Johnny B Good wrote:
I've been googling for ways to reduce the noise pollution that this
rather neat Honda EU1000i 'knock off' generates.
[1] I saw a couple of videos where various silencer upgrades had resulted
in only a couple of dB of noise reduction, often compromising the engine
performance.
The most impressive results came from simple sound deflectors, in one
case a matter of 10dB being achieved just by laying sheets of plywood/
plasterboard round all four sides, resting at an angle of 45 degrees
against the top of an open frame generator, leaving large gaps to allow
the generator to breathe and stay cool.
This is was what happens when you move people into a newly constructed
building to start getting money back so fast the the mains havent been
connected, the people whose money you have taken and others object to the
racket and you get someone €śintelligent€ť to box the generator in.
http://www.bbc.co.uk/news/uk-england-hampshire-37478840
GH