Futaba 9c, Can I Slow My Retract Servo Down??
02-18-2003, 11:12 AM
#1
Junior Member
Thread Starter
Join Date: Dec 2002
Location: Broome western Australia
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Futaba 9c, Can I Slow My Retract Servo Down??
Can the 9c slow a high speed high torque servo down so the wheels don't slam up and down? 
thanks Marshy
thanks Marshy
02-18-2003, 01:47 PM
#2
Senior Member
Join Date: Oct 2002
Location: Philadelphia,
PA
Posts: 2,065
Likes: 0
Received 0 Likes
on
0 Posts
Futaba 9c, Can I Slow My Retract Servo Down??
Go to http://www.emsjomar.com/ and see the Gear and Door Sequencer listed under Electronic Accessories.
Dave Segal
Dave Segal
02-18-2003, 02:13 PM
#3
Member
My Feedback: (12)
Join Date: Dec 2001
Location: Baudette, MN
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
Hitec digital
Hello Marshy,
Another option might be a hitec digital. If you have, or know someone with the programmer, you can slow those servos down with the program.
Another option might be a hitec digital. If you have, or know someone with the programmer, you can slow those servos down with the program.
02-18-2003, 03:47 PM
#4
Junior Member
Thread Starter
Join Date: Dec 2002
Location: Broome western Australia
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Futaba 9c, Can I Slow My Retract Servo Down??
thanks for that i have a hitec but i live in a remote place and no one will have one!! i thought that the radio could do it???
but thanks for the reply.
Marshy
but thanks for the reply.
Marshy
02-20-2003, 04:09 PM
#9
Senior Member
My Feedback: (4)
Join Date: Jul 2002
Location: East Brunswick,
NJ
Posts: 390
Likes: 0
Received 0 Likes
on
0 Posts
5 point curve
Straight up expo I don't think it will do.
It will slow down at the end of one direction but it will be fast as hell at the end of the opposite direction.
I think the answer might be if you try to use one the mixes that have the 5 points in them. Program your gear channel as master and slave and then program the 2 top points close together so that the line between them is as flat as possible. Now do the same for the 2 bottom points. Point number 3 should stay in the middle.
The end result should be that the servo will be slow at the ends and fast in the middle.
But all that is just theory and I don't have a way to verify it until I get back home. :tired:
It will slow down at the end of one direction but it will be fast as hell at the end of the opposite direction.
I think the answer might be if you try to use one the mixes that have the 5 points in them. Program your gear channel as master and slave and then program the 2 top points close together so that the line between them is as flat as possible. Now do the same for the 2 bottom points. Point number 3 should stay in the middle.
The end result should be that the servo will be slow at the ends and fast in the middle.
But all that is just theory and I don't have a way to verify it until I get back home. :tired:
02-20-2003, 07:27 PM
#11
Senior Member
My Feedback: (1)
Join Date: Jan 2002
Location: OR
Posts: 205
Likes: 0
Received 0 Likes
on
0 Posts
Futaba 9c, Can I Slow My Retract Servo Down??
This should be pretty simple really. Just assign the landing gear to one of the dials or the left or right "trigger" levers and you should have a "manual" control over the servo position. someone correct me if I am wrong but I don't see why you can't do this.
02-20-2003, 07:54 PM
#12
Member
My Feedback: (9)
Join Date: Jan 2002
Location: Fresno,
CA
Posts: 79
Likes: 0
Received 0 Likes
on
0 Posts
servo slower
i have some plans that i downloaded...beautifully written instructions, templates, and even part numbers...if you are handy with a soldering iron, lemme know and i will email the info to you...by some guy in livermore calif...i will try to hunt them down in the meantime
02-20-2003, 11:31 PM
#14
My Feedback: (1)
Join Date: Feb 2002
Location: private, UNITED KINGDOM
Posts: 3,672
Likes: 0
Received 26 Likes
on
16 Posts
Futaba 9c, Can I Slow My Retract Servo Down??
Marshy, can we just be clear that you are using an "ordinary" servo and not a retract servo? Retract servos can not be slowed by any method at all as they are end to end devices, though I have heard that Airtronics do a proportional retract servo which would accept electronic slowing.
An ordinary servo can not be slowed by expo if used on a switch. Switches don't have expo for the simple reason there are no values between +100% and -100% for it to curve! Servo slowing is built in to some top end transmitters, or you can buy an add-on that plugs in between the Rx and servo. In either case you flick a switch which knocks the value from +100% to-100% instantly but the slowing electronics intervene and generate a travel value number sequence 99%, 98%, 97%,,,,,,-98%, -99%,-100%. That way the servo slowly follows the numbers it is being sent.
Without that you could do as flapbreaker suggests and manually move a proportional control at the speed you want though it could lead to problems and take your mind off flying the plane for those few seconds as you try to fiddle the lever.
Harry
An ordinary servo can not be slowed by expo if used on a switch. Switches don't have expo for the simple reason there are no values between +100% and -100% for it to curve! Servo slowing is built in to some top end transmitters, or you can buy an add-on that plugs in between the Rx and servo. In either case you flick a switch which knocks the value from +100% to-100% instantly but the slowing electronics intervene and generate a travel value number sequence 99%, 98%, 97%,,,,,,-98%, -99%,-100%. That way the servo slowly follows the numbers it is being sent.
Without that you could do as flapbreaker suggests and manually move a proportional control at the speed you want though it could lead to problems and take your mind off flying the plane for those few seconds as you try to fiddle the lever.
Harry
