Get this!

Can't find the right forum, then post your general surf-related remarks here!

Moderators: Shari, collnarra, Butts, beach_defender, Forum Moderators

batoes
charger
Posts: 866
Joined: Wed Dec 22, 2010 8:40 pm

Re: Get this!

Post by batoes » Tue Jun 14, 2016 7:54 pm

saltman wrote:
MrMik wrote:Oh well, I'm going to make my own fins from now on. Roy told me he has stopped producing the printed polycarbonate fins.
That explains it .... the micro collapse of his business and my $90.
No hard feelings Roy ..hope the sun rises kindly on yours
Take care
That sucks - but truth told - so did the fin. I used it in my mlv and the board turned, but there was no drive. The fin was flimsy. Let's see if those comments bring him back here.

Did you pay by paypal? Because you can get that back usually.
Hatchnam wrote:
Filthy little hipster.

Drailed
Duke Status
Posts: 12508
Joined: Tue Aug 05, 2014 11:07 am

Re: Get this!

Post by Drailed » Tue Jun 14, 2016 7:55 pm

He posts on instagram occasionally...
Trev wrote:I have always had a lot of time for Dick
smnmntll wrote:Got one in the mouth once, that was pretty memorable

User avatar
Trev
Duke Status
Posts: 19489
Joined: Mon Feb 23, 2004 3:11 pm
Location: Any Point Break

Re: Get this!

Post by Trev » Tue Jun 14, 2016 7:58 pm

Pretty sure the fins were only a small part of his business.
I curse their head & all the hairs of their head; I curse their face, their brain, their mouth, their nose, their tongue, their teeth, their forehead, their shoulders, their breast, their heart, their stomach, their back, their womb, their arms, their legs, their hands, their feet & all their body, from the top of their head to the soles of their feet, before and behind, within and without

User avatar
saltman
Owl status
Posts: 3806
Joined: Tue Dec 13, 2005 4:52 pm
Location: a short walk up the beach

Re: Get this!

Post by saltman » Tue Jun 14, 2016 8:01 pm

I don't harbour malice to Roy

I did not find lack of drive an issue in my bonzer

But yes have touched on insty Facebook. Email and pm already over 6 months ago

He is a busy beaver
steve shearer wrote:
Wed Mar 21, 2018 3:04 pm
Loof is just projecting again, he's been eating his own semen since the age of 10.

User avatar
steve shearer
Huey's Right Hand
Posts: 22468
Joined: Mon Oct 13, 2008 8:20 pm

Re: Get this!

Post by steve shearer » Thu Jun 16, 2016 6:42 am

i really liked the fins.
I want Nightclub Dwight dead in his grave I want the nice-nice up in blazes

carvin marvin
Local
Posts: 742
Joined: Tue Mar 17, 2009 5:37 pm
Location: 1/2 way between the perineum and the scrotum

Re: Get this!

Post by carvin marvin » Thu Jun 16, 2016 12:16 pm

The bumpy leading edge has more surface area than a fin with no bumps, therefore more drag.
Think corrugated iron, when it comes off the roll it's much wider.

Beerfan
Snowy McAllister
Posts: 8344
Joined: Mon Jan 30, 2006 3:09 pm

Re: Get this!

Post by Beerfan » Thu Jun 16, 2016 12:39 pm

You'll definately get he back in here talking about drag lol.
we are the angry mob
We read the papers everyday
We like who we like, we hate who we hate
But we're also easily swayed

User avatar
steve shearer
Huey's Right Hand
Posts: 22468
Joined: Mon Oct 13, 2008 8:20 pm

Re: Get this!

Post by steve shearer » Thu Jun 16, 2016 1:00 pm

there's more to drag than surface area in hydrodynamics.

the fins definitely felt drag "free"
I want Nightclub Dwight dead in his grave I want the nice-nice up in blazes

User avatar
MrMik
regular
Posts: 357
Joined: Wed Jul 18, 2012 7:24 pm

Re: Get this!

Post by MrMik » Fri Mar 23, 2018 4:26 pm

MrMik wrote:
Mon Jun 13, 2016 8:06 pm
Oh well, I'm going to make my own fins from now on. Roy told me he has stopped producing the printed polycarbonate fins.
Here we are, 21 months later, and I have developed and produced a fin. I call it the GullWhale fin:
GullWhale-7-S-11mm.png
The ride reports are extremely encouraging.
GullWhale-7-S-11mm2.png
I have made a few different versions and tried out a wide range of ways to make them. About 7 surfers have surfed these fins and only one has snapped off in the last 6 months or so of testing. I have since then improved the manufacturing process and I think the fins are much stronger now.
I think the fins are mature enough to start sending a few more out for testing by more surfers.

Steve, would you like to try one out?
Resin-filling-fins.png
Resin-filling-fins.png (89.11 KiB) Viewed 790 times
Attachments
GullWhale-7-S-11mm3.jpg
GullWhale-7-S-11mm3.jpg (34.36 KiB) Viewed 790 times

channels
Owl status
Posts: 3638
Joined: Mon May 10, 2004 4:36 pm
Location: Northen Beaches

Re: Get this!

Post by channels » Fri Mar 23, 2018 6:04 pm

How big are they? How do they improve on existing templates?

User avatar
MrMik
regular
Posts: 357
Joined: Wed Jul 18, 2012 7:24 pm

Re: Get this!

Post by MrMik » Fri Mar 23, 2018 6:31 pm

channels wrote:
Fri Mar 23, 2018 6:04 pm
How big are they? How do they improve on existing templates?
194cm^2 area
Depth 250mm

Main improvements: Very high aspect ratio but 'Curviness' everywhere.
Designed using finFoil https://finfoil.io/ until it looks most pleasing to my eyes (which is a long and slow process).

It results in very high lift to drag ratio and an exceptionally forgiving nature.

Picture shows a yellow GullWhale fin and a red HARFTUB-7 in relation to an 8ft board. The HARFTUB fin is 11mm shorter and has practically the same area (193.45mm^2).
Attachments
A-couple.jpg

User avatar
MrMik
regular
Posts: 357
Joined: Wed Jul 18, 2012 7:24 pm

Re: Get this!

Post by MrMik » Fri Mar 23, 2018 6:52 pm

I have experimented with basically 4 outlines and then permutated them through multiple different foils, thicknesses, thickness distributions, and different numbers of tubercles.

For each of the sea-worthy fins in the photo there were multiple precursors that never made it anywhere near the ocean.
Attachments
Selection-fins-scaled.jpg
Selection-fins-scaled.jpg (21.3 KiB) Viewed 755 times

Beanpole
Huey's Right Hand
Posts: 30238
Joined: Mon Apr 25, 2005 8:21 am
Location: Counting fins

Re: Get this!

Post by Beanpole » Fri Mar 23, 2018 8:39 pm

Definitely make a McCoy go better. You can use it to cut lettuce without it going brown too.
Last edited by Beanpole on Fri Mar 23, 2018 8:40 pm, edited 1 time in total.

ctd
barnacle
Posts: 1489
Joined: Wed Nov 07, 2007 9:49 pm

Re: Get this!

Post by ctd » Fri Mar 23, 2018 8:39 pm

How did you test them - just stick them on a board and surf?

User avatar
The Mighty Sunbird
Snowy McAllister
Posts: 9816
Joined: Thu May 03, 2007 12:43 pm
Location: Pogo's

Re: Get this!

Post by The Mighty Sunbird » Fri Mar 23, 2018 8:50 pm

And why did you put it in backwards?
Erase.

User avatar
MrMik
regular
Posts: 357
Joined: Wed Jul 18, 2012 7:24 pm

Re: Get this!

Post by MrMik » Fri Mar 23, 2018 9:29 pm

ctd wrote:
Fri Mar 23, 2018 8:39 pm
How did you test them - just stick them on a board and surf?
I surfed them myself, but that is only good for basic strength testing. I don't surf well enough to be quite certain which fin is better than another, if both fins are good fins. It turns out that none of the fins I surfed myself were actually duds, not surprising considering that I started with well proven designs, and then made them better. I can tell if there is nothing much wrong with a fin if I surf it, but I cannot tell if it is a whole lot better than a good fin.

I mucked around with copying other fins by making silicone moulds, then filling them with resin, and I snapped off a good number of them myself. I was almost getting the hang of finless surfing in the process...

Once I was able to make fins that don't snap in a hurry, I started to hand them on to better surfers to try them out, and they like the fins a lot.

The main 'test pilot' has been and still is 'wrcsixeight' on Swaylocks. He has been surfing the same 2 self made hollow wooden boards for many years, including self-made fins and bought fins, and he is able to tell exactly what kind of fin is in his board and how it performs in what part of the wave. He is a skilled craftsman and was able to repair my fins when they broke often in the early days of testing. He was pretty much blown away by how much better the fins perform compared to traditional raked fins, and has spent many hours repairing the fins, usually because the tab for the screw plate snapped off, or the roll pin broke off the fin tab. None of the fins ever snapped off while he was surfing them. A lot of the development process and surf-testing has been described in https://www.swaylocks.com/forums/3d-pri ... board-fins , but much more was and is happening in email conversations.

Post Reply

Who is online

Users browsing this forum: No registered users and 22 guests