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uuccio(at)gmail.com
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 Posted: Mon Jul 28, 2014 7:24 am Post subject: tachometer question |
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This is a non-aviation question but I hope relevant to this lists' interest.
The needle of my pickup truck's tachometer has started to vibrate
significantly more than it used to. Whereas it used to be only a few km/h,
now it goes from 50km/h to 60km/h and back incessantly with a period of
about 1 second. It seems excessive and I was wondering if it's the sign of
something wrong. Where would I start looking?
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deej(at)deej.net
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| Posted: Mon Jul 28, 2014 7:39 am Post subject: tachometer question |
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On 07/28/2014 11:22 AM, Sacha wrote:
| Quote: | Whereas it used to be only a few km/h,
now it goes from 50km/h to 60km/h and back incessantly with a period of
about 1 second. It seems excessive and I was wondering if it's the sign of
something wrong. Where would I start looking?
|
My Audi's speedometer does something similar. My guess is that it is
either the servo motor that controls the needle (common in the TT), or
the speed sensor on the transmission.
Might be something similar with your tach.
-Dj
--
Dj Merrill - N1JOV - VP EAA Chapter 87
Sportsman 2+2 Builder #7118 N421DJ - http://deej.net/sportsman/
Glastar Flyer N866RH - http://deej.net/glastar/
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skywagon
Joined: 11 Feb 2006
Posts: 184
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| Posted: Mon Jul 28, 2014 8:21 am Post subject: tachometer question |
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Sacha,
Can't help without knowing if the tach is driven by cable or electronics.
If cable, then lubricating the cable would probably stop the tach needle
from whipping.
_________________________________________________________________________
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raymondj(at)frontiernet.n
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| Posted: Mon Jul 28, 2014 9:33 am Post subject: tachometer question |
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You're talking about 2 different things.
Tachometer-measures engine rpm
Thing that measures in Km/h - speedometer (drive train rpm)
Please clarify which system you're talking about.
Raymond Julian
Kettle River, MN
The things we admire in men, kindness and generosity, openness, honesty,
understanding and feeling are the concomitants of failure in our system.
And those traits we detest, sharpness, greed, acquisitiveness, meanness,
egotism and self-interest are the traits of success. And while men
admire the quality of the first they love the produce of the second.
-John Steinbeck, novelist, Nobel laureate (1902-1968)
On 07/28/2014 10:22 AM, Sacha wrote:
| Quote: |
This is a non-aviation question but I hope relevant to this lists' interest.
The needle of my pickup truck's tachometer has started to vibrate
significantly more than it used to. Whereas it used to be only a few km/h,
now it goes from 50km/h to 60km/h and back incessantly with a period of
about 1 second. It seems excessive and I was wondering if it's the sign of
something wrong. Where would I start looking?
|
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http://www.matronics.com/Navigator?AeroElectric-List |
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