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Thread: Dutchman tunnel hull
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03-01-2016, 12:59 PM #106
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Mark75H thanked for this postGENE LANHAM liked this post
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03-01-2016, 02:17 PM #1077000 RPM
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Seemed perfectly reasonable at the time.
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Mark75H liked this post
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03-01-2016, 05:33 PM #108
so was this thread about the gold coast marathon????
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03-02-2016, 10:53 AM #1097000 RPM
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The Dutchman tunnel boats, like almost all of the race boats of that era were Schoonover's best guess. They were not wind tunnel tested or designed by aerodynamic experts. The builder/designers of the day built what they thought looked right. If someone offered me a drive in a twin Dutchman back then I would have done it in a minute. That being said those boats had bad habits. Like most of the tunnel boats of that period they were pretty easy to blow over but the Dutchman also suffered from what some called the "Dutchman stumble". Sometimes, usually running downwind, the boat would suddenly lose lift and try to stuff the bow. I never saw one stuff it all the way in, but it was a handful to keep it running straight when it happened. These boats also were not competitive with a single engine as I recall.
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03-02-2016, 10:54 AM #1105000 RPM
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Thanks for the info. Dad was driving it because Wally was away...maybe at school? He was with Wally's father. I think it was the first time the boat was wet. He felt okay for awhile, then became nauseous. Bruised spleen or something like that.
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03-02-2016, 10:59 AM #111Member
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Go to page one, post #13
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03-02-2016, 11:48 AM #1127000 RPM
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Thanks Chic. I had forgotten the single engine Fantom.
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03-02-2016, 02:57 PM #113
That "stumble" also was present in the aluminum version of the design built by Bill Petty as "Pettycraft" . This resulted in a fatality at a race I attended in Lorain, Ohio back in 67 or 68, in which a brand new, dual, Petty hull pitch-poled and wound up re-entering upside down and back wards (the worst flip scenario of all) killing the driver.
I also was racing against Chet Strickland in the 1968 Milwaukee-Chicago-Milwaukee Marathon when he submarined an identical Pettycraft into a big wake. It was not surprizing that the boat stuffed, but it never even lifted as the wake moved under it. I flew over the top of the wake in my twin Evinrude/X115 Eltro, looked down at Chet, and after he waved that he was okay... I continued on to Chicago...and back.
Bottom Line.....I would find another hull to put twins on IMHO.Last edited by T2x; 03-02-2016 at 03:01 PM.
20 Foot Switzer Wing 2 X S3000 (Dust'n the Wind II)
!6 foot Wood Eltro Vee (2X Merc 1500's) (Dust'n the Wind IV)
15 foot Powercat 15C (2 X Merc 1500) (Dust'n the Wind III)
(Single engine boats are lacking something)
15’ Wooden Switzer Shooting Star...
16 foot Lee Craft Merc S 3000-(Gold Dust II)
(The exception proves the rule)
Obsolete and Proud of it
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05-02-2016, 07:37 PM #114
My Dutchman project is now for sale in the hulls up to 20' forum.
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07-18-2016, 04:41 PM #115The Historic Photo Master
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...Checking again, for any info on this particular pickle-fork Dutchman...thanx...
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07-18-2016, 04:42 PM #116The Historic Photo Master
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Mark75H liked this post
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07-19-2016, 10:54 AM #1177000 RPM
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1350s with fleetmaster lower units on a 17 Dutchman, Virginia tag on the trailer. Never saw that one down here. Can't think what class it would have been run in. Must have been somebody's pleasure ride.
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07-19-2016, 11:07 AM #118
Looks like an electrical tape number job, 62, and a 71 Virginia tag
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07-19-2016, 01:32 PM #1197000 RPM
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Tunnel boat would be legal for SJJ but I don't recall seeing that class being run anywhere by then. It sure wouldn't be competitive in UU.
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07-19-2016, 01:33 PM #120
Anyone notice that one engine has trim, the other doesnt???