RPM Needle going crazy - 600RR.net
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post #1 of 4 (permalink) Old 05-29-2012, 02:29 PM Thread Starter
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RPM Needle going crazy

So the other day this started, when the bike starts up the cluster does its thing and needle goes up and down fine as usual. When riding its going ok until I accelerate real hard and the needle starts jumping until it goes all the way around and then moves a little.

When I shut the bike off and on the needle goes back to 0 and it works again til I give it some throttle again.

I have done gauge LEDs but they have been done for awhile and this just started.

Anyone got any ideas?

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post #2 of 4 (permalink) Old 05-29-2012, 03:00 PM
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Yes. Most likely one or two of your 4 solder joints for the RPM motor on the circuit board are bad. When the bike is sitting idle there is a connection. The vibrations that you cause from accelerating will cause the connection to move around. I am almost 100% sure since you have done the gauge mod that this is your issue. Make sure you heat up both surfaces so that you get a clean and strong solder joint.

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post #3 of 4 (permalink) Old 05-29-2012, 07:11 PM Thread Starter
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Thanks. I will tear it apart sometime this week and find out if that helps. Appreciate the response

05 600RR - Matte White
-Driven 520 -1/+2
-RK GXW Black Chain
-Leo Vince Carbon Fiber Slip-On
-ASV F3 Levers
-Driven D3 Grips
-Driven D-Axis Spools
-Driven V2 Bar Ends
-Speedo DRD
-Morimoto Mini H1 Bi-Xenon Projectors
-Amsoil Full Synthetic
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post #4 of 4 (permalink) Old 05-29-2012, 07:36 PM
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Definitely sounds like a loose connection. Those symptoms also occur on the cable driven tachs when one end, or both, aren't fully coupled.
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