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post #1 of 20 (permalink) Old 03-27-2012, 03:57 PM Thread Starter
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Default Router Speed Control

Hello all...I have a craftsman router that is not var speed. Only has 0-25000. I want to use the speed controller I found over at harbor freight. Anyone have any luck with those?

Looking at making my first raised panel doors. The cutter only needs to run at 12000. Any help for a newbie will be most appreciated
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post #2 of 20 (permalink) Old 03-28-2012, 02:24 AM Thread Starter
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???

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post #3 of 20 (permalink) Old 03-28-2012, 04:48 AM
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Mike,

I have not worked with that specific speed controller but it appears the HF speed controller is similar to one I own from MLCS. Speed controllers are designed specifically for universal brush-type motors as used in routers. They work well with basic (non-electronic controlled) routers.

Routers with electronic circuitry for slow-start, variable speed or electronic braking may have issues with them however. Some people who are handy with electronics and electrical devices have gone in and bypassed the electronics in the router to use the speed controls but that is obviously done at your own risk, both for your safety and the risk of damage to the router.

Since your Craftsman does not have speed control and is unlikely to have electronic braking, I would focus on whether or not it has a soft-start. If it doesn't have a soft-start you will feel a very noticable torque in the router (trying to rotate) when you turn it on. Soft-start is added to some routers to accelerate the router speed slowly (speeding up over a second or two) rather than turning on like a light switch.

I hope this helps.

Jim

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post #4 of 20 (permalink) Old 03-28-2012, 07:15 AM
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If your router does not have speed control, it does not have soft start either. both features are provided by the same electronics. The HF unit should work very well with your router, Mike.
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post #5 of 20 (permalink) Old 03-28-2012, 12:24 PM
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Quote:
Originally Posted by mr500 View Post
Hello all...I have a craftsman router that is not var speed. Only has 0-25000. I want to use the speed controller I found over at harbor freight. Anyone have any luck with those?

Looking at making my first raised panel doors. The cutter only needs to run at 12000. Any help for a newbie will be most appreciated
I use the HF speed controller with my PC 892 table router and it works just fine. Even if it only lasts a year and has to be replaced I have still saved money.

When something is advertised as being foolproof there is always a better class of fool that comes along to prove them wrong.
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post #6 of 20 (permalink) Old 03-28-2012, 03:00 PM Thread Starter
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Great Thanks so much. I have 2. The one I want to use does not have soft start. The other one does. Again great info thanks a BUNCH!!!!!

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post #7 of 20 (permalink) Old 03-29-2012, 12:57 AM
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I have been using the HF speed controller for a few months and it works great with my older routers.

wbh1963 is flowing with the grain in Arlington, Washington, USA

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post #8 of 20 (permalink) Old 03-29-2012, 01:34 AM
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Question: why can't a simple dimmer control be wired up as a speed control for a router with neither variable speed or soft start?
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post #9 of 20 (permalink) Old 03-29-2012, 02:34 AM
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Question: why can't a simple dimmer control be wired up as a speed control for a router with neither variable speed or soft start?

In North America most line power is 60 cycles per second (60hz). A huge portion of the rest of the planet uses a 50hz system. The RPM of 'dumb motors' can be affected by reducing or increasing the frequency or voltage delivered to the motor.

I'm not entirely sure what the affects of lowering the voltage to decrease the speed would be. As I understand it, the speed control devices manufactured for the 'router' application function by removing some of the AC pulses from the time period.

I suspect that decreasing the frequency instead of the voltage minimizes the proportional loss of torque (from the horsepower potential of the motor).

Would any of the 'real' motor geniuses on the board like to jump into this foray and let us know how far off (or possibly on!) target my best guesses are?

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post #10 of 20 (permalink) Old 03-29-2012, 07:35 AM
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Question: why can't a simple dimmer control be wired up as a speed control for a router with neither variable speed or soft start?
Insufficient current rating.. they are usually only for a couple of hundred watts of lighting or less. If you can find a 15 amp one, it might work.. never tried it!
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