I have a decibel app on my phone. A decibel meter is only going to give you noise reading which will be in loud range.
I'm not sure how it will tell you which portion of your drive is the culprit.
I'm fairly confident in saying it's probably the HZ frequency that you find the most objectionable. There is another app you can download
to measure frequency. That may be a beter tool to determine where in the rpm range it is the most annoying for you.
Bob
--------------------------------------------
On Mon, 1/30/17, 63urban 63urban@gmail.com [electricboats] <electricboats@yahoogroups.com> wrote:
Subject: Re: [Electric Boats] Re: Decibels
To: electricboats@yahoogroups.com
Date: Monday, January 30, 2017, 5:23 AM
Decibal meters are not that expensive and
phone apps are free. I would love to hear some numbers as
well. I am still in the planning stages so knowing this
component would be very helpful.
ThanksNick
Sent from my Bell Samsung device over
Canada's largest network.
-------- Original message --------
From: "moriartybob@yahoo.com
[electricboats]" <electricboats@yahoogroups.com>
Date: 2017-01-29 8:41 PM (GMT-05:00)
To: electricboats@yahoogroups.com
Subject: [Electric Boats] Re: Decibels
Thanks
everyone for your replies and theories. Has anyone taken any
measurements? My most recent subjective observations put my
3:1 planetary gear reduction unit (which includes the thrust
bearing) as a substantial noise source. It's hard to
objectively pinpoint the noisiest culprit - be it the motor,
the 3:1 reduction unit, or the stuffing box. Just looking
for some data. :-)
Maybe I should look at
some sort of lead collar around the 3:1 unit.
--Bob M
Posted by: bob jennings <sabre281@yahoo.com>
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