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Pica 1/6 P-40

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Pica 1/6 P-40

Old 12-02-2021, 07:57 PM
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willits18
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Default Pica 1/6 P-40

I bought this kit about 10 years ago. The previous owner had just started to frame the wings and that is about as far as he got. I did and inventory of the kit and it looks like everything is still there. I have built many kits in the past but have taken a 10 year "vacation" from the hobby. I have to say I haven't built a kit like this before. Mine were all cubs, Senior Kadets, and Senior Falcon, a Senior Telemaster. There were others, but they fell into that general category-sport flyers and trainers. I always wanted to build a P-40. I am going to take my time with this one and make sure everything fits well and is done in correct sequence. There is an instruction book with the kit as well as 2 plans sheets-1 for the fuse, and 1 for the wings, stab and elevator. I will post pictures as I go. I was going to use a Magnum 120XLAR 2 stroke with a 16oz fuel tank. I was also going to use koverall and dope. I was also not going to put in retracts- a lot of money and weight added. Has anyone else built one of these? I will post picture this weekend. Tracy.
Old 12-03-2021, 05:09 PM
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Default Here is what I am starting with.


Old 12-03-2021, 05:11 PM
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Default More pics


Old 12-03-2021, 05:15 PM
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This kit seems to route the servo extensions through cutouts on top of the ribs. I may run a tube through the ribs for greater accessibility. There are also no provisions for a servo door to service the servos if the need would ever arise. I put these into one of my other larger planes. These are my initial observations.
Old 12-05-2021, 08:34 AM
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Default servos ordered

I just ordered 7 Hitec D645MW servos.
Old 12-07-2021, 11:04 AM
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Subscribed!

Mike
Old 12-07-2021, 05:03 PM
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That two stroke 120 magnum should haul it around good.
Old 12-07-2021, 05:49 PM
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Default I also have a 180

I also have a 180, but I think that would be overkill and add too much nose weight.
Old 12-08-2021, 08:07 AM
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Old 12-08-2021, 08:07 AM
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wing sections joined
Old 12-08-2021, 08:12 AM
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Default Servos


I am not going to use the stock servo mounting setup. The servos were meant to be inside the wing where it would be impossible to replace them unless you took off the sheeting. This design was meant to accommodate the retracts which I am not going to use. I will make removable servo compartments which I will document as I go.
Old 12-08-2021, 09:15 AM
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With your choice of servos hopefully you shouldn't need to ever replace one. However, removable servos do give you an inspection point if something unexpected occurs.
Old 12-08-2021, 03:38 PM
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Looking good, keep slinging that glue I’ll be watching too!👍
Old 12-10-2021, 09:29 AM
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I am going to use the standard servo routing on the top of the wing ribs (as specified in the plans) instead of tubes through the ribs. I am not putting in retracts at this time, but if I decide to later on it will make it much easier. I am still going to make service doors and mount the servos on the door itself. I will detail with pictures when the new servos arrive-sometime in the next 2 weeks.
Old 12-10-2021, 09:43 AM
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If there is a possibility you might add retracts in the future you might want to consider installing the mounts and a solid hatch over them. You could also install a string in place to pull the cable or air line thru for easier future installation.
Old 12-10-2021, 05:31 PM
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Thanks OKC. I will take a look at that. Like you said, it will be much easier with a little pre-prep now.
Old 12-16-2021, 01:05 PM
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Default Bottom of wings sheeted

I have the bottom of the wings sheeted. I cut out the doors for servo access. I have ordered servo extensions and a receiver. I am going to wait until both are here and lay everything out so when I cut the servo slots for the ailerons and flaps , I will know exactly where to cut. I will post pics later.
Old 12-18-2021, 05:15 AM
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Default Double Duty

Looking good. I keep checking in to see your progress.
I was interested enough in this PICA kit that I did an internet search on it and stumbled across where you are doing double duty with this one over on RCG. Looks like both sites are getting about the same interaction.

Good Luck with the build.
Old 12-18-2021, 07:53 AM
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Default servo doors

Here are the doors for the servo access. I was going to mount the servos on the actual doors to be able to easily remove them if necessary. After careful consideration I thought it better to mount them in the "stock " locations in the wing ribs with reinforcements.-there will be a lot of torque on these unlike a 40 size sport plane or trainer. I can still take them out if necessary to replace the servos, replace or adjust the arms, or service the wires. Notice the extra balsa supports that I will use to secure the access doors to.

Old 12-18-2021, 07:58 AM
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Default making the wing skins

first step is to make sure the individual sheets are straight and true. I then use masking tape to keep them that way. I also use masking tape to hold them together after glued. After gluing I take a wet washcloth over the area to pick up any excess glue. I then put them on top of a wax paper sheet so they won't stick to the building board. When in place I use weights to keep them that way.

Old 12-18-2021, 08:00 AM
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I accidentally cut one of the access doors on the wrong side of the rib! I was thinking TOO hard about that one! I also had to notch out a coup-le of the door supports to be able to get the servos in and out.
Old 12-30-2021, 12:01 PM
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Default Servo mounting detail



I wasn't happy with my previous attempt at making a servo access door so I cleaned up the access points and went back to my first plan of mounting the servos on the doors. I used 1/8" ply for the doors and 3/8" basswood for the mounting points in the wing. I slotted the doors for the servo arms to come through.
Old 12-30-2021, 12:03 PM
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Default Servo door detail



I mounted the servos on 1/8" ply. I used 3/8" basswood for the mounting points in the wing.
Old 12-30-2021, 08:16 PM
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Default New radio

The next thing I need to do is to learn to use the new radio. It's a Spektrum DX6E with a Spektrum 631 receiver. My Fm radios came with a 6 page folder. These came with books! It looks like I can use the same transmitter on more than 1 plane. I just have to use different receivers.
Old 12-31-2021, 06:03 AM
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I mounted servos the same way when adding ailerons to my Kadet senior. This is also the same mounting for the ailerons on a four star sixty.

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