[C320-list] Tachometer

[amshd2 at aol.com]

Barry

I have a 94 Perkins with a 3 blade fixed prop.? I run her at 2800 rpm's all day long and she runs great?I can get a max of about 3200 -3300.?? Also at ideal she?vibrates a lot, I just bump her up a little until it stops.??

I belive perkins manual says that 3300 rpm is the max.?

I agree I would use another tac to check your rpms sounds like?yours could be off.?

Tony 


-----Original Message-----
From: catalina at thehares.com
To: C320-List at Catalina320.com
Sent: Tue, 29 Jul 2008 2:23 pm
Subject: Re: [C320-list] Tachometer



Hi Barry,

  With hull 126, I assume you don't have a yanmar engine.  Are you sure
you should be getting higher RPM wide open in neutral?  I thought only
the yanmar spun over 3000.   2500-2800 sounds about right for "more
experienced" westerbeke, perkins and universal diesels.

But of course I don't know for sure here.

-Jeff

> There was a thread a while back about using a hobby Tachometer to check
> the
> on board instrument.  Does anyone have the make and model of that device.
> I believe my instrument panel may be off as I am only able to rev up to
> 2800
> RPM in Neutral
> and 2450 or so in gear with a 3 blade flex o fold prop.  The boat seems to
> make hull speed and I get no black smoke.  I have just over 700 hours on
> the
> 1994 Perkins.
> Thanks for the help.
> BARRY --... ...--
> TRANSIT C-320  #126
> GLEN COVE, NY
>
>
>