Blade brakes acting flaky...

So...off working in the shop today, making a small wooden box to put my dad's present in so I can mail it out tomorrow or Saturday, and I noticed something funny, that concerns me a little bit. The electric blade brake on my CMS (Bosch 3912), and the electric brake on my DC blower (Griz 1029) were both acting flaky today. After killing power, both would spin freely for 1/2 to 2 secs. (or more on the DC) before kicking in.
I just find this kinda strange, as neither has exhibited this behavior before (though I haven't been doing much in the past couple months). If it was just the DC, I wouldn't care, but the CMS concerns me. I have no idea how this type of device works, so I'm wondering, is it something systemic, or is it just coincidence that they're both acting up?
Any help is greatly appreciated...
--Greg
-------------------------------------------------------------- Greg Mikol
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I'd be interested in learning about this, as well. I had not used my Dewalt circular saw for months. Recently I broke it out of mothballs and noticed the same phenomenon. The blade brake doesn't work like I remember it. It keeps spinning then kicks in about 2-3 seconds after killing power. It used to be almost instantaneous.
Bob

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On the CMS, make sure the blade is tight on the arbor. Saws with brakes have a tendency to loosen the blade under braking, just as they tighten it under startup.
--
Ross
www.myoldtools.com
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My Old Tools said:

Good point!
Greg G.
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