shortie
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| posted on 2/9/05 at 09:19 PM |
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Problem with RPM reading
Right.....here's a wierd one!
I refitted my Digidash this evening (after it has been repaired for a minor fault) and I noticed that the rpm was reading way above what it actually
should, the engine normally idles around 1100rpm but it was reading more like 2100rpm!
The only thing I have changed is that I have fitted a Honda Superdream rectifier and this has an extra black wire that has to go into a circuit which
is made live with the ignition. I chose to use the black\white wire feeding the CDI and coils to wire it into. The Digidash RPM reading was perfect
before this.
Now after testing all the wiring I finally decided (because I couldn't think of anything else!!) to change the pulses per cycle on the Digidash
from 2 (which is should be for a bike engine) to 4 and then the RPM seems to read what it should!
Now I can't see why but would wiring the rectifier into this circuit make the pulses per cycle different??
Any ideas greatly appreciated!!
Wiring diagram here if anyone wants a look http://www.shortshouse.co.uk/WiringDiagramv19.pdf
ta,
Rich.
[Edited on 2/9/05 by shortie]
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ReMan
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| posted on 2/9/05 at 09:51 PM |
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It shouldnt. But then...............!
Have you ran it up with a voltmeter across the battery, just to check it regulates to 13.6-14.2v nicely, just in case its overcharging (with/without
extra wire connected)?
www.plusnine.co.uk
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shortie
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| posted on 2/9/05 at 09:58 PM |
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are you on MSN colin?
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shortie
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| posted on 2/9/05 at 09:59 PM |
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I haven't tested the voltage without the wire, with it connected Digidash reads 14.2 - 14.5 which is perfect
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