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Old 03-15-2006
Mkfcdl Mkfcdl is offline
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Generator noise/vibration

I have a question about reducing generator noise and vibration.

I've got a Panda 4kW generator mounted aft of the aft cabin in a large cockpit lazarette; it's mounted on a shallow platform which is in turn mounted against the hull. The mount is fiberglassed and made of 3/4 inch marine plywood. Panda recommended that the installer mount it on two beams or joists rather than on a flat surface. If it were to be mounted on a flat piece of plywood, Panda then recommended cutting large holes in the plywood surface to keep resonance with the hull to a minimum. Unfortunately, my installer ignored both requests and basically created a hollow box against the hull and mounted the generator on the top of the shallow box with no holes.

So, my question at this point is this: if I cut holes in the top surface and in the low side panels, will my generator noise be significantly reduced? Or should I fill the hollow with some soundproofing material?

The generator noise is mostly one of vibration against the hull (I know, big shock there). I'm not planning on building an enclosure for the generator since open air noise is acceptable and the Panda has a decent lead-lined cover anyway. I mostly want to lower the vibration noise which can be heard quiet readily in the main cabin (40 foot boat).

Any thoughts would be greatly appreciated,
Mark

Last edited by Mkfcdl; 03-15-2006 at 01:47 PM.
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