I just picked up a router speed controller similar to this:
I don't claim to be the sharpest pencil in the box but when I
plug it in the FULL, OFF, switches work fine. The VARIABLE switch does
indeed lower the speed of the router but the dial itself does nothing.
I presume the dial should either slow or speed up the speed, but no
matter what I turn it to the speed stays the same. I have two routers.
One already had a speed control on it; the other does not and this new
speed controller works on neither of them. Both routers are sears
models, one of which is a commericial type single speed, the other has a
variable speed built in. (Please be gentle...they were given to me so
the price was right regardless of brand).
Figuring the controller was bad I exchanged it, but still have the same
problem. So, I presume it's something about the routers themselves. As
always any help is appreciated.
I have a speed controller just like the one you linked to, and mine works
fine. I've only used it with a Porter-Cable 690 router, but when I have the
switch in the variable position and move the dial, it raises/lowers the RPM
as you'd expect. I don't see how the actual identity of the router would
matter, but it does seem peculiar that you got two controllers and they both
act the same way. Sorry I can't be of more help.
It's well known that they won't work with the router that already has built
in speed control. But the other router, does it happen to have soft start?
The controller probably won't work with that either.
An incandescent light may be safer.
I have a similiar unit, works fine on my Bosch.
I did a quick test and plugged a lamp into the controller.
When set to full, the lamp was lit as usual.
However, when set to VAR even on the highest setting, it wasn't that bright.
On other note, the lamp (100w) buzzed when on the VAR setting.
I tried checking the voltage with my voltmeter, but, it's in need of a
You can try that your self also.
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