Search found 279 matches

by carvin marvin
Wed Jul 26, 2017 12:27 pm
Forum: General surf discussion
Topic: J-Bay Pro 2017
Replies: 257
Views: 17930

Re: J-Bay Pro 2017

Thanks Nick, Hey real pity that did not give us a result either way (as we really could do with some clear evidence that SS makes any difference) but have to say fitting a surfboard unit to the hull of a ski is just basically a waste of time because the obvious happened. Not rocket science that one...
by carvin marvin
Wed Jul 26, 2017 6:53 am
Forum: Shortboarders only!
Topic: Modern Planing hulls
Replies: 61
Views: 5180

Re: Modern Planing hulls

Excuse my ignorance gents, but what defines a "modern planing hull"? Dummy's version Design wise, flatter rocker. Feel wise, the skatey, faster, up on top of the water, feel of the flatter rocker. Observed one being surfed really well at a mid north coast point break, and the only negative was the ...
by carvin marvin
Wed Jul 26, 2017 6:38 am
Forum: Shortboarders only!
Topic: Modern Planing hulls
Replies: 61
Views: 5180

Re: Modern Planing hulls

It's funny. Everytime I think about getting a short (as it sub 6'0) shortboard model, the surf pumps (this arvo at the point was the best I've seen for years. 3-5Ft 16secs south swell barrels), and I realise what a shit paddler I am and how I rely on volume and length to get in. Only made a few dro...
by carvin marvin
Sat Jul 22, 2017 12:58 pm
Forum: Logs, eggs and alternatives
Topic: Midlengths
Replies: 1457
Views: 145142

Re: Midlengths

Recently checked out one of Bert Burgers design talks. His perspective on volume is at the other end of the volume spectrum . His number is .33 litres per kg of body weight and this number relates more to surface area than volume. He's a big bloke and he mentions he was riding a board 23'' wide and ...
by carvin marvin
Fri Jul 21, 2017 7:06 am
Forum: Logs, eggs and alternatives
Topic: Midlengths
Replies: 1457
Views: 145142

Re: Midlengths

Looking at this - just not certain. its an MC Islander 6'10 x 22 3/4 x 3 1/4 (wide!). Single concave as well, although not sure how deep. 5 fin set up. Seems like almost a 'big boy shortboard' (I'm not particularly big) or maybe something close to a Firewire Addvance (with a narrower nose) or a V-s...
by carvin marvin
Fri Jul 07, 2017 11:03 am
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

This is worth checking out, plenty of food for thought, so many possible ways of wave shaping.
https://www.youtube.com/watch?v=trjFzfYcHCQ
by carvin marvin
Sun Jul 02, 2017 8:05 am
Forum: General surf discussion
Topic: SURF VIDEOS
Replies: 61
Views: 9980

Re: SURF VIDEOS

Tasteful artistic drone footage of the mid north coast surfing landscape.
https://www.youtube.com/watch?v=9Tkac_64jY8
by carvin marvin
Thu Jun 22, 2017 1:30 pm
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Alakaboo wrote. The energy and the swell are one and the same. They can't be at tangents to each other. I appreciate the reply and especially this insight. My theory was based on trying to understand where the energy of the diminishing length of swell between the orange line and the break wall goes....
by carvin marvin
Tue Jun 20, 2017 4:37 pm
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Here are my observations of how Illuka break wall works. You have bland typical closeout bathymetry running from the breakwall along the beach. The black bathymetric lines in the diagram show the beach depth 1 metre, 2metres , 3 metres and 4 metres. http://i602.photobucket.com/albums/tt110/kenipini4...
by carvin marvin
Tue Jun 20, 2017 2:52 pm
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Here is my attempt at trying to explain sand slug swell tapering. The key to understanding how a sand slug works is to visualise energy moving at an angle in the swell line. It is easier to explain with a diagram. This diagram shows the wave breaking zone between the shore and the black line. It als...
by carvin marvin
Tue Jun 20, 2017 8:35 am
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

http://www.coastalwatch.com/surfing/217 ... st-beaches


It looks like the sand dredging boat can piss the sand about 120 metres.

If you look closely you can read the boats name.

"The Golden Sand Shower''.
by carvin marvin
Sun Jun 18, 2017 6:09 pm
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

I would like to see the Gold Coast engineers build a permanent sand slug using sand filled geotextile bags. A swell that has travelled over a sand slug gets transformed into a tapered swell. A tapered swell might be say 5ft one end and 3ft the other end. A tapered swell then breaks as a peeling wave...
by carvin marvin
Fri Jun 16, 2017 2:59 pm
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Creating an underwater valley {yellow line} off a beach out past where the waves break, running west to east will create peaks either side, in other words you can create a surf break by removing sand and dump the sand elsewhere to create another surf break. http://i602.photobucket.com/albums/tt110/k...
by carvin marvin
Fri Jun 16, 2017 7:48 am
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Thanks for the info.
Fantastic news that they are going to complete the Narrowneck reef and use sand filled geotextile bags which will be more permanent than pumped sand.
by carvin marvin
Fri Jun 16, 2017 7:21 am
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

Why not finish the Narrowneck reef, there is a sandbag foundation already there. The reason they could not make it shallow enough was because the Mcquade dredge is a bottom dumper and cannot work/open up/move away in shallow water. With the 'rainbowing' sand pumping technique they are using this tim...
by carvin marvin
Fri Jun 16, 2017 7:07 am
Forum: General surf discussion
Topic: Shearer. Boo. Come in here
Replies: 67
Views: 7976

Re: Shearer. Boo. Come in here

alakaboo wrote:
Thu Jun 15, 2017 7:16 pm


It's a temporary sand plug, but on a much larger scale than the experiment at Cronulla.

Is there someone on the team who understands the theory behind Andrew Pitts offshore sand slug.
by carvin marvin
Sat May 27, 2017 8:38 am
Forum: Board Design, Repairing, Shaping, etc (was called Equipment)
Topic: Epoxy longboard repair
Replies: 5
Views: 763

Re: Epoxy longboard repair

Ended up finding a similar (surfboard warehouse) board on the bumtree for similar dollars. I'll just start again and know never to leave it on the roof between OCT-MAR. Or to be on the safe side put in one of those goretex vent plugs that allow expanding hot air to release but don't let water in. T...
by carvin marvin
Mon May 22, 2017 8:30 pm
Forum: Travel & Health
Topic: Flexibility
Replies: 6
Views: 1097

Re: Flexibility

This spinal appeasing exercise works on any tightness in the lower back.
https://www.youtube.com/watch?v=B8eTYU4bjFg