Re: Battery Powered Lawn Mowers - All Junk - Why?

On Tue, 26 Apr 2005 18:36:38 +0200, Rene Tschaggelar <none@xxxxxxxx>
wrote:

>Holophote wrote:
>
>> Electronics has been my hobby and
>> profession for most of my life.
>> I use a lot of high quality battery
>> powered shop and garden tools.
>>
>> When I was kid I learned how repair
>> and rebuild small gas engines, so
>> I was very skeptical when weak and
>> poorly made battery powered tools
>> became available several years ago.
>>
>> These days, I save myself countless
>> hours of maintenance by using every
>> type of battery powered equipment
>> I can afford.
>>
>> I would love to buy or build a high
>> quality battery powered lawn mower.
>> Most of the manufacturers that briefly
>> entered this market got out real quick!
>> There were a few 36 volt models that
>> had all sorts of problems. The only
>> one left is Black & Decker. They've
>> got a 24 volt unit that runs off a heavy
>> lead-acid battery. The power to weight
>> ratio is terrible. Also, they used
>> a lot of flimsy plastic parts which
>> forced a recall a couple of years ago.
>
>Another aspect beside battery capacity is the
>safety aspect. While a petrol powered engine
>stops when encountering a root or a stone or such,
>an electric engine starts drawing much more power
>when braked. Thus a normal motor is inherently safer.
>

Controls, or even a circuit breaker, would take care of that. An
electric motor has, potentially, less moment of inertia, which would
make it safer in lots of situations.

John


.

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