I was an early and consistent hassler of Grain on the basis of their gayness and other limp wristed factors but their Chief Grainer made a few complimentary remarks about my work a few...
Type: Posts; User: Roy Stuart; Keyword(s):
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Halloween is ultra crass.
I just followed the link on post one.
Gentlemen you are correct, it's as gay as. Too many knees, they stand too close together, and it appears that it's some kind of fashion shoot pretending to...
Oct 29, 2015, 09:04 PM
Oct 26, 2015, 07:54 PM
I cut back when it's necessary. It wasn't.
Oct 26, 2015, 11:30 AM
Oct 15, 2015, 11:33 PM
It's easy and fun to play with these tools at aitfoiltools, the first link is to a reynolds number calculator, it has a water temperature toggle on the bottom right of the page. The range of...
Oct 15, 2015, 11:20 PM
Yeah basically one won't notice it in terms of drag I shouldn't think ( although the added drag on the surfboard hull and fins is significant).
The most noticeable possible difference is likely to...
Oct 15, 2015, 06:37 PM
Take a good look this time:
Oct 15, 2015, 06:27 PM
Did either of you look at the changes in fin behaviour vs viscosity in the example given? They are big changes, whereas the difference in water density is so misiscule that it is insignificant. Take...
Oct 15, 2015, 06:53 AM
Lol I'm too busy for that caper, and need to do lots of testing and investigation before I even apply it to my own boards.
Oct 15, 2015, 01:37 AM
That's for average salinity in 'salt' water.
Oct 14, 2015, 10:00 PM
The flow conditions are able to be analysed pretty closely as there are only a few variables involved.
The change in water density between 3 degrees C and 20 degrees C is only 0.2%. On a typical...
Oct 14, 2015, 04:43 AM
Serious question: don't you feel that you have let yourself down by constantly posting gross, boring, and repetitive so called jokes of the lowest possible kind?
Only seriously retarded types...
Oct 14, 2015, 04:39 AM
Think of it this way:
No one would be in the least surprised if someone started a discussion about the difference in performance between fin sets which are almost the same except for some heavily...
Oct 13, 2015, 11:32 PM
I'm planning to make some hand foiled versions in G10, everything takes longer than expected though. I'm not sure if there's a mathematical formula for that or if it's just one of life's mysteries.
Oct 13, 2015, 09:07 PM
There's a company in San Diego who can make a fin box which records lift and drag forces, price $14k.
Better to test foils on the hull while surfing if possible.
In the meantime the computer...
Oct 13, 2015, 07:57 PM
This isn't about fin flex but I'm not surprised.
There's no chance of that since i don't use FCS fins.
It's definitely the case that it makes a significant difference for some fins...
Oct 13, 2015, 07:51 PM
The thread title is a rhetorical question since it is indisputable that water temperature affects fin performance.
The question in the first post is not rhetorical though as I'm interested to know...
Oct 13, 2015, 07:34 PM
The polars for the foil used as an example here have been calculated using Xfoil.
Oct 13, 2015, 07:22 PM
That's not what i'm doing.
To be sure fin drag is only one part of the overall drag but it is significant.
The consequences are not just differences in lift/drag either... the...
Oct 13, 2015, 02:03 AM
You are 100% correct, most of them have been based on foil shapes since 1996.
Oct 13, 2015, 01:05 AM
That's a moral question, to which I don't know the answer. ;)
Oct 13, 2015, 12:49 AM
Physics old sport.
Oct 13, 2015, 12:48 AM
Not necessarily since one of the consequences could be fin spinout.
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