[NSRCA-discussion] low profile JR servo?
george w. kennie
geobet at gis.net
Fri Feb 23 09:24:38 AKST 2007
Back in the ''70's I worked as a test tech for a company that manufactured these devices which were sold to companies that used them as control devices for CNC controlled machinery and they held to tolerances equal to some fractional equivalent of .001". I would guess that it might present some difficulty in moving a stick gimble in an increment small enough to negate the accuracy of the encoder.
G.
----- Original Message -----
From: Tony Stillman
To: 'NSRCA Mailing List'
Sent: Friday, February 23, 2007 9:16 AM
Subject: Re: [NSRCA-discussion] low profile JR servo?
I don't know.
Tony Stillman, President
Radio South
3702 N. Pace Blvd
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
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From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of J.Oddino
Sent: Thursday, February 22, 2007 6:08 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] low profile JR servo?
What is the resolution of the shaft encoder?
Jim
----- Original Message -----
From: Tony Stillman
To: 'NSRCA Mailing List'
Sent: Wednesday, February 21, 2007 8:28 AM
Subject: Re: [NSRCA-discussion] low profile JR servo?
Yes, it does.
Tony Stillman, President
Radio South
3702 N. Pace Blvd
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
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From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Dean Pappas
Sent: Wednesday, February 21, 2007 10:03 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] low profile JR servo?
Hi Tony,
Does the throttle channel use the same encoder? If so, then it must be some sort of absolute encoder.
Dean
Dean Pappas
Sr. Design Engineer
Kodeos Communications
111 Corporate Blvd.
South Plainfield, N.J. 07080
(908) 222-7817 phone
(908) 222-2392 fax
d.pappas at kodeos.com
-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Tony Stillman
Sent: Wednesday, February 21, 2007 9:50 AM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] low profile JR servo?
Gordon:
I am just passing along the info as the comment was made. I have the encoders in stock, as Futaba made a change in the production of the 14MZ and sent me new ones to change out when needed.
Tony Stillman, President
Radio South
3702 N. Pace Blvd
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
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From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Gordon Anderson
Sent: Wednesday, February 21, 2007 8:40 AM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] low profile JR servo?
The futaba 14MZ flyer I have says "Gimbals with long-life potentiometer, quad bearings, adjustable tension and detent."
In general encoders are not absolute positioning devices and you need to define "home". Resolvers are absolute positioning devices but larger and more costly.
--Gordon
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From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Tony Stillman
Sent: Wednesday, February 21, 2007 5:46 AM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] low profile JR servo?
The Futaba 14MZ uses shaft encoders on the sticks..
Tony Stillman, President
Radio South
3702 N. Pace Blvd
Pensacola, FL 32505
1-800-962-7802
www.radiosouthrc.com
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From: nsrca-discussion-bounces at lists.nsrca.org [mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Bob Richards
Sent: Wednesday, February 21, 2007 7:18 AM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] low profile JR servo?
Hah, I didn't even think about the stick pots. Seems that would be the first place they would try using shaft encoders.
Linear outputs from the servos would be great, also. Oh, wait a minute, that was done 35 years ago with the KPS-11 servos. Nevermind.... :-)
Bob R.
Earl Haury <ehaury at houston.rr.com> wrote:
Isn't technology great - $2000+ TX and $100+ servos with everything riding on a 50 cent pot on each end!
Earl
----- Original Message -----
From: Bob Richards
To: NSRCA Mailing List
Sent: Tuesday, February 20, 2007 8:37 PM
Subject: Re: [NSRCA-discussion] low profile JR servo?
When you say analog, I assume you are talking about the feedback loop? I wonder how long it will be until we get shaft encoders in our servos. Or, for that matter, the shaft encoder could be mounted to the control surface itself.
Bob R.
"J.Oddino" <joddino at socal.rr.com> wrote:
Correct. Well kind of. Actually all of our servos are analog but you are right, the super servos used the same principles as our modern "digital" servos.
Jim O
----- Original Message -----
From: Bob Richards
To: NSRCA Mailing List
Sent: Tuesday, February 20, 2007 1:22 PM
Subject: Re: [NSRCA-discussion] low profile JR servo?
I was under the impression that the "Super Servos" were actually first generation digital servos. Is that not correct?
Bob R.
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