lbs and I'm still worried about being heavier. I know that up to 28 lbs will fly ok.. It's up to you. If you do, let us now how it works out. Weight, CG, flying success etc.


After careful consideration (and lots of input from more experienced modelers and builders) I have decided a 30 size engine will be too small. I will be upgrading to 50/60cc size. Just not sure which one yet.

Thanks
John
Old 11-20-2020, 04:25 PM
  #120  
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What size spinner would work the best (I always try to pick up parts when I can)
Never mind I found the answer...

Last edited by motoman326; 11-20-2020 at 04:42 PM.
Old 11-28-2020, 05:55 AM
  #121  
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Default Electronics and TX Setup

Before assembly of the Power Board and Receiver into the fuselage, I thought it best to test everything outside the plane. I set up a white board and used a bunch of spare servos to check functionality. I ended up using Electro Dynamics 2500 mah A123 LiFe batteries and the heavy duty switch with XT60 connectors. That is what was on the Power Board. This allows for charging inside the plane which I wouldn't do with Lipo's. I had to modify the Miracle switch hatch but the effort will result in a better setup. I have used these batteries in other planes and they are lite with plenty of power to spare.

I'm planning to use a FrySky RX8R receiver with a redundant XM+ . Same setup used on another gas plane.

One feature gained here by the use of Y harness on the CDI output is a visual indicator of CDI 'on" as shown on a Redwing video. The rudder has a navigation light so I will power that LED so that I can see that the CDI is on.

Just a bit more soldering for wing's navigation lights and this part of the project will be done.

Electro Dynamics had a nice 5 port servo wire harness that I'm using to simplify the wing connection. Al told, I have 2 XBus extenders, 13 active channels with 3 reserved if needed later..

Electronics test board



Description of channels and TX switch assignment



This is the rudder's LED light. Perfect use for showing CDI on.



I will need to modify the switch box to add the new switches. They just barely fit.
Old 12-06-2020, 07:03 PM
  #122  
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Default Installing Electronics

Trying to simplify the wing to fuse connection.


Most of the electronics is installed, Batteries are sitting above the fuel tank box as far forward as possible to keep the weight forward.


Old 12-06-2020, 07:14 PM
  #123  
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Default Tail Wheel and Doors

I had to customize a servo wire extension to the tail wheel. I wish I had a 1/5 scale maintenance guy to get inside the Tail Wheel well. It was tough getting fingers in there for steering cables and door closure on the hinged doors.

Push Pull steering cables attached to the Rudder.





I had a Phoenix door hinge hardware accessory set for the door closure. The wheel hits the wavy wire and pulls down the hinged doors. I used a servo actuator to power the wheel up and down to test it out.

Old 12-10-2020, 07:56 AM
  #124  
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Default Wing Wiring

I took the time to install all the wires in the wing before I cover with fiberglass. There are a few plastic pieces to install, but I'm getting close to covering which is the next big job.

Time for Navigation lights, landing lights and more


Retract wires routed to controller inside wing.



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Old 01-01-2021, 11:40 AM
  #125  
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is the rod you used in the flap carbon?

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