The hot weather arrived so it's time to break out our several fans from storage. They needed a good clean, which involved removing the front cage, taking off the blade and giving it a wash (removing dust from the blade makes huge difference to their efficiency btw ;)) Every one had a reverse threaded nut to clamp the blade to the spindle.
I think my angle-grinder also has such a fitting, maybe the chuck on the electric drill and perhaps the head on my petrol strimmer (weedwhacker); I'm not certain.
Sometimes the rotating bit needs to spin a certain way (the circular saw, for example), but not the fans.
The question - why build them like this rather than have a normal nut and have the motor spin the other way? I'll bet that plenty of people have damaged such devices by hauling away on those nuts in the conventional way. Some characteristic of electric motors?
[/idle curiosity, as he sits in the cooling breeze of a fan that's strong enough to destroy Trump's comb-over]
I think my angle-grinder also has such a fitting, maybe the chuck on the electric drill and perhaps the head on my petrol strimmer (weedwhacker); I'm not certain.
Sometimes the rotating bit needs to spin a certain way (the circular saw, for example), but not the fans.
The question - why build them like this rather than have a normal nut and have the motor spin the other way? I'll bet that plenty of people have damaged such devices by hauling away on those nuts in the conventional way. Some characteristic of electric motors?
[/idle curiosity, as he sits in the cooling breeze of a fan that's strong enough to destroy Trump's comb-over]
via International Skeptics Forum http://bit.ly/2XEfZ9I
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