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RC
Joined: 25 Mar 2007
Posts: 2637
Location: Australia
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 Posted: Tue Dec 21, 2010 6:12 am Post subject: |
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| Min wrote: | | RC wrote: | Yes, (Why do I think Min will jump in here???  ) |
We both have ... strong personalities. I like you RC, you post good stuff, I try to refrain from needless conflict with you.
Min |
Likewise Min.
Cheers 
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World`s quickest 924 2L slushbox
| Allan @ DTA wrote: | | I have no issue with superchargers, they are for guys who want to drive a car rather than talk about horsepower with their baseball cap on backwards |
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fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
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| Posted: Tue Dec 21, 2010 9:14 am Post subject: |
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| RC wrote: | | fiat22turbo wrote: | | Sensor should provide a square wave output. |
Bullshirt!
It`s a VR sensor and will output a SINE WAVE.
Ideally you want a CONSISTENT 0.5mm gap but more will work, as others have found. The important aspect is that the wheel be mounted concentrically, ie. an EVEN gap all round. Any eccentricities will result in timing variations, then lost/ dropped tooth counts if severe.
Apparently EDIS tolerates quite a poor/ irregular signal. Realize you only have MS1 and am more or less stuck with EDIS. Personally would suggest upgrading to the MS2 processor (plug in daughter board) sooner rather than later. Then you can piss off the EDIS and allow the MS, running the extra code, to decode the wheel directly. Regardless what the Ford fans say, that is the preferred option. V3.0 board has integral VR processing but is an easy add-on to earlier PCB`s. MS2 allows for more inputs, outputs, and features that MS1 simply can not provide with it`s limited capabilities. Obvious one that comes to mind is integrating your A/C comp clutch, so it disengages when you need all the power, say at 80% TPS.
Easiest and cheapest way to determine toothed wheel signal, if you don`t have a scope, is to use the trigger logger feature of Tuner Studio. Free D/L. Note how you want all the graph, representing individual tooth voltage, to be even. This indicates all teeth are read and a consistent gap.
http://www.efianalytics.com/TunerStudio/#triggerLogger
In all honesty Scorp, you are much better off posting these sorts of MS question on the MS forums. You will get an accurate answer, and any erroneous posts will soon be corrected by those who have the experience and know WTF they`re talking about. At least RTFM as much as you can, and then search the forums. Very unlikely you will experience any unique issues that have not occurred to others previously. |
Okay, stand down mister, I stand corrected.
According to this:
http://www.megamanual.com/ms2/EDIS.htm
The signal is in fact a sine wave from the sensor into the EDIS control module (if used) which then outputs a square wave signal.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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Mike9311
Joined: 14 Dec 2004
Posts: 1798
Location: Chicago-ish
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| Posted: Wed Dec 22, 2010 3:37 am Post subject: |
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I will post some scope pics in a minute as soon as I find where I put them. We spun it up in a lathe and scoped them out. One is the Ford wheel the other was our cantilevered wheel idea we were comparing. ...and it is indeed a Sine wave
Update: Misplaced them but always see them. Will post as soon as I find them. Then they will be organized!
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1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
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Mike9311
Joined: 14 Dec 2004
Posts: 1798
Location: Chicago-ish
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| Posted: Thu Dec 23, 2010 7:38 am Post subject: |
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Here are my pics. This is just energizing the pickup alone (not through anything else as has been mentioned) and scoping the signal to test a trigger wheel concept (tested good BTW). Wheel is now on the car.
So you can test off the car. Someones suggestion of a drill was a great idea
_________________
1980 931 since 1989
1981 Ideola 931 Club Sport
1982 931 Entwicklungsfahrzeug
1979 924 NA ohne 650 mit 471
1982 931 Red Resurrection - 951 IC
1982 931 parts car / resurrection?
1980 924 NA (R&D lightweight)
1982 931 wana-be GTR race car |
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