29er GBR 074 Tynemouth |
J24 (Sail No. 4239) Dartmouth |
Laurent Giles 'Jolly Boat' Exeter |
List classes of boat for sale |
Debunking Dodgy Sailing Theories |
Post Reply | Page <1 23456 9> |
Author | ||||
SoggyBadger
Really should get out more Joined: 26 Oct 10 Location: The Wild Wood Online Status: Offline Posts: 552 |
Post Options
Quote Reply
Topic: Debunking Dodgy Sailing Theories Posted: 22 Oct 11 at 8:31am |
|||
There has to be a more dignified way to have colonic irrigation than that. |
||||
Best wishes from deep in the woods
SB |
||||
fudheid
Far too distracted from work Joined: 21 Apr 11 Location: 51.53 N 01.28 E Online Status: Offline Posts: 241 |
Post Options Quote Reply Posted: 22 Oct 11 at 1:44pm | |||
The article goes on to state that it is when you are tacking after the mark because you keep more speed through the tack putting you ahead and the other yacht on your windward hip. if the two boats round doing an 'apex turn' surely the one who is closest or 'tightest' to the mark has the advantage? |
||||
Cheers you
only me from over the sea...... |
||||
Guests
Guest Group |
Post Options Quote Reply Posted: 22 Oct 11 at 4:02pm | |||
doh! Fair enough... |
||||
G.R.F.
Really should get out more Joined: 10 Aug 08 Location: United Kingdom Online Status: Offline Posts: 4028 |
Post Options Quote Reply Posted: 22 Oct 11 at 5:28pm | |||
Planing? Isn't that when you overtake your own bow wave and surf down the front?
|
||||
gbrspratt
Posting king Joined: 26 Sep 11 Location: Felixstowe Online Status: Offline Posts: 170 |
Post Options Quote Reply Posted: 23 Oct 11 at 9:49am | |||
Totally agree! |
||||
JohnW
Really should get out more Joined: 17 Jul 07 Location: United Kingdom Online Status: Offline Posts: 552 |
Post Options Quote Reply Posted: 23 Oct 11 at 8:24pm | |||
I think you you are both missing the point I am making. I agree with you that "wide in tight out" has tactical advantages when other boats are about, however in the absence of nearby boats the fastest way round the course is doing apex turns. So if you are in a handicap race and rounding the mark away from other boats, apex turns will get you a better elapsed time. It the two boats you mention are both doing an apex turn (optimal rate of turn for the boat, with the mark at the apex) then the will both exit the same distance from the mark. You cant do a real apex turn and come out tight to the mark - if you are tight to the mark on exit your apex was downwind of the mark so you sailed further. Despite what you have been told, you will be behind where you would have been if you were not so close to the mark on exit. |
||||
Dougal
Really should get out more Joined: 23 Sep 09 Location: England Online Status: Offline Posts: 556 |
Post Options Quote Reply Posted: 24 Oct 11 at 11:18am | |||
Or to put it more simply.... |
||||
JimC
Really should get out more Joined: 17 May 04 Location: United Kingdom Online Status: Offline Posts: 6649 |
Post Options Quote Reply Posted: 24 Oct 11 at 11:51am | |||
Interesting piece that one. Good find. There's a lot of mileage in considering what motorboat designers have to offer in that particular design area: its something they have to think about a lot with other design factors being simpler. .I like the point about speed and wake size: its so obvious you need to include the time factor and yet it hadn't occurred to me...
|
||||
Menace
Far too distracted from work Joined: 16 Oct 10 Online Status: Offline Posts: 296 |
Post Options Quote Reply Posted: 24 Oct 11 at 7:36pm | |||
It's a woodwork techniquie where strips of wood are effectively shaved off by a plane. Next question please.
|
||||
themeaningoflife
Far too distracted from work Joined: 06 May 11 Location: Essex/ Kent Online Status: Offline Posts: 212 |
Post Options Quote Reply Posted: 24 Oct 11 at 8:35pm | |||
This is true for a car and most other racing forms, but with sailing, because there is such a large disparity in speed between upwind and downwind, the quickest way around the course is to spend as little time as possible going upwind, thus tight in, wide out at a windward mark and wide in, tight out at a leeward mark. What is true however is that at a gybe mark or similar, where there is little speed change, the quickest route is and apex turn.
|
||||
Post Reply | Page <1 23456 9> |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |