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GWS P-40 Build Thread

Old 08-31-2007, 02:04 AM
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Lieutenant Loughead
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Default GWS P-40 Build Thread

I received a GWS P-40 in today's mail. I decided to take some pictures, and post them here, with a build thread.

It should be noted, I am building this model for someone else. If you like what you see, and are interested, I can always build one for you!

First picture: A GWS P-51 Mustang wing, compared with the GWS P-40 wing. I must say, I thought the GWS P-40 would be significantly larger...

Second Picture: A GWS P-51 Mustang fuselage, compared with the GWS P-40 fuselage. Again, I thought the GWS P-40 was supposed to be significantly larger... Note that the Tanic 3s 2220 mAh LiPo fits in the battery area with plenty of room to spare.

However, this is good news for me, it means my existing power systems will fly this airplane with authority.
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Old 08-31-2007, 02:54 AM
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All man gotta sign up for this. I just saw the other day that GWS was making the P-40. I really want one bad. Love the 40. Whats the scheme gonna be? Flying Tiger?
This is just what I need another ARF to sit around and not get worked on.
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Old 08-31-2007, 04:29 AM
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Originally Posted by Lieutenant Loughead View Post
I received a GWS P-40 in today's mail. I decided to take some pictures, and post them here, with a build thread.

It should be noted, I am building this model for someone else. If you like what you see, and are interested, I can always build one for you!

First picture: A GWS P-51 Mustang wing, compared with the GWS P-40 wing. I must say, I thought the GWS P-40 would be significantly larger...

Second Picture: A GWS P-51 Mustang fuselage, compared with the GWS P-40 fuselage. Again, I thought the GWS P-40 was supposed to be significantly larger... Note that the Tanic 3s 2220 mAh LiPo fits in the battery area with plenty of room to spare.

However, this is good news for me, it means my existing power systems will fly this airplane with authority.

What power system will you install in the one you are building now? Will you get a chance to fly it?
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Old 08-31-2007, 04:19 PM
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Originally Posted by Water Boy View Post
Whats the scheme gonna be? Flying Tiger?
Yes -- the kit comes with two really nice waterslide decal sheets. See below for the picture the owner sent me to base the paint scheme on.

Originally Posted by smokejohnson View Post
What power system will you install in the one you are building now? Will you get a chance to fly it?
The owner is going to send me a few different motors to test on my thrust bench. He is leaning towards the Park 480. He has not asked me to test fly it for him, and I would prefer not to, in this case (simply because this is an "Early Bird" kit, and I can't replace the kit until it is released a few months from now).

When I build mine, I will probably install a Himax 2025-4200, with a 5.67:1 Cobri gear box. This is my standard "Himax Hemi" power plant, and I use this in nearly every airplane I fly.
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Old 09-14-2007, 01:27 AM
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Originally Posted by Lieutenant Loughead View Post
The owner is going to send me a few different motors to test on my thrust bench. He is leaning towards the Park 480. He has not asked me to test fly it for him, and I would prefer not to, in this case (simply because this is an "Early Bird" kit, and I can't replace the kit until it is released a few months from now).
Epyaya is showing the P-40 in stock already.
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Old 09-14-2007, 07:43 PM
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Originally Posted by herk_1 View Post
Epyaya is showing the P-40 in stock already.
Yeah, but I don't think they REALLY have them... I haven't seen ANY at my LHS, and Tower Hobbies still does not show them in stock (I backordered one).

Then again, it is my understanding that Epyaya is "next door" to GWS USA -- so maybe they DO already have them...

Back to the build -- I worked on the battery hatch during lunch today... Just when you THINK you're finished with sanding, you pick up a random piece of styrofoam, and realize you have more sanding to do!

I must admit, the stock method of securing the battery hatch seems REALLY cool. I have to wait for the glue to try before I can tell if it really works or not -- but I can save a bunch of money on rare earth magnets, if this battery hatch deal works right...

Then again, I like the rare earth magnet deal because nothing is visible -- the new GWS method has a little black clip which is visible on the top of the model. No huge deal, but if this P-40 were mine, I might just do the rare earth magnet thing, and dump the stock GWS setup... (However, this would leave a small gap in the top of the fuselage, which would need to be covered somehow.)

No picture right now -- I'll take a picture when I have the battery hatch installed. :o
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Old 09-15-2007, 02:17 PM
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Originally Posted by Lieutenant Loughead View Post
Yeah, but I don't think they REALLY have them... I haven't seen ANY at my LHS, and Tower Hobbies still does not show them in stock (I backordered one).

Then again, it is my understanding that Epyaya is "next door" to GWS USA -- so maybe they DO already have them...
Yes they do really have P-40s. Somebody on "the other board" has already received one from them. Epyaya does get new GWS planes much earlier than they show up elsewhere -- I got my GWS T-6 from them last June, yet the GWS T-6 still is not showing up at Tower Hobbies, or at a larger LHS in my area that gets new GWS kits when they can (for example they have the P-38 and Me-262).
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Old 09-01-2007, 02:23 AM
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Originally Posted by Lieutenant Loughead View Post
Note that the Tanic 3s 2220 mAh LiPo fits in the battery area with plenty of room to spare.
It might also be nice to note that a 4s 2100 fits like a glove as well.

Tommy D
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Old 09-01-2007, 03:14 PM
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LOL -- yeah, if you're willing to squash your pilot!
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Old 09-01-2007, 04:09 PM
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For 500+ watts, you bet I am!
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Old 09-05-2007, 12:05 AM
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LL,

Yeah, it doesn't seem much bigger than the P-51 when comparing parts, but just wait until you get this thing together. Then it seems humongous!

I'm finally getting mine painted up. The Scorpion 2215-18 with the new GWS 3-blade 1060X3 works just fine.
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Old 09-05-2007, 12:48 AM
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Default canopy/cowl

Reading about the p40 in the RCG thread, it appears the canopy and cowl stock has much to be desired, it melts in the sun. I highly suggest making a plug from your's so you can vaccume form a new one, that, or leave them off while flying or you are going to end up with a melted mess.
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Old 09-05-2007, 02:14 PM
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Originally Posted by SaucerGuy View Post
Reading about the p40 in the RCG thread, it appears the canopy and cowl stock has much to be desired, it melts in the sun. I highly suggest making a plug from your's so you can vaccume form a new one, that, or leave them off while flying or you are going to end up with a melted mess.
Uhhhh -- yeah... That sounds easy...

(Where's my "easy" button?)

I've been super-busy with work, soccer tournaments, and night school... I plan to take the airplane to my son's soccer practice tonight, and begin the sanding... If I'm lucky, I might be able to glue the wings together (and maybe the fuselage together as well).
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Old 09-05-2007, 04:34 PM
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I'm sure your well aware of it, but be careful when joining the wings
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Old 09-05-2007, 04:53 PM
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Default hah!

Looking at that tommy just makes me feel good about my own p40 kits I make in house, using a hand wire cutter and a little elbow grease. These guys have the entire world at their disposal to play around with the cool, and very expensive toy's to produce anything they can imagine to absolute precision, yet looking at that photo of the wings being so off....... take note, you have another thanks added to your rep...
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Old 09-05-2007, 07:45 PM
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Originally Posted by tommytorino View Post
I'm sure your well aware of it, but be careful when joining the wings
Thanks Tommy -- I remember that picture from your post on RCGroups.

However, I'm somewhat confused -- should the top of the wing be flush, or the bottom of the wing be flush?

Either way, I figure I'll have to sand and spackle...
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Old 09-05-2007, 07:57 PM
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I'd measure both of them, if they are the same thickness, then it looks like you are only having to sand/fill the belly pan area, so the top being lined up should technically have the bottom line up automatically. Just my 2 cents on it.
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Old 09-05-2007, 05:18 PM
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Thanks for the thanks.... hey, whats a thanks? =)

Ok I guess Ill thank you and see what happens.

Anyways I can say that if I were to employ a hot wire cutter on a solid wing core, out of 4 cuts, I got 1 decent wing. By decent I mean it's didn't have so many waves down the side that you could surf of it!

Best of luck to you in your venture!

Tommy D
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Old 09-05-2007, 06:04 PM
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The hardest pull on that particular plane is the aft end of the fuse, the taper is rather complex. I hear you on the rejects area, I'm accumulating quite a bit of them, some go towards becoming packing material, others, I can still use them for when I want to add onto my fleet regardless. I'll be setting up a gravity based system next for better accuracy and more consistancy. What's ironic, I've implimented a couple of elements that can be used on the GWS version and you can get the materials at local sources, mainly bashing out the cowl from pink foam and using sheet styrene folded for the canopy. The former is good if you are going to use a different motor since you can customize it towards your needs.
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Old 09-05-2007, 09:44 PM
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I guess I got lucky with mine. Although there was a difference, it was very slight. See the first post of my build thread. So far I have not noticed any adverse effects in flight performance.
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Old 09-06-2007, 02:52 PM
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If you want to get technical I suppose you should assemble the wings with a glue that has some working time before it sets up. Mount the wings into the fuse saddle and check the alignment however you feel best.

In my case I used a meter. Also I had to do some sanding of the alignment joints to get it correct. Its far more important to have the wings square/true in the saddle vs a nice smooth seam on the bottom of the wings.

Good Luck.

Tommy D
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Old 09-06-2007, 03:44 PM
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I started the build last night -- the airplane is officially sanded. When I reached for the spackle, I guess I left the lid off last time I used it, and it was all dried out!

I ran to WalMart on the way to work this morning, and picked up a new package of spackle. I will spackle tonight, and sand tomorrow (the spackle requires 24 hours to dry, before sanding). Then, the sanding and spackling will be done.

I am including a picture of WHY I like to sand GWS airplanes, before building and finishing... The mould release marks and injection points are just plain ugly to a perfectionists eye...

The good news is that I've found the most recent GWS kits (P-38 and P-40) to have mostly "outie-type" mould injection points. This makes the build go much easier because I can sand the foam down without needing to add a lot of spackle to fill in the "innie-type" mould injection point. (Does that make sense at all? )
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Old 09-06-2007, 07:39 PM
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Well, for what it's worth, today I placed an order for a GWS P-40 of my very own.

In other words, the kit looks good enough for me to purchase one for myself.
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Old 09-06-2007, 10:28 PM
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LL,

You made perfect sense. I sanded off all the little "flowers" as well, along with the "dimples" on top.

So how off were the wing halves? I don't recall reading what yours looked like. I know you said you were spackling and sanding.
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Old 09-06-2007, 11:49 PM
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I have not glued the wings together yet, but the wings looked pretty even, after initial inspection.
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