Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

F-20 Cermark set up info needed

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Old 05-26-2007, 09:45 PM
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Crazy4Flight
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Default F-20 Cermark set up info needed

set up info needed for a F-20 by Cermark CG and control throws.

Yep, I bought one listed here on RCU and a JETT 90LX to replace the MVVS.77

not slamming the MVVS but I am a JETT FREAK

BTW the 77 is listed for sale here in RCU turned 11x10 Zinger at 11,4000
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Old 05-26-2007, 09:49 PM
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Flyboy Dave
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Default RE: F-20 Cermark set up info needed

....is it the 40, or the 60 size Cermark F-20 ? I have them both.

FBD.
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Old 05-26-2007, 09:58 PM
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Default RE: F-20 Cermark set up info needed

Dave

57" wingspan fuse length 60" not including the spinner

there is a MVVS 77 in it right now but not for long
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Old 05-26-2007, 10:32 PM
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Flyboy Dave
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Default RE: F-20 Cermark set up info needed

....that's the big one, the 60 size. I'll look in the pile for the manual.

FBD.
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Old 05-27-2007, 12:03 AM
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Default RE: F-20 Cermark set up info needed

sweet looking NV extension you got there

kc
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Old 05-27-2007, 10:28 AM
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Default RE: F-20 Cermark set up info needed

C/G is 4 1/2" from the leading edge at the start of the wing saddle.

The following throws are recommended for early flights.

Elevator- 10 to 15 degrees
Ailerons- 10 to 20 degrees
Rudder- 15 to 25 degrees
Nosewheel- 10 to 15 degrees

Make darned sure the elevator servo cannot rip loose. The stock mounting is not
satisfactory. The servor comes loose, and the plane "lawn darts" into tiny pieces. []

Don't ask how I know this. Cyclic Hardover's plane was lost too, both on maiden flights. [X(]

I ended up actually bolting the servo through the elevator so it cannot possible come loose.

FBD.
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