Page 1 of 1

Soft edge

Posted: Mon Nov 18, 2019 10:46 am
by CHRISPI
IMG_20191105_125753.jpg
I have been experimenting with vinyl wrap on my latest boards , and found with layering clear vinyl makes a perfect trailing edge profile finishing with a razor thin soft edge ,stiffness can be added or subtracted with more or less layers .I have read a lot about vortex generation with soft trailing edges on insect wings and fish fins . How important is the trailing edge on the overall performance of a foil, fin, wing, prone board? On my boards it’s probably very important with the fin tips in the water all the time.
IMG_20191105_125806.jpg
IMG_20191105_125824.jpg

Re: Soft edge

Posted: Mon Nov 18, 2019 10:56 am
by GeoffreyLevens
I know with hard fins on standup boards, tiny differences in trailing edge foil can make the difference between a loud "hummmm" and not. And almost certainly that hum is lost speed, drag of a detrimental type

Re: Soft edge

Posted: Mon Nov 18, 2019 2:56 pm
by CHRISPI
The trouble with performance experiments and trying different approaches is it creates more questions than answers, and the old question is how you measure it. I feel wave gardens might be the answer, it something you can budget for and get guaranteed constant size waves so you can set a base line for testing. You can budget for a surf trip but not get consistent waves. I am privileged to be able to make use and experiment with wave riding tools, I feel making your own boards and riding then has got to be good for mind and body?

Re: Soft edge

Posted: Mon Nov 18, 2019 3:27 pm
by GeoffreyLevens
CHRISPI wrote:
Mon Nov 18, 2019 2:56 pm
I feel making your own boards and riding then has got to be good for mind and body?
Very likely will help stave off senility over the years ;) And yes, if you can get to a facility that has constant almost identical waves peeling off from a machine, that's ideal.

Re: Soft edge

Posted: Mon Dec 09, 2019 8:38 am
by krusher74
Well, you have a testing ground down in Bristol at the wave. no too far for a road trip.

I would not recommend surf Snowdonia in wales as the wave there was less like a normal ocean wave.

Re: Soft edge

Posted: Fri Jan 03, 2020 9:08 am
by Worrall
Did they make the wave at Snowdonia like that deliberately btw?

Re: Soft edge

Posted: Tue Apr 14, 2020 1:15 pm
by krusher74
Worrall wrote:
Fri Jan 03, 2020 9:08 am
Did they make the wave at Snowdonia like that deliberately btw?
no, I feel its just a sub-optimum designed bottom profile, that is floored due to trying to make a wave that can be used by more than one person at a time. There is the main wave which I feel is sub-optimum dut to there attempt to also make an intermediate wave from the same piece of swell. Their technology is the same as kellys wave pool, which works due to a bottom profile design for one wave only