OZ ATV :: The Australian ATV Forum

[priesty]

Can someone please enlighten me (I'm electrically challenged) on the difference between a "normally open" & "normally closed" type kill switch, & how they work ?
I'm told I need to have a "closed" swith on the 700xx, is that because of EFI ?
I'm confused
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The term "Foolproof" seriously underestimates the ingenuity of Fools.


08 700xx

[Dino]

Normally open means that no continuity exists through the switch in it's normal position.
Normally closed means that continuity exists through the switch in it's normal position.

On some set lanyard set ups, like outboard motors, when the clip at the switch end pulls out, as in man overboard, the switch is activated to turn off the motor.
It either earths the electrical supply to the spark out ( normally open ) OR cuts the electrical supply to the spark. ( Normally closed. )
Clear as mud eh?
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Remember. We elect politicians, but we have to deal with bureaucracy.
Notice that crazy in the bureaucrats.

[priesty]

Ok, so my old kill switch on my 400ex used to run to earth from the coil wire via the switch, that makes it a "normally open" switch ?

So if I get a "normally closed" switch for the xx I need to wire it to the two handlebar kill switch wires , whereby when the tether is pulled it interrupts the positive power that runs through the switch, instead of earthing out. Is this correct ?

I think my brain is shorting out just tryin to get my head around it.


_________________
The term "Foolproof" seriously underestimates the ingenuity of Fools.


08 700xx

[Dino]

Ok, so my old kill switch on my 400ex used to run to earth from the coil wire via the switch, that makes it a "normally open" switch ?
Yep. When you threw the switch, it earthed out the spark.
So if I get a "normally closed" switch for the xx I need to wire it to the two handlebar kill switch wires , whereby when the tether is pulled it interrupts the positive power that runs through the switch, instead of earthing out. Is this correct ?
NOT QUITE.
Yes, you only need to wire it to a wire feeding one of the kill switches.
Whatever sort that kill switch is now, is the sort of tether switch you want to put in.
If your kill switch earths out the spark, then you want your tether switch to do the same.
OR
If your kill switch cuts the spark, then you want your tether switch to do the same.
Get that sorted and it's beer o'clock.
Tip: Put a tempory fuse in if your not sure. Fuses are cheaper to replace than CDI', and fuel programmers.

I think my brain is shorting out just tryin to get my head around it.
Clutch start it by licking a 9 volt battery. Works for me.
_________________
Remember. We elect politicians, but we have to deal with bureaucracy.
Notice that crazy in the bureaucrats.

[priesty]

Than ks Dino I think I got it now, now where did I put that 9v battery??
_________________
The term "Foolproof" seriously underestimates the ingenuity of Fools.


08 700xx

[doel#20]

Hey mate, On my xx i brought one of the pro design Normaly open kill switch's, i wired one wire to earth and one to the blue wire with a yellow stripe (Trigger wire)that runs out from the stator

here is a link to wiring a normaly closed switch on the 700xx

http://www.club700xx.com/vb/showthread.php?t=5059

if you havn't checked out club700xx its good site with plenty of info

Cheers Chris

Last edited by doel#20 on Wed Oct 19, 2011 7:20 pm; edited 1 time in total

[priesty]

Well, bought a new switch, one with two sets of terminals, one for "open" circuit & one for "closed",set it up for closed, works fine.
Thanks all.
_________________
The term "Foolproof" seriously underestimates the ingenuity of Fools.


08 700xx