Cackler adjustments

John Robinson... I missed this the first time...

Hi Pete,
Very thoughtful post. I am just waiting for my epoxy and glass before I start building my Cackler. As I am analyzing the easiest way to lengthen to boat,


Why??? what's the advantage of lengthening the Cackler?
 
Tod, I'm still researching sources beyond those already cited in order to provide a substantiated reply as opposed to just my opinion. Nonetheless, I'm still of the belief that TRIM is a greater influence on porpoising than rocker on the hull under discussion.

I'll be fishing the Columbia for steelhead to day and hope to dig deeper tonight/Friday.

In the meantime, here's another thread to keep us busy for a while:
http://www.boatdesign.net/forums/showthread.php?t=2339
 
Pete, I'm not really concerned as to the relative importance fo different factors at this point. The fact is that the hulls porpoise. Moving a reasonible amount of weight forward does not help in my case, wedges do.

I was really looking for a response to the question:

If porpoising is the result of instability at speed, wouldn't a boat with a short planing surface be more instable?

Tod
 
Hi Andrew,

My buddy and I already built a Snow Goose (my friends boat), but I wanted a little bigger boat than the Cackler but not as big as a Snow Goose. I was thinking of splitting the difference between the Snow Goose and Cackler, I'd like a little larger cockpit area. So it's not an advantage per se, it's just what I want. Please let me know if you think I'm making a mistake that will ruin the handling or seaworthyness of the boat.

Thanks,

John
 
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Well... the expert is Mr. Clark, he built a big Cackler... and if you read his post, you'll note that he added some ballast.

Honestly, I'd just stay with the Cackler hull (with a 30 hp) and if you want a bigger Cackler, build the Snow Goose (with a 40 hp).

Whatever you build, it'll be awesome, have fun planning.

Andrew
 
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