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'79 GS 850 Speedometer Problems

  • Thread starter Thread starter Brandon
  • Start date Start date
B

Brandon

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I bought a '79 GS 850 about 3 years ago and really enjoy riding it. The id marks show that it was manufactured 11/78...not sure if it is a "L" model or not...as the Clymer owner's manuel talks about.
Anyway, for some time I've noticed that there was a slight whining noise in the speedometer, well recently that whining noise became a rumbling, vibrating noise and I noticed that the speedometer started registering much higher speeds than were actually being driven. I parked it that night and drove it to work (20miles one way) on the way home the needle started bouncing all over the place.
Well, I took the speedometer cable apart and it seems to be in good condition. I figured I'd need a new speedometer and decided to dismantle the speedometer and see if there was something obviously wrong. I didn't see anything broken...I put a drill on it and ran it...still nothing! I did notice that there were some shavings on the magnet though. I put it all back together and drove it to work again, still making a lot of noise, well the needle broke and then the rest of it popped out of it's place and fell to the bottom.
I called a local dealership, the guy told me they don't work on bikes older than 7 years...too many problems getting parts, etc.
He also told me that it may be a problem in the gears down on the front wheel where the speedometer cable goes into the housing.
Not sure what to do...need help!
Nice bike
 
My speedo is sluggish......

My speedo is sluggish......

Im not sure if I need service or a new speedo. Mine is a bit slugish. I bet yours needs replacing though. Im not sure who services them. If you want to keep it maybe some of the other guys on the site know who serivices/restores them.
 
Niosy Speedo

Niosy Speedo

Let me know if you get yours fixed. I have the same problem with a 1981 GS750,
 
The three things that come to mind considering yours is broken are,

#1 find a used one

#2 find a good one on e-bay

# ride bike and see if this fixes it

I'm not trying to be sarcastic but you have all the resources you need at
your disposal HERE why take it to a repair facility when you don't have to!
it sounds to me like it was the speedo that was bad or possibly the cable
and or drive that may have been causing the speedo to go but it is bad now(they do wear out) replace it and see... just my .02.
 
Metal shavings?? ONLY option Get a used speedo If you want to do some custom work you could adapt a later instrument cluster
 
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