full thottle switch - how ammeters work

[txrocco at sbcglobal.net (Patrick Bureau)]

when are we going to discuss how it affects the engine, well if the dwell is wrong (mix is wrong) then the engine cannot or can provide the maximum burn capabilities therefore directly affecting gaz consumption and  HP output (a lowusy tuned engine = less HP than a properly tuned engine) 
 
next question...lol


Dan Bubb <jdbubb@ix.netcom.com> 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" 
To: 
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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ATS - Patrick Bureau - txrocco@sbcglobal.net
'85 2.0L Prowler Orange, Kamei X1 Rocco 
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