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Norton Dominator 99 - Battery isolating switch

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Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 09. 2017

Can't find anything relative by searching the NOC forum:

I'm sure I won't be the first to want to do this, but I want to fit a neat, unobtrusive battery isolating switch to ensure that the electrics are completely off when the bike is not in use regularly, without physically disconnecting the battery.

There are plenty listed on ebay intended for cars which are rather too bulky for a motor cycles.

Any ideas please?.

 

 

Re: Norton Dominator 99 - Battery isolating switch

Posted by Gordon Johnston at January 09. 2017

Car ones are intended for possible high amperage situations. All you need is a modest single pole switch on/off switch - something like a spare headlight switch would do. Halfords or any motor accessory shop should have something suitable.

Your battery shouldn't discharge at any noticeable rate unless your rectifier is iffy. I put my bikes on charge every month or two and the fully charged light goes on in only a few minutes.

Re: Norton Dominator 99 - Battery isolating switch

Posted by peter_breading at January 09. 2017

Richard, if you run a magneto then Alan Osbourne does a nice switch and wiring loom which will isolate battery and short mag to earth to prevent running mode. He can be contacted on 01953 884681 (Thetford) trading as AO Services.

Re: Norton Dominator 99 - Battery isolating switch

Posted by Barry Carson. at January 09. 2017

this is the sort of thing i would fit if i won the lottery it looks quite neat

http://www.autoelectricsupplies.co.uk/product/141/category/30

 

Re: Norton Dominator 99 - Battery isolating switch

Posted by steve_adkins at January 10. 2017

If you google around a bit plenty of bargains if you want something H/H:

 

http://stores.ebay.co.uk/thegreensparkplugco/Battery-/_i.html?_fsub=3325265011&_sid=764494581

But Gordon is right, not much current involved and  as long as not switched under load, should be fine. Check the ratings carefully as usually AC switches are not to happy with DC and de-rate significantly.

 

Your choice.

 

Rgds Steve.

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 10. 2017

Many thanks for all that.

The one Barry refers to is particularly neat, albeit very expensive at £30.00.

 

(It's coil ignition)

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_woolnough at January 10. 2017

I have recently aquired an Ariel W/ng, the p/o has inserted a blade type fuse which he simply removed to isolate the electics,

I have to say I have fitted  similar to all my machines but will  also admit to not removing the fuse when not in use, shall probably do so in future. Kind regards

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 10. 2017

That's a very simple solution with a dual purpose and one that can easily be replaced unlike a key.

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 11. 2017

Thank you for all the good advice.  I looked in my 'I'd better not throw that away'  drawer and found a keyed switch which will probably do the job very well bearing in mind the loading mentioned by Steve.  It will serve the dual purpose of  imobilizing the bike in the absence of any other way of doing so except for those rather useless  blank ignition keys in the headlamp switch.

Ill try and put a picture up when it's done.

Re: Norton Dominator 99 - Battery isolating switch

Posted by anthony_williams at January 11. 2017

Previously richard_evans wrote:

Thank you for all the good advice.  I looked in my 'I'd better not throw that away'  drawer and found a keyed switch which will probably do the job very well bearing in mind the loading mentioned by Steve.  It will serve the dual purpose of  imobilizing the bike in the absence of any other way of doing so except for those rather useless  blank ignition keys in the headlamp switch.

Ill try and put a picture up when it's done.

richard disconnect the fuse kwik and simple

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 12. 2017

True

Re: Norton Dominator 99 - Battery isolating switch

Posted by lionel_yexley at January 12. 2017

You don't need a car-type switch.  No more than 20 Amp DC rating - 10A would probably do.  A quick Fleabay search throws up quite a few collar-mounted types from around £2 - illuminated too!  Panel mounted are a bit more difficult as you need a panel and to make a cut-out for the switch.  I will be using an ignition key type of switch on my Navigator (Still 6 Volts) to give it a little security - but I got it cheap anyway  About £4 as I recall. I have some brass sheet to make up a box for it - you can solder brass easily.  Do you have an inline fuse on the battery?  If not, you should have.  The switch rating can be the same as the fuse.

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 12. 2017

Wish I could post a picture but I can't.  Have uploaded to Photobucket and can't get any further.

Have now fitted a key mounted switch on the negative line with the Dominator being Positive earth.  Made a small plate in aluminium plate and mounted it on the left hand side using the two tool tray fixing points as mounts.

Thanks for that extra information. Best of luck with you're soldering.

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 12. 2017

I agree in principle in the wisdom necessity of having a fused circuit, but:.

a) with a machine having a positive earth should the fuse be on the positive or the negative side.  I imagine the negative otherwise the whole circuit is still live.  and

b) with coil ignition is it good practice to have a fuse incorporated in the ignition circuit, as opposed to the lighting circuit as it could lead to the machine cutting out at a possible crucial time.?

 

(there is no picture)

Attachments

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 14. 2017

Fuses

Re: Norton Dominator 99 - Battery isolating switch

Posted by Paul Knapp at January 14. 2017

On a positive earth bike, the fuse should go, as you say, in the negative circuit.

I have never thought about it before, but to have ignition and lighting circuits both separately fused wouldn't be a bad ideas. Over to the electrical guru's.

Re: Norton Dominator 99 - Battery isolating switch

Posted by alan_osborn at January 14. 2017

The fuse being in the Positive or Negative technically is the same. In fact Triumphs did fuse the earth wire from the battery. Being electrically aware, mains ALWAYS has the fuse in the live side other wise you could have a 'nasty' shock. So I have always had the fuse in the live but it will work in the earth. If you want to fuse the ignition separate to the lights/rest then fine.

Re: Norton Dominator 99 - Battery isolating switch

Posted by richard_evans at January 14. 2017

Thanks for the words of wisdom guys

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