Thread: Tach Adjustment
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Old 11-25-2016, 05:52 AM   #4
psneeld
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City: Ft Pierce
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Quote:
Originally Posted by Lou_tribal View Post
First I would check the engine rpm with an optical tachometer to be sure of the "real" rpm. I have no doubt about your musical ear but 100 rpm by difference just by comparing the sound of the other engine looks highly hypothetical to me.
While I have tin ears, many synch their engines not by listening for RPM, but by the thrumming of harmonics caused by the drive train.

Many captains seem to be able to get it to 50 RPM or less, even closer.

I have the same tach issues, but as a single...they are upper and lower......I am comparing it to the photo tach only and wondering if there is something else to adjust the tach if maxed out or replace.
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