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Old 24-02-11, 07:05 PM   #1
ryansv
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Default Speedo reading erratically.

Evening, got of work early so the bike for little spin. Doing a bout 55/60 looked down and speedo was going from the speed i was going back down to zero quickly over and over. pulled over turned off and on again worked fine on way back any1 ideass? i gotta 99 curvy

Last edited by ryansv; 24-02-11 at 07:16 PM.
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Old 24-02-11, 07:41 PM   #2
Weirdfish
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Default Re: Strange speedo

Excuse my ignorance but I have a pointy SV with a digital speedo, am I right in thinking yours is an analogue, i.e. cable driven clock? If so I reckon the cable or speedo drive may be on the way out as a similar thing happened on my old CX and this was the problem, one min it's fine the next it's dropping to zero then flying up to 100 then OK again. Easy fix though
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Old 24-02-11, 07:48 PM   #3
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Default Re: Strange speedo

yes its an analogue one. will have to give it a run the weekend see if it happens again, will take your points into consideration cheeers
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Old 24-02-11, 07:56 PM   #4
Weirdfish
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Default Re: Strange speedo

No probs, reckon something down there is worn, probably the drive.
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Old 24-02-11, 08:18 PM   #5
andrewsmith
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Default Re: Strange speedo

First port of call will be a loose/ crapped up connection
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Old 24-02-11, 08:23 PM   #6
Rob969
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Default Re: Strange speedo

Mine did something similar before the speedo rotor gave up completly. If you have a search theres been plenty of threads about rotors breaking
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Old 24-02-11, 09:23 PM   #7
daveyrach
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Default Re: Strange speedo

They have electronic speedo, although they appear analogue the drive is electronic and a wire rather than a cable. I'd clean up the drive and check connections
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Old 24-02-11, 11:14 PM   #8
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Default Re: Strange speedo

Quote:
Originally Posted by Rob969 View Post
Mine did something similar before the speedo rotor gave up completly. If you have a search theres been plenty of threads about rotors breaking
Mine did the exact same thing i was doing 0-90 over an over at frighten acc ha ha.
from what i found out it tends to be the drive at the front wheel mine was smashed to pieces when i checked it.
when you ring the dealer for a price they will quote you £120 odd as the stupid idiots cant seem to read a parts diagram its actually £21.31 well it was i cant remember if i got mine before vat rise.

cheers
Ben
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Old 25-02-11, 09:29 AM   #9
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Default Re: Speedo reading erratically.

Was it just the speedo or did the rev counter do it at the same time?
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Old 25-02-11, 11:44 AM   #10
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Default Re: Strange speedo

Quote:
Originally Posted by loonytoon View Post
from what i found out it tends to be the drive at the front wheel mine was smashed to pieces when i checked it.
when you ring the dealer for a price they will quote you £120 odd as the stupid idiots cant seem to read a parts diagram its actually £21.31 well it was i cant remember if i got mine before vat rise.

cheers
Ben
yup that, i once did 70mph in near stand still trafic on the m5 when mine went
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