G25 wont calibrate , Already replaced encoder wheel

[supersteve]

I'm running out of ideas on what is wrong with my G25. I was playing TDU2 when I noticed my wheel had become off center. I unplugged and it kept failing to calibrate. I have put a new encoder disc in as I heard they were the common fault but it's not made a difference, the internals look fine to me I can't see any signs of anything blown. My problem looks exactly the same as in

I really need to fix my wheel I wont have enough money spare to buy another for quite a long time

 

[sesselpupser]

In that video it looks like it's only turning 1.5 turns from full right lock to full left lock but the G25 is supposed to have 900 degrees/2.5 turns, right? Have you checked the plastic rack that sits under the steering shaft to make sure it's properly centered? In my G27 there's no other part that can limit the rotation so I guess it's that...? Or am I just being extremely dense? I don't even know any more.

Edit: In this video you can see that when the G27 hits the full right lock, it turns 2.5 times before it hits the left lock:



As I said before, the plastic rack is the only part that limits the rotation - remove the rack and the wheel will keep turning clockwise until you grab it to stop the rotation, then it'll turn anti-clockwise forever until you grab it again. So basically your G25's wheel is hitting something to stop it from turning before it can do the full 900 degrees/2.5 turns. I don't think the G25 is significantly different from the G27 beyond the helical gears and more buttons on the wheel, so I imagine all that mechanism is the same. This repair guide might help.

 

[supersteve]

I've already seen that guide, I'm not knowledgeable enough to do soldering or electrical work on the wheel. The rack is centred I can rotate the wheel lock to lock by hand. I've ran the wheel with the encoder off and it gives the classic encoder broken reaction.

Do you know of anywhere that will repair the wheel or has spare parts in the UK

 

[VBR]

@supersteve - Have you tired this simple fix? It worked for me when I had calibration issues on my G25.


👍

 

[sesselpupser]

So you can turn it 2.5 turns by hand or only 1.5? In that video you posted it sounds like the wheel is hitting the stops but it's only doing 1.5 turns, that's a complete mystery to me. The DFP had a sliding block to change between 240 and 900 degrees but I'm pretty sure the G25 doesn't, it's definitely a 900 degree wheel, right, not 540?

And as far as I know, there's nowhere that'll fix a G25 in the UK. Maybe someone from a sim racing forum could do it but it seems like all the people who really know what they're doing are in the States and Europe. I'd offer to take a look but if it's anything more than a really obvious, visible problem I won't know how to fix it!

 

[supersteve]

@VBR I've already tried that when I had the disc off replacing it with a Brass one

@neema_t I can turn it the full 900 by hand, The video posted isn't of my wheel I just saw it and it had the same problem as mine. I'm not sure which other forum to post to to be honest. I've not really been into heavy sim racing for a while but have been using the wheel on Euro Truck Sim 2. Only thing I can think of now is a motor has blown a mofset but I'm not good enough with electrics to attempt a fix

 

[sesselpupser]

@neema_t I can turn it the full 900 by hand, The video posted isn't of my wheel I just saw it and it had the same problem as mine. I'm not sure which other forum to post to to be honest. I've not really been into heavy sim racing for a while but have been using the wheel on Euro Truck Sim 2. Only thing I can think of now is a motor has blown a mofset but I'm not good enough with electrics to attempt a fix

I don't think it's a blown MOSFET, if it was then the motor wouldn't turn in at least one direction, but if your wheel is turning as the one in the video is then your motors and FETs are probably ok. Your power supply might be out of spec, though, I suppose if the voltage or maximum current were to drop (do you know how old the wheel is?) then you'd expect there to be less torque. Could you post a video of your own wheel? Or, if not, I've got a load of questions:

- With the power off, is it easy to turn the wheel all the way left and then all the way right? Is there any kind of resistance at any point?
- When you power it on and it attempts to calibrate, do you hear an audible 'clunk' when the wheel stops turning right and then again when turning left? In other words, does it sound like the wheel is hitting the physical stops or does it sound different?
- Does it seem to be turning slower than usual, or slower than in other videos of G25s that are working normally?
- You mentioned that you can turn it the full 2.5 turns by hand, do you think you could 'help' it calibrate by turning the wheel past the point where it stops? What happens if you do that?
- You could also try stopping the wheel by hand while it's calibrating, does it feel weaker than usual if you do that?

By the way, was your old encoder wheel actually damaged when you removed it or did you do it as a precaution?

 

[VBR]

@VBR I've already tried that when I had the disc off replacing it with a Brass one.

Sorry to hear that.

 

[supersteve]

I will get a video up tomorrow of the wheel, Been a little busy today

 

[supersteve]

Sorry been busy with work all month

Checked the G25 today, It will try to calibrate 3 times and then give up.

Doesn't feel like there is any resistance when it's plugged in when I turn it by hand

 

[VBR]

@supersteve - Invest some money in a second hand G25, then sell all the parts separately to get most of your money back, & just keep the wheel base. Then sell your faulty wheel base to get even more money back. Problem solved.


👍

 

[supersteve]

Checked it today whilst I had some free time, By pulling wires out I know that both motors are working although the right one is a little slower which shouldn't make a difference. With the encoder unplugged it seems to know it. So I'm probably looking at either a faulty replacement encoder wheel or the encoder assembly isn't working correctly

@VBR Is there anybody selling parts here that you know of ?

 

[VBR]

@VBR Is there anybody selling parts here that you know of ?

No, but you will find some on ebay from time to time. Better just to buy a whole set, take what you need, then sell off the pedals, shifter, wheel rim, paddle shifters, separately to get the most amount of money back that you can. There's quite a few for sale that have been "hardly used" according to the description. If you find an ebayer with very good feedback you can confidently give them the benefit of the doubt.

 

[Kliki]

Hello, did you manage to fix it?