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Re: proper spinnaker technique [Re: Robi] #104221
05/09/07 07:05 PM
05/09/07 07:05 PM
Joined: Aug 2005
Posts: 2,921
Michigan
PTP Offline
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I was thinking thinking the same but wasn't going to judge given the different angles of the boats. There was one boat in the other pics that was clearly too loose though.
I will miss the HT's mast.. that thing is crazy strong.

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Re: proper spinnaker technique [Re: PTP] #104222
05/09/07 07:09 PM
05/09/07 07:09 PM
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Michigan
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now this is clearly too much IMO, emphasis on IMO
[Linked Image]
but then again, maybe they just set and he is getting ready to sheet in some.
yeah.. they just set it.. but still too much if it were my mast

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107637-IMG_2268.jpg (137 downloads)
Last edited by PTP; 05/09/07 07:11 PM.
Re: proper spinnaker technique [Re: PTP] #104223
05/09/07 07:35 PM
05/09/07 07:35 PM
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North-West Europe
Wouter Offline
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And take a look at the shape of the battens, that is a compounded s-curve (in multiple planes) !

Also look at boat numbered 3 further away, do you see the top of the mast bend off. Waaaaaaay to little mainsheet tension for those 20-25 knots of wind.

Also we are looking at the back of the boat and the mainsail appears to be absolutely perpendicular to the centreline, riding against the sidestay I'm sure. You don't pull a spi in those winds if your mainsail is trimmed like that, this is asking for trouble. And to be honest, it is not needed either. Even singlehandedly I never trim my mainsail like that in a blow.

Anybody out here claiming the alu F16 masts are anything other then completely abuse resistant ?

I can see why Matt was a nervous wreck at the end of the event. This was more like a durability test. In hindsight Matt and VWM came out clean, with a product now proven beyond a shread of doubt, but it must indeed have been nerve wrecking.


Wouter

Last edited by Wouter; 05/09/07 07:37 PM.

Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: proper spinnaker technique [Re: PTP] #104224
05/10/07 12:36 AM
05/10/07 12:36 AM
Joined: May 2002
Posts: 1,037
Central California
ejpoulsen Offline
old hand
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Bravo to the Blades for surviving that kind of abuse!


Eric Poulsen
A-class USA 203
Ultimate 20
Central California
Re: proper spinnaker technique [Re: PTP] #104225
05/10/07 02:42 AM
05/10/07 02:42 AM
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Tony_F18 Offline
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Quote
now this is clearly too much IMO, emphasis on IMO
[Linked Image]
but then again, maybe they just set and he is getting ready to sheet in some.
yeah.. they just set it.. but still too much if it were my mast

Judging by the lack of tension on the spinsheet, the traveller being way out of center, and the crew standing at the mast.
I think that the skipper is trying to blanket the spin for a hoist or drop.
If this was the case he should have only slacked the traveller though.
Another possibility is that there was a problem with the snuffer setup, maybe too much resistance on the halyard or something.
Another worrying thing is the joystick, this should be thrown behind the boat.

Re: proper spinnaker technique [Re: Tony_F18] #104226
05/10/07 03:13 AM
05/10/07 03:13 AM
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Posts: 4,451
West coast of Norway
Rolf_Nilsen Offline

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*Eeek*, is it the joystick that is sticking out behind the skipper? Nice way to crack it if it catch the right wave or when the crew go out on trapeze. I keep the tiller when going downwind if it is relatively light and I want my weight a bit forward, but in conditions like that it would go behind the boat as soon as I came inn from the trapeze.

Sure they are setting the spi. If you look at the boat in front of them the crew there also seem to be working on the spi. Having the mainsheet a bit slack when setting the spi isn't that dangerous if you are going deep to help your crew, but I agree that this is overdoing it. Skipper looks ready to trim in both mainsheet and traveller once the spi is up tough.
Must be nice pressure with the battens bending like that.

What classes did the participants of the Alter cup come from? With all the talk I have the impression that they mostly came from non-spi equipped classes? Am I right, and are spi-boats still relatively rare in the US?

Re: proper spinnaker technique [Re: Rolf_Nilsen] #104227
05/10/07 04:10 AM
05/10/07 04:10 AM
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Tony_F18 Offline
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The excessive mast bending from the boat in front can IMHO only be caused by the cunningham being max'ed out.

Re: proper spinnaker technique [Re: Rolf_Nilsen] #104228
05/10/07 04:28 AM
05/10/07 04:28 AM
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North-West Europe
Wouter Offline
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Actually alot of them came from spinnaker boats themselfs. Boats like the I-20 and F18/Tiger.

Wouter


Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: proper spinnaker technique [Re: Wouter] #104229
05/10/07 05:18 AM
05/10/07 05:18 AM
Joined: Jul 2004
Posts: 2,718
St Petersburg FL
Robi Offline
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Quote


Actually alot of them came from spinnaker boats themselfs. Boats like the I-20 and F18/Tiger.

Wouter
Not the sailors in that last photo. They came off a Hobie 16. This was the first time they ever sailed a spin boat.

Re: proper spinnaker technique [Re: Robi] #104230
05/10/07 06:37 AM
05/10/07 06:37 AM
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Posts: 3,293
Long Beach, California
John Williams Offline
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Hey Robi -

That is Paul and Mary Ann Hess - two-time Hobie 16 National Champions. Paul has made two other Alter Cups before and has some spin experience. Very game chap. Mary Ann has less experience with the 'chute, but is still excellent crew. This team had a particularly tough week - it was their mast that broke. If the breeze had been a little more moderate, I think they really would have shined. Don't make the mistake of writing them off if you ever race them.

ps - I thought the mast on the Blade was very bendy. It stands to reason that it would flex more than the mast on the Capricorn, but it seems to do so much more than I expected. Looking at photos, it seems that the diamond wires attach at slightly different places than on the wingmast I have. I'm sure there are experts who have engineered the attachment points, but they seem too low to me, leaving too much mast unsupported up high. Remember that nobody pushed the Alter Cup boats downwind very hard - when the wind was up, so was the sea-state. After our first gigantic stuff on our first downwind leg, we changed gears and never really changed back. Granted, the boat seemed to like it that way, but I feel it could be pushed quite a bit harder in flatter water - I just didn't feel we were going as fast as we could have been. My point is, however, that the mast seemed really bendy, even in the low-and-slow mode.


John Williams

- The harder you practice, the luckier you get -
Gary Player, pro golfer

After watching Lionel Messi play, I realize I need to sail harder.
Re: proper spinnaker technique [Re: John Williams] #104231
05/10/07 07:25 AM
05/10/07 07:25 AM
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I dont really see how you could push it hard without either a chickenwire or footstrap.
Maybe with the next Altercup there could something like a Pro training clinic to get the crews up to speed with their cat?

Re: proper spinnaker technique [Re: John Williams] #104232
05/10/07 09:06 AM
05/10/07 09:06 AM
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Posts: 9,582
North-West Europe
Wouter Offline
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Personally I want to stay well clear of naming the sailors in the pictures that we analyse. Still, I remember Matt metioning that the Hess's has been on the Blade F16 before the Alter Cup itself. The same with the kids Luke L. and Caroline W. Matt claimed that these crews expressed the opinion that the boat felt significantly different from what it is supposed to feel.

I quote

Quote

..., I am merely trying to state that the rig has a lot more versatility than was shown in this event. Some of the people who have run the boat before like the Kids and Hess's commented on how these boats felt mushy and not as responsive.



Source : http://www.catsailor.com/forums/sho...umber=106441&page=0&vc=1

So in all fairness, the Hess's were not totally new to the boat and several other teams can be seen in the pictures (or in the background of them) to trim the rig in much the same manner.

I can only say that that is mostly definately not the way I run things on my own boat in a blow and neither do the other 3 F16 crews at my club (+Geert). Maybe Matt is correct and the Alter Cup settings did indeed necessitate sailing the boats like this. Either way they were not designed to be sailed this way in these winds.


Quote

Granted, the boat seemed to like it that way, but I feel it could be pushed quite a bit harder in flatter water - I just didn't feel we were going as fast as we could have been.


Pull everything tight, release mast rotation, hoist spi, pick up speed gently with crew getting out on trap and moving to the rear of the skipper (hooking onto footstraps or the butt of the skipper) and then gently heat it up some more and steer, steer, steer. The combined weight just has to be on the rearbeam of slightly behind it, when flying a spi in a blow. When you sit next to one another on the luff hull then the weight is too much forward for a good blow. Remember moving the crew from sitting next to the sidestay to level with the rearbeam or just behind it is a difference of 70 kg over 1 mtr (3 feet) allowing 15 to 20 kg more saildrive at 3.75 up the mast (pressure point) before the bows go down and that is alot !


But, indeed, this is one of those boat specific trick one learns after a good number of hours on the boat and that simply can't happen in an event like the Alter Cup.

Wouter

Last edited by Wouter; 05/10/07 09:09 AM.

Wouter Hijink
Formula 16 NED 243 (one-off; homebuild)
The Netherlands
Re: proper spinnaker technique [Re: Wouter] #104233
05/10/07 09:32 AM
05/10/07 09:32 AM
Joined: Jun 2001
Posts: 3,293
Long Beach, California
John Williams Offline
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Hi Wouter -

I disagree with you slightly on a couple of things in your description, but for the most part, you're not wrong. Those priciples translate across platforms pretty well. I appreciate that there are pics posted showing people sheeted waaaaay out on these boats, but by no means were all teams doing it this way. In fact, even some of the teams shown did not do it the same way every time - most (as Matt noted in the referenced post) tried different things until they hit on something that felt right. Judging overall skill from a snapshot is a dangerous practice. Maybe Paul and Mary Ann had been on a Blade before the event - but I'd bet it was once, and it wasn't blowing 25. Familiarity with the systems is achievable in short order - familiarity with the nuances comes slower. I would just say that some of the posts in this thread might lead one to underestimate some of the teams that sailed.

Also, as Matt said, some teams did in fact figure out very quickly exactly where to be and what settings worked best - it can and does happen at every Alter Cup, no matter what the boat. I am always in awe of the people who demonstrate such versatility and "feel" for a boat they have never touched before.


John Williams

- The harder you practice, the luckier you get -
Gary Player, pro golfer

After watching Lionel Messi play, I realize I need to sail harder.
Re: proper spinnaker technique [Re: John Williams] #104234
05/10/07 09:44 AM
05/10/07 09:44 AM
Joined: Jun 2001
Posts: 9,582
North-West Europe
Wouter Offline
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I think we agree with eachother on these issues.

Your comments are perfectly reflected in the picture below, the difference in sail trim and mast shape between these two crews (boats) is striking.

Everybody note how straight the mast of boat number 2 is compared to the large S-shape of boat #6.

[Linked Image]

Wouter

Last edited by Wouter; 05/10/07 09:48 AM.
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