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 Tiger Shark Balance Point?????

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Old 12-10-2007, 07:00 PM
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Default F-20 Tiger Shark Balance Point?????

Hey F-20 Experts,

I bought a F-20 at a swap meet & want to check the balance point.

I don't actually know what brand it is but has the specs of,

Built up construction balsa, No foam at all.

W.S. 47" Swept Leading Edge

Length 51-1/2"

I'm putting a 46FX on it & want to be sure & hope someone can help out.

Could be Direct Connection, Juno, Phoenix ????

Thanks, Mike
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Old 12-11-2007, 10:22 AM
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Default RE: F-20 Tiger Shark Balance Point?????

A pic would be helpful
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Old 12-11-2007, 12:05 PM
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Default RE: F-20 Tiger Shark Balance Point?????

....yes, we need a pic of the rear of the plane. I have the specs on the Cermark F-20.

The Cermark has the fat rear end.

(wisecrack about Vic omitted )

FBD.
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Old 12-11-2007, 12:34 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Builder confirmed it is a Direct Connection kit & yes it does have the fat tail.

Thanks, Mike
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Old 12-11-2007, 12:51 PM
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Default RE: F-20 Tiger Shark Balance Point?????

I have a set of plans at home, I will check them this evening.

Dave, It's not the rear end that's fat it's the area above the belt in front that causes my alarm.[8D]
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Old 12-11-2007, 02:21 PM
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Default RE: F-20 Tiger Shark Balance Point?????

I have the DC kit in a box....I'll look at the plans.....

.... " 5-3/4" back from the leading edge where the wing meets the fuselage". The plane
should be balanced up-side down on the balancer.

I can tell from experience with my Cermark....be sure to balance it laterally as well.

FBD.
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Old 12-11-2007, 09:17 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Dabnabit Dave, ya beat me to it.

Do you need throw info too?
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Old 12-11-2007, 09:25 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Yes, I will take all info that you can give me.

Thanks , Mike
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Old 12-11-2007, 09:58 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Aileron 3/16-1/4 up and down
Elevator 1/4-3/8 up and down
Rudder 3/4-1" left and right
Throttle wide ***** open baby!!![sm=bananahead.gif][sm=stupid.gif]
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Old 12-11-2007, 11:10 PM
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Default RE: F-20 Tiger Shark Balance Point?????


ORIGINAL: vicman

Dabnabit Dave, ya beat me to it.
.....yo gotta keep the speed up...."sonny".....heh, heh, heh.

Pappy.
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Old 12-11-2007, 11:50 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Thanks guys for the info.

As far as throttle position, Is there any other way??

Mike
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Old 12-11-2007, 11:53 PM
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Default RE: F-20 Tiger Shark Balance Point?????


ORIGINAL: mfracer@itctel.com

Thanks guys for the info.

As far as throttle position, Is there any other way??

Mike
....nope....WFO.

FBD.
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Old 12-12-2007, 09:29 AM
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Default RE: F-20 Tiger Shark Balance Point?????

DC eh? Not by the ***** end of it. The stab is on the bottom, the tail cone and that other thing. Looks closer to a Cermark or Kangke. The whole fuselage from the wing on back is too thick. c'mon guys!

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Old 12-12-2007, 10:14 PM
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Default RE: F-20 Tiger Shark Balance Point?????

C'mon CH, Sober up!!
That pic is of Dave's Cermark. Read the whole thread dude.
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Old 12-12-2007, 11:40 PM
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Default RE: F-20 Tiger Shark Balance Point?????

Hey thats Dave's Cermark!
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Old 12-13-2007, 12:25 AM
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Default RE: F-20 Tiger Shark Balance Point?????

Yo, Cyclic....

....do you still have your yellow plane ?
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Old 12-13-2007, 07:16 AM
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Default RE: F-20 Tiger Shark Balance Point?????

Nah,
He doesn't have one with working nosegear yet either.

But he does have a b#$chin Cub.
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