Why The Flip

Ok, I'm trying to figure out what these guys did wrong to cause this cat to flip. It happens a minute into the video. Enlighten me.
www.youtube.com/watch?v=NnxKpAaZNLc

Newton's laws of physics. An object in motion tends to stay in motion until a new force acts upon it.

In other words the guy cut the tiller so hard that the boat changed direction but the momentum of their body mass made them go over the backside of the boat.

That and neither one of them had their feet under the straps on the tramp. That's what they are there for.

OR, you can keep yourself hooked up to the trap wires as you sit on the tramp. At least then if you do get spit out the back, the boat will still be attached to you and not going off without you. <img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" />

Centrifugal Force.
The boat pivots on the dagger boards with such force that it just throws you off the boat if you don't hang on.

Uhm, getting hit in the face by the main as it gybes over before you are ready doesn't help either...nor does sitting on the new leeward hull as it digs in from the boat turning too fast. And c'mon, trap out already...

At 56 seconds, boat's hit with a puff and skipper starts driving deeper - looks like a bit of a port lift, too. As they start the gybe to starboard, they're already really deep, so the main and jib filled from starboard sooner than they expected, which put them instantly on the low side leaning back... then the crew clings to the spin sheet, 'chute backwinds hard, and over she goes. Two events there - team falls off the low side when they're through the gybe sooner than expected, and boat flips due to backwinded 'chute. Good thing, too - it could have sailed much further away before flipping. <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />

Good breeze, flat water - looks like fuuuuuun! Work on those singing boards, though. <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

Thanks a million, guys! I see it now. It's funny once you understand what they did wrong. I've never seen both guys fall off a boat before it flipped.

Talking about gybing, I can understand why you'd do it in a race, but on a casual run, why would you want to gybe? Doesn't it put unnecessary stress on the stays? Growing up sailing Hobies, the owner would always tell me "don't gybe my boat."

Thats odd, I have a H14 friend who says that he never even bothers to tack because it is too much work, he just circles around and gybes every time instead. I guess with the jib on the 14 though it can be a bugger to get through the wind

You gybe to get to where you want to go. Gybing in heavy air can be a bit tricky but it's not anything the boat shouldn't be able to handle. Gybing spinnaker boats is much easier because you are going much closer to windspeed (so when the sails transition sides, they do so much gentler if you keep your speed up).

Can't tack with a spinnaker(not gracefully anyhow), so even for just recreational sessions spin=gybe.

What is the yellow catamaran at 2:53 and 2:55?

http://www.youtube.com/watch?v=FWINygISxDE&feature=related

been there, done that too many times to not have sympathy <img src="http://www.catsailor.com/forums/images/graemlins/tongue.gif" alt="" />

Gybing in high winds is the most difficult thing to do on these boats IMO

Hmmm.... not a whole lot to go off there.

My guess is a Hurricane 6.5 made by Loday/White. That's a pretty wild guess, based on that it looks wider than 8.5' and the rudder castings look like the old Reg white design.

The 6.5 was White Formula, not Loday/White.
Most photos of the 6.5 showed racks - but there were a few built - maybe some without. The rig was so powerful, I think that you needed to use the racks in any kind of wind.
Also I doubt that Reg built hulls that colour <img src="http://www.catsailor.com/forums/images/graemlins/frown.gif" alt="" />.
Another also the 6.5 had large fairings at the beams and a lot more hull behind the rear beam. And also the mainsail was low forward and had a short high boom at the aft section - it's easy when you are looking at a photo from the brochure <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

The 6.5 was a monster - there was one still in the yard at the White's last time I was there.

Robert said himself it was a beast and would bite you if not careful.

That's some awesome video. Didn't know those cats were that fast.

SPINNAKER UP = DAGGERBOARDS UP

Debate on boards up or down continues... I agree up, but I've seen winners who never touch 'em.

In the higher winds, on the Spitfire, on the edge downwind - up or down is the difference between pitchpole or not - you can feel the cat trying to trip over the boards, if they are down.

Dermot you're right, of course - in big air they have to come up. In the conditions in the vid, I think you can get away with leaving them down.

yea, i guess i'm a bit off here on the hurricane. This is the photo I had in my mind but I had definitely forgotten a few details.

thats a friggin monster!

That's probably Wouter showing off again <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

I have always been a student of the French revolution. After all they taught us that a good way to keep the rich and powerful in order is to cull them every now and then.
If any of us needed another reason to forgive the cheese eating and thank the French, this would be it.
I never get sick of that image of the tri coming into frame.

AWESOME !!! WOOF ... WOOF ... WOOF


Sail Flat, Sail Very Fast
Harry

Hey, I did not know there was a yellow 6.5 made. Looks cool <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" />

The mast is the same colour - I'd say it's all a re-spray <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />

JW, I thought I saw a picture of -some guys- racing downwind on the Blade, at the Alter Cup, in the lead, with the boards at least half way up... <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" /> That is, when they weren't showing off by doing "arial stunts" on the wire! Playing Peter Pan and that sort of thing. <img src="http://www.catsailor.com/forums/images/graemlins/shocked.gif" alt="" />

Boards down, big lead, 15-18 knots and pretty flat water. The Blade just didn't seem to mind.

Uhhuh. In medium wind and flat water, sure. But over 20, you might want to consider it.

But sometimes it helps...