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Bouncy speedo 01 Sep 2016 08:47 #740777

  • MDZ1rider
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I can only speak on the earlier models, but the speedo has a liquid filled coupling inside. A bouncing needle is a symptom that it is losing fluid. Unfortunately the coupling can not be refilled. Replacement is the only option and the coupling it is not sold as a separate item . Contact Bob at Z-resto[www.zresto.com/]. He'll know what your options are.
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Bouncy speedo 01 Sep 2016 09:37 #740780

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Ahh, there's the info I was looking for, thank you. So it's likely not repairable, well easy to fix without new parts, parts that are not listed for sale. Guessing the fluid coupling is the same for different models so it's possible to use one out of another speedo I bet.
"83 KZ1100 Spectre, '81 Yamaha XV750 Cafe, '74 Kawasaki H2B 750

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Bouncy speedo 01 Sep 2016 13:12 #740796

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There is no fluid in the Z1/KZ tach or speedo.
Steve

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Bouncy speedo 02 Sep 2016 08:47 #740906

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Well then I guess the guy who's restored hundreds of Z1 speedo's and tachs as a business doesn't know what he's talking about either. See the section on the oil filled damper at the bottom of this link.
www.zresto.com/page2.php

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Last edit: by MDZ1rider.

Bouncy speedo 02 Sep 2016 15:43 #740943

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None of any KZ 1000 instruments I have, or have opened up, have that fat oil filled chamber.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado

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Bouncy speedo 02 Sep 2016 18:58 #740957

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MDZ1rider wrote: I can only speak on the earlier models, but the speedo has a liquid filled coupling inside. A bouncing needle is a symptom that it is losing fluid. Unfortunately the coupling can not be refilled. Replacement is the only option and the coupling it is not sold as a separate item . Contact Bob at Z-resto[www.zresto.com/]. He'll know what your options are.


Actually, the fluid can be replaced. Here's the speedometer / tachometer place that does it:

www.z-clocks.co.uk

Ed
1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)

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Last edit: by 650ed.

Bouncy speedo 03 Sep 2016 06:10 #740973

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Well lets see. I have two junk dampeners. One tach and one speedo at home. I'll compare and cut them open this afternoon when I get there. The reason I said they're solid is the shafts don't turn but I'd like to put this to bed either way. I'll make a clip of it.
Steve

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Bouncy speedo 03 Sep 2016 09:13 #740982

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You have to break off the two frame tabs holding the axle shaft of the OD drum. Doesn't look like any good way to fix the frame after doing that.
Mine look smaller in diameter and solid, plus not large enough to hold any dampening liquid.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado

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Last edit: by missionkz.

Bouncy speedo 03 Sep 2016 09:22 #740984

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I'm sure they're solid. I bent the tabs enough to get them apart then bent them back. Used a punch to tighten them.
Steve

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Bouncy speedo 05 Sep 2016 19:13 #741243

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Got to the gauge innards. No oil in the drum.
Steve

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Bouncy speedo 05 Sep 2016 23:23 #741249

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hmmmm, I think If that tube, which you snipped in half, was filled with a fluid, I think it would act as some kind of inertial damper.
Bruce
1977 KZ1000A1
2016 Triumph T120 Bonneville
Far North East Metro Denver Colorado

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Bouncy speedo 06 Sep 2016 08:11 #741273

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No oil or even a trace of it anywhere.
Steve

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