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09-04-2021, 08:35 PM | #1 |
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Join Date: Jun 2010
Posts: 361
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Erratic speedo up to about 30mph
Speedo on my 46 is pretty erratic up to about 30-40mph. The cable gos through a gear changer for my Columbia then to my speedo. Any suggestions why I cant get steady reading while driving?thanks
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09-04-2021, 10:05 PM | #2 |
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Join Date: Jan 2011
Location: sw minnesota
Posts: 4,584
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Re: Erratic speedo up to about 30mph
Either the cable is dry, needs grease, or its not routed correctly, needs smoother less kinky corners
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09-04-2021, 10:32 PM | #3 |
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Join Date: Jun 2010
Posts: 361
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Re: Erratic speedo up to about 30mph
Thanks,will lube tomorrow
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09-05-2021, 11:31 AM | #4 |
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Join Date: Sep 2014
Location: Wiscasset, Maine
Posts: 2,004
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Re: Erratic speedo up to about 30mph
Disassemble the Columbia supplied Stewart Warner speedometer "transmission" while you're at it.
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09-06-2021, 09:47 PM | #5 |
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Join Date: May 2010
Location: Colorado
Posts: 553
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Re: Erratic speedo up to about 30mph
cas3, what do you lubricate the cable with?
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09-06-2021, 10:21 PM | #6 |
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Join Date: Jan 2011
Location: sw minnesota
Posts: 4,584
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Re: Erratic speedo up to about 30mph
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09-07-2021, 04:50 AM | #7 |
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Join Date: May 2010
Location: Solihull, England.
Posts: 8,760
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Re: Erratic speedo up to about 30mph
I oiled a speedo cable once, and it did not help. I then greased it and it did help. I think the grease acts as a damper of sorts and damps down the fast/slow action.
The fast/slow action is normally generated at a kink in the cable so check the routing. Also check it is not close to the exhaust at any point. Mart. |
09-07-2021, 01:04 PM | #8 |
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Join Date: May 2010
Location: Columbia, SC
Posts: 1,579
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Re: Erratic speedo up to about 30mph
Just a tip. When you disconnect the cable from the speedometer, immediately cover the end with a plastic baggy or some such. Those things tend to have a mind of their own and can leave skid marks on your kick panel and/or upholstery when you're pulling them out. No need to ask how I know.
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