Dinghy multihulls: Driving Cats hard downwind

Print Page | Close Window

Driving Cats hard downwind

Printed From: Yachts and Yachting Online
Category: Multihulls
Forum Name: Dinghy multihulls
Forum Discription: For those who prefer two (or more) hulls to one!
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=2156
Printed Date: 28 Jun 25 at 11:53am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com

Topic: Driving Cats hard downwind

Posted By: Port End Flyer
Subject: Driving Cats hard downwind
Date Posted: 01 Sep 06 at 1:15pm

I found this topic in “Favourite Photos” it obviously didn’t belong there, but was I felt good subject material, so I have attempted to “Copy & Paste” that discussion here to be continued.

-------------
Close your eyes and "GO FOR IT!" What else do we pay insurance premiums for?

Replies:

Posted By: Port End Flyer
Date Posted: 01 Sep 06 at 1:16pm

boatshed
Groupie

Joined: 13 Apr 05
Online Status: Offline
Posts: 49

Posted: 30 Aug 06 at 6:43pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60518&FID=8&TID=382&TPN=345"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60518&TPN=349">

Umm... precisely why cats can't be driven hard downwind. It doesn't even look that breezy and now they'll be utterly dependant decent power boat to up end it. I don't doubt that cats are super quick in moderate winds but that photo sequence by Tornado Alive does absolutely nothing to encourage me into a cat. I doubt if the crew did much wrong, its just that all high performance cats seem to have the same serious vice.

__________________
Steve

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=1334&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=boatshed&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=345"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=boatshed"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=boatshed">

Scooby_simon
Really should get out more

Joined: 03 Apr 04
Location: United Kingdom
Online Status: Offline
Posts: 981

Posted: 30 Aug 06 at 6:58pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60519&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60519&TPN=349">

boatshed wrote:

What the F%%%%%. That was no where near wipeout time for the Tornado and you can write a Tornado simply.

The Vx's were righted with a power boat in a few minutes.

As for flying a hull over an Oppie, I could not possibly comment......

__________________
UK SCHRS Rep.
Inter 17 Spi http://tinyurl.com/6kxxj - For sale Make me an offer, I might accept it !
I also talk sport http://www.letshaveachat.com/ - here

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=156&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Scooby%5Fsimon&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.letshaveachat.com/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Scooby%5Fsimon"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Scooby%5Fsimon">

-------------
Close your eyes and "GO FOR IT!" What else do we pay insurance premiums for?

Posted By: Port End Flyer
Date Posted: 01 Sep 06 at 1:19pm

m_liddell
Posting king

Joined: 28 May 05
Location: United Kingdom
Online Status: Offline
Posts: 179

Posted: 30 Aug 06 at 7:39pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60523&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60523&TPN=349">

On the topic of cats being driven hard downwind; why is it that cats never twin wire with the kite up like skiffs do? Surely they could go much faster twin wiring?

Also to depower with the kite up you bear away, often quite quickly. This is recipe for a pitchpole in a cat since it will stuff the leeward hull in at speed. How do you manage this?

Edited by m_liddell on 30 Aug 06 at 7:42pm

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=1579&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=m%5Fliddell&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=m%5Fliddell"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=m%5Fliddell">

Tornado_ALIVE
Far too distracted from work

Joined: 07 Nov 04
Location: Australia
Online Status: Offline
Posts: 428

Posted: 30 Aug 06 at 7:44pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60524&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60524&TPN=349">

boatshed wrote:

Obviously an edjucated commement from someone whom is even partly experienced in multies.

Lucky monos don't have vices.

Tornado_ALIVE
Far too distracted from work

Joined: 07 Nov 04
Location: Australia
Online Status: Offline
Posts: 428

Posted: 30 Aug 06 at 7:55pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60526&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60526&TPN=349">

m_liddell wrote:

On the topic of cats being driven hard downwind; why is it that cats never twin wire with the kite up like skiffs do? Surely they could go much faster twin wiring?

They can and people have experimented with it, however when trying to achieve maximum VMG downwind, it is not efficient to run that hot. If we overlay a mark, we will twin wire....... or when we are clowning about and not after VMG.

m_liddell wrote:

Also to depower with the kite up you bear away, often quite quickly. This is recipe for a pitchpole in a cat since it will stuff the leeward hull in at speed. How do you manage this?

Just like a Skiff, you must anticipate the gust. However it will have to be a big gust and a big bear away after you have reacted far to late to cause a nose dive.. It is no different to high performance skiffs monos or yachts.

Edited by Tornado_ALIVE on 30 Aug 06 at 7:56pm

__________________
www.formula18alive.com

[URL}www.2007f18worlds.com[/URL]

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=485&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Tornado%5FALIVE&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.formula18alive.com/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Tornado%5FALIVE"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Tornado%5FALIVE">

Port End Flyer
Newbie

Joined: 30 Aug 06
Location: United Kingdom
Online Status: Online
Posts: 4

Posted: 30 Aug 06 at 9:27pm \| IP Logged	http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60528&TPN=349">

boatshed wrote:

Umm... precisely why cats can't be driven hard downwind....its just that all high performance cats seem to have the same serious vice.

Red rag to a few bulls I would think!? New thread?

And a good attempt at a reply by Tornado_ALIVE under extreme prevarication?

On the whole I would say that Cat classes do pitchpole more than most Mono’s, however they certainly do not capsize as frequently!

However I have never seen a Mono class advertise its boat at the Dinghy Show on its ability to pitchpole, whereas a well know Cat class has!

In agreement with Tornado_ALIVE the three or four boats in the video were not racing, but they all either;-

1/ Pitchpoled on the same moderate gust?

2/ The ability shown by the crews to puposely pitchpole their craft in the correct sequence and timing only went to underline the skill of the sailors on show.

__________________
Close your eyes and "GO FOR IT!"

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=3123&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Port+End+Flyer&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Port+End+Flyer"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Port+End+Flyer"> http://www.yachtsandyachting.com/forum/edit_post.asp?PID=60528&PN=0&TPN=346">

Worthy
Groupie

Joined: 08 Dec 05
Location: United Kingdom
Online Status: Offline
Posts: 88

Posted: 30 Aug 06 at 9:53pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60529&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60529&TPN=349">

Port End Flyer wrote:

boatshed wrote:

Umm... precisely why cats can't be driven hard downwind....its just that all high performance cats seem to have the same serious vice.

Red rag to a few bulls I would think!? New thread?

And a good attempt at a reply by Tornado_ALIVE under extreme prevarication?

On the whole I would say that Cat classes do pitchpole more than most Mono’s, however they certainly do not capsize as frequently!

However I have never seen a Mono class advertise its boat at the Dinghy Show on its ability to pitchpole, whereas a well know Cat class has!

In agreement with Tornado_ALIVE the three or four boats in the video were not racing, but they all either;-

1/ Pitchpoled on the same moderate gust?

2/ The ability shown by the crews to puposely pitchpole their craft in the correct sequence and timing only went to underline the skill of the sailors on show.

I know the people in the video and they are some of the best cat sailors in the UK and I can assure you that it was most definately the second of the above two options.

__________________

http://www.garvins.co.uk/">

http://www.garvins.co.uk/ - Garvins

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=2281&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Worthy&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.garvins.co.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Worthy"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Worthy">

JimC
Really should get out more

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 935

Posted: 30 Aug 06 at 11:20pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60540&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60540&TPN=349">

boatshed wrote:

However I have never seen a Mono class advertise its boat at the Dinghy Show on its ability to pitchpole, whereas a well know Cat class has

You need to look round a bit more mate: at least one of those mono photos has been used by the class in question at Sailboat more than once. In any case what's so terrible about pitchpoling? If you want to sail a Wayfarer or something that will never pitchpole then that's great, but I won't be in the next boat on a Champs start line.

Edited by JimC on 31 Aug 06 at 12:08am

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=249&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=JimC&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=346"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=JimC"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=JimC">

Worthy
Groupie

Joined: 08 Dec 05
Location: United Kingdom
Online Status: Offline
Posts: 88

Posted: 30 Aug 06 at 11:22pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60541&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60541&TPN=349">

Edit: Comment removed

Edited by Worthy on 31 Aug 06 at 12:39am

__________________

http://www.garvins.co.uk/">

http://www.garvins.co.uk/ - Garvins

http://www.yachtsandyachting.com/forum/#top -

m_liddell
Posting king

Joined: 28 May 05
Location: United Kingdom
Online Status: Offline
Posts: 179

Posted: 31 Aug 06 at 1:25am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60549&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60549&TPN=349">

Tornado_ALIVE wrote:

m_liddell wrote:

On the topic of cats being driven hard downwind; why is it that cats never twin wire with the kite up like skiffs do? Surely they could go much faster twin wiring?

Interesting that the best vmg in monos (when these is breeze) is to twin wire and cats not to. I wonder why it is?

http://www.yachtsandyachting.com/forum/#top -

JimC
Really should get out more

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 935

Posted: 31 Aug 06 at 3:52am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60552&FID=8&TID=382&TPN=346"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60552&TPN=349">

m_liddell wrote:

Interesting that the best vmg in monos (when these is breeze) is to twin wire and cats not to. I wonder why it is?

Not every mono perhaps. Andy Paterson won the Cherub champs last year without twin wiring downhill. There's a reasonably sound guess as to why it mightbe though.

The high powered skiffs very dramatically reduce wetted area at high speed as against more moderate speed, so its worth going high and acceping the penalty. The Cats, on the other hand, not being planing boats, have a much more linear relationship between speed and power, so don't gain so much by sailing the hot angles.

http://www.yachtsandyachting.com/forum/#top -

-------------
Close your eyes and "GO FOR IT!" What else do we pay insurance premiums for?

Posted By: Port End Flyer
Date Posted: 01 Sep 06 at 1:20pm

Doug.H
Far too distracted from work

Joined: 04 Jun 05
Location: United Kingdom
Online Status: Offline
Posts: 224

Posted: 31 Aug 06 at 4:54am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60554&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60554&TPN=349">

m_liddel wrote:

Interesting that the best vmg in monos (when these is breeze) is to twin wire and cats not to. I wonder why it is?

I dunno, i thought it was kind of obvious.......Do you realise how much leverage a cat already has just through the weight of the windward hull?? Add another person on the wire and you've got a load more on top of that. Even once youve got everyones weight on the wire on a skiff, im still not sure as to whether you'd have as much leverage working as a cat with one person on the wire.

I could be wrong though.

Doug

__________________
I'll be good one day!

www.myspace.com/sailordoug

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=1596&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Doug%2EH&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.wilsoniansc.org.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Doug%2EH"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Doug%2EH">

Worthy
Groupie

Joined: 08 Dec 05
Location: United Kingdom
Online Status: Offline
Posts: 88

Posted: 31 Aug 06 at 5:50am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60556&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60556&TPN=349">

It is very interesting listening to all the theories and I agree with all of them, especially the one about the leverage.

On an F18 the crews feet is 8ft 6in from the pivot point of the boat, which means their head is 14ft 6in from the pivot point (assuming they are 6ft). This is more than any mono I can think of including an 18ft skiff (I think).

__________________

http://www.garvins.co.uk/">

http://www.garvins.co.uk/ - Garvins

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=2281&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Worthy&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.garvins.co.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Worthy"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Worthy">

Tornado_ALIVE
Far too distracted from work

Joined: 07 Nov 04
Location: Australia
Online Status: Offline
Posts: 428

Posted: 31 Aug 06 at 6:33am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60559&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60559&TPN=349">

Doug and Worthy are both correct..... Not only the leverage from the 8'6" beam or 10' on the T, but also the weight of the hull and rig.

__________________
www.formula18alive.com

[URL}www.2007f18worlds.com[/URL]

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=485&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Tornado%5FALIVE&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.formula18alive.com/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Tornado%5FALIVE"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Tornado%5FALIVE">

MRJP BUZZ 585
Really should get out more

Joined: 06 Mar 06
Location: United Kingdom
Online Status: Offline
Posts: 554

Posted: 31 Aug 06 at 6:39am \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60560&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60560&TPN=349">

Scooby_simon wrote:

As for flying a hull over an Oppie, I could not possibly comment......

i heard some where a 18 footer could fit its wing over an oppie

__________________
Josh Preater
BUZZING IS FUN

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=2574&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=MRJP+BUZZ+585&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.bu22.co.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=MRJP+BUZZ+585"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=MRJP+BUZZ+585">

Medway Maniac
Posting king

Joined: 14 May 05
Location: United Kingdom
Online Status: Offline
Posts: 153

Posted: 31 Aug 06 at 3:52pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60570&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60570&TPN=349">

All this quarreling over the relative merits of cats and monos is pointless - you just choose the ride that appeals most to your taste.

Absolute speed is irrelevant: we'd all go faster on a jet-ski (or a moped....).

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=1526&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Medway+Maniac&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.wilsoniansc.org.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Medway+Maniac"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Medway+Maniac">

Worthy
Groupie

Joined: 08 Dec 05
Location: United Kingdom
Online Status: Offline
Posts: 88

Posted: 31 Aug 06 at 3:54pm \| IP Logged	http://www.yachtsandyachting.com/forum/report_post.asp?PID=60572&FID=8&TID=382&TPN=347"> http://www.yachtsandyachting.com/forum/edit_post.asp?M=Q&PID=60572&TPN=349">

Medway Maniac wrote:

All this quarreling over the relative merits of cats and monos is pointless - you just choose the ride that appeals most to your taste.

Absolute speed is irrelevant: we'd all go faster on a jet-ski (or a moped....).

Quarreling wouldn't be my word of choice, we were merely discussing why you sail cats downwind with one person on the wire when you do so with two on a mono.

__________________

http://www.garvins.co.uk/">

http://www.garvins.co.uk/ - Garvins

http://www.yachtsandyachting.com/forum/#top -

javascript openWin'pop_up_profile.asp?PF=2281&FID=8','profile','toolbar=0,location=0,status=0,menubar=0,scrollbars=1,resizable=1,width=590,height=425'"> http://www.yachtsandyachting.com/forum/search_form.asp?KW=Worthy&SI=AR&FM=8&FID=8&TID=382&PN=0&TPN=347"> http://www.garvins.co.uk/"> http://www.yachtsandyachting.com/forum/pm_new_message_form.asp?name=Worthy"> http://www.yachtsandyachting.com/forum/pm_buddy_list.asp?name=Worthy">

-------------
Close your eyes and "GO FOR IT!" What else do we pay insurance premiums for?

Posted By: Port End Flyer
Date Posted: 01 Sep 06 at 1:21pm

I find myself not fully agreeing with the “You can have too much of a good thing” school as taught by Doug, Worthy & T_Alive, leverage is good in a sailing boat.

But in agreement with JimC most fast planning Mono’s have a relatively gradual change from the pointed bow to a wide flat stern and by lifting the bow (if the wind conditions allow) can reduce the wetted area and promote planning on the wide flatter rear section of the hull, dramatically increasing the boats speed.

Cats generally have “V” shaped narrow hulls that make them displacement sailing craft, albeit very fast displacement craft, and as max speed is in direct relationship to waterline length for displacement craft, tipping the boat fore & aft will only reduce this length and hence speed.

So if flat is fastest for Cats it may explain why the pitchpole is more common in Cats, as Monos have a greater leeway before burying a bow, because it started further above the surface giving Mono sailors more time to react?

-------------
Close your eyes and "GO FOR IT!" What else do we pay insurance premiums for?

Posted By: Tornado_ALIVE
Date Posted: 01 Sep 06 at 1:47pm

Check out my video for some downwind footage in fresh breeze and check out the trim of the boat. It is 19mb so you may want to download first......

http://www.formula18alive.com/f18alive.wmv - http://www.formula18alive.com/f18alive.wmv

-------------

http://www.formula18alive.com - www.formula18alive.com

Posted By: Tornado_ALIVE
Date Posted: 01 Sep 06 at 2:04pm

Driving a cat hard downwind is all about technique and knowing when to throttle back, just like a mono. Warning signs are also just as easy to see. Even Skiffs will throttle back in breeze sometimes bringing the skipper in and running a bit deeper.

With a cat though, if you use a chicken line, when you stick a bow in, you will rearly swim if at all. Monos don't have this luxury.

This is us sending it in perhaps the ride of our life in 30 knots and BIG waves. Crew got right down the back of the boat and we did not look like we were going to cartwheel.

-------------

http://www.formula18alive.com - www.formula18alive.com

Posted By: far canal
Date Posted: 01 Sep 06 at 2:31pm

oho here we go again .

why don't the missinformed just listen to folk like Tor alive and even mono man Jim c,scooby too , as far as i can see only ones here knowing what they are talking about . It was a good question (i suppose) from someone wanting to know the answers .

Whits the guff all about cats being displacement boats with a max speed defined as a function of w line length ?????, that goes oot the window when beam to ratio significantly drops ( or goes up whatever way its defined - long and skinny aint bound by rules is the point )

I saw more monohulls going down the mine last weekend than cats in a decade of sailing , and as someone said above ---- so what ?

Posted By: catmandoo
Date Posted: 01 Sep 06 at 2:42pm

Get one with wings on its rudders like John Pierces Stealths , shouldn't really say this with this weekends forecast , but as J P's advert says you can drive them harder than other cats offwind .

-------------

Posted By: Scooby_simon
Date Posted: 01 Sep 06 at 3:58pm

Originally posted by catmandoo

Get one with wings on its rudders like John Pierces Stealths , shouldn't really say this with this weekends forecast , but as J P's advert says you can drive them harder than other cats offwind .

You most certainly can.

Until I sailed a Stealth I did not totally believe it.

BUT; Gust arrives, boat dips the nose 1/2 an inch and then just accelerates

Found it quite odd not haveing to react the the bows digging down and just steer the windward hull. I like it a lot....

-------------
Wanna learn to Ski - PM me..

Posted By: Worthy
Date Posted: 02 Sep 06 at 11:10am

Originally posted by Tornado_ALIVE

With a cat though, if you use a chicken line, when you stick a bow in, you will rearly swim if at all. Monos don't have this luxury.

Chicken lines are for chickens

On a more serious note we find that the foot loop on the back corner is enough to keep the crew on the back in a nose dive.

-------------

Posted By: Tornado_ALIVE
Date Posted: 02 Sep 06 at 11:48am

I am quiet supprised that few people in the F18 class use chicken lines. They are quiet popular in the Tornado Class.

On big nose dives we have come out of foot straps. Also in the real fresh stuff, we get our back foot on the transom getting weight futher back. This is a technique we picked up from John Forbes several years ago after he saw a Euro team use it to great effect in a fresh series.

-------------

http://www.formula18alive.com - www.formula18alive.com

Posted By: Seb_Greber
Date Posted: 02 Sep 06 at 10:33pm

hi i sail a Hobie Dragoon but movin onto a Hobie 16 after getting 4th in the worlds and winning the Nationals, and also because im too big now!. Dragoons are too short to get your weight back when it really windy! so u cant really trapeze downwind because the nose goes in before the hull comes up! thats normally if it wavey but evem when its flat sometimes! i was wondering does a chickin line not leve u hanging in mid air if the boat does go over and i would not like the thought of that!

Me singlehanding (do have a crew lol)

Posted By: Worthy
Date Posted: 06 Sep 06 at 8:50pm

Originally posted by Tornado_ALIVE

I am quiet supprised that few people in the F18 class use chicken lines. They are quiet popular in the Tornado Class.

Good diagram.

I can see the logic for them, don't get me wrong, I have just never had the need so never put one on.

-------------

Posted By: Soggy Doggie
Date Posted: 09 Sep 06 at 8:44pm

Originally posted by Seb_Greber

hi i sail a Hobie Dragoon but movin onto a Hobie 16 after getting 4th in the worlds and winning the Nationals

Me singlehanding (do have a crew lol)

Wow Seb, that's impressive. Are you an olympic hopeful?

-------------
A Cat is for life, not just for christmas.