[Public-list] ELECTRIC DRIVE

[Mike Lehman]

With an Atomic 4 in an Alberg 30 the cruising RPM is around 1400 RPM. If you 
look at the power curve for the engine that is equivilant to approx. 10~11 
HP.



              Mike Lehman
><((((º>¸.·´¯`·...¸><((((º>





----Original Message Follows----
From: "Michael" <dickdurk at intercom.net>
Reply-To: Alberg 30 Public List -- open to all <public-list at alberg30.org>
To: "Alberg 30 Public List -- open to all" <public-list at alberg30.org>
Subject: Re: [Public-list] ELECTRIC DRIVE
Date: Tue, 14 Sep 2004 11:43:31 -0400

 >I will guess the A30 needs about 15 of it's 30 hp to go 4 >knots

At any speed less than hull speed (5 1/4 knots by my calculations) the A30
needs way less than 15 hp. My 15 hp diesel drives the boat at 7+
knots-although there is a gas/diesel, brake hp./shaft hp., apple/ orange.
inability to make direct engine comparisons; not least of which electric
motors develop max hp. just before stall, internal combustion engines have
max hp. at max RPM.

Michael Grosh
#220


_______________________________________________
Public-list mailing list
Public-list at alberg30.org
http://alberg30.org/mailman/listinfo/public-list



 1095176814.0