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Old 08-24-2014, 08:17 PM   #1
SirWompus OP
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Just finished slipping gear odometer fix and speedomoter is off

My odometer quit a while back and today I used these helpful instructions to fix it. Unfortunately these instructions tell you to take the needle off before telling you to mark where it was. Of course I should have read all the steps before going on but I can't change that now.So I took a quick ride using a GPS speedometer for reference and noticed that the indicated speed is about 10 mph above the GPS.

Would you:

a. Leave it alone, let the higher indicated speed keep me from speeding
b. Take it back apart and re-index the needle one notch counter clockwise
c. Use some other method ??? to re-calibrate

If you can't tell, I am leaning towards not taking it back apart. Prying that needle off was a pain.



A bit off topic but I could tell a PO went through the fix already by the pry marks around the bezel and a blob of some sort of grey hard glue on the slipping grey gear. At 23k indicated miles isn't that a bit strange for it to have to come apart twice? Of course the previous fix may not have lasted long due to the glue that was used.

Thanks,
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Old 08-24-2014, 08:41 PM   #2
Wirespokes
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It is extra trouble when a bezel is involved. Is this a GS, G/S R65 or ST? Helps when that's listed in the posting somewhere, not that it matters in this case.

I've had to repair a few that had been JB Welded - the 'fix' doesn't always hold.

And, no, it's not weird it's been fixed before - they've sometimes quit at six or seven thousand miles. It's my opinion the odometer issue is the most common airhead fault. Kind of an Alzheimer issue. :-)

Concerning getting it calibrated - I don't have an easy answer for you. It's a concern especially considering the bezels can be re-crimped only so many times. If left as-is, at least you know it's reading about the same as new.
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Old 08-24-2014, 08:58 PM   #3
SirWompus OP
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Ops. R65.

I'll probably make one attempt at fixing it. Any idea if ~10mph = X notches on the needle's spline? I'm going to try two unless someone says otherwise.
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Old 08-25-2014, 03:41 AM   #4
navrat
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Quote:
Originally Posted by SirWompus View Post
a blob of some sort of grey hard glue on the slipping grey gear.
I had to rebuild the speedo on my '89 R100GS because the odometer was beginning to fail. Rather than trying the glue fix for that pesky slipping pot metal gear, I replaced it with a delrin plastic gear that I got from here: http://s144451996.onlinehome.us/ Seems to be working fine so far.

navrat screwed with this post 08-26-2014 at 02:28 AM
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Old 08-26-2014, 12:42 AM   #5
Wirespokes
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Quote:
Originally Posted by SirWompus View Post
Ops. R65.

I'll probably make one attempt at fixing it. Any idea if ~10mph = X notches on the needle's spline? I'm going to try two unless someone says otherwise.
I'd think one notch would be more than enough. Might even read low.

navrat - that's interesting data - not that I'd ever need to replace one of those pot metal gears. But I think he misspelled Delrin adding the second d.
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Old 08-26-2014, 02:49 AM   #6
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Originally Posted by Wirespokes View Post
navrat - that's interesting data - not that I'd ever need to replace one of those pot metal gears. But I think he misspelled Delrin adding the second d.
I figured it was worth a try. I contemplated the glue fix, but figured I'd just get glue over everything and ruin the assembly.
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Old 08-26-2014, 10:57 PM   #7
Wirespokes
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The main problem with the JBWeld solution is the epoxy can end up slipping along with the gear. The shaft is slippery and epoxy doesn't bond all that well to it.
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Old 08-26-2014, 11:15 PM   #8
Other Bob
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Quote:
Originally Posted by SirWompus View Post
Ops. R65. I'll probably make one attempt at fixing it. ***
Unless I'm mistaken (it happens!), the R65 speedo is in a pod/housing that can be dissembled from the back and the speedo assembly removed from that side without disturbing the lens/bezel.

Of course, dissassembly risks damage to embrittled plastic shell components and the dash light circuit "sheet" (not exactly a "board" so not sure what else to call it). You may do more harm than good.

Or, you could hit the EASY BUTTON and just sent it to Wirespokes (ad in his sig line) .. he does nice work on these things!

Bob
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Old 08-27-2014, 02:03 AM   #9
Bill Harris
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Quote:
Originally Posted by Wirespokes View Post
The main problem with the JBWeld solution is the epoxy can end up slipping along with the gear. The shaft is slippery and epoxy doesn't bond all that well to it.
Years ago I used ot repair BMW car Odos that slipped by very throughly degreasing the shaft and pot-metal gear and carefully wicking a small drop of CA (cyanoacrylate) glue into the joint. Operative words: "carefully" and "small" . Crazy Glue is useful, but can be deadly...

Been meaning to mention-- these are very useful applicators:

http://www.microbrush.com/oem/micro-applicators.asp

http://www.microbrush.com/hobby/prod...rush/index.asp



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Old 08-28-2014, 12:42 AM   #10
Wirespokes
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Quote:
Originally Posted by Other Bob View Post
Unless I'm mistaken (it happens!), the R65 speedo is in a pod/housing that can be dissembled from the back
Nope, not that easy. The bezel, unfortunately must come off to work on the gauge.

Bill - superglue - wouldn't have thought of that.
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