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Mack's "sweet spot"
Posted: Fri Oct 07, 2005 11:07 pm
by Rolf
Finally discovered Mack's speed sweet spot over and back to Catalina last week. It's 16.5 knots (19.8 mph)-- no ballast. At this speed everything clicks-- true plane, great gas economy (3700 rpm with my 90horse), safe, "comfortable" ride in most any condition save wind chop. Faster speeds are nice but a bit nerve racking (less reaction time). I will experiment with full ballast next time and post my conclusions.
Rolf
Posted: Sun Oct 09, 2005 2:26 pm
by Ben
19.8 mph! That's WOT and 6200 rpm for my 50hp Johnson.
3700 rpm sounds good for cruising.
Problem is I promised my wife that this Johnson would "last forever".
Posted: Sun Oct 09, 2005 4:25 pm
by Captain Steve
Ben, I got the same problem...my Nissan 50 just wont quit!
Posted: Sun Oct 09, 2005 5:21 pm
by ALX357
i think my wife would be laughing if i told her my johnson would last forever.
Posted: Sun Oct 09, 2005 5:43 pm
by Catigale
Posted: Sun Oct 09, 2005 5:53 pm
by Dimitri-2000X-Tampa
Wife problem huh.....Hmmm, so she wouldn't let you out of your promise even if you convinced her that your Johnson isn't big enough? And for that matter, that you used to think it was big enough in days gone by?

Posted: Sun Oct 09, 2005 6:06 pm
by ALX357
hey.... just working with the material i was given....
straight lines , that is....
Posted: Mon Oct 10, 2005 4:22 am
by Catigale
Blue Johnsons are faster!!
Posted: Mon Oct 10, 2005 6:21 am
by Catigale
Once you have got a Black Johnson, you never return to port.....
[rest of post deleted by Human Resources]
Posted: Mon Oct 10, 2005 7:36 am
by ALX357
while we're at it .... is there is something about that "sweet spot" that we should attend to ?

(re. these posts .... )