Walk of shame...I think not!!!

> 10 years ago
Reply
Register to post, see what you've read, and subscribe to topics.
Davage
Davage
VIC
182 posts
VIC, 182 posts
3 Feb 2012 9:38pm
Ive spent much time sitting on the rail looking at keels and often thaught that I could just slide down and stand there.
I would love to give this a go


GalahOnTheBay
GalahOnTheBay
NSW
4188 posts
NSW, 4188 posts
3 Feb 2012 9:57pm
haha classic!

What a great idea for an advertisement. silly. but great!
decrepit
decrepit
WA
12873 posts
WA, 12873 posts
3 Feb 2012 9:29pm
Isn't that canting keel canting the wrong way???
dinsdale
dinsdale
WA
1227 posts
WA, 1227 posts
3 Feb 2012 10:07pm
decrepit said...
Isn't that canting keel ...

Yep!

decrepit said...
... canting the wrong way???

Nope!
decrepit
decrepit
WA
12873 posts
WA, 12873 posts
3 Feb 2012 10:17pm
I thought the idea was to keep the keel vertical????? surely it's more efficient that way.
dinsdale
dinsdale
WA
1227 posts
WA, 1227 posts
3 Feb 2012 10:28pm
decrepit said...
I thought the idea was to keep the keel vertical????? surely it's more efficient that way.

The idea is to maximise the advantage of the weight bulb on the end of the keel. They wouldn't normally sail heeled right over on their ear like in video, though and they wouldn't normally cant the keel until it clears the water surface. That clip is done for an ad, not for maximum performance.


Davage
Davage
VIC
182 posts
VIC, 182 posts
4 Feb 2012 11:06am
dinsdale said...

decrepit said...
I thought the idea was to keep the keel vertical????? surely it's more efficient that way.

The idea is to maximise the advantage of the weight bulb on the end of the keel. They wouldn't normally sail heeled right over on their ear like in video, though and they wouldn't normally cant the keel until it clears the water surface. That clip is done for an ad, not for maximum performance.





A couple of boats have been released where the canting keel is designed to fly just above the water line to reduce drag. Makes for interesting racing in thight situations.
Ill also add that its not 100% sucesfull yet as under spinikar is Sydney Harbour the bulb fell off


Davage
Davage
VIC
182 posts
VIC, 182 posts
4 Feb 2012 11:13am
decrepit said...

I thought the idea was to keep the keel vertical????? surely it's more efficient that way.


Keel and rudder verticle in water is best for control.
5 tonne of balast acting as a leaver out the side best for speed.
Lots of these types of boats have a foward dagger board that they lower so they can have the best of both worlds.
saltiest1
saltiest1
NSW
2568 posts
NSW, 2568 posts
4 Feb 2012 11:16am
decrepit said...

I thought the idea was to keep the keel vertical????? surely it's more efficient that way.


the more upright the sail the more efficient itll become - less spill of wind, more efficient forward pull, and greater surface area to wind as well. i think around a 5 degree angle to leeward is the target but depends on the sail and boat.
dinsdale
dinsdale
WA
1227 posts
WA, 1227 posts
4 Feb 2012 12:53pm
saltiest1 said...

decrepit said...

I thought the idea was to keep the keel vertical????? surely it's more efficient that way.

the more upright the sail the more efficient itll become - less spill of wind, more efficient forward pull, and greater surface area to wind as well. i think around a 5 degree angle to leeward is the target but depends on the sail and boat.

Yea, around 5* is typical/optimum for displacement yacht hulls (if there's such a thing now ). Small boats are meant to be kept pretty much bolt upright (ie mast vertical)

decrepit
decrepit
WA
12873 posts
WA, 12873 posts
4 Feb 2012 10:03pm
Davage said...

decrepit said...

I thought the idea was to keep the keel vertical????? surely it's more efficient that way.


Keel and rudder verticle in water is best for control.
5 tonne of balast acting as a leaver out the side best for speed.
Lots of these types of boats have a foward dagger board that they lower so they can have the best of both worlds.


OK that makes sense now thanks.
Please Register, or first...
Topics Subscribe Reply

Return To Classic site 😭
Or... let us know if a problem, so we can tweak! 😅