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Old 06-15-2012, 04:54 AM   #1 (permalink)
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Default Slow reaction in one direction

I'm flying a Trex 600 EFL Pro with Beast X, when I invert the heli by pulling back on the stick or sideways she inverts nicely & quickly. But when I push the stick forward she goes over very slowly & I have to make sure that I have plenty of height.

Looking at the swash plate, the travel looks even in all directions & the speed of travel seems consistant.

Any ideas anyone as this has got me stumped?
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Old 06-15-2012, 12:47 PM   #2 (permalink)
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I can se that you have a Futaba. On Futaba radios the travel of the servos is done for each side. I think that maybe you have more throv back- than forwards?
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Old 06-16-2012, 03:46 AM   #3 (permalink)
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Quote:
Originally Posted by pxpep View Post
I can se that you have a Futaba. On Futaba radios the travel of the servos is done for each side. I think that maybe you have more throv back- than forwards?
The swash plate travel is the same in both directions but I'll check the setup again & see if I can get more forward without binding
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Old 06-16-2012, 09:02 AM   #4 (permalink)
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Swash plate travel on the ground is irrellevant. This is an FBL system and as a consequence, when sat on the ground, it will nearly always show you full travel, up to the limits set in the FBL controller itself, step L as it happens in this case. This is because by moving your stick you request an action from your heli, the FBL controller tries to deliver this, but nothing happens, so it gives more to achieve this but still nothing happens, so it gives more and more and more, until it is at full throw.

However, when you want to tune the rotation rate, or speed of rolls or flips in the air, the controller responds to the size of the Tx signal to deliver a given rate, so, as mentioned, if the ATV for forward elevator is lower than that set for backward elevator then this would result in the differential rates that you have observed, even though on the ground there appears to be no difference.

Cheers

Sutty
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Old 06-25-2012, 02:57 AM   #5 (permalink)
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Quote:
Originally Posted by sutty View Post
Swash plate travel on the ground is irrellevant. This is an FBL system and as a consequence, when sat on the ground, it will nearly always show you full travel, up to the limits set in the FBL controller itself, step L as it happens in this case. This is because by moving your stick you request an action from your heli, the FBL controller tries to deliver this, but nothing happens, so it gives more to achieve this but still nothing happens, so it gives more and more and more, until it is at full throw.

However, when you want to tune the rotation rate, or speed of rolls or flips in the air, the controller responds to the size of the Tx signal to deliver a given rate, so, as mentioned, if the ATV for forward elevator is lower than that set for backward elevator then this would result in the differential rates that you have observed, even though on the ground there appears to be no difference.

Cheers

Sutty
Thanks Sutty

I've re-done the settings on the Beast X but the weather's been cr*p here so I haven't had a chance to test it.

How would I check the ATV on the forward elevator?

Cheers

Adam
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Old 07-17-2012, 11:12 AM   #6 (permalink)
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I think I've solved the problem.

The end points on the elevator were (somehow) set to 50% / 100%. so I've put them to 100% on both.

This should solve the issue though how the end point went to 50% is a mystery as it was setup on a new model memory.

I will do a re-setup before flying & also update the firmware to V 3 whatever the latest is, but I'm away at the moment so all this will have to wait 'till I'm back on the beach
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Old 07-20-2012, 04:54 PM   #7 (permalink)
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I'll bet you have it licked.
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Old 07-26-2012, 01:54 PM   #8 (permalink)
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Hope so, haven't had a chance to test it yet as I'm away at the moment
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