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Post Subject:

Leaving the key on

Reply from: Blattus Slafaly 0/00 ? ? ?
Date: 25 Mar 2008, 17:17
Leaving the key on

In today's cars and bikes with electronic ignition and fuel injection,
does it hurt to leave the key on without starting the engine? Used to be
you could burn out the points or coil, don't have them any more. I
realize it will drain the battery flat if the lights come on too if left
on too long.



--
Blattus Slafaly ? 3 :) 7/8

Reply from: The Older Gentleman
Date: 25 Mar 2008, 20:23
Re: Leaving the key on

Blattus Slafaly 0/00 ? ? ? <boobooililililil@roadrunner,com > wrote:

> In today's cars and bikes with electronic ignition and fuel injection,
> does it hurt to leave the key on without starting the engine? Used to be
> you could burn out the points or coil, don't have them any more.

Yes, they do. Coils, anyway.


--
BMW K1100LT Ducati 750SS Honda CB400F, SL125 & SH50
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."

Reply from: Blattus Slafaly 0/00 ? ? ?
Date: 26 Mar 2008, 13:27
Re: Leaving the key on

The Older Gentleman wrote:
> Blattus Slafaly 0/00 ? ? ? <boobooililililil@roadrunner,com > wrote:
>
>> In today's cars and bikes with electronic ignition and fuel injection,
>> does it hurt to leave the key on without starting the engine? Used to be
>> you could burn out the points or coil, don't have them any more.
>
> Yes, they do. Coils, anyway.
>
>
But you don't have mechanical points that could be closed and firing the
coil constantly. They are electronically triggered.

--
Blattus Slafaly ? 3 :) 7/8

Reply from: TOG@Toil
Date: 26 Mar 2008, 14:03
Re: Leaving the key on

On 26 Mar, 12:27, Blattus Slafaly 0/00 ? ? ?
<boobooililili...@roadrunner,com > wrote:
> The Older Gentleman wrote:
> > Blattus Slafaly 0/00 ? ? ? <boobooililili...@roadrunner,com > wrote:
>
> >> In today's cars and bikes with electronic ignition and fuel injection,
> >> does it hurt to leave the key on without starting the engine? Used to be
> >> you could burn out the points or coil, don't have them any more.
>
> > Yes, they do. Coils, anyway.
>
> But you don't have mechanical points that could be closed and firing the
> coil constantly. They are  electronically triggered.
>
I'm aware of that. I don't know whether modern electronics ignitions
constantly energise the coil or not. All I do know is that electronic
ignition systems have them, contrary to what you asserted.

Reply from: Blattus Slafaly 0/00 ? ? ?
Date: 26 Mar 2008, 17:34
Re: Leaving the key on

TOG@Toil wrote:
> On 26 Mar, 12:27, Blattus Slafaly 0/00 ? ? ?
> <boobooililili...@roadrunner,com > wrote:
>> The Older Gentleman wrote:
>>> Blattus Slafaly 0/00 ? ? ? <boobooililili...@roadrunner,com > wrote:
>>>> In today's cars and bikes with electronic ignition and fuel injection,
>>>> does it hurt to leave the key on without starting the engine? Used to be
>>>> you could burn out the points or coil, don't have them any more.
>>> Yes, they do. Coils, anyway.
>> But you don't have mechanical points that could be closed and firing the
>> coil constantly. They are electronically triggered.
>>
> I'm aware of that. I don't know whether modern electronics ignitions
> constantly energise the coil or not. All I do know is that electronic
> ignition systems have them, contrary to what you asserted.
Not all have them. You can get high voltage from mags and capacitors
with solid state devices.

--
Blattus Slafaly ? 3 :) 7/8

Reply from: TOG@Toil
Date: 26 Mar 2008, 17:50
Re: Leaving the key on

On 26 Mar, 16:34, Blattus Slafaly 0/00 ? ? ?
<boobooililili...@roadrunner,com > wrote:
> TOG@Toil wrote:
> > On 26 Mar, 12:27, Blattus Slafaly 0/00 ? ? ?
> > <boobooililili...@roadrunner,com > wrote:
> >> The Older Gentleman wrote:
> >>> Blattus Slafaly 0/00 ? ? ? <boobooililili...@roadrunner,com > wrote:
> >>>> In today's cars and bikes with electronic ignition and fuel injection,
> >>>> does it hurt to leave the key on without starting the engine? Used to be
> >>>> you could burn out the points or coil, don't have them any more.
> >>> Yes, they do. Coils, anyway.
> >> But you don't have mechanical points that could be closed and firing the
> >> coil constantly. They are  electronically triggered.
>
> > I'm aware of that. I don't know whether modern electronics ignitions
> > constantly energise the coil or not. All I do know is that electronic
> > ignition systems have them, contrary to what you asserted.
>
> Not all have them. You can get high voltage from mags and capacitors
> with solid state devices.
>

OK, well, I'm not aware of any bikes that don't. There may be some,
but the number will be so insignificant as not to be worth
considering. Perhaps you'd name a few electronic ignition bikes that
don't have coils, because Usenet, like life, is full of surprises and
every day is a schoolday.

That ends my reaction to your dissembling, I'm afraid.

Reply from: oldgeezer
Date: 26 Mar 2008, 22:17
Re: Leaving the key on

Blattus Slafaly 0/00 ? ? ? schreef:
> In today's cars and bikes with electronic ignition and fuel injection,
> does it hurt to leave the key on without starting the engine? Used to be
> you could burn out the points or coil, don't have them any more. I
> realize it will drain the battery flat if the lights come on too if left
> on too long.
>
>
>
> --
> Blattus Slafaly ? 3 :) 7/8

I was told the following:

The common ignition systems that use a coil, all work through the very
strange fact
that a variating magnetic field induces a voltage in a copper wire.
The faster it changes, the better the effect.

Variating a field can be done by switching the field ON, but also by
switching it OFF.

Switching off is the old fashioned point controlled system. That can
fry the coil
if you leave the key on, because all the time no spark is needed, a DC
current runs
through the primary winding.

There is an electronic version, that merely replaces the points with a
piece of electronics. That one fries the coil too.
Unfortunately many people call it a CDI, which it is not.

A CDI works by switching the field ON.
As long as there is no spark needed, the CDI unit fills a condenser to
about 400
Volts.
The 400 Volts are created by some solid state circuitry from the
original 12 Volts.
When the spark is needed, the condenser is discharged through the
coil, and
thus the spark is created.
This one will not fry the coil. Current only runs through the coil at
sparking time.


Coils of both types (points vs. CDI) differ.
The points type is built to let the magnetic field disappear asap,
while a coil for the CDI is built to create a magnetic field asap.

Rob.

Reply from: The Older Gentleman
Date: 26 Mar 2008, 22:33
Re: Leaving the key on

oldgeezer <schreuderrob@yahoo,com > wrote:

> Coils of both types (points vs. CDI) differ.
> The points type is built to let the magnetic field disappear asap,
> while a coil for the CDI is built to create a magnetic field asap.

That's interesting. I didn't know that.

OK, so what about coils for points ignition engines that have been
converted to electronic? I've never seen it stated that you must replace
the coils at the same time as fitting the electronic kit.

(Electrics and electronics are my blind spot)


--
BMW K1100LT Ducati 750SS Honda CB400F, SL125 & SH50
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."

Reply from: oldgeezer
Date: 26 Mar 2008, 23:07
Re: Leaving the key on

The Older Gentleman schreef:
> oldgeezer <schreuderrob@yahoo,com > wrote:
>
> > Coils of both types (points vs. CDI) differ.
> > The points type is built to let the magnetic field disappear asap,
> > while a coil for the CDI is built to create a magnetic field asap.
>
> That's interesting. I didn't know that.
>
> OK, so what about coils for points ignition engines that have been
> converted to electronic? I've never seen it stated that you must replace
> the coils at the same time as fitting the electronic kit.
>
> (Electrics and electronics are my blind spot)
>
>
> --
> BMW K1100LT Ducati 750SS Honda CB400F, SL125 & SH50
> chateau dot murray at idnet dot com
> "What you're proposing to do will involve a lot of time
> and hassle for no tangible benefit."

Replacing points by a solid state switch means
that the system still is the cut OFF current type,
not the switch current ON type.
Thus there is no need to change the coil.

CDI=Condenser Discharge Ignition system

Rob.

Reply from: The Older Gentleman
Date: 26 Mar 2008, 23:18
Re: Leaving the key on

oldgeezer <schreuderrob@yahoo,com > wrote:

> Replacing points by a solid state switch means
> that the system still is the cut_OFF_current type,
> not the switch_current_ON type.
> Thus there is no need to change the coil.

I have to say, I know nothing about electronics, but I suspect you know
less than you think you do.
>
> CDI=Condenser Discharge Ignition system

And this statement is why I think that.


--
BMW K1100LT Ducati 750SS Honda CB400F, SL125 & SH50
chateau dot murray at idnet dot com
"What you're proposing to do will involve a lot of time
and hassle for no tangible benefit."

Reply from: Mark Olson
Date: 26 Mar 2008, 23:59
Re: Leaving the key on

The Older Gentleman wrote:
> oldgeezer <schreuderrob@yahoo,com > wrote:
>
>> Replacing points by a solid state switch means
>> that the system still is the cut OFF current type,
>> not the switch current ON type.
>> Thus there is no need to change the coil.
>
> I have to say, I know nothing about electronics, but I suspect you know
> less than you think you do.

Keeping schtum.

>> CDI=Condenser Discharge Ignition system
>
> And this statement is why I think that.

He's basically right, CDI stands for Capacitive/capacitor
Discharge Ignition, if I am not mistaken. Condens[oe]r is
just an old name for a capacitor. If anyone has the right
to use the older term, it's a cloggie:

http :// www .uoguelph.ca/~antoon/gadgets/caps/caps.html

--
'01 SV650S '99 EX250-F13 '98 ZG1000-A13
OMF #7

Reply from: oldgeezer
Date: 27 Mar 2008, 00:22
Re: Leaving the key on

Mark Olson schreef:
> The Older Gentleman wrote:
> > oldgeezer <schreuderrob@yahoo,com > wrote:
> >
> >> Replacing points by a solid state switch means
> >> that the system still is the cut OFF current type,
> >> not the switch current ON type.
> >> Thus there is no need to change the coil.
> >
> > I have to say, I know nothing about electronics, but I suspect you know
> > less than you think you do.
>
> Keeping schtum.
>
> >> CDI=Condenser Discharge Ignition system
> >
> > And this statement is why I think that.
>
> He's basically right, CDI stands for Capacitive/capacitor
> Discharge Ignition, if I am not mistaken. Condens[oe]r is
> just an old name for a capacitor. If anyone has the right
> to use the older term, it's a cloggie:
>
> http :// www .uoguelph.ca/~antoon/gadgets/caps/caps.html
>
> --
> '01 SV650S '99 EX250-F13 '98 ZG1000-A13
> OMF #7

Ahh: Condensator is the Dutch word for your capacitor.

I almost thought TOG accused me of googling answers.
If I did that, I would have come up with the correct
Capacitor Discharge Ignition.

I'm learning!
Rob.


Reply from: oldgeezer
Date: 27 Mar 2008, 01:16
Re: Leaving the key on

oldgeezer schreef:
> Mark Olson schreef:
> > The Older Gentleman wrote:
> > > oldgeezer <schreuderrob@yahoo,com > wrote:
> > >
> > >> Replacing points by a solid state switch means
> > >> that the system still is the cut OFF current type,
> > >> not the switch current ON type.
> > >> Thus there is no need to change the coil.
> > >
> > > I have to say, I know nothing about electronics, but I suspect you know
> > > less than you think you do.
> >
> > Keeping schtum.
> >
> > >> CDI=Condenser Discharge Ignition system
> > >
> > > And this statement is why I think that.
> >
> > He's basically right, CDI stands for Capacitive/capacitor
> > Discharge Ignition, if I am not mistaken. Condens[oe]r is
> > just an old name for a capacitor. If anyone has the right
> > to use the older term, it's a cloggie:
> >
> > http :// www .uoguelph.ca/~antoon/gadgets/caps/caps.html
> >
> > --
> > '01 SV650S '99 EX250-F13 '98 ZG1000-A13
> > OMF #7
>
> Ahh: Condensator is the Dutch word for your capacitor.
>
> I almost thought TOG accused me of googling answers.
> If I did that, I would have come up with the correct
> Capacitor Discharge Ignition.
>
> I'm learning!
> Rob.

Even more learning, cause I read words unknown to me.
'schtum' makes me think of a German word, which in Dutch
translates to 'stom'. British probably 'stupid'.
I think I got the grasp on that word.

'Cloggie' does not ring a bell for me. And like our morphing
friend, I go for wikipedia and find a story about
a BBC-program, a comic strip, read all of that and
at the end I read:
Cloggies are what Dutch people are sometimes called.

Good deduction Mark.

Rob.

Reply from: Mark Olson
Date: 27 Mar 2008, 01:37
Re: Leaving the key on

oldgeezer wrote:

> Even more learning, cause I read words unknown to me.
> 'schtum' makes me think of a German word, which in Dutch
> translates to 'stom'. British probably 'stupid'.
> I think I got the grasp on that word.

"I'm saying nowt"

> Cloggies are what Dutch people are sometimes called.
>
> Good deduction Mark.

Easy deduction to make, since your newsreader's default
quoting says <name> "schreef"...

--
'01 SV650S '99 EX250-F13 '98 ZG1000-A13
OMF #7

Reply from: Dieseldes
Date: 27 Mar 2008, 10:56
Re: Leaving the key on


"oldgeezer" <schreuderrob@yahoo,com > wrote in message
news:1d611b9c-b069-4966-9d77-19e59a9316a7@s13g2000prd.googlegroups,com ...
snip

> Even more learning, cause I read words unknown to me.
> 'schtum' makes me think of a German word, which in Dutch
> translates to 'stom'. British probably 'stupid'.
> I think I got the grasp on that word.
>
Where I come from (Scotland) 'keeping Schtum' is taking to mean 'keeping
quiet' in the sense of don't tell anyone

> 'Cloggie' does not ring a bell for me. And like our morphing
> friend, I go for wikipedia and find a story about
> a BBC-program, a comic strip, read all of that and
> at the end I read:
> Cloggies are what Dutch people are sometimes called.
>
they wear clogs.....

Des




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