[NSRCA-discussion] Direct Servo Drive
Richard Strickland
richard.s at allied-callaway.com
Mon Feb 13 13:52:14 AKST 2006
Youse guys are killin' me.
Richard (in KC) Unfortunately if we get a warm day--the wind seems to come along....
----- Original Message -----
From: John Ferrell
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 4:42 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
I understand and sympathize. Over hear on the East side of the mountains there were snow flurries seen on last Thursday morning somewhere in the county so they delayed school opening two hours...
John Ferrell
http://DixieNC.US
----- Original Message -----
From: Ed Miller
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 5:33 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
Yeah, TN sucks. My property taxes are 1/3 they were in NY and I tried but TN refuses to collect state income tax from me. Weather sucks as I long for those January and February days of shoveling snow, chipping ice, mind numbing cold and falling on my butt. I can drive a car around in my house ( full scale )...... Guaranteed immortality wouldn't get me to move back. Wait, is that a banjo I hear in the background ??? Ed M.
----- Original Message -----
From: Del K. Rykert
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 3:10 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
How absolutely revolting... to be flying a real 2m pattern ship in February.. and not be in the sun belt..
Del
nsrca - 473
----- Original Message -----
From: Scott Anderson
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 2:31 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
1 inch dusting in Knoxville, TN and going to be 60f on Tuesday.. Might just have to go fly :)
scott anderson
----- Original Message -----
From: Randy hatfield
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 2:18 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
I call it a re-use of the dining room. We had a 12 inch 'dusting' as well in DC. Black ice everywhere this morning. I am having fun turing Balsa in to mounds of saw dust.
Randy
----- Original Message -----
From: Dean Pappas
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 1:50 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
That's a padded room, right? I call it the workshop.
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 Grow Pattern
Sent: Monday, February 13, 2006 1:48 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Direct Servo Drive
Dean,
What snow?
It's only a 12" dusting.....Signed, ex Boston MA inmate....
You should just "get a room" for yourself and the "tuned-pipe-pundits", then talk 2-c's and pipes until the snow melts! That will keep you all sane! :-)))) John's RV is vacant right now.....
Evl-Eric.
----- Original Message -----
From: Dean Pappas
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 1:39 PM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
Yeah, John!
What ever happened to the "obvious to one skilled in the art" clause?
Maybe what is patented is the arrangement of servo-box, or extension arm ... in any case, this falls under the heading of re-patenting the wheel.
Granted, on a 3-D only setup, I'd hook up to the servo this way!
signed, snow covered in Joisey
A.K.A.
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 John Ferrell
Sent: Monday, February 13, 2006 1:30 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Direct Servo Drive
If that can be worthy of a patent, the inmates are in charge of the asylum!
John Ferrell
http://DixieNC.US
----- Original Message -----
From: Bob Richards
To: NSRCA Mailing List
Sent: Monday, February 13, 2006 9:08 AM
Subject: Re: [NSRCA-discussion] Direct Servo Drive
My feeling exactly.
Bob R.
Ed Alt <ed_alt at hotmail.com> wrote:
Never have seen it before, but I guess the main question I have concerns the potential for loss of effective torque transmitted to the control surface. I see that they claim it's better due to no losses. That would be true in the sense that you don't lose that little bit in the linkage friction etc., but if you only want, say, 25 degrees of surface throw each direction, it would appear that you would have to limit the servo travel to 25 degrees as well. If that's true, then you have less mechanical advantage for a given degree of movement for the surface, since you would normally have a servo traveling about doub! le that distance. The control surface speed would be quicker, assuming the load is handled without any blowback or slowdown of movement due to the effectively lower torque transmitted while moving. Maybe I'm not seeing it right, but it looks like it might not be such a good thing to use, unless you were already planning on having something close to a 1:1 correspondence of degrees of servo arm movement to degrees of surface travel.
Ed
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