Building Tips and technical articles. > 1/2 A building.
Twin or multi engine plans
Paul Smith:
I started to build a Black Hawk XF-5F Skyrocket, but decided it was too small so I up-scaled it about 20%. It worked well.
In the kit, they use a simple 1/8" balsa wing, which is not NEAR enough to keep two engines together.
The prototype is chronically tail heavy as several modelers learned.
I got NO satisfaction with TeeDee .020's. Black Widows were good. TeeDee .049's were and still are, the BEST.
Paul Smith:
--- Quote from: Motorman on April 04, 2021, 04:42:36 PM ---Just a word about running a Cox reed with the cylinder ahead of the prop, they get hot!
Motorman 8)
--- End quote ---
Not mention possible reed damage and NOT using the internal bushing as designed.
944_Jim:
The Mitchell:
944_Jim:
And the Mosquito:
https://www.rcgroups.com/forums/showthread.php?2741283-1-2A-Mosquito-w-built-up-wing-profile-fuselage
Paul Smith:
If I build another 1/2A twin I will include a fuel shutoff to avoid the single engine part at the end of the flight. Measuring fuel seldom works well enough.
I would say, skip the idea of finding plans and just scale something that you and the judges will like.
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