Programming 9C
10-01-2006 | 05:29 AM
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From: Frampton-on-Severn, UNITED KINGDOM
Programming 9C
Bax / Krysta
Just got my first electric sailplane and to keep sticks alike across all my planes (gliders), I have set up spoilerons on the throttle stick using the crow/butterfly programme. No problems here.
I have therefore decided to use the VRD slider to operate the throttle. I was a bit concerned because the slider has a centre point rather than one movement like a throttle stick and I wondered what the ESC would make of it all. No problems though. No motor for about the first 15% or so of movement and then the motor revs up to full power as the slider moves all the way forward.
The sailplane needs some down elevator as the power increases so I decide to mix VRD to elevator. Well what happens is that I get a large amount of up elevator trim as the VRD moves from one extreme, through it's centre point and then the down trim I want as it approaches the other extreme. Logical, I know but I don't want the up trim, just down trim through to 25% of elevator movement or whateve I set up, for when the motor reaches full revs.
I've tried using mixes 6 and 7 to set a curve but they won't let me set VRD as the master.
Somewhere in the back of my mind, I'm thinking 'mix offset' but I can't figure it out?
Help wanted please, I can't find the answer in the Futaba FAQ
Just got my first electric sailplane and to keep sticks alike across all my planes (gliders), I have set up spoilerons on the throttle stick using the crow/butterfly programme. No problems here.
I have therefore decided to use the VRD slider to operate the throttle. I was a bit concerned because the slider has a centre point rather than one movement like a throttle stick and I wondered what the ESC would make of it all. No problems though. No motor for about the first 15% or so of movement and then the motor revs up to full power as the slider moves all the way forward.
The sailplane needs some down elevator as the power increases so I decide to mix VRD to elevator. Well what happens is that I get a large amount of up elevator trim as the VRD moves from one extreme, through it's centre point and then the down trim I want as it approaches the other extreme. Logical, I know but I don't want the up trim, just down trim through to 25% of elevator movement or whateve I set up, for when the motor reaches full revs.
I've tried using mixes 6 and 7 to set a curve but they won't let me set VRD as the master.
Somewhere in the back of my mind, I'm thinking 'mix offset' but I can't figure it out?
Help wanted please, I can't find the answer in the Futaba FAQ
10-17-2006 | 01:00 PM
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From: Champaign, IL
RE: Programming 9C
Hi Marcellus,
I have worked on this a few days now for you, but as you know we are limited to not being able to use VRD with an Offset mix.
The closest I can get for you is to do a mix with VRD as Master, Elevator as Slave, switch Null, I set my rate to 15% THEN with VRD at the lowest point down, I manually took off my servo horn, centered the elevator servo and reattached the horn. Now I can do what you are wanting to do, but this also totally messed with the center point, so I had to do my best to readjust in the Butterfly menu and ATV.
Unfortunately, this is the only option I found to do this.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
I have worked on this a few days now for you, but as you know we are limited to not being able to use VRD with an Offset mix.
The closest I can get for you is to do a mix with VRD as Master, Elevator as Slave, switch Null, I set my rate to 15% THEN with VRD at the lowest point down, I manually took off my servo horn, centered the elevator servo and reattached the horn. Now I can do what you are wanting to do, but this also totally messed with the center point, so I had to do my best to readjust in the Butterfly menu and ATV.
Unfortunately, this is the only option I found to do this.
I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.
Sincerely,
Krysta Hunt
Product Development & Support Specialist
Futaba Service Center USA
ORIGINAL: marcellus
Bax / Krysta
Just got my first electric sailplane and to keep sticks alike across all my planes (gliders), I have set up spoilerons on the throttle stick using the crow/butterfly programme. No problems here.
I have therefore decided to use the VRD slider to operate the throttle. I was a bit concerned because the slider has a centre point rather than one movement like a throttle stick and I wondered what the ESC would make of it all. No problems though. No motor for about the first 15% or so of movement and then the motor revs up to full power as the slider moves all the way forward.
The sailplane needs some down elevator as the power increases so I decide to mix VRD to elevator. Well what happens is that I get a large amount of up elevator trim as the VRD moves from one extreme, through it's centre point and then the down trim I want as it approaches the other extreme. Logical, I know but I don't want the up trim, just down trim through to 25% of elevator movement or whateve I set up, for when the motor reaches full revs.
I've tried using mixes 6 and 7 to set a curve but they won't let me set VRD as the master.
Somewhere in the back of my mind, I'm thinking 'mix offset' but I can't figure it out?
Help wanted please, I can't find the answer in the Futaba FAQ
Bax / Krysta
Just got my first electric sailplane and to keep sticks alike across all my planes (gliders), I have set up spoilerons on the throttle stick using the crow/butterfly programme. No problems here.
I have therefore decided to use the VRD slider to operate the throttle. I was a bit concerned because the slider has a centre point rather than one movement like a throttle stick and I wondered what the ESC would make of it all. No problems though. No motor for about the first 15% or so of movement and then the motor revs up to full power as the slider moves all the way forward.
The sailplane needs some down elevator as the power increases so I decide to mix VRD to elevator. Well what happens is that I get a large amount of up elevator trim as the VRD moves from one extreme, through it's centre point and then the down trim I want as it approaches the other extreme. Logical, I know but I don't want the up trim, just down trim through to 25% of elevator movement or whateve I set up, for when the motor reaches full revs.
I've tried using mixes 6 and 7 to set a curve but they won't let me set VRD as the master.
Somewhere in the back of my mind, I'm thinking 'mix offset' but I can't figure it out?
Help wanted please, I can't find the answer in the Futaba FAQ
10-17-2006 | 04:49 PM
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From: Frampton-on-Severn, UNITED KINGDOM
RE: Programming 9C
Hi Krysta,
That's the solution I came up with too. Fortunately I have enough 'mechanical advantage' in my linkages, so I still get enough up elevator in the normal flying mode, motor off, with the servo arm offset. I thought it was a bit of a 'heath Robinson' solution but it works and with just 7% elevator comp., my sailplane now climbs like a demon but no longer like a rocket, if you know what I mean!!
Thanks again...
That's the solution I came up with too. Fortunately I have enough 'mechanical advantage' in my linkages, so I still get enough up elevator in the normal flying mode, motor off, with the servo arm offset. I thought it was a bit of a 'heath Robinson' solution but it works and with just 7% elevator comp., my sailplane now climbs like a demon but no longer like a rocket, if you know what I mean!!
Thanks again...
