Facebook posts: Ian Anderson

What works and what doesn't. Share design ideas, references and contacts for paipo board builders.
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Facebook posts: Ian Anderson

#1

Unread post by bgreen »

2 November 2023

https://www.facebook.com/groups/paipobe ... 999110080/
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Ian Anderson
yes, its goes against the grain...but I would be happy to show any plywood afficienados the DIY way. That plypo has been gathering dust for about 3 years now but it has been surfed, as you know Bob, I was distracted. BTW 'torturing' makes me sound like the Marquis de Sade of plywood bellyboards. I will email you later re some structural ?'s

Doc Robertson
Looks good.How is it in the water?


Ian Anderson
this is a smaller pocket paipo made in 2019 in a collaboration with Paul Joske, its made with 3mm coachwood ply x2 and coated with West epoxy. I just gave him general instructions and helped with the vacuum process and drank all his coffee. The pic dont do the board enough justice, a mini wall hanger.
Anderson2Nov23b.jpg

Stu Marshall
Hi Ian that looks great, did you cut a curved v in the nose then stitch and glue?
Cheers Stu.

Ian Anderson
I cut a vee section out of the nose then stitch with 3 or 4 cable ties, this is the 'torture' process that shapes the board. The joint is then tacked with epoxy glue.

Stu Marshall
Ian Anderson That’s great I thought that was how you had done it, in the past they used fishingline or wire then just glasses over.
This is the ultimate source I presume you know of it
Somewhere in there is the same board as yours I think it’s Australian but less informed and more primitive.
http://mypaipoboards.org/
It’s an amazing site.
It takes loads of time to go through so much information.

Ian Anderson
I think the board you are talking about is on Bob Green's website but it may be on the paipo website. That board was made by the Vidler Bros in WA? What got my cogs whirring was an image of a 'pram' dinghy where the method had been used and that prompted me to backtrack looking for the Vidler board. The law of associative memory. Then it was R&D in the shed. Its the tension/compression dynamics that shapes the board and keeps all the lines accurate.


3 December 2023
https://www.facebook.com/groups/paipobe ... 939430080/
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Ian Anderson
Sean Ross knows where and when to stick an edge, if you grew up surfing single fins in the 70's it will help. A lot of folk who were raised on multi finned boards haven't learnt how to stick a full rail edge turn off the bottom, ie they rely on the lateral fins instead. There is no right or wrong here, just a myriad of approaches. The wave is the thing😃 BTW waterskiing on a single can also teach you much about holding an edge and ice skating takes it to another level.

John Morris
I sometimes side slip in hollow hectic conditions even with good size multi fins. I think it would require a pretty big single fin to provide equivalent hold. I grew up on single fins so know the feeling.

Ian Anderson
the 'knowing' how to do a solid rail turn also sets you up for understanding how you ride a finless BB. The pic that Bob posted of Sean Ross shows the board being effectively turned into a giant keel fin, he has stuck that edge into the wave at the critical moment and if you miss time that you end up sliding out onto the flats and vulnerable to what comes next. Its also paradoxical that the greater the velocity the less fin size required, the simplest evidence is the relative wingspans of WW1 biplanes and modern jet fighters.


6 December 2023
https://www.facebook.com/groups/paipobe ... 605040080/
Anderson6Dec23.jpg
Harvey McClendon
Holy sh8t...

David Guy
A little shorter at 3’ 9”. Fastest board (of any length) that I’ve ridden in 60 years.
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Ian Anderson
yep! that's a serious concave too! my only criticism from my experience of riding deep concaves is they are not great paddlers but when you take off on a wave they feel like they 'release' very early. UFO's. Would love to see some more pics of your BB sometime.

David Guy
Yep. Given the length and thickness, it can be difficult to get going, particularly on fuller waves. Steep, sucky waves and late takeoffs are the go with this board, but you can takeoff way inside and it goes like a rocket.
Guy6DEc23-2.jpg

Ian Anderson
OK, i know this label, Bob Green knows the guy well, I was going to get a shape from Einstein several years back but got distracted by another toy.. a regret.

David Guy
Yeah, I got to know Bob through John. This board was a bit of a combined effort of John and I and sadly was the last one.

David Guy
Several years ago Bob wrote an article for the Pacific Longboarder and included photos of two of John’s boards. They were mine and my wife’s previous boards. My wife did the artwork for her board.

Ian Anderson
ah, the ubiquitous Dr Bob! Guessing your BB is a keeper then. Are you around Bawley?, I spent 4 months there in 97 mainly surfing what I knew as Racecourse just south. Mechanical little rights back into the corner and then the rip which dropped you off out the back. Brush Island nearby. Jigged a lot of squid. But the water was too cold for me, grew up on the far north coast 🙂

David Guy
Ian Anderson I spend a lot of time around Bawley area and surfed just about every break in the area. The break you mentioned is Racecourse Beach, but known as Sandmines. I must admit that my favourite breach is Tea Trees at Noosa.

Kneeon Kneeboards
Show us some more pictures mate

Ian Anderson
i have more but i can put you onto the shaper via PM. He is retired now but always happy to knowledge and insights
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Bob Green
The article can be found here: http://mypaipoboards.org/mags/magazines.shtml Scroll down to - Pacific Longboarder Magazine . Tom Wegener had an article in the same issue.
Paipos in the Media: Magazine Articles and Advertisements


John Kovar interview: https://mypaipoboards.org/.../JohnKovar_2010-1211.shtml

John Morris
good read. Wondering if anyone else has noticed damage to the ribs from taking big drops prone? I've got ~3/8" deck padding on my current boards. I do air drop occasionally but never felt the impact.

Rod Rodgers
yup, sure have. I have deck padding on one board -- to much weight for me and I have since gone to GryptaLite for the boards I regularly ride. For the spot I surf in Costa Rica, I bought lacross rib protectors that I wear whenever it gets 6 ft or more, after making a nasty landing on my board. Bruise or crack, not sure which, but I didn't surf my last 3 days after that and certain things were difficult to do. Luckily I didn't miss much as it was the last three days. The rib protectors did the job 🙂

John Morris
Rod, interesting. I also have 4 or 5 mil neoprene on my chest.

Bob Green
Not so much my front ribs, but a tube collapsed on me in Indonesia and this injured my ribs/back, as I was face planted on my board, which also pushed my body flat to the board (my elbow was previously supporting my body).

John Morris
You two are charging. This sounds even more hazardous on boards the length I'm riding. I have had a lip thump me in the lower back after I straightened out before. It hurt, so I don't straighten out these days. These curvy, short, deep concave boards look interesting.

Bob Green
or wrong place, wrong time

Ian Anderson
the beauty of neutral bouyancy boards is that you can avoid this issue most of the time by punching below the surface. GG employed this method, i think you see it a bit in Crystal Voyager. A board that has positive bouyancy offers too much resistance, its always a plus or minus game. Those curvy deep concaves are designed for charging.

Rod Rodgers
neutral buoyancy would end up being a pile driver into the lava reef which is a very scary thought. The place I go to isn't one that I think about duck diving very often... other techniques are employed when paddling out. A better option would be riding a surf mat, but just don't lose it when the strong offshore are blowing. It would be a long swim in!

Ian Anderson
then i guess its about technique, timing and knowing the place your surfing. body surfers and shortboard standup surfers use the same trick, the aim is not to punch to deeply and get under the waves energy and out the back, i learnt it during a misspent childhood bodysurfing and adapted this to boards. If its bigger than 6' to 8' then its a different game altogether.

Bob Green
Some footage of John: https://www.youtube.com/watch?v=_hX2-XvQB7s

David Guy
Hi Bob, I hope you are well. I’m in that video, for about half a second. I’m now recovered from my shoulder reconstruction, but now need a knee replacement in the new year. Hopefully will be good to go by the time I get to Noosa in July.

Bob Green
Gday David. I saw your post when I was about ask how your shoulder was going. I do a regular program to keep me in the water, seems to work ok. I haven't been to Noosa since I saw you. You'll be a bionic man soon. Somewhere there was a wave you caught. It was a pretty small wave from memory. If I get a chance I'll see if I can find it.

David Guy
I’m hoping the knee replacement will work because I’m in constant pain at present. Don’t worry about looking through the video, from memory I only caught a couple of rubbish waves that were filmed. I actually remember catching one quite good wave, taking off just as Dianne stopped filming.

Bob Green
I'm sorry to hear your knee is causing you so much pain, knee surgery is done all the time so hopefully it fixes things for you. That's usually the way with filming.

David Guy
I have a couple of friends who have had very successful knee replacements, so hoping for the best.

Ian Anderson
another hard downrailer quad version for multi fin fans
Anderson6Dec23d.jpg
Bob Green
Here's one for the scientist types (keep reading): https://forum.swaylocks.com/t/surfboard ... y/36559/65

Ian Anderson
Bob Green my brain hurts!

Bob Green
77 pages. I heard from John, I'll e-mail you later, your brain will hurt even more.

https://www.youtube.com/watch?v=yryf2VDB_Mg - some more from John Kovar


23 December 2023
https://www.facebook.com/groups/paipobe ... 806395080/

anyone else done any BB stickmen artwork? love to see it.
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Last edited by bgreen on Mon Aug 19, 2024 5:43 am, edited 2 times in total.
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Re: Facebook posts: Ian Anderson

#2

Unread post by bgreen »

24 February 2024

https://www.facebook.com/groups/paipobe ... 412810080/
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Last edited by bgreen on Mon Aug 19, 2024 5:59 am, edited 2 times in total.
User avatar
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Re: Facebook posts: Ian Anderson

#3

Unread post by bgreen »

13 December 2023

https://www.facebook.com/groups/paipobe ... 009725080/
Andersdon13Dec23.jpg
19 December 2023
https://www.facebook.com/groups/paipobe ... 655295080/
Anderson19Dec23.jpg

John Morris
I sometimes get knocked off my paipo and ride alongside until I can crawl back on.

Ian Anderson
John Morris

Xavier Breteau
too!

John Morris
My board(s) are around 60" by 21" by 2 3/8". When it gets hectic I sometimes shift my weight back but then feel like I lose some drive and maneuverability. Keeping my weight forward allows me to better engage the rail and drive, but my flippers can get pulled down the face somehow, pulling my lower body off the board. My decks are concave, which I think helps to keep me connected. Sticking with boards of similar dimensions I'm looking for remedies.

Ian Anderson
i rarely pay attention as to what is happening with my legs and more focused on threading the line. This year I have mainly proned on a 6'1'' standup board using a Horan/Lexcen Starfin and leaving my flippers/fins in the car. Can you paddle OK? I have been fattening my boards (except the neutral bouyancy plywood BB) for the last 15 years and 3'' is my standard thickness today, and you can still duckdive these tubby's after a bit of practice and you need volume to keep pace with the youths. I think 21''is a good width, how wide is your planshape 12'' up from the tail and at the tail?

Roger Harrell
me too

Ian Anderson
this is the board 40''x22''x1''
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(13.19 KiB) Not downloaded yet
a narrow version of the HPD
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Ken Cullings
The wave here in Ventura is good for that, when it's big. Lots of face to play on.

Bob Green
An older photo, on the takeoff. I find my legs weigh and unweigh, without thought being given to it.

Ian Anderson
sometimes it feels like your legs are just joyriders, occasionally lending a 'hand'

John Morris
with a longer board lifting one foot or the other results in downward pressure through the thigh and knee, sinking the corresponding rail.

Bob Green
Yep, that's what I mean by unweighing.

John Morris
still figuring things out here. Not only do I have no photo of me riding, I never see anyone on a foam and fiberglass prone board. So I have to go by feel. When climbing and dropping on a face the 'unweighting' technique you mention works great. For a cut back beyond 90 degrees I need to use my arms to help bring it around, but it never feels as clean.


Gary Sharp Danang
Dropping down the face that sometimes happens.. definately still riding the board though.. not the wave

Doc Robertson
Hence the not so popular (read) cool name....bellyboard

Ian Anderson
Doc Robertson i grew up with 'bellyboard' as standard vernacular, paipo came decades later and I am happier with BB as a term in my KookBook 😀

Tom Newton
Or a fairly steep drop. Pushing the board down and in the right direction getting the rail to hold and away you go. Can help to avoid the front inside rail from "digging" in.

Elijah Baley
When riding my mini paipo board, my body is not on the board at all. It still works, just slower.

Ian Anderson
same experience when riding 24''x14'' pocket paipo. still faster than a handplane/bodysurfing

Elijah Baley
Agreed. The only downside to me is that you need good waves with a pocket, then it is the best prone/bodysurfing mix.


Stephen Newbegin
Interesting this topic is coming up. I do not believe in disengaging my belly except in an extreme situation. To me since moving from Kneeboarding to Bellyboarding my duck feet have been not only to power into waves(along with webbed gloves) but my belly being the focal point for balance and fiberglass board fins underneath it, my arms being the controller of my turns and my swim fins(gloves) engaging or not engaging as a boost or assist in turns. It is this different type of paipo riding performance that is changing everything I assumed to be true in surfboard and materials design. I really need to get somebody to video what this is looking like.

Don Boland
Hi Stephen I read the interview with with Michael Drury his shaper(John Bradbury ) told him when designing a board for him all the things like “rails,bottom shape,rocker etc all work “.
My experience so far is that the way those design features are blended is the key to improving performance as stated by your self it gets down to “Physics”
Between Damian and myself we have had 10 boards and lots of fins ,some of the boards are PU and some are Epoxy
I also agree with you re the way the board is controlled and the name”Bellyboard” is an accurate description.Looking forward to seeing more of your thoughts on design and any suggestions that you might impart

Rob Beling
Frequently in steep waves and sections on my HPD. As Sean Ross said “it’s a body surfing board!” It’s all extra drag I guess but prevents me sliding too far down the face on tubing wave. Can’t say I’ve got it fully wired yet but then where’s the fun in that! 🤣 Great looking wave and positioning! Board looks very interesting too!

8 February 2024

https://www.facebook.com/groups/paipobe ... 597355080/
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Mike Buffalry

Having a little difficulty deciphering your explanation, sorry. But is this a hollow core, ribs and stringers, construction? Of it is or is not the finished board looks great, nice work.

Ian Anderson
Hi Mike, no its a solid ply BB approx 10mm thick, i use 3 individual sheets of 3mm x 3ply, each sheet is 'shaped' with the vee nose using stitch and glue method from boat building. The 3 sheets are then glued up in a vacuum bag. The rail bands of veneer were applied to cover the plywood edges, more for appearance than any actual function.

Mike Buffalry
thanks Ian, some nice craftsmanship!


19 February 2024

https://www.facebook.com/groups/paipobe ... 409220080/
Anderson19Feb24.jpg

Mike Jax
NACA = 🙌🏾

Bill Wurts
The Spifire wing used the asymmetric NACA 2200 foil profile series — 2213 at the root and 2206 at the tip. I’m assuming you used a symmetric NACA profile with the semi-elliptical Spitfire wing planshape.

Ian Anderson
Hi Bill, i will have to 'stay in my lane' when it comes to the physics side of things, the yellow spitfire wing is a cut down Horan Lexcen Starfin that was broken, the foil was laboriously wet rubbed by me, the NACA foiled fin was designed by Peter Killen and he could wax on at length about this... he has a phd in applied maths/fluid mechanics and he built maybe the worlds first functional model flow rider standing wave as part of this thesis at Australian National University back in 1975...his work was also published in Fluid Mechanics mag back in the day... Peter can talk the numbers/chords ad infinitum, I just like the 'feel' of these type of fins for relaxed 'point and shoot' surfing. I have an article on Peter's work that was published in Tracks mag back in 76, will find it and post it later. Lately he has been 3D printing some NACA fins and has given me a few but I prefer to make fibreglass ones in the mould..

Bill Wurts
Very interesting. I’d enjoy seeing that ‘76 article. I played with an elliptical fin planshape (with symmetric NACA foil profile) for a brief bit and NACA surfboard rail edge profiles before I started playing with finless hulls.

I’m convinced Dick Brewer used NACA leading edge profiles for his surfboard rail designs.

Ian Anderson
Found it! Likely to be a bit hard to read, good luck.

Stephen Newbegin
Like this type of discussion. Talking to my adult son who has been 3D printing plastics for awhile with my grandson making all kinds of exotic stuff says the plastics are not up to the abuse yet of UV and physical abuse as well as flex on regular 3D machines and the industrial ones are big bucks and still not there. So my focus with fins has been on manufactured fins that are fiberglass. On my next prone board I am stealing some bamboo fins from a short kid's surfboard I have to test out for prone use. They have more flex than fiberglass but really strong. However they are so low drag but are like scary knives. My new board it will allow them to be out of the way of leash and my body. On the surfboard they were very sensitive and responsive(unstable) to the average surfer but in a prone board that requires far less toe-in this might be very interesting. Again, I got a lot of testing ahead but curious about any physics discussed here.


Nick Hartigan
Eeerrrrrr um Cheyne Horan 🤔

Ian Anderson
Cheyne gets a mention in the thread, Ben Lexcen was the chap responsible for the design of the Starfin. The NACA aerofoil is a very different foil to the Starfin. The NACA fin is also a Spitfire wing plan shape but flipped/reversed. I am a big fan of the Starfin having used them on different boards since about 1985... still have two. A lot of folk don't like them but if you watch footage of Cheyne surfing Bells in 1984 its obvious that the fin works very well.

Nick Hartigan
Cheyne was riding these style of fins a few years a go now in thrust & quad set up

Ian Anderson
Nick Hartigan I can check with PK but the NACA fin mould was made about 30 yrs ago. It doesn't predate the Starfin around 82/83? Legropes were the natural enemy of the Starfin. Have seen CH's tri and quad spitfire fins.. v. interesting.
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