How much dashpot fluid is needed? - Steve Saunders Goldwing Forums

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post #1 of 24 (permalink) Old 12-18-2017, 12:47 PM Thread Starter
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How much dashpot fluid is needed?

Does any one know how much dashpot fluid (50,000CST silicone fluid) is required in the tachometer?

And How does one put the fluid in the tach? Where does it go?

I have the tach apart.
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post #2 of 24 (permalink) Old 12-18-2017, 01:14 PM
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Drill a half-inch hole in the metal part, and pour in a quart of 10w40 regular oil, or 1 pint of 0w10 synthetic.

Good luck.
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post #3 of 24 (permalink) Old 12-18-2017, 01:14 PM
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Wut??!

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post #4 of 24 (permalink) Old 12-18-2017, 02:58 PM
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May as well check the air pressure in your speedometer while you are in there. Nitrogen fill if it's low.
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post #5 of 24 (permalink) Old 12-18-2017, 04:17 PM
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dashpot fluid

Dashpot fluid is used in some older carbs. Not in the carb per se, but in a little can or pot attached to the throttle plate shaft. I believe it was used to prevent throttle plate flutter. And he might be referring to fluid used to dampen the tach needle. Older tach and speedos used fluid as a means to prevent the needles from bouncing.


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post #6 of 24 (permalink) Old 12-18-2017, 05:29 PM Thread Starter
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rayjoe
That is exactly what I am looking for. I do not know how much to put in the tach.
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post #7 of 24 (permalink) Old 12-18-2017, 05:33 PM
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Quote:
Originally Posted by Wilcoy02 View Post
rayjoe
That is exactly what I am looking for. I do not know how much to put in the tach.
Are you sure that the tachometer uses damping fluid as it should read real time?
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post #8 of 24 (permalink) Old 12-18-2017, 05:42 PM
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Put some penetrating oil, or even WD-40 in the cable hole and spin it a few dozen times, then some decent quality grease. Replace the cable. If that doesn't fix the problem, start looking for another gauge.

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post #9 of 24 (permalink) Old 12-18-2017, 05:52 PM
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fluid

Quote:
Originally Posted by Wilcoy02 View Post
rayjoe
That is exactly what I am looking for. I do not know how much to put in the tach.
I can't help you there. The only reason I knew what you were talking about is old age. I had a couple of English sports cars and a few Triumph motorcycles in my youth. I'm no expert, but I remember those old gauges.


I would be surprised if the newer gauges use fluid. Most of the newer ones I've seen have what looks to be a clock spring. You might google Smiths gauges repair or something like that.

In the long run it might be easier to just replace the tach guts.




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post #10 of 24 (permalink) Old 12-18-2017, 05:58 PM
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Originally Posted by Bike...and Dennis View Post
Put some penetrating oil, or even WD-40 in the cable hole and spin it a few dozen times, then some decent quality grease. Replace the cable. If that doesn't fix the problem, start looking for another gauge.
The gauges that I've seen use fluid in a "can/pot" that is attached to the needle shaft. I not sure if you can get fluid into it thru the cable hole. Anything is worth a try.


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