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Model Forum / Radio Controlled / Air Models / March 2009Potentiometer Elements
No picture yet, but: Deep in the heart of every RC servo there's a pot, and it comes in three pieces -- the rotor is attached to the output shaft, the element is on a little puck with three wires soldered onto it, and the whole thing is held together by the servo frame. The bits used to be manufactured by Clarostat, but "www.clarostat.com" gets me the Honeywell website and a bunch of heavy-iron industrial position sensing things that absolutely positively don't apply here. Anyone know where I can start looking for these? I've got a dead, antique servo I'd like to revive.  Signaturehttp://www.wescottdesign.com >No picture yet, but: > [quoted text clipped - 9 lines] >Anyone know where I can start looking for these? I've got a dead, >antique servo I'd like to revive. No one is allowed to do that sort of experimentation on their own anymore. For guidance you must consult the appropriate government agency. ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | With the introduction of Obama's carbon taxes it is likely that my annual energy costs will double. But I'll make up that cost by dismissing my maid, landscape and swimming pool maintenance services. I'll also stop tipping when I go out to eat. But I won't worry... Obama will take care of all those folks. They probably voted Democrat anyway ;-) >>No picture yet, but: >> [quoted text clipped - 15 lines] > > ...Jim Thompson Here I saw your name and thought "oh, he's just the sort of old-timer polymath who would know". Instead I get cynicism. Well Thank You Mr. Diogenes (:-). Signaturehttp://www.wescottdesign.com >>>No picture yet, but: >>> [quoted text clipped - 20 lines] > >Well Thank You Mr. Diogenes (:-). Actually I'm looking. I may have that information in my files. I did an RC receiver plus multi-servo decoder chip design around ten years back. I also did some designs for Clarostat in the far past. ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Obama's "stimulus" package has more pork in it than a pig farm >>>>No picture yet, but: >>>> [quoted text clipped - 36 lines] > > Obama's "stimulus" package has more pork in it than a pig farm Does anyone remember those fantastic Allen-Bradley plastic element pots that were used for transmitter sticks so many years ago? Or how about the open gimbal D&R stick assemblies that used servo pots and which needed cleaning every couple of weeks? Argh!!! Ed Cregger >>>>>No picture yet, but: >>>>> [quoted text clipped - 31 lines] >Does anyone remember those fantastic Allen-Bradley plastic element pots that >were used for transmitter sticks so many years ago? I remember them quite fondly. The durability was not quite up to spec sometimes. >Or how about the open gimbal D&R stick assemblies that used servo pots and >which needed cleaning every couple of weeks? Argh!!! > >Ed Cregger >>No picture yet, but: >> [quoted text clipped - 28 lines] > But I won't worry... Obama will take care of all those folks. > They probably voted Democrat anyway ;-) Where did you read anything about Obama promoting the implementation of carbon taxes since he has taken office? I think you are going to see less far left behavior from Obama than we had far right behavior from Bush. If these folks have any sense at all (note; I did say IF) they will realize that America has had its fill of extremism in any form. Left or right. Me, I'm dead center and I hate "isms" or "ists" of any kind. I'm even suspicious of centrists. Ed Cregger >>>No picture yet, but: >>> [quoted text clipped - 31 lines] >Where did you read anything about Obama promoting the implementation of >carbon taxes since he has taken office? Just yesterday, on the news, taxing basically all forms of present energy forms. >I think you are going to see less far left behavior from Obama than we had >far right behavior from Bush. If these folks have any sense at all (note; I [quoted text clipped - 5 lines] > >Ed Cregger I hope you're right, but I think you should listen to the news more carefully... like avoid the pabulum networks. Even the BBC has it pretty much straight up. ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | Obama's "resume" would fit in a Chinese fortune cookie And which "news" sources do you listen to? Let me guess, Rush Limbaugh... Ed Cregger >>>>No picture yet, but: >>>> [quoted text clipped - 60 lines] > > Obama's "resume" would fit in a Chinese fortune cookie >And which "news" sources do you listen to? > >Let me guess, Rush Limbaugh... > >Ed Cregger You leftist weenies need to do less "guessing". I've stated here for years that I don't like, nor listen to, Rush. The info came from the BBC, quoting Rahm Emanuel. Not that I care. The more damage that can be done to low life leftist weenies, when they can't even afford gasoline, the better the world will be ;-) >>>>>No picture yet, but: >>>>> [quoted text clipped - 60 lines] >> >> Obama's "resume" would fit in a Chinese fortune cookie ...Jim Thompson | James E.Thompson, P.E. | mens | | Analog Innovations, Inc. | et | | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | | Phoenix, Arizona 85048 Skype: Contacts Only | | | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | | E-mail Icon at http://www.analog-innovations.com | 1962 | I love to cook with wine Sometimes I even put it in the food >>And which "news" sources do you listen to? >> [quoted text clipped - 4 lines] > You leftist weenies need to do less "guessing". I've stated here for > years that I don't like, nor listen to, Rush. I voted for Nixon and Reagan. Does that make me a Leftist Weenie? Ed Cregger >>>And which "news" sources do you listen to? >>> [quoted text clipped - 6 lines] > >I voted for Nixon and Reagan. Does that make me a Leftist Weenie? Rumor has it you voted for them both at the same time. At the very least, it makes you akin to a labor lobbyist. -- Ray I grew up in a blue collar union family. Naturally, I was obligated to switch sides, just to be contrary. Boy do I miss those days in my later years. As I said, I'm a Centrist, of sorts. I like good ideas from both sides of the political spectrum. Anyone read Alvin Tofler's "Future Shock" back when it first came out? He was dead on as to how things would be and our generation would be the one to take the change to a one world government the hardest. He was way ahead of his time. I'm through with politics on the RC group for now. Ed Cregger >>>>And which "news" sources do you listen to? >>>> [quoted text clipped - 11 lines] > -- > Ray > "Jim Thompson" <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote in >> With the introduction of Obama's carbon taxes it is likely that my >> annual energy costs will double. But I'll make up that cost by [quoted text clipped - 5 lines] > Where did you read anything about Obama promoting the implementation of > carbon taxes since he has taken office? It's in his budget proposal, which budgets ~$700 billion in cap-n-trade revenues (taxes). Cheers, James Arthur >> "Jim Thompson" <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote in > [quoted text clipped - 13 lines] > Cheers, > James Arthur We (USA) did not sign the Kyoto Accord. We have no obligation to do anything regarding carbon quotas. Let's bombard the a.sholes in Congress with phone calls and express dissatisfaction over this nonsense. Ed Cregger > "Jim Thompson" <To-Email-Use-The-Envelope-Icon@My-Web-Site.com> wrote in >> [quoted text clipped - 12 lines] > did say IF) they will realize that America has had its fill of extremism in > any form. Left or right. Well, he came in whining "Hey, I inherited this deficit!" and his first official act as prez is to add another trillion in pork-barrel spending to it. Plus, he left the entire Cheney/Bush Gestapo in place, and kept Cheney/Bush's own secretary of "defense". I think by 2012 or sooner, America will look more like the Soviet Union than like the America our Founding Fathers envisioned. So, watch your jewels, and stock up on canned goods and ammo. BTW, I'm not a "centrist". I'm an extremist. My cause is Individual Liberty. To paraphrase, Freedom is my worship word. Cheers! Rich > No picture yet, but: > [quoted text clipped - 11 lines] > Anyone know where I can start looking for these? I've got a dead, > antique servo I'd like to revive. Why not cannibalize another servo? Or even ebay. Cheers >> No picture yet, but: >> [quoted text clipped - 18 lines] > > Cheers The pot is pretty much _the_ wear item, there's not much point to that. Signaturehttp://www.wescottdesign.com > No picture yet, but: > [quoted text clipped - 9 lines] > Anyone know where I can start looking for these? I've got a dead, > antique servo I'd like to revive. Allied Electronics has the Honeywell/Clarostat pots as well as others. 2332 total according to a search on their site-- https://www.alliedelec.com/Search/SearchResults.aspx?sid=11FCE453D26F&Ntt=potent iometers&No=0&N=0&Ntk=Primary You can also call them for help at 1-866-433-5722 SignatureAnyolmouse >> No picture yet, but: >> [quoted text clipped - 16 lines] > https://www.alliedelec.com/Search/SearchResults.aspx?sid=11FCE453D26F&Ntt=potent iometers&No=0&N=0&Ntk=Primary > You can also call them for help at 1-866-433-5722 There were two other manufacturers of pot elements that would fit in those applications. I know because I've used all three brands. Now all I have to do is remember their names. It will come to me. I used to build R/C systems from kits in the Seventies as well as buy already built R/C systems. I fell into using Ace Bantam Midget servos and their 7-channel Ace Commander receives. I even built one of their three channel and one of their seven channel transmitter kits. The servos and the Tx boxes all used the same type of pot elements. Ace sometimes stocked all three brands of pot elements, so if someone has an old Ace catalog, you might be able to find the manufacturer's names of the other two brands besides Clarostat. Good luck. Ed Cregger >>> No picture yet, but: >>> [quoted text clipped - 31 lines] > >Ed Cregger My mind keeps kicking in Ohmite (IRC?) for another good brand from the olden days. >>>> No picture yet, but: >>>> [quoted text clipped - 35 lines] > My mind keeps kicking in Ohmite (IRC?) for another good brand from the > olden days. Bournes is another potentiometer manufacturer. http://www.bourns.com/ Readily available thru Newark Electronics http://www.newark.com/jsp/brand/brands.jsp?mfg=BOUR&CMP=KNC-G10000058&HBX_PK=bou rns+potentiometers&HBX_OU=50 Geezer > On Wed, 4 Mar 2009 07:06:57 -0500, "Ed Cregger" > [quoted text clipped - 44 lines] > My mind keeps kicking in Ohmite (IRC?) for another good brand from the > olden days. Clarostat, Bournes, Ohmite... Some of the old ones were massive and works of art. How did these outfits survive into the digital age? Now even the trimmers on the back of CRT's and TV's have gone away with the big tube. What's left for potentiometers, some volume controls? Even in that application they're getting rare. Even some of the rotary knob volume controls are digital detent encoders. >No picture yet, but: > [quoted text clipped - 9 lines] >Anyone know where I can start looking for these? I've got a dead, >antique servo I'd like to revive. --- http://new.vishay.com/docs/57042/157.pdf JF >>No picture yet, but: >> [quoted text clipped - 12 lines] >--- >http://new.vishay.com/docs/57042/157.pdf http://www.newark.com/jsp/search/browse.jsp;jsessionid=1AJT4313BPNK2CXDUZ1G3PQ?N =1001531+255981&_requestid=199688 JF > No picture yet, but: > [quoted text clipped - 11 lines] > > --http://www.wescottdesign.com Not to deviate from all the political BS, but... If you need a _real_ servo pot - try http://precisionsales.com/ They've sold us some special pots so we could resurrect some old equipment. Hope that helps! -f > No picture yet, but: > [quoted text clipped - 9 lines] > Anyone know where I can start looking for these? I've got a dead, > antique servo I'd like to revive. http://www.potentiometers.com/ has the best selection of traditional design pots I've seen on line. Signaturehttp://improve-usenet.org/index.html Goggle Groups, and Web TV users must request to be white listed, or I will not see your messages. If you have broadband, your ISP may have a NNTP news server included in your account: http://www.usenettools.net/ISP.htm The real problem is that the parts are built overseas. (China, etc) Without the exact specs or a general knowledge of where the parts were and are made, you are out of luck. I have some old Heathkit (circa 1970's) servos that, except for the pots, "should be" usable if rewired. The Heathkit servos had two power leads, ground, and signal. > No picture yet, but: > [quoted text clipped - 9 lines] > Anyone know where I can start looking for these? I've got a dead, > antique servo I'd like to revive. |
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