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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 08-04-2023, 12:54 PM
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Default Potentiometers are terrible! Don't forget to check/replace/clean yours..

Heyho,

After maybe 100 hours, the steering potentiometer on my FlySky G7p is already worn. It jitters to the right up to 10%, enough to send me off the track. This can be perfectly seen using it as a PC USB controller and just looking at the raw value of the steering axis.

Maybe I am spoiled working in the high end simracing peripheral industry, but pots are a thing we said goodbye to over a dozen years ago. They are always going to fail. Hall sensors aren't expensive, I have no clue why FlySky doesn't use them.

For those unaware, clean and replace your pots every now and then, maybe it is messing with your driving!
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Old 08-05-2023, 11:08 AM
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Or maybe you are just using Chinese junk instead of a quality radio?
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Old 08-05-2023, 01:34 PM
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Originally Posted by sosidge
Or maybe you are just using Chinese junk instead of a quality radio?
What quality radio is not made in China?
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Old 08-05-2023, 03:19 PM
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I wouldn't consider "FlySky" to be quality. There are allot better radios out there. (jmo) It's always been my feelings that if you buy cheap, that's what you get.
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Old 08-05-2023, 04:20 PM
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Waiting for the angry FlySky fanboy brigade to find this thread...
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Old 08-06-2023, 03:28 AM
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Niels007007, what is the potentiometer part number?
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Old 08-06-2023, 04:58 AM
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Hi Rustyus,

It says HJ on the back, and on the PCB (I took it apart) it says B5K.90 which seems to be the 5kilo ohm that it is and it has 90 degrees of electric rotation.

Are pots the norm in RC controllers? Do certain models use a form of contactless sensing?
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Old 08-06-2023, 05:20 AM
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Originally Posted by Niels007007
Hi Rustyus,

It says HJ on the back, and on the PCB (I took it apart) it says B5K.90 which seems to be the 5kilo ohm that it is and it has 90 degrees of electric rotation.

Are pots the norm in RC controllers? Do certain models use a form of contactless sensing?
Pots are the norm. The Sanwa M17 is the current gold standard of surface radio, and it uses potentiometers. I don't know of any that use anything else, but I haven't been keeping an eye out for it.
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Old 08-06-2023, 06:18 AM
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Originally Posted by Niels007007
Are pots the norm in RC controllers? Do certain models use a form of contactless sensing?
Perhaps KO,

new angle sensor.
Prevents deterioration of durability and operational feeling due
to wear, which can be said to be the problem of contact sensors.




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Old 08-06-2023, 06:24 AM
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Originally Posted by oldfool
Perhaps KO,

new angle sensor.
Prevents deterioration of durability and operational feeling due
to wear, which can be said to be the problem of contact sensors.

I think KO still use a pot, it's just a better quality one.
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Old 08-06-2023, 06:57 AM
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Originally Posted by oldfool
Perhaps KO,

new angle sensor.
Prevents deterioration of durability and operational feeling due
to wear, which can be said to be the problem of contact sensors.

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.
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Old 08-06-2023, 08:30 AM
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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.
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Old 08-06-2023, 08:37 AM
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My faith is “20%down” in the accuracy of a graphic that spells neutral “NEWTRAL”🙄
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Old 08-06-2023, 03:05 PM
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Originally Posted by gigaplex
I think KO still use a pot, it's just a better quality one.
Originally Posted by rustyus
Sanwa Replacement Steering Potentiometer M17, M12, MT-44.
Is there such a thing as a non contact pot?
Would that be a digipot or a hall effect sensor?

the problem of contact sensors


Originally Posted by simple
“NEWTRAL”🙄
Japanese - English translation is often amusing.
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Old 08-06-2023, 03:52 PM
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I replaced the pot in someone's M17. Good quality ones are not cheap:

The RDC90 is near enough 10x the price of the RDC50, but you get 10x the cycle count :-)
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