Engine tacho calibration
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Engine tacho calibration
Anyone know where I can get the calibration checked on a mechanical engine tacho instrument?
Thanks
Tony Nowak
Thanks
Tony Nowak
Tony Nowak
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Re: Engine tacho calibration
Tony
One possible solution is to remove the Tacho and drive it with a lathe of known rotational speed.
Or borrow a stroboscope from the micro light people down the way and try it in situ. That's what we did after doing a check calibration of their strobe using a a calibrated one we borrowed from elsewhere. The agreed to within 5rpm
Colin
One possible solution is to remove the Tacho and drive it with a lathe of known rotational speed.
Or borrow a stroboscope from the micro light people down the way and try it in situ. That's what we did after doing a check calibration of their strobe using a a calibrated one we borrowed from elsewhere. The agreed to within 5rpm
Colin
Colin Rule
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Re: Engine tacho calibration
Hi Tony, I have used a model aircraft optical tacho on our Vagabond to check the tacho. Our engines are right at the bottom of the scale, so not perfect. They do give a sanity check for little outlay. Can be used in flight as well.
Ian Melville
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Re: Engine tacho calibration
Thanks all. I have an optical checker but it only gives a resolution of 100 RPM (I think).
I have found a company, Speedycables, that says they can do a bench test/calibration. They also seem to do everything associated with cable driven instruments.
http://www.speedycables.com
Tony
I have found a company, Speedycables, that says they can do a bench test/calibration. They also seem to do everything associated with cable driven instruments.
http://www.speedycables.com
Tony
Tony Nowak
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Re: Engine tacho calibration
Mines the same, that's why I said for a sanity Check.
Ian Melville
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Re: Engine tacho calibration
Frank
I found loads of Android apps when typing in tachometer, many are not tachos in the sense that they measure rpm, and those that seem to are accoustic. Which one do you use.
John
I found loads of Android apps when typing in tachometer, many are not tachos in the sense that they measure rpm, and those that seem to are accoustic. Which one do you use.
John
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Re: Engine tacho calibration
The one I have currently is just identified by the icon as RPM Gauge, but on the PlayStore it is called Accoustic Tachometer (RPM) and written by Javier Yanez. You can set it for four cylinders and 4 stroke cycle. Resolution is claimed at 40 rpm. In my AA5 with the original 1972 tacho the two agree remarkably well, to my amazement as most seem to read low at that age.
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