|May 01, 2013, 11:49 AM|
Yet another PBY
This one is designed to fly from a grass field, hand-launch.
Many years ago I watched a Catalina at an airshow. My abiding memory is its very-slow speed. So I aimed for a light model. Even so, it flies at two or three times scale speed.
Span 59"......weight 36 oz.....wing loading 11 oz/sq ft......2 motors, 50gram, 1400Kv.....batts 3S, 2.2Ah [just balanced].......wattmeter shows 220W at 10.6V.
|May 10, 2013, 12:46 PM|
The extension leads, from ESCs to motors, are made of single-strand, varnish-insulated winding wire. 20SWG [.036" dia], for 10A per motor. [photos 1,2]
Leads are embedded in the wing LE, and soldered to the motor. [photos 3,4,5]
The two ESCs are mounted on a rack, to aid cooling. ESC outputs are soldered to the extension leads. [photos 6,7,8]
That lot disappears into the battery bay.[photo 9]
There are two cooling-air scoops on the wing pylon. The air exits through two open windows.
|May 10, 2013, 03:02 PM|
Nice one Peter.
I can still remember my old Cat', great plane to fly.
It was based on an old control line plan, 62" span, flew from a hand launch, and after a lot of 'dancing', actually flew off water.
The motors were the Acoms brushed with the gearboxes, and the original plastic Acoms props, plus a 6 cell Nicad pack.
I just found the original plans are still available -- http://www.myhobbystore.co.uk/produc...ina-plan-cl606
Was a loooong time ago.
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