Kyosho Corsair

 

Owned and built by Dr Randy Shaffer
corsair.jpg (27983 bytes)  

Specifications

Plane: Kyosho Corsair
Plane Weight: 9 lbs
Wingspan: 58 "

Prop: 16 x 10 Master Airscrew

Powered by: RCV60-SP

The full size Corsair wing design allowed the plane to power larger props to accomodate the high powered engine.  Only with an RCV engine with it's 2:1 reduction gearing can such large propellers be utilised to perfect this scale look. 

Dr Shaffer wrote the following about his RCV60-SP
"I recently installed a 60 size RCV in a Kyosho Corsair.  The model flies very well and looks very scale due to the 16"X 10" three bladed propeller the engine is able to spin.  Not having to butcher the cowl to accommodate a conventional piston cylinder really helped the scale appearance. I do like starting the engine from in back of the propeller, it is safer and the engine starts much quicker then conventional designs.  "  Following further flying Randy adds 'the model flies best using the APC 15x12 2-bladed propeller'

corsair1.jpg (24440 bytes)
corsair3.jpg (19844 bytes) He adds that:
"I was concerned about overheating so did modify the cowl mount to allow more air to escape around its periphery (it worked perfectly). I will be purchasing more of your RCV engines since I am very impressed with their
advantages and performance.  There were many questions and interest in the RCV engine at my RC flying club field.  After flying the Corsair model many of the club members requested your web site. 
Top Tip
Following some interest in this model there was a query on how best to obtain the down thrust recommended by the kit manufacturers, Randy was kind enough to provide us with more information on his engine installation:-

I fabricated two plywood wedges one to mount between the firewall and the engine in order to obtain the down thrust called for in the instructions and the other to go between the backing plate and the back side of the firewall. To make the plywood wedges all that is needed is a protractor to determine the correct angle to sand the plywood squares and a power belt or circular sander to sand one face of the plywood squares to the proper angle. One plywood wedge is bolted between the engine and the firewall and the other wedge is bolted between the backing plate and the other side of the firewall. The two wedges mounted with their angled surfaces parallel to each other provide a flat surface for mounting and the proper angle of down thrust. Additionally I cut a piece of 1/8 plywood to match the shape of the firewall and epoxied it to the other side of the firewall inside the fuselage, this in conjunction with the plywood cowl mounting ring supplied with the model compresses the fiberglass firewall between the two pieces of plywood giving ultimate rigidity for the engine mounting.