Alex, any news? did you solve the problem?
On my new SC2 Pro the same problem, only a little quieter
Unlike the knocking I’m getting a graining sound from my Pro unit (see video). I can hear it when the motor is turned ON and OFF and it’s also slightly noticeable (by feel) in the steering wheel. I have to mention that when I spin it multiple times it seems to disappear but comes back again when the motor is being used.
Could you sort of explain a bit what is going on and do I have to worry about this Pro unit? I’ve only been using it for two weeks now.
(servo motor is turned OFF in the video btw).
the video wont play…
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That doesn’t sound too good.
For comparison:
My servo is silent when not powered on.
It’s also silent when powered on and in high torque mode.
I’m not able to turn the wheel as freely as in your video when powered on and in low torque mode because of the additional damping. It is still silent though.
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I’ve seen another video on youtube with a similar issue.
I hope this gets resolved swiftly as it sounds like a fault. Mine also is totally silent and smooth to turn. No noise what so ever.
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Hmm so my concerns are definitely correct… I hope the guys from Granity can comment on this. I bought the unit from Simracingbay so I wonder how I can return it in case of a failure. Suppose they have a sort of RMA procedure?
PS. In the video the motor is powered off. When it’s powered on it’s also heavy to spin, like in your case (which is normal I think).
Yes good point. I saw this particular video later, after my initial post. That thread doesn’t really give an answer or solution to the problem. I also removed the SQR to make sure the front plate of the motor wasn’t rubbing the SQR hub
Hi Johan, That does not sound good . Suggest you contact Simracingbay as they are the people to start the RMA process. Hope this gets fixed quickly for you
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I suggest you guys simply remove the front dove-tail on the shaft bush, then tighten the bolts on the clamp adapter in a cross-wise fashion…I suspect the culprit here is the hub-adapter rubbing against the servo-face, tightening the bolts will move it a bit further away from the servo-face, as it uses a conical clamping method.
Cheers,
Beano
Thanks, I will contact them. But first I wanted to be sure there is really an issue with the unit.
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As I mentioned, I already tried that, makes no difference. I even rotated the motor shaft with the hub-adapter and clamping device removed but no luck, still a graining sound coming from the motor. I could make a video of that if you like?
Still no luck. Or is such amount of graining normal?
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I’ve just tried mine with the rim off and it super smooth and no noise.
Hi Johan,
Ha, ok, that is not normal. Contact your reseller to get you sorted 
Cheers,
Beano
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Thanks Beano. I just informed simracingbay and I guess they will start the RMA procedure.
Just a short update to let you guys know how this was solved.
I contacted Tomo at Simracingbay and he immediately (the very same day actually) send me a new unit. Fortunately he had some pro units in stock. Great service and effort from his side.
The new unit is free from any strange noises or graining, so problem fixed for me. Thanks for all the replies and advice.
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Well done, Tomo is one of the best in the business. Glad you’re sorted, enjoy your new wheel, Johan.
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Good to hear Johan, and another glowing report about Tomo! I must buy something from him 
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Yes Tomo is the best!
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