subk2002
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| posted on 25/7/04 at 04:29 PM |
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R1 clocks problem?
Hi guys iv got everything wired in i think but my clocks keep jumping to 8000revs does anyone know how to sort it??
Cheers Drew
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progers
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| posted on 25/7/04 at 04:33 PM |
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Sounds like one of the diagnostic modes built into the clocks. For example if the EXUP is not connected it will alternate between correct rpm and some
fixed value of rpm as you report. Have you got the R1 worshop manuals?? It describes this behaviour in there.
Cheers
Paul
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subk2002
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| posted on 25/7/04 at 04:51 PM |
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Do you know what page i cant see it??
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ChrisBradley04
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| posted on 25/7/04 at 05:39 PM |
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Assuming your using the 2000/2001 carb model, it's page 66 titled Self Diagnosis.
I have attached an exert (I hope it works) that shows the various modes which hopefully is a bit quicker.
Regards
Chris
 
Rescued attachment revs.JPG
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subk2002
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| posted on 25/7/04 at 05:41 PM |
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Its a 99 iv got 
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ChrisBradley04
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| posted on 25/7/04 at 05:44 PM |
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Sorry mate, I don't have any info on that one.
For what it's worth. my money would be on Paul's suggestion of EXUP.
Regards
Chris
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subk2002
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| posted on 25/7/04 at 06:03 PM |
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Iv had a look at my manual and it says its the fuel warning light and sensor. ill need to have a look and see what i can do .
Cheers for the help guys
Drew
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ChrisBradley04
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| posted on 25/7/04 at 06:35 PM |
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BTW, I got round the fuel sensor issue by fitting a variable resistor in the loom to mimic the fuel sensor. They cost about 20p at Maplins and you
just twist the resistor until the clocks are happy.
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fuzzy1
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| posted on 26/7/04 at 11:39 AM |
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R1 clocks problem
I was looking on a web site the other day about the EXUP. It would appear that race bikes have this disabled as it has no benefit on the track. You
can not just put a resistor across were the servo motor is because it sends out pulses at start up. If the management system does not see these it
sends out error codes and the rev counter pulses. The site produced a circuit to mimic the servo using a couple of semiconductor chips which means the
servo and value can be removed. If anyone is interested in the circuit I will post it when I get in from work.
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subk2002
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| posted on 26/7/04 at 02:17 PM |
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Hi chris how do i wire it ??
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subk2002
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| posted on 27/7/04 at 10:37 AM |
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Iv got the clocks to stop pulseing up to 8000rpm but the petrol light is on iv put plenty of petrol in.
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ChrisBradley04
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| posted on 27/7/04 at 07:52 PM |
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I connected up a 1k variable resitor to the wires that would have gone to the fuel tank sender.
It was simply a case of chopping the connector off and soldering the wires onto the resistor.
At one extreme the resistance is 0 and the other 1000 ohms, so you twist the resistor until you find the resistance that stops the light flashing. Off
the top of my head it was about 650 ohms but don't quote me on that.
Hope this helps.
Regards
Chris
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subk2002
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| posted on 27/7/04 at 10:18 PM |
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Thank chris i will have a go tomorrow.
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subk2002
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| posted on 30/7/04 at 11:21 PM |
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Hi chris i got a 1k resistor today and it works fine thanks for the help
Cheers Drew
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