To those who tried everything to get their speedo to work

[cromwell1234]

Well my speedometer crapped out a while ago, I tried everything : lube, cables, compressed air, gear drive and nothing worked so today I decided to take it apart. its a 1982 GS1100EZ, rather than to swap clusters with a high mileage one from ebay, i decided to buy a used gauge from a member "gs1100ez" (thanks), and replace the internals that may be worn. I took some pictures to show what the culprit was, A worn plastic gear near the speedo housing. This made the needle bounce from 40 to 80mph, and no digits would turn from within, because of the worn threads, when i took the gear out and manually spun the internal drive presto everthing worked and moved as it should, hope this helps some of you.

[posplayr]

Was it a pretty easy slip on to swap out the gear? How much force was required?

Thanks for the pics.

Pos

[cromwell1234]

That green gear is located in a housing were the cable enters the speedo, take four small screws out and the gear is within the housing and will slide right out, looking at its location, it is the first gear in the sequence and has a high spin velocity, making it easily worn, like mine ------

[TheCafeKid]

Nice write up Helpfull to those who want to retain their stock OD readings

[Dave8338]

Hope you didn't "accidentally" spin a digit or two the wrong way, while you were in there.

[cromwell1234]

Hope you didn't "accidentally" spin a digit or two the wrong way, while you were in there.

Dave, your a smart man!!

[cromwell1234]

This might be a long shot but if anyone has the above gear in a parts bin or something please let me know, I'd like to buy it and fix the old speedo as a back-up, --ya i know its a long shot....

[Craiger]

That's kind of what I was thinking of when I posted in your other thread....I just didn't know for sure. Thanks for the pics and little write-up.

[Larry D]

Do you think that little gear is "universal" amoung all our speedo's ?

[cromwell1234]

So, how FAST do you have to go to MELT your speedo gear?

- JC

Sometimes i get excited on the highway and drive a little faster than I should....against better judgment, that is, ...ah things melt....

[GS750]

So, how FAST do you have to go to MELT your speedo gear?

- JC

i dont think its melted, just worn.

It often amazes me when people complain about "things mechanical" which have failed or worn out. Things like wheel bearings, timing chains, etc etc etc.

The thing is that "things mechanical" are often moving at a great speed, and usually in a temperature far above that which i would like to work, so wear is an obvious side effect, and the other thing that is always a constant amazement is that people say things like "its only 10 years old" or something to that effect.

In this example, imagine the amount of times that speedo drive cog has turned in its life, even if it was only ridden 100 miles per week.


If my 1977 GS750B was ridden an average of 100 miles per week for its life then it would have 166400 miles on it, but it has alot more than that, and stuff is starting to wear out and need replacing.

I am not knowledgable as to the ratio's but if that cog had to turn say 50 times to make 1 mile register on the odometer then it would have turned at least 8.3 million turns.


Ooh sorry, I forgot the main reason I was replying.......... the part that looks like it is melted is just the instrument grease.

[rkubik]

Looks melted, not worn.

Was something else blocking it from turning? Given that it was bouncing between readings of 40 and 80, maybe something was blocking it at that speed.

How many miles did you have on the clock?