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Magneto question
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Chad(WI) View Drop Down
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Joined: 11 Sep 2009
Location: NE Wisconsin
Points: 957 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chad(WI) Quote  Post ReplyReply Direct Link To This Post Topic: Magneto question
    Posted: 07 Aug 2016 at 8:44am
So I've been powering a sawmill for quite few years at my local show with my Allis E-60 power unit. The safety issues have been concerning me more and more because I can't be standing right next to it constantly if it would need to be shut down in a hurry. So I had a brainstorm a few months back about installing a remote shut off on it....the type that a person would use on a snowmobile or atv for young riders. Question is this: the switch I bought is only good for ten amps. When the mag is grounded, is there negative current that could potentially damage the switch? Can a multi meter be used to measure and ground the mag to test? Thanks in advance for any input.
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HudCo View Drop Down
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3915 		Post Options Post Options   Thanks (0) Thanks(0)   Quote HudCo Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2016 at 9:02am
think those atv type of switches would be open when pulled apart instead of closed  but the concept is good just need some kind of switch that would close when pulled by a cord or rope stung along the line.  dont think amps woul be any issue.
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Chad(WI) View Drop Down
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Points: 957 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chad(WI) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2016 at 9:20am
Forgot to mention that this switch is electric, 6 volt with 4 AA batteries. Has a wireless remote. Can be wired for normally open or closed position. Thanks again!

Edited by Chad(WI) - 07 Aug 2016 at 3:47pm
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Hubert (Ga)engine7 View Drop Down
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Joined: 12 Sep 2009
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Points: 6469 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hubert (Ga)engine7 Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2016 at 12:57pm
Don't know if I would trust a wireless remote switch for emergency shut down but with a 10 amp rating it should handle the job.
Just an old country boy saved by the grace of God.
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DougS View Drop Down
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Joined: 03 Nov 2011
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Originally posted by Hubert (Ga)engine7 Hubert (Ga)engine7 wrote:

Don't know if I would trust a wireless remote switch for emergency shut down but with a 10 amp rating it should handle the job.

I wouldn't use a wireless switch. Put a hard wired emergency mushroom head switch at the operator position and anywhere else it might be needed.
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Chad(WI) View Drop Down
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Joined: 11 Sep 2009
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Points: 957 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Chad(WI) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2016 at 3:49pm
Originally posted by DougS DougS wrote:

Originally posted by Hubert (Ga)engine7 Hubert (Ga)engine7 wrote:

Don't know if I would trust a wireless remote switch for emergency shut down but with a 10 amp rating it should handle the job.

I wouldn't use a wireless switch. Put a hard wired emergency mushroom head switch at the operator position and anywhere else it might be needed.


That is an awesome idea! Thanks for the input so far guys!
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wayneIA View Drop Down
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Joined: 17 Oct 2009
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Points: 268 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wayneIA Quote  Post ReplyReply Direct Link To This Post Posted: 07 Aug 2016 at 10:06pm
One thought for an emergency shutdown switch that could easily be moved is to get the breakaway switch for the electric brakes on a trailer.  Mount the switch on the power unit and have a long cable attached so that you can pull the cable and ground the magneto.  Just need to make sure the switch is inline enough to allow you to pull the plunger out.  You could potentially put a small pulley on the cable that is mounted to the power unit to give you more of a degree of movement and retain the ability to pull it.  Then the cable can potentially be ran as a "lifeline" (one end connected to the kill switch, and one end on a solid anchor with the cable pulled reasonably snug to allow a pull on the cable to shut the engine down) and anyone on the equipment could shut the engine down in an emergency.
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