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From: Radey Shouman <shouman@comcast.net>
Newsgroups: rec.bicycles.tech
Subject: Re: rec tech mower
Date: Thu, 17 Apr 2025 20:37:35 -0400
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Frank Krygowski <frkrygow@sbcglobal.net> writes:

> 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.

Scythes are becoming more popular by the day.  Very quiet.

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