Thread: Carbatec 2hp Dust Extractor whine. How to fix? Not muffle.

The following is usually is more effective for rumble rather than whine but given its and easy thing to try it should be worth a go.
Attach some lead weights to the outside of any largish flat surface. Ideally you'd bolt or glue the weights on but you will get an idea if its going to work by clamping the weight to the surface.
Even just clamping across a set of flat surfaces might give you an indication.

Another treatment is to bolt small eg 3 x 20mm plastic strips across the flow on the exit walls of the impeller. Be aware that this can affect the air flow through the impeller.

Other way is to interposed a piece of 300mm smooth pipe between the flex and the impeller inlet.

Thanks heaps for the quick reply.
can't seem to find a reference to the "flex"

flex is the hose/pipe coming into your dusty.....I think

Had another go.

It's the motor that whines.
The more resistance the more noise.
Whether the input port or the output port.
Walk down the drive and it's worse than standing right next to it.

Bummer.
I was hoping it was the vibration agains the barrel center hole.