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Potentiometers are terrible! Don't forget to check/replace/clean yours..

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Potentiometers are terrible! Don't forget to check/replace/clean yours..

Old 08-06-2023, 06:26 PM
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All I know is I have never, ever had a pot fail in any radio I have ever owned. But except for one Futaba way back in the day, I have only used Airtronics/Sanwa. I'm no Flysky hater, I'm all for lowering the barrier to entry but at the prices those things go for, you have to know the quality of components will not be there.
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Old 08-06-2023, 07:24 PM
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Originally Posted by Roelof
I believe for the 10PX there is a version with electronic potmeters and I know there are upgrades. Basically if you are handy you can make every potmeter fit.
I can't find any reference to multiple versions of a 10PX other than the bundling of the receiver that comes with it.
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Old 08-07-2023, 02:26 AM
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Originally Posted by gigaplex
I can't find any reference to multiple versions of a 10PX other than the bundling of the receiver that comes with it.
https://www.act-europe.eu/katalog/ar...iginal-von-act


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Old 08-07-2023, 04:30 AM
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Is that an official product? Don't see anything from Futaba, and it doesn't appear to have a separate name or part number to distinguish it. Looks more like a 3rd party is converting them.
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Old 08-07-2023, 05:16 AM
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It seems Ripmax Germany (is official Futaba) and ACT are selling these.

ACT claims an own development using it since 2012: FUTABA Potless Technik | ACT Europe (act-europe.eu)
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Old 08-07-2023, 05:24 AM
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Originally Posted by gigaplex
Is that an official product? Don't see anything from Futaba, and it doesn't appear to have a separate name or part number to distinguish it. Looks more like a 3rd party is converting them.
Translated from

POTLESS V3 - Maximum precision & reliability
For some time, ACT Europe has been offering the superior POTLESS V3 technology for FUTABA remote control transmitters. With this innovative technology, the control movements are scanned without contact and no longer by conventional potentiometers, which are subject to a certain amount of wear.
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Old 08-08-2023, 04:56 AM
  #22  
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Originally Posted by gigaplex
I think KO still use a pot, it's just a better quality one.
You would be correct sir.

On Monday, August 7, 2023 at 08:26:47 PM PDT,
<[email protected]> wrote:

Hi,
It is a Potentiometer which has high durability, but not hall sensor.

Best Regards

For KO PROPO
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Old 08-08-2023, 06:50 PM
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Originally Posted by rustyus
Over many decades, I replaced a lot of volume/tone potentiometers in my guitars, and amps. The last radio I took apart had older "pots" that I was used to seeing...



Thanks to this thread, I went looking for different potentiometers used RC radios. I found what oldfool posted above... Sanwa Replacement Steering Potentiometer M17, M12, MT-44

I never even knew such a thing existed. Interesting.
Hi Rustyus
Could you give me the part number or brand of the potentiometer so I can look it up?
I'm having the same problem with Sanwa MT44
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Old 08-08-2023, 07:29 PM
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Sanwa part number: 753L00731A
OEM part number: Alps RDC9010006

It is not a low cost part. Suggest buying the Sanwa-labelled one or only buying from an authorised distributor. I've done a quick search and would stay away from the obviously much cheaper ones, since it's an important part of your radio. Mouser appear to have a few, RS is showing one. Expect USD20+
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Old 08-08-2023, 08:27 PM
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Originally Posted by PDR
Sanwa part number: 753L00731A
OEM part number: Alps RDC9010006

It is not a low cost part. Suggest buying the Sanwa-labelled one or only buying from an authorised distributor. I've done a quick search and would stay away from the obviously much cheaper ones, since it's an important part of your radio. Mouser appear to have a few, RS is showing one. Expect USD20+
Dang! These Sanwa parts are expensive
What about the OEM part you mention? Is it ok?
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Old 08-08-2023, 08:35 PM
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Originally Posted by mckampret
Dang! These Sanwa parts are expensive
What about the OEM part you mention? Is it ok?
As far as I know, they are exactly the same. Alps are the manufacturer and people like Mouser are official distributors. But, it is still a premium component.
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Old 08-08-2023, 09:19 PM
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Originally Posted by mckampret
Dang! These Sanwa parts are expensive
What about the OEM part you mention? Is it ok?
Just get the ALPS, that is what you are getting with a sanwa part number. Trust me, I bought one not too long ago. It has ALPS stamped on it. I took a look at the datasheet of the part number that PDR and it shows that as a 3.3kΩ resistor. I measured mine and it measured at 2.5kΩ, but it also has a 30% tolerance, so it is barely in range. I guess that is the trade off for a 10,000,000 cycle lifetime...
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Old 08-08-2023, 09:25 PM
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When I did a replacement for someone's M17, the one I pulled out (very bad jitter) measured at 3.3k. Popped in the new one and it was fine. It's not a super difficult job, but your desoldering skills need to be above beginner level.


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Old 08-09-2023, 09:01 PM
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Originally Posted by trilerian
Just get the ALPS, that is what you are getting with a sanwa part number. Trust me, I bought one not too long ago. It has ALPS stamped on it. I took a look at the datasheet of the part number that PDR and it shows that as a 3.3kΩ resistor. I measured mine and it measured at 2.5kΩ, but it also has a 30% tolerance, so it is barely in range. I guess that is the trade off for a 10,000,000 cycle lifetime...
Is this the one?
https://www.aliexpress.com/item/1005005391644322.html
Found a cheap price from aliexpress
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Old 08-09-2023, 09:18 PM
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Originally Posted by mckampret
Is this the one?
https://www.aliexpress.com/item/1005005391644322.html
Found a cheap price from aliexpress
Looks like it. Make sure you get the one ending in 6. The one ending in 7 is a 10k.
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