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Logitech G25 optical encoder problem + motor
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Logitech G25 optical encoder problem + motor
Hi there,

My encoder wheel is fully broken and warped, I had previously glued it and worked fine. Last week I opened the wheel again and was broken again, I re-glued it, but now it doesn't pick up anything...

The optical sensor also got misaligned and might went bad.

Does anyone know if its too hard to align the optical sensor and how can I check if its working with like a multimeter?

I don't want to spend a lot on a new wheel encoder to then find out the sensor is bad.

Also the other motor without the encoder is a bit harder to turn, I fully deep it in WD40 and used a 9V battery to turn it, the oil got full of black stuff very fast probably from the brushes wearing material inside, then I passed alcohol and used a de-greaser spray on the motor and oiled the bearings, but it still is a bit harder to turn.

Does anyone ever opened a G25/G27 motor, if yes, is it too hard?

Thank You
Is it the 60-slot encoder wheel? If so, they are quite affordable, here's a stainless steel one for 19€ as an example:

It's possible that the encoder wheel is so broken that the sensor can't decode any input from it, I had to recently help a friend out with his DF GT with similar issues. He ended up buying a G29 though. But problem was similar, after gluing the wheel back together the steering wheel gave no inputs, which is what i guess has happened to you too. It's also possible that the encoder board or its connection to the main circuit board above them are faulty if they have possibly become loose, from what I researched that can be possible too.

I would assume you could read the resistance out of the optical sensor, I am not really that into electronics so I can't give much advice on the subject more than that. there are also 2 versions of G27 and I don't know of the differences what they had apart from different encoder wheel/sensor system. I would consider opening up the motors as a last solution, too.
Quote from nikopdr :Is it the 60-slot encoder wheel? If so, they are quite affordable, here's a stainless steel one for 19€ as an example:

Yes I know that part and I already contacted a seller and that part is quite expensive...

19€ for like 10 cents worth of metal...

The problem is the 2 optic sensors got moved from their place a bit and I also don't know if they are working anymore and I need is a way to test them but don't know how to test the 2 sensors (can't test with my encoder wheel because it got all broken and warped all over the place)...

If they are good I would buy that decoder 60 hole wheel. G29 have been in a promotion for 200€ a few time ago, that 10 cent worth of metal part is like almost 1/10th of the price of the whole G29 in last promotion lool.

Sadly now the G29 is around 300€ locally so even if I can't fix my G25 I can't buy a new racing wheel for now as I don't have much money to spend on something that breaks after like 1000 hours or so Frown.

The motors are both working, just the other without the encoder is a bit harder to turn, I fully cleaned it, but didnt fix the problem, I might need to fully open it or change the bearings, but they seem hard to open and I dont see anything while searching on how to open G25/G27 motors.
I tested the IR emitter a few days ago with my phone camera and its working, the receiver however I used some random pins and it measured around 4.2V if I'm remembering well, but I didnt have anyone help to block all the light and do it in complete darkness to see if the voltage would change Frown...

Anyway I ordered a new wheel encoder for 20$, it will probably take more than a month to arrive, then I will update here If I made it work...

And if it start picking up wheel movement, then I will fully disassemble the other motor, fully clean all the internals, use a very thin sandpaper like 2000 and make the brush contacts shinning like new, however I suspect the problem is the bearings and I don't know what size they are to order some new ones...

And in case the brushes are worn, does anyone know what kind of brushes suit best, can I buy like some cheap ones from from RC motors like 540 size or bigger? And whats the best ones, carbon?
Sadly no luck Frown

I bought a all metal encoder like the following:

I received it yesterday, tried fixing the wheel today with 0 luck.

I think the light sensors are simply misaligned, but I lost hours moving them to every kind of place and never picked up any wheel movement, even broke 1 leg of the IR emitter, soldered it, its emitting again, but really no way to make it work.

I also tried the encoder wheel on every kind of position, more to the middle, more to the emitter side, more to the receiver side and even at both edges, I also tried painting the encoder metal wheel with a black permanent ink marker and still nothing Frown...

Now I'm gonna have to wait for a promotion on a new wheel and spend a full year of savings Frown.

Which should I buy, Logitech G29 or Thrustmaster T300?

Both are made to die fast as far as I know G29 still has problems with the hall sensor (just like G25 G27 with the encoder wheels), the motors wear out and get harder and harder to move very fast as they build up crap from the brushes inside, they are basically the same crap as the ones on my G25.

Thrustmaster has a way better motor since brushless which will probably last longer than the rest that will break up fast though the plstic on the motor usually also breaks leaving the good motor unusable, the haul sensor starts to get loose as Thrustmaster don't even know there are better glues on the market...

All I see is that both are still expensive and break very fast and I also still don't know why they keep using pots on the god damn pedals when there is so much more cheap and better technology that they could have used that would last 4 ever, yeah they really want is that they break so we have to keep buying expensive shitty stuff...
i managed to revive my g27 which at first started to wobble which was an easy fix and a pin falling out and losing my ffb.

I must say my g27 has took some punishment to get to where it was which has persuaded me to go for another as the latter ones released do not look as strong
My G25 was probably used like 1000 hours or less since most of the time it was just picking up dust...

In just a few hours the H-shifter already started to skip or jump gears (they use very cheap pots).

The wheel with almost no use at all I decided to disassemble it and clean it and the encoder wheel was already broken with almost no use and no punishment, I glued it, lubbed the gears and closed it...

I never really used it with 100% force feedback, never played rally games with it and never did much drifting with it, it was mostly soft GT games and finished only 1 racing game with it Gran Turismo 6 and played a bit of Project Cars, Assetto Corsa and a few older good simulators but not even much...

Then the wheel started to get harder to move even turned off (but was fully working even though the accelerator pot was already starting to spike slightly and the motors had just a bit less strength) so I disassembled it again and one motor was already harder to move (thats the fault for the wheel to be harder to move even when OFF), I fully cleaned it and lubbed only the ball bearings on the motor that has no encoder wheel, that's the one that was a bit bad, However cleaning it and lubbing the ball bearings sadly didnt really fix the motor it just improved it very slightly...

Anyway the encoder wheel was all broken again, after re-gluing it, it never worked anymore, I even ordered a new all metal one and never managed to make the wheel to work ever again, it doesn't detect the wheel movement, though the motors work, pedals, H-shifter and all buttons.

The IR sensors got misaligned a bit, but I really tried for more than a hour everything and never could make it capture any motion Frown.

ps: Still haven't bought a new wheel, I'm waiting for a promotion and still don't know if I will go with Logitech G29 or Thrustmaster T300, both are made to die, have to chose what poison should I buy, both companies could have used better and maybe even cheaper and more durable technologies, but it seems they like to rely on stuff that wear out like pots or using bad glue and bad plastic and they just fail like nutsDead banana
The g27 and g29's are very similar apart from the buttons. My g27 had taken an awful lot of use and abuse

Logitech G25 optical encoder problem + motor
(8 posts, started )