MP40 QD Pulse Mode = LOUD Bearings

[Settings]

I have two MP40's QD's. Is it bad to run them in pulse mode at 45% power and a 7 second pulse?

I wonder, because mine have developed a grinding noise in the bearings.

Anyone else?

[xmas_one]

Oh man, I was waiting for this...

[Settings]

Oh man, I was waiting for this...

You think I wrecked them?

[xmas_one]

You think I wrecked them?

No, I was waiting for the bearing noise to rear its ugly head in the new "quiet" versions.

[rynoe]

How long have you been running them? At first mine had a significant grinding noise in pulse mode and I thought I had just made a $400 mistake. After two weeks I can't even here it running now.

[Settings]

I think mine have been running a few months now.

[Settings]

I just hope that after a few months of running in pulse mode has not rendered these al loud as my old MP40's.

ETM, any ideas? It may be a dumb question, but was there any long term testing on these in pulse mode?

[Alex Y EcoTech]

Settings,

That is an unusual issue. I would recommend removing the wetside and allowing the dryside to run without the wetside attached. If you no longer hear the noise, cleaning the wetside would be a good option. If you do continue to hear the same grinding, please contact us directly.

[Mpup]

Do you have instructions on QD cleaning?