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CAC Wirraway

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NOTE: RADIO CONTROL AIRPLANES ARE ON THE BOTTOM HALF OF THE PAGE.

The CAC Wirraway was built by the Commonwealth Aircraft Corp. in Australia under license from North American Aircraft Corp. In addition to training airmen, it was also employed as a light attack aircraft.

One version of the Wirraway was equipped as a dive bomber. Armament consisted of three .30 cal. machine guns, two in the cowl and one behind the cockpit that was controlled by a rear gunner observer. Bomb racks were fitted beneath the wings.

After WW II Wirraway aircraft continued serving as trainers until the last one was retired from active military service in 1959.

Flying a vintage Wirraway properly, calls for the full attention of its pilot. The before-flight check means keeping an eye out for parts that have broken with age, in addition to checking the fuel and engine oil levels.

Starting the engine calls for bringing up the fuel pressure and unlatching the primer and starting pumps. Turn on the battery and actuate the starter. After you see six propeller blades pass by, engage the magneto. Now its time to check oil pressure. If its good, the engine should be warmed up at around 900 RPM.

Once all the gauges are reading in their proper ranges you can taxi to the main runway run-up area. There you want to bring RPM's up to about 1,200 while doing final checks. Make sure your flaps are retracted for take off.

Once on the active runway and ready for take off, bring the manifold pressure up to 36 inches at 1,500 RPM.

Get the gear up and use 30 inches of pressure at 1,350 RPM for climbing once you pass around 500 feet of altitude.

You will find that the Wirraway makes a steady weapons platform. There is no need for constant trim adjustments at different speeds. For rolls, best speed is around 160 mph, while large loops are best made at around 200 mph. Because this aircraft has been flying for quite a while, it is best not to put too much of a load on the airframe. Best economy cruse speed is 155 mph. At that speed the engine will use around 26 gallons of av gas in an hour.

For landing, be sure the gear is down and locked. Flaps are best set at 40 degrees on days with minimum winds. If a crosswind is blowing,  it is best to set the Whirraway down on its mains.

After setting down, you clear the runway and bring the aircraft to a stop, you can retract the flaps. Before shutting down, run the engine at idle speed for a couple of minutes. Pull the mixture to idle cut off and turn off the engine, battery and generator. Lock the controls and log another flight completed in the historic Wirraway war bird.

A total of 755 CAC Wirraway aircraft of all types were produced.



Specifications

    Primary Function:
    Engine:
    Power:
    Crew:
    Length:
    Wingspan:
    Weight Empty:
    Max. Weight:
    Machine Guns:
    Ordnance:
    Cruise Speed:
    Max. Speed:
    Initial Climb:
    Ceiling:
    Range:
    First Flight:
    Year Deployed:
trainer/attack
P & W R-1340
600 hp
two
27' 10"
43' 0"
4,0000 lbs.
6,600 lbs.
3- .30 cal.
750 lbs.
155 mph
220 mph
1,950 fpm
23,000 feet
720 miles
9/3/37
1939



The rc CAC Wirraway (AT-6) ARF for sale.



Radio Control Airplanes:





Pictured above is the rc giant scale CAC Wirraway ARF for sale fro Nitroplanes.  You are right, it is a AT-6. However, if you get a three bladed prop and change the markings, your friends will probably never know the difference. And, this is a truly great rc airplane from NitroPlanes! Its wingspan is 82" and it is 55" long. Both the fuselage and wings are glass fiber. Engine should be a 1.60 two stroke. Weight is around 12 lbs.

The first picture below is of the rc CAC Wirraway built from Airborne Magazine plans.  Plan no. is 569.  It has a wingspan of 71" and uses a .60 two stroke engine.

The second and third pictures below are of the rc CAC Wirraway built by spudandcat of WattFlyer RC.  It is a conversion from a Seagull kit. Its wingspan is 82" and it is 54" long. Power comes from a Turnigy motor. Weight is only 7 3/4 lbs.

The fourth picture below is the rc CAC Wirraway built by Scott Woodford from unspecified plans.  It has a wingspan of 71.5" and is powered by a Thunder Tiger .61 two cycle engine.  Weight is about 10 1/2 lbs.

Pictured last is a good looking rc CAC Wirraway from a video posted to YouTube by World Hobbies. The only information provided is that it is powered by a O.S. FR5-300 engine.  The builder, wingspan, length, and weight are not given.  If you have any additional information about this rc airplane, please let us know.



Airborn Magazine rc CAC Wirraway.


The rc CAC Wirraway by spudandcat.


Seagull rc CAC Wirraway conversion.



Scott Woodford's rc CAC Wirraway.


The rc CAC Wirraway from YouTube.




You can find plans for sale for a rc CAC Wirraway from the 5/1981 issue of Radio Modeller. Plan no. is 238. It has a 71 1/2" wingspan and is powered by a .60 2C engine.

Profile Publications #154 has 5 view drawings to help build your rc CAC Wirraway scale model radio control airplane.

At RC Universe alanalex started a thread about constructing a rc CAC Wirraway.

Chad Veich of RC Universe posted a link to a CAC Wirraway plastic model.

DAN REISS of RC Universe posted information on where to find CAC Wirraway drawings.

At WattFlyer RC spudandcat posted a link to a video of his rc CAC Wirraway.

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