Performance changes for different engine sizes

[stefan_r]

So...seen this Cougar on fleabay and am intrigued.
http://cgi.ebay.com/ebaymotors/ws/e...akeTrack=true&ssPageName=VIP:watchlink:top:en

How does performance change as power increases in something like this??

Basic facts as I have them (from the advert & various internet sources):
http://www.glpower.com/spiritAmerica.html

LOA: 46'

LWL: dunno

Beam: 9'6"

Draft: dunno - but if you look at the last pic on ebay it gives an idea

Displacement: Original dry/no engine weight 5,000lb; that plus 18,500lb of kit THREE!!!! Cat800hp on Arnesons; plus 800 US gallons of fuel gives an all up wet weight of 30,000lb and got to 80+mph in 1998

What would performance be with, say (ALL DIESEL):

2x500hp -- 1,000hp

2x750hp -- 1,500hp

3x500hp -- 1,500hp but substantial(??) weight difference compared to 2x750hp....but cheaper???

Also assume that Arnesons is the only way to go with this sort of HP?


Just getting ready to "add to basket" and fire up my PayPal account...just wonder if he will deliver to a PO Box in Nigeria.

 

[grumpy_o_g]

You can get a 480HP diesel stern drive now!! http://boatdiesel.com/News/News.cfm?P=20090212_CumminsMercruiser.cfm&Y=2009

 

[stefan_r]

Yeah, look cool don't they!

Question though...how fast will the Cougar run with 2 (or 3) of them!!??

 

[stefan_r]

And I have just answered my own question....ish.

http://www.psychosnail.com/BoatSpeedCalculator.aspx