| We're talking in circles here !
[Re: Rolf_Nilsen]
#27080 01/07/04 10:06 AM 01/07/04 10:06 AM |
Joined: Jun 2001 Posts: 9,582 North-West Europe Wouter
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Posts: 9,582 North-West Europe | I was the one claiming the Tornado DOESN'T have a dolphinstriker.
It has a strut between the pole and bridle strop as seen on all Tornado's with the new rig.
Can anybody understand now how much confusion it causes by calling this element a Dolphinstriker or Pelicanstriker ?
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands
| | | Re: We're talking in circles here !
[Re: Mary]
#27082 01/07/04 12:04 PM 01/07/04 12:04 PM |
Joined: Oct 2003 Posts: 248 Colorado SteveT
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Posts: 248 Colorado | I don't know about hitting a dolphin, but during the H-20 Continentals in September, one of the boats straddled a massive sodden log, maybe two feet in diameter, floating just above the surface like a tropical ice burg and caught it with their dolphin striker. It bent the stainless rod parallel with the tramp. Ouch
H-20 #896
| | | Re: And also the explanation why it isn't needed ...
[Re: Rolf_Nilsen]
#27083 01/07/04 12:21 PM 01/07/04 12:21 PM |
Joined: Aug 2003 Posts: 284 S. Florida BRoberts
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Posts: 284 S. Florida | Hi Rolf, If the spinnaker pole is stalilized at a mid length point, the jib tack for example, then the effective length of the pole is half the actual pole length and a smaller and lighter weight tube can be used. If a strut tube is put in place between the jib tack at the spin pole and the intersection of the forestay bridle wires, two important options open up. One is that the forestay bridle wires can be made longer, a taller bridle, which reduces the toe-in loads on the hulls. Second the jib tack can be set at whatever height above the hull deck is desired. Longer luff sails produce more forward thrust and make the boat go faster. If a strut, vertically downward, is installed on the underside of the pole immediately under the vertical strut connecting the top of the pole to the forestay bridle, and this strut has a tension wire connecting the lower end of the strut to the ends of the pole, then it is possible to lower the outer/forward end of the spin pole which allows a longer luff spinnaker. Again longer luff sails produce more forward thrust and make the boat go faster. The arrangement I have tried to describe here is a lower spinnaker pole and the pole can be straight under load and longer luff jibs and spinnakers can be used. I have no idea why the Tornado class did what they did. That is their business. Bill | | | Re: We're talking in circles here !
[Re: Mary]
#27084 01/07/04 12:27 PM 01/07/04 12:27 PM |
Joined: Jul 2001 Posts: 1,200 Vancouver, BC Tornado
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Posts: 1,200 Vancouver, BC | Yes Mary!
I was swarmed by a pod of good sized dolphins a few years back on an old hobie 18. They are right along side us, zooming past and darting directly across the bows with only inches to spare. We were moving at about 8 kts. At one point, one of them seemed to enjoy matching our speed while swimming between the hulls just in front of the main beam. What a site! At some point, another one thump against us somewhere along the port hull. An amazing day!
I've also hit a seal on that same boat. We were in a good breeze, boat has moving 15 kts easy. My rookie crew was mumbling something while facing forwards...I could not make out the words over the sound of the wind. Moments later...THUMP! "What was that?!" I asked..."The SEAL!" came the reply...."Didn't you hear my warning you??"
Mike Dobbs Tornado CAN 99 "Full Tilt"
| | | Re: We're talking in circles here !
[Re: Wouter]
#27085 01/07/04 01:35 PM 01/07/04 01:35 PM |
Joined: May 2003 Posts: 4,451 West coast of Norway Rolf_Nilsen
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Posts: 4,451 West coast of Norway | Ahh, that piece of rigging is not about any kind of compression on the Tornado (I'm refering to the Tornado, altough the discussion is a bit broader..). The small cylinder going from the bridle intersection and down to the pole is to restrict the maximum luff length of the jib with downhaul applied in a measureable way. As per the Tornado class rules. Lowering the tip of the pole could be handy trough a dolphin striker, but hitting waves would be a consern. Also, most classes has a max luff length of spi's as well (The Tornado also has a rule about minimum height of tip above deck). I think the names dolphin striker and pelican striker are much more memorable than 'compression strut' | | | Re: We're talking in circles here !
[Re: Mary]
#27086 01/07/04 05:16 PM 01/07/04 05:16 PM |
Joined: Jul 2001 Posts: 851 US Western Continental Shelf hobiegary
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Posts: 851 US Western Continental Shelf | Mary, Dolphins get hit by dolphin strikers all the time. You might have seen some of the ones that have been hit; they have a hole on top of the highest portion of their body. GARY
Santa Monica Bay Mystere 6.0 "Whisk" <--- R.I.P. | | | Dolphin Striker
[Re: Mary]
#27088 01/07/04 10:09 PM 01/07/04 10:09 PM |
Joined: Jul 2001 Posts: 851 US Western Continental Shelf hobiegary
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Posts: 851 US Western Continental Shelf | When I sailed the Hobie 18 I always tried to find the pod of dolphin which had the highest number of the ones that had already been punched by a dolphin striker. Then my chances of hooking-up with one was the greatest.
Once the protruding end of that dolphin stiker would snag in the animal's scar-hole, the boat can really fly. The dolphin's tremendous power allows him to actually lift the boat some and this gets you right into planing mode where he can then scoot you along at tremendous speeds.
I miss the striker on that boat so much! The Mystere that I sail on now, has a flat bottomed striker so I have to actually hook onto their fold between their beak and skull with the trailing edge of the striker's bar. Much more difficult to engage this hook-up and also more difficult to maintain it for any good distance.
Those days of riding the "seahorses" are sorely missed!
GARY
Santa Monica Bay Mystere 6.0 "Whisk" <--- R.I.P. | | | Re: Dolphin Striker
[Re: hobiegary]
#27090 01/08/04 02:49 AM 01/08/04 02:49 AM |
Joined: Aug 2002 Posts: 545 Brighton, UK grob
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Posts: 545 Brighton, UK | dolphin stiker would snag in the animal's scar-hole Gary, This scar hole thing is a myth, this is actually a hole through which the dolphin "breathes", because of this boats like the mystere are actually faster, the sudden rush of speed you are describing when on a Hobie 18 is due mainly to the initial panic of the dolphin as you block its airway, but this speed cannot be maintained as the dolphin soon passes out. Hooking the fold does not panic the dolphin quite as much but allows you to ride for longer maintaining a higher overall speed. I have had trouble tacking and gybing when using the dolphin striker does anyone know how to get them to turn? | | | Public service announcement
[Re: MauganN20]
#27096 01/08/04 05:23 PM 01/08/04 05:23 PM |
Joined: Dec 2001 Posts: 5,590 Naples, FL waterbug_wpb
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Posts: 5,590 Naples, FL | I'm sure someone can correct me (in the legal sense - there's no hope for the rest), but aren't we NOT allowed to mess with manatees?
Jay
| | | Re: Public service announcement
[Re: waterbug_wpb]
#27097 01/08/04 06:06 PM 01/08/04 06:06 PM |
Joined: Nov 2002 Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... Mary
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Posts: 5,558 Key Largo, FL & Put-in-Bay, OH... | You are right. However, in this case, we are not sure this is a manatee. I think it is a rock with a dog head stuck onto it, and Rick thinks it is a watermelon with the back half of a pig sticking out of it. If it is a manatee, it appears to be giving birth to an alien. | | | Re: Public service announcement
[Re: Mary]
#27098 01/08/04 10:16 PM 01/08/04 10:16 PM |
Joined: May 2002 Posts: 3,114 BANNED MauganN20
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Posts: 3,114 BANNED | it was a manatee.
We were docked in Bahia-Honda state park... we were sittin around, and we heard this loud yell in the direction of one of the cigarette boats that was docked. Alot of people were heading over to the boat after a while, so we checked it out.
The guy with the hose owned the boat, apparently he was hosing the salt off his watercamaro, turned aft and saw the sea-cow propped up on the swim deck staring up at him, licking the fresh water rolling off the stern. He drank fresh water out of the hose for about an hour straight. The park ranger came out and said that its unusual for them to venture that far south from the everglades, and the big guy was probably in desperate need of some fresh water. The whole time a ranger was there, and the manatee seemed to enjoy the crowd... after he had his fill, he went back underwater and left. | | |
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