can you use hh in light 3d moves

can you use hh in light 3d moves
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can you use hh in light 3d moves - 5/15/2008 9:49:03 PM

ronmad02

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Joined: 8/6/2006
From: Toledo, OH, USA
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My question is should I be switching to rate when I try light 3d moves ie. rolls loops and flips? I have a gy240 so I have to switch the gyro by hand if this is the case . The other question what will happen if I do keep it in hh mode while doing the moves?

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RE: can you use hh in light 3d moves - 5/15/2008 9:56:40 PM

Druss

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HH is better for 3D moves, rate mode is really only good for setting up the gyro and for scale flying otherwise in 3D the tail will tend to follow the nose instead of holding it's heading (therefore the head holding mode).

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RE: can you use hh in light 3d moves - 5/16/2008 12:39:34 AM

ronmad02

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From: Toledo, OH, USA
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ok then whats the deal with like the 401 when you idle up does it go into rate or heading hold I was under the impression it went into rate mode. Or am I way off with the way it works.

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RE: can you use hh in light 3d moves - 5/16/2008 12:54:03 AM

rftusa2008

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From: pinole, CA, USA
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I have DX7 and 401. The gyro is set in the gear channel as gyro. I get gyro sense menu on my transmitter. Anything 50% or less is in rate mode. Mine is set to 72% so I'm in HH mode. That's my understanding anyways. I change it to less than 50% when I'm setting up the gyro and tail servo or else the gyro will be moving the tail servo while moving the heli around.

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RE: can you use hh in light 3d moves - 5/16/2008 1:23:58 PM

BarracudaHockey

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Most of us fly in heading hold at all times. If Tippy is around he's a throw back to flying in rate mode, and a few of the scale guys do but for the most part we use heading hold all the time. Anything backwards requires it.

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RE: can you use hh in light 3d moves - 5/16/2008 2:33:49 PM

HeliSmith

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You "can" set the gyro to go into rate mode when you switch flight modes. (When you switch to IDLE UP) You would remember setting this up though this is definately not a default thing but you didn't list your radio so that isn't in concrete.

A lot of people are confused by the fact that the light on the gyro will blink when it is receiving input. This gets even more confusing if you add trim then even when you plug in it will be blinking. In rate mode the light is off on a 401 although I don't have a 240 I believe it would be the same.

Rate mode requires you to set it up, it is an extensive setup and may require some revo mixing to keep your tail from kicking on massive throttle/collective input. HH mode is simple to setup and reliable.

P.S. You never trim a HH mode gyro it should hold on it's own. If you are trimming you probably aren't centered on your tail so you need to setup "in rate mode".

< Message edited by HeliSmith -- 5/16/2008 2:35:30 PM >

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RE: can you use hh in light 3d moves - 5/16/2008 4:05:10 PM

Skarn

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From: Pasadena, MD, USA
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quote:

ORIGINAL: ronmad02

ok then whats the deal with like the 401 when you idle up does it go into rate or heading hold I was under the impression it went into rate mode. Or am I way off with the way it works.

Way off

As the others have said, the 401 will go into rate or HH mode on how you set up your radio. For me, I have all flight modes set for 72% gain which is HH mode. I never use rate mode.

Skarn

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RE: can you use hh in light 3d moves - 5/16/2008 4:34:32 PM

BarracudaHockey

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quote:

This gets even more confusing if you add trim then even when you plug in it will be blinking. In rate mode the light is off on a 401 although I don't have a 240 I believe it would be the same.

If you add trim and then reboot the gyro it will memorize that as the new neutral position at boot up and will come on solid. If you have a radio that has different trims in differnt flight modes and the trim is different from when it boots up then it will flash.
A double flash, pause, double flash....... means the gyro is getting a trim or rudder input.
A slow single flash is an error and means its not initialized properly.

The 240 has no remote gain, nor an LED, its got a DIP switch on the top of the gyro to switch between AVC and rate mode.

< Message edited by BarracudaHockey -- 5/16/2008 4:35:13 PM >

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RE: can you use hh in light 3d moves - 5/17/2008 3:27:15 AM

ronmad02

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From: Toledo, OH, USA
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Thanks guys this is very helpfull. Like I said befor I have the 240 the radio is a futaba 6ex 2.4 I like the setup and seems to work very well. My tail isnt rock solid so It looks like i need to reset the gyro in rate mode and try again. Also on a diff note is it normal for the heli to lose altitude when you go side to side with the cyclic. I can have a good hover and need to adjust sideways to comp for wind and it will lose altitude I believe its only to the left looking at it from the tail.

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RE: can you use hh in light 3d moves - 5/17/2008 4:02:47 AM

321

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From: Fruitland Park, FL, USA
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I learned to fly backwards with a 240 in RATE mode. It can be done, but with that being said I have no plans to do it again because there is so much less pilot work load using AVCS mode. AVCS (heading hold) mode works pretty good for all types of flying. You'll want to be a master of the rudder before you try barrel rolls though, LOL.

quote:

Also on a diff note is it normal for the heli to lose altitude when you go side to side with the cyclic. I can have a good hover and need to adjust sideways to comp for wind and it will lose altitude I believe its only to the left looking at it from the tail.

Yes, pretty much. Any time the main rotor disk tilts from the true horizontal, with all else being equal, its thrust is no longer straight down opposing gravity which means more thrust will be required to hold an altitude. It makes sense that you need more lift with a tilted rotor disk since it not only supports the weight of the model, but also moves the helicopter through the air around it (either to hold a position in the wind and/or to move the heli).

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