full thottle switch - how ammeters work

[flaatr at yahoo.com (Euroroc II)]

Yes your right... I was still thinking Buick V6  ;-)

On a 4 cylinder motor
90% dwell = 100% duty cycle
45 dwell = 50% duty cycle
0 dwell = 0 duty cycle

-RGK-

At 03:22 PM 9/23/2003 -0400, Dan Bubb wrote:
>Actually, the Bentley primarily refers to duty cycle and the recommended
>setting is 50%.
>How this corresponds to Dwell depends on the setting of the dwell meter.
>If the dwell meter is set for a 4 cylinder engine then 100% duty cycle
>corresponds to 90 deg dwell
>If the dwell meter is set for a 6 cylinder engine then 100% duty cycle
>corresponds to 60 deg dwell
>If the dwell meter is set for a 8 cylinder engine then 100% duty cycle
>corresponds to 45 deg dwell
>
>It's easiest to set the meter for a 4 cylinder then the duty cycle and dwell
>are almost the same.
>
>I'd be willing to bet you could set the mixture using a volt meter, but I'd
>think the characteristics of the voltmeter (capcitance, inductance,
>resistance) would alter the reading for a given dwell. (please attack me
>viciously if I'm wrong!)
>
>So, when are we going to discuss how changing duty cycle/dwell effects
>engine performance????
>Dan
>
>----- Original Message -----
>From: "Euroroc II" <flaatr@yahoo.com>
>To: <scirocco-l@scirocco.org>
>Sent: Tuesday, September 23, 2003 2:11 PM
>Subject: RE: full thottle switch - how ammeters work
>
>
> > Almost afraid to get into this but Dwell is a measurement of Duty Cycle
>(On
> > time vs. Off time) but on a slightly different scale... 0% dwell or Duty
> > Cycle is always off... 100% Duty Cycle is always on and is measured as 60
> > Degrees... 50% Duty Cycle is half time on and half off and is read as 30
> > Degrees. It can be measured as current or you can also get very accurate
> > measurements measuring voltage... depends on the meter you own. The
> > ultimate measurement is neither volts or amps, mA or mV if that's more
> > comfortable, but a measurement of percent time.
> >
> > If you have a Fluke or other meter that reads Duty Cycle... just convert
> > your dwell numbers to duty cycle.
> >
> > -Raffi
> >
> >
> > At 12:16 PM 9/23/2003 -0500, ATS - Patrick Bureau wrote:
> > >I am sorry if my email offended, it was not ment that way.
> > >
> > >well I have ordered a new multimeter that will do Dwell, so that will
>solve
> > >the problem, but now I am confused, if dwell is not mA nor mV , then why
> > >everyone talks about a mA reading on the test lead or am I so dense that
>I
> > >am mixing up things together and doing a process of self confusion and in
> > >annoyance by everyone with my dumb ass questions..
> > >
> > >
> > >ATS - Patrick Bureau - txrocco@sbcglobal.net
> > >----------------------------------------------
> > >MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
> > >ICQ:32918816           |AIM:Texasscirocco
> > >----------------------------------------------
> > >
> > >
> > >=>-----Original Message-----
> > >=>From: Dan Bubb [mailto:jdbubb@ix.netcom.com]
> > >=>Sent: Tuesday, September 23, 2003 9:08 AM
> > >=>To: ATS - Patrick Bureau; T. Reed
> > >=>Cc: Allyn; scirocco-l@scirocco.org; L F
> > >=>Subject: Re: full thottle switch - how ammeters work
> > >=>
> > >=>
> > >=>Dwell is NEITHER mA or mV.
> > >=>I'm not a hotshit electrical engineer and don't know anything
> > >=>about ammeters
> > >=>and voltmeters, but I do know that you need to measure dwell on
> > >=>your car and
> > >=>you need a dwell meter to do it!
> > >=>Get a dwell meter. Something that has a scale on it that says "dwell"!
> > >=>Then we can quibble about what the setting should be and how much
> > >=>it doesn't
> > >=>effect the power your engine makes!
> > >=>Dan
> > >=>
> > >=>
> > >=>----- Original Message -----
> > >=>
> > >
> > >
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> >
> >
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