[NSRCA-discussion] Help Needed--Off-Topic (Cap 21 88" WS / GPGiantScale f...

Rcmaster199 at aol.com Rcmaster199 at aol.com
Thu Mar 16 18:14:01 AKST 2006


 
In a message dated 3/16/2006 3:58:48 PM Eastern Standard Time,  
lld613 at psci.net writes:

Great  Planes… 
It was kitted by Paul  Clements (Kitty Hawk Models) in Indiana for GP. 
“Cap 21 Giant Scale  Deluxe Kit” (FG Fuse, Foam Wings / Stab) with all the 
hardware and all the  wood that was normally included back then…has torque rods 
and bell cranks for  the Flap/Ailerons depending on what options you build 
into it and the torque  rod for elevator (not split halves)…


I would get rid of that hardware, for sure. Use light servos to drive each  
surface back there and on ailerons. At 88" the span is only about a foot longer 
 than our typical pattern model meaning the area is probably no more than  
about 150-200 sq inches greater, roughly 10%. That means the model should  weigh 
no more than 16 pounds to fly somewhat like you are used to. You probably  
couldn't get equivalent weight to a pattern model considering the overbuilding  
back then. Choose the wood included in the kit accordingly and freely 
substitute  as you see fit with 8 pound stock. The landing gear should be tossed.
 
The foam wing doesn't need fancy anything in that small size. Just sheet as  
you would a typical pattern wing. Go as light as you can on stab, and if 
rudder  weighs more than about 1 1/2 ozs(say...  2ozs max)  it's too heavy.  Build 
one up from sticks and cover in 1/32" balsa again around 8 pound  stock.
 
Good luck; sounds like fun project of carving. And take it easy with paint  
of that glass fuse
 
MattK
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