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P-40 Warhawk


Kelly
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Installing the engine.

The metal engine mounts are secured to the fire wall by four socket screws and blind nuts.

The holes for the mounts are already drilled in the firewall.

View from insde the fuselage of the blind nuts.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010007a.jpg

Position of the throttle tube marked on the firewall.

 

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010008a.jpg

With the engine removed the hole for the throttle push rod tube is drilled through the fire wall and fuselage former 2. It is then glued into place.

The throttle push rod is attached to the throttle arm on the engine and passed through the throttle tube.

The engine is secured with socket head scews and nylon lock nuts on to  the engine mounts.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010012a.jpg

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Rudder and elevator servos are installed opposite sides of the rear fuselage, removal of the covering reveals the mounts  already  installed.

 

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010002-1.jpg

The servos complete with extension leads.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010003-1.jpg

In place.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010008-2.jpg

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010010-2.jpg

Radio switch fitted.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010007-1.jpg

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The ailerons are operated by two servos,one in each wing.(The string is to pull the servo lead through the wing).

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010001-1.jpg

The servos are mounted on the hatch covers on wooden mounting blocks.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010002-2.jpg

The servos also need long servo arms in place of the standard ones.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010003-2.jpg

Servo mounted on the hatch cover complete with extension lead.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010008-3.jpg

Servo ready to be installed with pull- through string attached. Half of the servo arm has been removed to allow clearance in the wing.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010009-1.jpg

Hatch cover complete with servo held in place with four screws.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010011-2.jpg

second servo is mounted in the same way.

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Hi Kelvin

This is a great blog. Good photos too. I'd like to point out that this article is also very relevant to anyone wanting build the Hangar 9 Mustang. I've in the latter stages of building "Miss America" and apart from the wheels retracting differently, the construction is exactly the same. All of the servo mounts look like the same parts and hence are fitted by the same methods. 

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I've spoken with Kelvin and He's happy for me to add some stuff here regarding the Hangar 9 Mustang and in particular the "Miss America" version I'm building as I've already said its very similar to his Warhawk as far as construction is concerned so I won't repeat his comments but add a few of my own that hopefully will compliment this article.

Here's a pic of my Mustang. I made the supporting tressle from central heating pipes and fittings

http://i152.photobucket.com/albums/s164/aero120/moto_0083.jpg

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Kelvin Stephenson wrote (see)

Nice scale looking exhaust ,if I could afford it .

http://i217.photobucket.com/albums/cc2/kelly2uk/ex.jpg



I have a  friend who made one similar to this some time back for his lancaster - used 4 X RCV engines. The exhaust was made up from small bore central heating pipes and elbows - was featured in RCME - few years back now....
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Hopefully my comments will provide an alternative take on a warbird ARTF. Mine is a Reno Racer and so I've gone for performance. Whilst many full size warbirds are valuable classics and so are carefully cruised around at public displays to prolong their lives, I grew up near Rolls Royce Hucknall and vividly remember the sight and sound of their Spitfire being flown all out, howling at low level around the airfield and town. Its in bits now and being rebuilt at Filton so there's a lot to be said for the carefull approach taken by the BBMF and other owners of these classics! I've not done the maths, but even as the sound goes a high performance V12 can't be far off the "bangs per minute" from a healthy single cylinder two stroke.

Hucknall is also the place where the Merlin met the Mustang and so in the year where aero engine testing is due to close at Hucknall, this model seems rather apt.

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I have decided that this model is for fun, howling around and looking great but with a good nod to scale items. Hence I have replaced the dash sticker with a "scale" decoupage dash with voltage gauges inplace of a dummy radio stack

http://i152.photobucket.com/albums/s164/aero120/moto_0088.jpg

The pilot is an ideal candidate for MIss America!

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Control Linkages.

The Rudder.elevator and ailerons all use the same method -Nylon clevises and nylon wire keepers.

Fitting the control  horn for the elevator.( same method for the rudder) .

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010001-2.jpg

Finished elvator linkage (rudder same).

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010004-1.jpg

Ailerons.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010011-2.jpg

Finished linkage.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010006.jpg

Throttle linkage.

Engine re-installed with throttle push rod fitted.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010007-2.jpg

Pushrod connected to throttle servo arm with a quick connector.

 

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010009-2.jpg

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Here is the Pilot Zach, named after my eldest Son.

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010012a-1.jpg

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010013a.jpg

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010014a.jpg

http://i217.photobucket.com/albums/cc2/kelly2uk/P1010015a-1.jpg

Arranging a in- cowl exhaust system like the one Paul has  in his H-9  P-51,(see his photos above).

Not much left to do. Cockpit to finish, radio to install with seperate retract battery,  engine plumbing and  the cowl. 

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http://i152.photobucket.com/albums/s164/aero120/moto_0108.jpg

As a personal preference I've replaced the tailwheel with an alloy hubbed version so I could retain it with washers soldered on each side of the wheel. I've also bent the rod sideways to engage in the control horn. This is more ugly than inseting it into the front of the rudder but isolates the rudder from any vertical movement of the tailwheel. The tailwheel can also be removed for maintenance. Also worth noting is that the tailwheel is completely wrong for a P51. If I have to do a rebuild I will consider moving it to the scale location and making it retractable

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http://i152.photobucket.com/albums/s164/aero120/moto_0137.jpg

Inside I have added 1/8 ply and balsa spars to carry the fuel tank batteries and reciever. The front set of spars also locate the fuel tank and are retained by screws into hardwood bearers so they can still be removed. I've also replaced the rigid throttle rod with a cable routed well to the side of the plane

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http://i152.photobucket.com/albums/s164/aero120/moto_0109.jpg


 I have fitted a remote glow and fuel connector to an alloy bracket that is screwed to the firewall. The needle valve has been repositioned using a 1/4inch piece of hardwood bearer to move it sideways but maintaining its vertical position relative to the carb. Its visible on the above photos.

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