Replacing the Tach; Universal 5411 "Tiny Tach" - SailNet Community
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post #1 of 4 Old 09-12-2012 Thread Starter
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Replacing the Tach; Universal 5411 "Tiny Tach"

Does anyone have first hand experience with Tiny Tach for diesels..I have a 5411 2 cylinder diesel..the previous owner removed the original tach.

Apparently, the tach functions by sensing the diesel "pulses" through the fuel line.

If you have any knowledge or recommendations with a replacement..much appreciated.

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post #2 of 4 Old 09-17-2012
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Re: Replacing the Tach; Universal 5411 "Tiny Tach"

I was told my tach runs off the alternator on the two cyl Universal diesel. I have not investigated the system to prove that out, but I do know that there are electrical wires to the tach.
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post #3 of 4 Old 09-17-2012
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Re: Replacing the Tach; Universal 5411 "Tiny Tach"

I bought and installed the Tiny Tach on my Yanmar 2QM15 earlier this year. Works great. Installation was easy. It was inexpensive. It has a job timer and two service timers as well as displaying engine hours when the power is on and the engine isn't running. If it was a project it would make the cut for blj's new medium buck projects--more than a hundred bucks but not much more.
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post #4 of 4 Old 10-23-2012
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Re: Replacing the Tach; Universal 5411 "Tiny Tach"

I can also vouch for the greatness of tiny tach. Have had one as my only tach aboard Aeolus for several years now, and it is both reliable and accurate. More accurate than an alternator tach because it counts the actual pulses of the fuel lines. Doesn't matter how many cylinders you have, obviously, as each pulse is the same number of rotations of the crankshaft.

And not to be left out is the fact it is so darn cheap, compared to a traditional tach. Just no comparison in overall greatness! I have mine mounted in the cockpit using a teak winch pad as a base.

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