[NSRCA-discussion] YS170 at 96dB

[adriancwong at earthlink.net]

Don and I have been testing props on the last few weeks. As he mentioned, Coolpower 30% nitro on wood ProLine with APC 18.5x12 wpn shortened to 18x12 with reshaped prop tip.

Adrian

-----Original Message-----
>From: AtwoodDon at aol.com
>Sent: Aug 4, 2009 10:03 PM
>To: nsrca-discussion at lists.nsrca.org
>Subject: Re: [NSRCA-discussion] YS170 at 96dB
>
>We have been doing some testing here in Sacramento over the last couple 
>weeks.  Looks like 73-7400 on 30% is about the max to make 94db or slightly
>less.  Make sure the prop tips are clean, not chipped or dinged.  It  makes a
>difference.
>
>Don
>
>
>In a message dated 8/4/2009 6:58:34 P.M. Pacific Daylight Time,
>cchariandy at yahoo.ca writes:
>
>Does anybody know what rpm will pass a noise test for a YS170  turning
>18.1X11?
>
>Colin.
>
>
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