OK found it - I think it needs to be on the menu as well as in the 'latest' section.
How do you add pictures?
Philip (just call me the dumb user)
How do you add pictures?
Philip (just call me the dumb user)
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#122
General National 12 chat / coaching sessions
26 Mar 2007, 07:33
does anyone know of dates and locations of any coaching next year? the 'coaching sessions' link is just pointing to the 'events' page.
Philip
Philip
#123
General National 12 chat / Re: Boat Database
26 Mar 2007, 07:28
Where is this database? I can't find a link anywhere...
Philip
Philip
#124
General National 12 chat / Re: survey
03 Mar 2007, 06:32
it would be a shame to close this down too early - one could always analyse the results so far and let the survey run another month. this could then be a further analysis.
Another way might be to take a random sample of 100 responses from the whole and analyse them.
I would have to say that the use of a variety of response types e.g. likert scale, cafeteria, nominal, free text, etc. will make it quite a challenge to analyse! I was unhappy with question 42. it presupposed that we only wanted one of the features, yet I did not think they were mutually exclusive.
it was fun to fill in mind.
Philip
Another way might be to take a random sample of 100 responses from the whole and analyse them.
I would have to say that the use of a variety of response types e.g. likert scale, cafeteria, nominal, free text, etc. will make it quite a challenge to analyse! I was unhappy with question 42. it presupposed that we only wanted one of the features, yet I did not think they were mutually exclusive.
it was fun to fill in mind.
Philip
#125
General National 12 chat / survey
21 Dec 2006, 08:39
I like the survey - hope you get some good responses. I have sent the link to scaling dam sailing club membership secretary and asked him to send it to the membership.
Philip
N3253
Philip
N3253
#128
General National 12 chat / Re: Boat Show 'Battle of the Classes' Pursuit Race
16 Dec 2006, 08:59
boing
#129
General National 12 chat / Re: Date of distribution of 2006 Newsletter
16 Dec 2006, 08:59
boing
#132
General National 12 chat / Re: Planing in 12s.
13 Dec 2006, 07:59
What are the actual forces on the hull from a N12 rig?
From the little I know, on a reach the forces are partly sideways, countered by the centreboard.
Can we work out a way to drag to mimic this?
Philip
N3253
From the little I know, on a reach the forces are partly sideways, countered by the centreboard.
Can we work out a way to drag to mimic this?
Philip
N3253
#133
General National 12 chat / Re: Planing in 12s.
07 Dec 2006, 07:17
yes - I think the relative test has a lot going for it.
Angus - this is exactly the type of stuff we need - looks like we should attach the pull to the mast and have the centre of attachment high up on the towing boat then.
Of course the problem with all this controlled experimentation is you are laid open to probems of generalisation.
Philip
N3253
Angus - this is exactly the type of stuff we need - looks like we should attach the pull to the mast and have the centre of attachment high up on the towing boat then.
Of course the problem with all this controlled experimentation is you are laid open to probems of generalisation.
Philip
N3253
#135
General National 12 chat / Re: Planing in 12s.
06 Dec 2006, 11:43
This experiment is getting a) overcomplicated and b) incredibly time consuming to perform.
It takes a crew od 10-15 highly skilled people with millions of pounds budget a whole week to get 2 or three runs of a land speed record car for example.
I think what you are proposing to do on a shoe string is impossible and would prove nothing beyond doubt, therfore would be worthless in the scientific sense (it might be a good day out mind:-)
I would propose doing this in software, or scale models. It would be interesting to get laser plots taken of several 'winning' boat designs. These would then be captured for posterity as the digital data can be archived in the maritime museum for longer than the hulls will actually exist, which will have some merit of its self. These 3D models can then be used to create exact scale models using rapid prototyping, or software models. These can be tested exaustively under a miriad of simulated conditions. (fresh water, salt water, differing crew weights, differing moments due to wind strength and heeling forces, etc... etc...)
I guess the results might interest a host of stakeholders such as magazines, software manufacturers, museums, universities etc. etc. some of these might be willing to fund the project.
I admit, it's not as fun as towing a few boats rond a lake - if you still want to do this, I suggest keeping it simple and using the average crew weightin a given fixed position with a given tow point at a given speed and on similat water. the observations should be as many as possible - because you will not be able to go back and repeat this easily - so measure EVERYTHING qualitative and quantitative (best to put a person in the boat and they can offer a 'seat of the pants' analysis as well!).
Philip
N3253
It takes a crew od 10-15 highly skilled people with millions of pounds budget a whole week to get 2 or three runs of a land speed record car for example.
I think what you are proposing to do on a shoe string is impossible and would prove nothing beyond doubt, therfore would be worthless in the scientific sense (it might be a good day out mind:-)
I would propose doing this in software, or scale models. It would be interesting to get laser plots taken of several 'winning' boat designs. These would then be captured for posterity as the digital data can be archived in the maritime museum for longer than the hulls will actually exist, which will have some merit of its self. These 3D models can then be used to create exact scale models using rapid prototyping, or software models. These can be tested exaustively under a miriad of simulated conditions. (fresh water, salt water, differing crew weights, differing moments due to wind strength and heeling forces, etc... etc...)
I guess the results might interest a host of stakeholders such as magazines, software manufacturers, museums, universities etc. etc. some of these might be willing to fund the project.
I admit, it's not as fun as towing a few boats rond a lake - if you still want to do this, I suggest keeping it simple and using the average crew weightin a given fixed position with a given tow point at a given speed and on similat water. the observations should be as many as possible - because you will not be able to go back and repeat this easily - so measure EVERYTHING qualitative and quantitative (best to put a person in the boat and they can offer a 'seat of the pants' analysis as well!).
Philip
N3253