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Magneto kill switch?

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I'm wondering if it's a practical proposition to fit a kill switch to the Lucas MOIL magneto. It would be really useful to have such a facility, but I can't figure out what one would earth in order to kill the mag. can anyone help please?

Gordon

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Do you need one if you have a valve lifter? I always stop my engine by using the exhaust valve lifter. Also good for keeping the revs down on muddy descents (not for the concours brigade of course).

Other Gordon

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I have a valve lifter on the Norton which is fine for stopping the engine, but I also have an older bike (a Levis) which doesn't have a lifter (Though I could fit one). Thought it might be useful to have a kill switch as well as this could be used as a basic ignition switch (a bit of security) also a switch to ensure that I have remembered to turn my oil tap on. These could be achieved quite easily with a couple of switches and a single wire if there was a simple way of killing the mag.

Gordon

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What you need is the equivalent of the earthing end cap on a K2F (or K1F) type of magneto. Should be possible to fabricate one but I have never seen it done. Hoping to get the 1913 Douglas up and running shortly - no valve lifter there either! Other Gordon.

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I too would like to have the facility of a Magneto kill on my MO1-equipped ES2. Not really given this much serious thought yet but wondered why I couldn't just connect an additional cable alongside the plug lead as it exits the mag and run this to the frame via a switch. Is my thinking flawed? Only problem I can think of is that I could be adding a possible rough-running/misfiring source....

John

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I'd be careful with that John. You really want the earthing kill button on the low tension side of the mag, I would worry about receiving electric shocks from the high tension side.

Colin.

Previously wrote:

IE9 Problems so please ignore previous "phantom" posting! I too would like to have the facility of a Magneto kill on my MO1-equipped ES2. Not really given this much serious thought yet but wondered why I couldn't just connect an additional cable alongside the plug lead as it exits the mag and run this to the frame via a switch. Is my thinking flawed? Only problem I can think of is that I could be adding a possible rough-running/misfiring source....

John

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Yeah - I had considered that - could be an interesting way of "pepping-up" a flagging rider! Seriously though, I'm presently rooting through various old Lucas service documents to see if I can find some way of adding a cut-out without having to manufacture some kind of earthing brush arrangement a la K2F (on the twins) - that would be too much fuss and I'd just use the decompressor leverlike others. Cheers, John

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Previously wrote:

I'm wondering if it's a practical proposition to fit a kill switch to the Lucas MOIL magneto. It would be really useful to have such a facility, but I can't figure out what one would earth in order to kill the mag. can anyone help please?

Gordon

Hello Kill switches Well I have two of them on my Manxman , One on/off switch is under at the side of seat and the other is on the handlebar next to the throttle emergencystop button all Norton,s should have one!has all modern bike do have them fitted ,some have a lanyard that fits to you harm and if you come of the bike it stops the engine,there all easy to fit if you have the know how like me .i am just a female you know!

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Yes Anna, but I don't think this is entirely relevant to trying to fit an earthing switch to an MO1 magneto - unless you can enlighten us all with how to do that?

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Gordon, you know the answer, simply dump the complete power unit and replace it with one from a Manxman! John.

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Previously wrote:

Yes Anna, but I don't think this is entirely relevant to trying to fit an earthing switch to an MO1 magneto - unless you can enlighten us all with how to do that?

the mo 1 has a earth brush at one end of the magneto you can solder a wire from there its should cut to the magneto your AJD

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Don't think that would work. You need to be able to earth the low tension side of the circuit. If you run a wire from the earthing brush to earth, it wouldn't actually do anything... Gordon.

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Gordon

You have to find a way of connecting (via a brush me thinks) to the LT side of the mag. Which is also the 'live' side of the points so that your kill switch in effect shorts/earths the points. I think you will have to talk with an experienced repairer of these mags to see if there was ever a version with such a thing, or the mag repairer has seen it done.

While I have your ears by the way I have developed a real ignition switch for use on the Magneto bike. This shorts the magneto and at the same time breaks the main battery feed leaving machine safe from fiddling fingers and flat batteries. Interested? Product available from A O Services.co.uk

Al Osborn.

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Once you fitted the above gubbins then I sell a magneto kill switch that also open circuits the battery, and with a key! So you can leave your bike with some thoughts of security. aoservices.co.ukAL O
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I made up such a device using a plastic cap from an aerosol can, the earth brush holder from a K2F, and a suitable nut to hold it in place. A wire can be attached to the brush holder for the earth lead. Just don't touch the points cap holder arm to the earth brush holder

Paul

Previously gordon_smith wrote:

I'm wondering if it's a practical proposition to fit a kill switch to the Lucas MOIL magneto. It would be really useful to have such a facility, but I can't figure out what one would earth in order to kill the mag. can anyone help please?

Gordon

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So, Al , the original poster wanted a kill switch, not a security device. A key switch is a false sense of security versus a chain & padlock IMHO. A key wont stop someone from loading the bike into a truck!

( GUBBINS, really?).

gubbins

(ËÉ?ÊbÉ?nz)

n (functioning assingular)anobject oflittle ornovalue

For years, folks have wanted a simple kill switch for the MO1 magdyno & "The Magneto Guys" have produced one, at a good price & a nice piece of kit at that.

According to your website, your device is for "TWINS", not singles? Is that correct?

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Hi Skip

Faulty dictionary! 'Gubbins' implies abunch of stuff probably used for some complicated purpose that baffles the outsider. As in 'there's a load of gubbins inside that timing cover'...it doesn't imply it's of no use - it just means I can't be bothered (or am unable) to describe it in any more detail! It is a vitally necessary technical word - you might use it for the internals of your wife's sewing machine but not for the contents of her sewing basket!

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Thanks for the "translation"! I looked deeper & found:

gubbinsThe innards / innerworkings.That fox got run over and all its gubbins oozed out.

general clutter, stuff, a collection or assortment of unconnected items.He had a lot of gubbins in his backpack

Gubbins = stuff.A common expression in Northern England, and the better parts of the rest of the world.Neil: "Where's the 27mm impact socket?"Zippy: "It's over there on the floor, next to that pile of welding gubbins."

Objects of little or no value. A word frequently used while moving houses, e.g. "I can't take it any more! All these gubbins to sort out!"nick nacks,garbage,small toys, pictures,books,pencils,utencils,paper,Gubbins etc......

A surname used in the UK to 'pass off' or satisfy someone who is pestering you for information. 'Gubbins' is mainly used when individuals need a quick answer to questions they do not wish to entertain.'Hey, can you get me guest list for Saturday?''Yeah... use Gubbins at the door''Do you know who is responsible for the coffee machine in this office?''Yeah... I think it's Gubbins'

Or, by Merriam-Webster:

gubbins

noun plural but singular or plural in construction gub?bins ËgÉbÉÌnzPopularity: Bottom 30% of words

Definition ofgubbins

  1. 1dialectal, British : fish parings or refuse;broadly : any bits and pieces: scraps

  2. 2British : gadgets,gadgetry <thegubbins for changing a tire> <all the navigationalgubbins â J. L. Rhys>

  3. 3British : a foolish or futile person: simpleton <you sillygubbins>

  4. Or at Dictionary.com:

gubbins

/ËÉ?ÊbÉ?nz/noun (informal)1.(functioning as sing)an object of little or no value2.(functioning as sing)a small device or gadget3.(functioning as pl)odds and ends; litter or rubbish4.(functioning as sing)a silly person

Clear as mud ! :)

 


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