chine walk

[NoBones]

I beg to differ with you guys.....
But when Mr. Moesly was in "My 20SF at Anclote"
His words to me and keep in mind, He
Invented, designed, and patented our boats.
THEY WERE DESIGNED TO BE RUN HARD AND FAST !!!!!!!!!!!!
Sooooooooo, with that thought, being I top out above 60mph
with my 20 SF. He knows what these boats will take...
And they will take it!!!!!!
And his lovely wife Jeanne also who raced these boats while
most of us were just wet behind our ears......
I do not recommend for the novas or weak at heart to
try to run these boats at that speed. You have to know your limits in what you can handle. I did not just jump in my boat and go balls to the walls without knowing what I and the boat could handle!!!!
End of story!


See ya, Ken

i dont think his boat was running too flat. when it ran flat and the bow was in the water, it ran great, just couldnt get any more than 52-53mph at the same rpm. thats motor down and no tab. trim the motor with no or little tab, and the boat instantly lifts and picks up 3mph, and a few seconds later starts to walk. if you tab the boat flat and trim the motor to rev, it cavitates. this particular boat probably needs a 30", but surely that cant be the end all? i should have enough motor to run 60 with the tabs buried, but i really want to be able to stretch it out if conditions permit.

[Fr. Frank]

is it possible that the nose actually is not high enough and the boat is running too flat thereby causing the chime walk ?

The chine walk may be exaggerated by a nose high position, but probably not by a stern high or flatter planing pitch, unless only one side of the center deadrise angle has some serious hook in it, like 1/16" to 1/8" per foot in the aftermost 5' of the hull.

As the hull speed increases, it tries to find the point of least resistance, and rises up out of the water until only the aftermost center of the hull is the primary planing surface. The problem with that is the transitions, and the fact that a pure V is inherently unstable. It wants to fall off to one side or the other and plane on the smaller flat surface on one side of the V, rather than the whole V. A VDH hull running flatter, or nose lower, will be more stable than one running nose high, because it will plane on more than just the center angle.

would overpowering the hull speed the process up and plane out sooner, or make it worse? im looking at a 25" 300hpdi.

[Michael Vezzosi]

mikeym, I'm over in Bluffton and would like to check out your operation. I'm over in Thunderbolt pretty often at Southeast Boatworks where the two-seater Champ Boat series hydro is kept. I'll be working with the promoter for the race on River Street Nov. 3rd and 4th. I could come to Sav. by SeaCraft, or if you really want to experience chine walking I'll bring a 15 Whaler w/jack plate and F60. Talk about violent! Thank God for kill switch lanyards. More important than the one in our Jersey Speed Skiff! Part II.