Potentiometer Elements

Mar 04, 2009 27 Replies

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 "

formatting link
" 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.


http://www.wescottdesign.com

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 ;-)

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 (:-).

http://www.wescottdesign.com

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

Why not cannibalize another servo? Or even ebay.

Cheers

three

a

Allied Electronics has the Honeywell/Clarostat pots as well as others.

2332 total according to a search on their site--
formatting link
You can also call them for help at 1-866-433-5722
Anyolmouse

The pot is pretty much _the_ wear item, there's not much point to that.

http://www.wescottdesign.com

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

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

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

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

formatting link

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

http://new.vishay.com/docs/57042/157.pdf JF

formatting link
?N=1001531+255981&_requestid=199688

JF

Just yesterday, on the news, taxing basically all forms of present energy forms.

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

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

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 ;-)

...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

It's in his budget proposal, which budgets ~$700 billion in cap-n-trade revenues (taxes).

Cheers, James Arthur

Not to deviate from all the political BS, but... If you need a _real_ servo pot - try

formatting link
They've sold us some special pots so we could resurrect some old equipment. Hope that helps! -f

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

I am old enough to have worked for an analog computer company that made their own pots and slidewires with nichrome and phenolic.

But you youngsters want to take the easy way out..

formatting link

Kevin Gallimore

"Jim Thompson" wrote in message news: snipped-for-privacy@4ax.com...

I voted for Nixon and Reagan. Does that make me a Leftist Weenie?

Ed Cregger

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required