Soft edge

What works and what doesn't. Share design ideas, references and contacts for paipo board builders.
CHRISPI
Big Wave Charger
Posts: 301
Joined: Sun Dec 28, 2014 2:48 pm
City: Durban
State or Province: Natals
Country: South Africa

Soft edge

Unread post by CHRISPI » Mon Nov 18, 2019 10:46 am

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

GeoffreyLevens
Big Wave Charger
Posts: 357
Joined: Sat Sep 17, 2011 9:58 am
City: Paonia
State or Province: Colorado
Country: USA
Location: Paonia, Colorado
Contact:

Re: Soft edge

Unread post by GeoffreyLevens » Mon Nov 18, 2019 10:56 am

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

CHRISPI
Big Wave Charger
Posts: 301
Joined: Sun Dec 28, 2014 2:48 pm
City: Durban
State or Province: Natals
Country: South Africa

Re: Soft edge

Unread post by CHRISPI » Mon Nov 18, 2019 2:56 pm

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?

GeoffreyLevens
Big Wave Charger
Posts: 357
Joined: Sat Sep 17, 2011 9:58 am
City: Paonia
State or Province: Colorado
Country: USA
Location: Paonia, Colorado
Contact:

Re: Soft edge

Unread post by GeoffreyLevens » Mon Nov 18, 2019 3:27 pm

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.

User avatar
krusher74
Big Wave Charger
Posts: 774
Joined: Wed Nov 07, 2012 3:53 pm
City: easkey
State or Province: co sligo
Country: Ireland
Interests: Surfing, vintage cars and motorbikes
Location: Easky, Co sligo , ireland
Contact:

Re: Soft edge

Unread post by krusher74 » Mon Dec 09, 2019 8:38 am

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.

Post Reply

Who is online

Users browsing this forum: No registered users and 2 guests