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HomeAircraftHelicopterFlybarless Rotor Head SystemsFutaba CGY › Inflight tuning and bench setup question
12-30-2013 08:19 PM  4 years agoPost 1
ssmith512

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Indianapolis, IN USA

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Couple of questions:

Bench setup (V1.31) - setting up the cyclic rates, I use the AFR's to get the model to 8-10 degrees of aileron or elevator cyclic pitch (matching the AFR value for the elevator or aileron respectively). Then after collective pitch is set, adjust the Swash Ring value to provide the maximum allowable swashplate movement with no binding. Is that correct?

What kind of flight characteristic differences would one expect if the same model/same blades were setup with 8 degrees of cyclic versus 10 degrees of cyclic?

Inflight tuning - (hypothetical scenario) flying the model let's say in Flight Mode 3, I am comfortable with the max flip and roll rate, but I feel the model to be too "twitchy" or sensitive just off center stick. I add exponential in the TX to try and tame the model's reaction off center stick, but I am finding that I am having to add so much exponential that the model then has an uncomfortable "non-linear" feel around 50% stick throw (right around the "hump" in the exponential curve). Would my next tuning step be to remove the expo from the TX, drop down to Flight Mode 2 adjust the ANG Rate to get the flip and roll rates back upto near what I had in Flight Mode 3, adjust expo as necessary?

Sorry for asking a question that could very easily be tested by myself, but being winter, outdoor conditions are not conducive and probably wont be for 3-4 months for me to get outside to test. So I am bored and thinking about what can be done come this Spring.

Thanks in advance!

Steve

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01-01-2014 02:31 AM  4 years agoPost 2
Dr.Ben

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Richmond, VA, USA

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Couple of questions:
Bench setup (V1.31) - setting up the cyclic rates, I use the AFR's to get the model to 8-10 degrees of aileron or elevator cyclic pitch (matching the AFR value for the elevator or aileron respectively). Then after collective pitch is set, adjust the Swash Ring value to provide the maximum allowable swashplate movement with no binding. Is that correct?

>>Correct
What kind of flight characteristic differences would one expect if the same model/same blades were setup with 8 degrees of cyclic versus 10 degrees of cyclic?

>>Inadequate cyclic rate and potentially poor flight performance due to inadequate compensation headroom.

Inflight tuning - (hypothetical scenario) flying the model let's say in Flight Mode 3, I am comfortable with the max flip and roll rate, but I feel the model to be too "twitchy" or sensitive just off center stick. I add exponential in the TX to try and tame the model's reaction off center stick, but I am finding that I am having to add so much exponential that the model then has an uncomfortable "non-linear" feel around 50% stick throw (right around the "hump" in the exponential curve). Would my next tuning step be to remove the expo from the TX, drop down to Flight Mode 2 adjust the ANG Rate to get the flip and roll rates back upto near what I had in Flight Mode 3, adjust expo as necessary?
Sorry for asking a question that could very easily be tested by myself, but being winter, outdoor conditions are not conducive and probably wont be for 3-4 months for me to get outside to test. So I am bored and thinking about what can be done come this Spring.
Thanks in advance!

>>Steve, leave it in FM 3, keep the transmitter expo at no more than (-) 20-30% to avoid the issue you observed, and go into the ail and ele expert menus and increase the control IN and OUT delays for AIL and ELE a point at a time until you get the feel you want.

>>Overal the system flies best with a solid 10D or even a bit more static cyclic pitch.

Ben Minor

Peak Aircraft/Team Minicopter Team Futaba Team Kontronik USA

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01-01-2014 10:44 PM  4 years agoPost 3
ssmith512

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Indianapolis, IN USA

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TX Doc!

As always I appreciate the help!

Steve

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