Noise from self-propel system

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Just bought 2102SP and have used it once. The running blade sounds like a fan, as expected. However the self-propulsion system when engaged makes a somewhat raspy, high-pitched whining sound, kind of unpleasant and not what I was expecting. Others experience this? Is it normal or indication of a problem?
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coast

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Posted 3 years ago

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Fred Tarnay

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Difficult to help here without hearing the noise. Electric motors tend to have a high pitched whining sound. Raspy? Dunno. If it's louder than the cutting blade motor, there's probably a problem.
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Blue Angel, Champion

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Check out a few YouTube reviews and compare the sound. I remember thinking the SP drive was a little loud, but I haven't heard it in person.
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Kid Rock

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Well, descriptions are often subjective. But I think what I hear on my self-propelled mower could be described as you describe yours.


I've seen other people, more or less have a similar thought as to the sound of the motor. So I don't think there is much to worry about. Continue to check out the forums and see what other people think.


Remember the Main blade motor is just spinning a blade kind of like a fan. But the motor that's used to propel the motor forward has some gearing involved, so that might B part of the reason it sounds different. I have a feeling that the propelling motor is also not brushless so there could be the added sounds from brushes. Also, think about how an old drill used to sound? They are a little bit loud and raspy... Kind of what you're talking about. But that didn't cause any reliability issues with them either.


I didn't like it at first, but it doesn't bother me anymore. Of course when you're actually mowing you probably won't hear it very much.
(Edited)
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DJDDay

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I've got the SP mower, as well.  Blade motor is fan-quiet; very much agree.  The SP motor does emit a rather high pitched "whirrrrrrr" when in use.  The first time I used it, I could hear it quite well and it bothered me a bit - but that's just because I was so used to the fan-quiet blade in the old 20" and the 21" when not using the SP mode.  But.... I honestly don't hear it anymore, not enough to bother me anyway.  The thing trucks along like a marathon runner, and the trigger for engaging it works very comfortably.  

I'm pretty happy with my 21" SP mower, raspy whirrrrrring wheels and all!