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Flyboy Models Boulton Paul Defiant

Old 07-24-2008, 11:01 PM
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Default Flyboy Models Boulton Paul Defiant

I am in the process of converting a FlyBoys Boulton Paul Defiant to electric power. Has anyone else done this or has anyone flown or even seen one flown. I would be most interested in hearing from you.

Paul
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Old 07-29-2008, 02:05 PM
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I picked one of these up as well, and will be going electric. I'll probably use a 6 cell lipo setup, with some sort of Turnigy outrunner in it. I have a set of Robart air retracts to use in it as well. Won't be starting the build till winter, though.
I see you have repainted yours, don't blame you on that! I was thinking of dullcoating mine to see if I can tone down the stock covering job.
Sure is one heck of a unique looking beast! Best of luck with yours, Paul.
Jag
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Old 07-30-2008, 10:32 PM
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Jag,

I intend to use an e-flite .46 with two A123 3s 2300ah packs. I modified the forward fuselage with a hatch so I can change out the batteries without taking the wings off. I plan a few other things including vacuforming a clear canopy and a turret that is the correct size and shape. Right now the goal is to get her into the air. Eventually she will be painted as a 256 Squadron Nightfighter. Here are a couple of shots of my progress.

Paul
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Old 07-30-2008, 10:38 PM
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Don't know what happened. Here are the pictures that didn't make it on the last post.
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Old 07-31-2008, 12:44 PM
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Any idea what your projected auw is going to be Paul? The batteries, is that wired in series or parallel?
Great on the vacumn forming on the extra parts. I'm sure you'll have a great looking bird.
Jag
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Old 07-31-2008, 12:50 PM
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Looks like it's coming right along.
I like the Grizzly in the background too.

Paul
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Old 08-08-2008, 05:21 PM
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The motor installation has been completed. The .46 is probably a real overkill for this plane, but it is what I had available.

Paul
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Old 08-08-2008, 05:39 PM
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Originally Posted by Jagzilla View Post
Any idea what your projected auw is going to be Paul? The batteries, is that wired in series or parallel?
Great on the vacumn forming on the extra parts. I'm sure you'll have a great looking bird.
Jag
Jag,

After weighing all the components the all up weight is around 6 1/2 pounds. It may grow some as I am adding a couple of Hobby Lobby plastic bombs and another servo. Still a pretty light bird.

The batteries are wired in series..

Paul
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Old 08-09-2008, 10:45 AM
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That is going to be some plane Paul. I do like your motor mounting system. It shows how adaptable it is for use between models. Barry
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Old 08-11-2008, 01:33 AM
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Barry

You are right. I even used the leftover parts to install the same motor on my Tiger Moth. This system allows me to switch engines and ESCs between planes in under one minute. I can also remove the whole motor and mount quickly.

Paul
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Old 08-11-2008, 07:00 PM
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Yep excellent idea. The planes I build will be much smaller than yours as it's still too expensive to go large with electric over here but smaller threaded shafts should work on smaller models ok. Barry
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Old 08-11-2008, 10:06 PM
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Yes, it works fine on smaller planes. Richmond RC, in Canada sells a L-19 ARF with an electric motor kit option. These are the guys who first showed me how to make a adjustable motor mount. As you can see from the photos I also have a GWS P-40 with the same mount. Since the first P-40 is about to be replaced with another it will be a simple operation to remove and install in the new plane.

Paul
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Old 08-12-2008, 08:36 AM
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Brilliant, Thanks for the pics Paul. Barry
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Old 09-24-2008, 11:42 PM
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Default Back to the Defiant

As long as I had the bottom of the wing open to add the flaps I decided to add a couple of Hobby Lobby Bombs. I know they are not scale, but in my Air Force night fighters drop bombs..
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Old 09-25-2008, 05:15 AM
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FWIW if it flys 1/2 as good as their ME-163 Komet this thing will be a real winner.

Best of luck to you!

Tommy D
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Old 09-27-2008, 02:57 AM
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What an interesting plane. Flying Scale featured a larger build of one a few months back, which caught my interest.

Are you going to make the turret funtional? I'd like to see that.
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Old 09-27-2008, 07:58 AM
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Tom,

Glad to hear the Me 163 is a good flyer. I had been wondering about that plane.


Bill,

My intention is to build a more scale turret. The turret provided is completely the wrong shape. The turret will not be operational, hopefully a little more accurate. This plane is just for fun there are too many things out of scale or just plane wrong that will take tons of time to correct. Just in case this plane turns out to be a real winner I bought a second to go whole hog on. As big as the wing is she will be able to carry cameras and other payloads my guess is she will end up being a real work horse.


Paul
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Old 10-02-2008, 09:07 PM
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Default Flapr Gear and Bomb release

Well the Flaps, gear and bomb release are in all that is left is to recover the top of the wing.

The flaps work off a three position switch. The middle position is 25 degrees and the other position is 45 degrees.

I did not install the vacuuformed wheel wells because the struts covers are larger than the plastic parts allow for. I will eventually have to make wooden wheel wells. But that is well after the test flights.
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Old 10-19-2008, 08:49 PM
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Originally Posted by Destroyer of airplanes View Post
Well the Flaps, gear and bomb release are in all that is left is to recover the top of the wing.

The flaps work off a three position switch. The middle position is 25 degrees and the other position is 45 degrees.

I did not install the vacuuformed wheel wells because the struts covers are larger than the plastic parts allow for. I will eventually have to make wooden wheel wells. But that is well after the test flights.
Sorry to rain on your parade, but the Defiant was designed as a pure bomber-destroyer -- foramtion flying with the streams of German bombers while the turret gunner pounded asay with his 4 .303 machine guns.

It wa later used as an interim night fighter, air-sea rescue and most miserable of all, a target tower (British planes were now pounding away at it with their guns....)

Never was used as a bomber. Check the wikipedia site.

Your best bet for a reasonable documentation of the Defiant in its many forms is the 3-views that you can get from Nexus in the UK (also sold by Bob Banka in the US).
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Old 10-21-2008, 06:35 AM
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Sorry to disagree but the Boulton and Paul Defiant was designed as a result of Air Ministry Specification F.9/35 from the experience gained with the Hawker Demon biplane fighter which in 1934 had been equipped with a Frazer Nash hydrauically operated turret by Boulton Paul Aircraft. The first Defiant squadron ,no 264, were first deployed on 12th May 1940 as fighter cover over the beaches of Dunkirk and destroyed 38 enemy aircraft in one day as the enemy fighters were attacking what they thought was the soft rear of the aircraft to be met by a burst of 4 303 guns. When the Germans discovered they could attack head on with complete immunity the game was up and heavy losses meant they were withdrawn from daylight fighter operations in August 1940. During 1940/41, fitted with radar they took up night fighter operations and recorded more kills per interception than any other night fighter. happy flying Barry
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Old 10-25-2008, 07:46 AM
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Byrocat,

I did check wikipedia and found the US and Polish also operated it. More research may yield some very unusual color schemes. I do have the "Profile" on this plane and it has a really nice sliver and green camouflage used by the air rescue guys. If the black doesn't work out I may repaint as depicted.

As for the bombs I just did that for the dive bombing contests our club has.

All I lack now is the new turret. Probably get to it this weekend. I will be taking the day off Tuesday to Fly the Defiant and my rebuilt Spitfire.
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Old 12-03-2008, 08:43 PM
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Since there are two other Defiants needing to outfit their turrets I've decided to make a mold of the guns. Only two of the needed four guns were provided. Using a block of balsa, a couple different size dowels and some plastic bits out of old kits I built a suto gun. Try as I might I have not been able to find a picture of the Defiants guns so I built something simular to a 30 cal browning ac. For the inside of the turret there is a 1/72 scale plastic kit I will attempt to copy. Here is where I am at so far.

Paul
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Old 12-04-2008, 03:30 PM
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Here are a few more progress pictures.
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Old 12-05-2008, 08:36 AM
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Fabulous job Paul , that's real ingenuity mind you anyone, who like yourself, can build a fully functioning gun system in a model warship should have no problems here. Now there's a thought, air to air combat with functioning guns. Who will be first? Happy flying, Barry
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Old 12-06-2008, 05:24 AM
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I got the turret installed. it is funny how the guns show up as a light gray when they are actually a dark gray. Just for grins I think I will make them traverse with the flaps. Flaps up they are at 6 o'clock half flaps between 7 and 8 and full flaps 9 to 10.
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