| Re: How's it going at Spring Fever
[Re: MarkW_F18]
#72730 04/21/06 11:57 AM 04/21/06 11:57 AM |
Joined: Dec 2005 Posts: 1,121 Eastern NC, USA tshan
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Posts: 1,121 Eastern NC, USA | I had my traveler way out and was dumping the main when I was coming off the wire. Would anything have been different if the traveler stayed centered (or almost centered) and the main was dumped? I've always been taught that creating that "twist" is going to depower on a reach more effectively. Going on memory, the NF18 that saved the pictchpole looked to have the car centered or almost centered. Also notice the force of the mast moving forward on the NAF18 sequence and creating a very loose forestay (jib is bagged up). I've known that this happens, but have not seen such a dramatic capture of the effect of pitchpoling on the jib. Obviously, no amount of depowering helps in certain wind ranges.
Tom | | | Re: How's it going at Spring Fever
[Re: tshan]
#72731 04/21/06 12:29 PM 04/21/06 12:29 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | I had my traveler way out and was dumping the main when I was coming off the wire. Would anything have been different if the traveler stayed centered (or almost centered) and the main was dumped? I've always been taught that creating that "twist" is going to depower on a reach more effectively. Going on memory, the NF18 that saved the pictchpole looked to have the car centered or almost centered. Also notice the force of the mast moving forward on the NAF18 sequence and creating a very loose forestay (jib is bagged up). I've known that this happens, but have not seen such a dramatic capture of the effect of pitchpoling on the jib. Obviously, no amount of depowering helps in certain wind ranges. His luff was just loose on the jib - look at a few pictures before the pitchpole.
Jake Kohl | | | Re: How's it going at Spring Fever
[Re: MarkW_F18]
#72734 04/22/06 11:09 AM 04/22/06 11:09 AM |
Joined: Oct 2001 Posts: 395 LA Acat230
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Posts: 395 LA | The amazing thing is that he saved that pitchpole (photos 248-260). I've got to get some shoes that stick like that. I just wonder how his crew got back on the boat to finish the race.
I was not as lucky (photos 277-288) Even after studing those photos, I still can't beleive the hulls dug as quick as they did. We had overstood the mark and were reaching down to it, but I had my traveler way out and was dumping the main when I was coming off the wire. I've sailed H20s for 12 years and I'm use to bearing off in high winds with a overpowered main. It just happened so quick. I'm sticking to my story of microburst gust. Picture 247 - Main way too eased, boat flat, crew forward by beam (look at her right foot bracing on the front beam): pitchpole recipe waiting to happen! Solution, as you make the transition from sailing upwind to bearing away, get that weight (way) aft and fly the weather hull around the mark with the boat powered up (traveller centered, trim main to control heel but keep boat powered). Weight aft keeps the leeward hull up, heeled leeward hull is able to use more bouyancy, and higher speed keeps the water release further aft. Pictures 277 & 278 - You can see the same thing starting to happen. Crew weight is way too far forward. Look at how the leeward bow is already down. The eased traveller and relatively tight mainsheet is not letting the main twist off. That would allow the top to depower which helps unload the leeward bow. Here's a good drill. Go out on a windy day and sail upwind. Just practice making the transition from sailing upwind with both crew on the wire to sailing on a beam reach. As you bear off, both crew need to get back by the rear beam immediately. Keep the boat powered up, try to fly the boat through the transition with 10-20 degrees of heel, keep the jib trimmed correctly (don't let it stall), and watch the water release on the leeward hull as it moves aft and the boatspeed picks up. Once the boat is in this trim, it is easy to ease the main and come in off the wire and turn further downwind. If you can find pictures of Tornado racing, look at how far aft the crews are as they make the transition from the beat to the reaching offset leg. The driver is always on the rear beam keeping the boat under control. I was out last night in 15-18 knots of onshore breeze on Lake Pontchartrain with a very short and steep chop sailing my A2 which has much smaller bows than any F-18. It was wicked fun to jump on the back end of the boat and fly the hull down to a beam reach. Just by making the transition aft, keeping the hull flying, and keeping the speed up, I never once felt in danger of pitchpoling. Now go out there and rip into those turns! Bob Hodges A-Class USA 230 | | | Re: How's it going at Spring Fever
[Re: Rolf_Nilsen]
#72740 04/23/06 08:23 PM 04/23/06 08:23 PM |
Joined: May 2002 Posts: 3,114 BANNED MauganN20
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Posts: 3,114 BANNED | Team Velocity 2 took some video shots while on the water during Spring Fever. Check them out at www.velocitysailing.com | | | Re: How's it going at Spring Fever
[Re: MauganN20]
#72741 04/23/06 08:37 PM 04/23/06 08:37 PM |
Joined: Jan 2005 Posts: 829 Charleston, SC NCSUtrey
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Posts: 829 Charleston, SC | Definitely check out the video(s). My lovely girlfriend is the one who took the video off of Velocity Sailing's Hobie 16 (VS 2, yes we are fully represented in all fleets!). The 3rd video is taken on Joran Lake right here near Raleigh, and the others are from Spring Fever on Lake Hartwell in GA.
Trey
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