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Old 05-06-2013 | 11:04 PM
  #9  
785boats
 
Joined: Aug 2007
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From: Brisbane, AUSTRALIA
Default RE: Outer Limits Stepped Mono.

ORIGINAL: Got RPM

The CG depends more on step placement. All my stepped boats like the CG ahead of the front step by one to three cm depending on the hull and speed.



.
Thanks for that.
I'll throw some numbers at you to see if it makes any sense.
The hull is actually 800mm from transom to point. There is a 75mm overhang.at the rear. In the attached pics the transom is level with the rear hatch line.
The first photo is where I was running the battery which gave me a balance point where the black lines are on the side hatch lines. That is 32%
The second photo is where the pack needs to be to have the balance point 2cm in front of the step on the keel. That's the forward black line on the side hatch lines. That works out to be 37%.
I'll make a bigger fin, angle it & play with the balance point this weekend.
The stinger is level at the moment. Should it have negative angle on it like the straight/solid shaft setups I see in Europe? Or is that not necessary with the balance point being further forward?
Isn't it interesting learning about a new aspect in the hobby. Well, new to me that is.
Cheers.
Paul.
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