Rev Counter late 1996 251

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Rev Counter late 1996 251

Postby Tony the Skin » Fri Jun 27, 2014 12:01 pm

The rev counter needle has what I would call a resting point when not in use. Mine instead of resting on it is behind it. Can anyone shed some light on this issue?
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Re: Rev Counter late 1996 251

Postby Tony the Skin » Fri Aug 01, 2014 4:23 am




Help! Am I the first to have this problem?
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Re: Rev Counter late 1996 251

Postby DAVID THOMPSON » Fri Aug 01, 2014 12:24 pm

not really sure how they work but some one using a magnet in search of a missing screw
could cause problems as lots of meters use magnets to work there magic ..
dave
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Re: Rev Counter late 1996 251

Postby davegsm82 » Sat Aug 02, 2014 3:53 am

Is it the Plastic CEV clocks or the original round Metal (mechanical) ones?

Sometimes on the plastic ones the needle will swing right round the dial when you turn off the ignition, it's difficult to get it back round but one method I've found is to drill a small hole in the right hand side of the clocks, between the clear plastic window and the face of the dial, then poke a straightened out paper clip through the hole and swing it back around.

If it's the metal ones, then it's likely that the return spring is damaged or the little plastic peg has snapped off that stops it returning below zero. Sometimes an impact from the back can punch the whole mechanism up above the plastic peg too.

Dave.
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Re: Rev Counter late 1996 251

Postby Tony the Skin » Sun Aug 03, 2014 4:23 am

davegsm82 wrote:Is it the Plastic CEV clocks or the original round Metal (mechanical) ones?

Sometimes on the plastic ones the needle will swing right round the dial when you turn off the ignition, it's difficult to get it back round but one method I've found is to drill a small hole in the right hand side of the clocks, between the clear plastic window and the face of the dial, then poke a straightened out paper clip through the hole and swing it back around.

If it's the metal ones, then it's likely that the return spring is damaged or the little plastic peg has snapped off that stops it returning below zero. Sometimes an impact from the back can punch the whole mechanism up above the plastic peg too.

Dave.



T
Thanks for that. It is the plastic electric clock model. It did this whilst I was riding it. I had hoped it might sort itself out but it hasn't :( :(
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Re: Rev Counter late 1996 251

Postby davegsm82 » Sun Aug 03, 2014 5:18 pm

It won't sort itself out, I tried switching the ignition on and off for about 10 mins once trying to re-create whatever glitch sent it round there in the first place.

Honestly, it's not all that hard to fix, 2-3mm hole in the side of the plastic case, go slowly so the swarf flies out the back, not into the clocks. paper clip, straightened out with a loop at one end (for grip) and a tiny 90-degree bend at the other. Just poke it through the hole and hook underneath the pointer, flick it back round and it should go back to where it belongs.

There's no return spring on these clocks, from what I remember, it just relies on the magnetic attraction in the motor mechanism, which is why it sometimes does this.

Dave.
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Re: Rev Counter late 1996 251

Postby Tony the Skin » Tue Aug 05, 2014 2:33 am

davegsm82 wrote:It won't sort itself out, I tried switching the ignition on and off for about 10 mins once trying to re-create whatever glitch sent it round there in the first place.

Honestly, it's not all that hard to fix, 2-3mm hole in the side of the plastic case, go slowly so the swarf flies out the back, not into the clocks. paper clip, straightened out with a loop at one end (for grip) and a tiny 90-degree bend at the other. Just poke it through the hole and hook underneath the pointer, flick it back round and it should go back to where it belongs.

There's no return spring on these clocks, from what I remember, it just relies on the magnetic attraction in the motor mechanism, which is why it sometimes does this.

Dave.




Thanks for that Dave.
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Posts: 45
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Location: Bury, Lancashire. UK.


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