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Dave Hall
 
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On Tue, 23 Nov 2004 18:09:33 GMT, Short Wave Sportfishing
wrote:

This morning, while burning some old gas in the Ranger, I took the
following sequence of pictures at various speeds.



Couple of comments:

Nice lake. Where is it?

How do you handle the boat single handed with no dock at the ramp?

I'm not used to seeing the tach so high and the speedo so low. At 5000
RPM, I'm touching 70 MPH, so if I saw that, I'd think my prop was
slipping or severely ventilating.....

Your boat was planing between 2000 and 3000 RPM judging from the shape
of the wake. My experience has shown me that the wake develops a white
frothy churn as it starts to rise up out of the water (about 2000 RPM
on my boat). The froth eventually retreats to a large "hump" almost
resembling a rooster tail just before fully on plane. As the wake
finally flattens, that is the point that you are officially
"on-plane". At that point your MPH will jump up sharply with a slight
rise in RPM (due to the load lessening).

I can slowly push my boat up to 3000 RPM and not be going more than 15
MPH initially. Once it goes "over the hump", the speed will quickly
rise to about 40 MPH, and the tach will jump to about 3400 RPM. When I
back it back to 3000, the speed will hold at 38 MPH. I can drop it
back to about 2300 RPM, and about 22 MPH with the tabs down before it
falls back off plane.

Dave