Quote:
Originally Posted by McGillicuddy
As I recall, Bushwacker's colleague, Bob - was not as fond of the splash rails idea. I have toyed with the thought of continuing the flair on my 21 and this really validates my thought process.
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Very interesting post Terry! Do you know if Big Fluke ever got more info on the 23? It is most definitely NOT a streched 21! The step heights are less on the 23 and there appears to be more deadrise in the outer panels, so Potter apparently did not follow Moesly's design principles when he designed the 23. More deadrise in the outer panels should help the ride, while raising min planing speed and hurting load carrying ability, but the relationship between panels is also different and I'm sure that's very important too. The 21 would plane at about 12 mph with an I/O, and I've never heard of a 23 being able to plane that slow. Big Fluke's impression of the difference in ride between the 21 and 23 are consistent with my experience as well as my friend Bob who owned the Moesly 21 "Unohu". I suspect Bryan/3rd Day has ridden in both the 23 and 21 more recently, so would be interesting to get his comments as well. I understand Potter gave Mr. Moesly a ride in the 23 as soon as they returned from their first circumnavigation trip; Carl, being too much of a gentleman to tell him what he really thought, supposedly just said "Well, there are a few things I would have done differently"!
Gilley, Bob absolutely loved the ride of the 21' Unohu; he's pretty stubborn, and was of the mind set "if it ain't broke, don't fix it"! I wasn't surprised that he wouldn't consider spray rails, as he ran it for over 10 years without trim tabs! He finally changed his mind and added them after following me into Lucaya years ago into a particularly nasty 3' chop. He passed me as I was only running about 15 kts, but I think I was more comfortable than he was at 20 kts! For what it's worth, I think Skip is planning to add spray rails to his 21, and I'm sure he can give you some good design info on them.
Carl once told me, in response to a question about differences between the 21 and later hulls, that he intentionally designed the 21 with very little dynamic lift, "because you're not making much forward progress where there is a lot of vertical motion"! That may explain the lack of flair and the "spray deflector" conventional strakes he added to the 25 and 27' hulls, and the flat at the forward chines on the 20's. I'm sure that staying dry was not a big priority on the race boats! Denny