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Peter Germann | 1st topic for discussion: F2B Model Specifications20.08.2002 - 16:48:07
Dear Friends!

This opens the discussion on F2B Model Specifications, as described
in the august 16 2002 version of the suggested rule as follows

QUOTE:

4.2.2 Model Definition and Specification

Powered control line aerobatic model aircraft in which al
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Tim Gee | 4.2.2.e &4.2.2.f21.08.2002 - 02:10:03
Peter, apologies for jumping the gun earlier. Here are some of my thoughts:

1. I don't think the drafting of these two regulations achieves the intentions of the rationalle:

Under 4.2.2.f, The "secondary control" functions allow for, among other things, the "control of
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24
Bill Lee | 4.2.2 Model Definition and Specification Paragraph22.08.2002 - 01:12:48
> e)  Primary Control Function. Control of model flying height shall only be performed by mechanically-activated flight
control elements. This function must be controlled by a hand-held control handle manipulated by the pilot located on the
ground at the centre of the model''s flight
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Richard Spurling | Re: 4.2.2 Model Definition and Specification Parag22.08.2002 - 02:56:22
"mechanically activated flight
control elements which control the pitch and/or yaw of the aircraft".
Unfortunately Bill, increasing the power can also change the pitch of a model. The Rabe rudder affects the yaw of a model and could be described as automatic in that it is not driven by th
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Bill Lee | Re: 4.2.2 Model Definition and Specification Parag22.08.2002 - 03:37:22
Richard wrote:
"The Rabe rudder affects the yaw of a model and could be described as automatic in that it is not driven by the pilot directly."

As I understand the Rabe Rudder, it is mechanically connected to the other aerodynamic controls, and is, hence, directly/mechanically contro
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37
Richard Spurling | Re: 4.2.2 Model Definition and Specification Parag22.08.2002 - 05:10:22
Bill wrote: "As I understand the Rabe Rudder, it is mechanically connected to the other aerodynamic controls, and is, hence, directly/mechanically controlled by the pilot in the same manner as the flaps and elevators.

Am I missing something"

No Bill, you aren't missing anythin
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Igor Burger | Re: 4.2.2 Model Definition and Specification Parag22.08.2002 - 08:53:25
Guys,

I think the word >>>Automatic<<< is not right on this place. I think elevator deflects itself >>>automatically<<< as hand is moved and it is OK I think. In my eyes, we should allow all automatic tricky devices like flaps deflected with elevator, landing flaps with stopped engine, or
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39
George Mullerleili | Re: 4.2.2 Model Definition and Specification Parag09.09.2002 - 04:25:31
How about:
all aerodynamic controls of the flight path(rudder, elevator, flaps, spoilers, etc) must be driven by
a mechanical connection to the flying lines connected to the pilot's control handle.
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