Re: rec tech mower

On 4/16/2025 5:28 AM, John B. wrote:

>
Why all this worry about electric mowers? Get a liquid fuel mower and
build a proper exhaust system so it's quit :-)

>
Long ago in some engineering forum one guy described modifying his
mower's exhaust system, mostly by adapting a far larger muffler. But
the engine exhaust is only part of the noise from a typical
mower. Much of the noise is generated aerodynamically by the 21" or
22" blade whirling around in a sort of echo chamber beneath the
engine.
>
Many electric mowers use much smaller blades, eliminating most of that
noise. Mammotion's mowers https://us.mammotion.com/  use discs that
carry little razor blades on their periphery.