Alaska Outdoor Supersite: Alaska outdoor information
Site Map
Directory -- Businesses serving the Alaska outdoors industry
Areas -- Information about Alaska outdoor areas
Fishing -- Information about fishin in Alaska
Hunting -- Information about Alaska hunting
Magazine -- Articles and photos about the Alaska outdoors
Who is OAC?

Alaska Hunting Books


The Alaska
Boating Forum

[ Return to Contents | Post a Reply | Post a new message ]

Check manual for peak rpm
Posted by Paul H on Jul 27 2005
Most outboards are designed to able to reach a peak rpm of 5500-6000.  If you're only getting 3600, and not getting on plane, you are definately over propped, and as was mentioned, overloaded.

The real problem is, a 35 horse engine on a planing hull should at most be pushing a gross load of 1400#'s, ie boat, engine, fuel, gear and people.  I was running 3 adults in a 20' skiff fairly lightly loaded and a full tune honda 50 on flat water, and it had just about the right amount of power.

I know, you have no choice with the Kenai hp restriction, but the american power boat association recomends a loading of ideally 25# per hp to a max of 40# per hp for planing hulls.  Thus a gross load of 3000# would require a minimum of 75 horse.

Previous: 50/35 prop pitch? huntak39 Jul 27 2005
Next: prop nielsenwa Jul 27 2005

Message Thread:

Post a Reply

Posting to this forum is now disabled. Please visit our new forums

Alaska outdoors ~ home | Areas | Magazine | Directory | Alaska outdoors forums | Alaska boating
Alaska hunting | Alaska fishing | Alaska Outdoors Store | Site Map | About Us

� 1996 Outdoors America Communications