Kalevi forum posts in last 60 days

There is actually a video showing how the KT board is manufactured, presumably at the Cobra factory. The construction is slightly different from Sonic’s SCC, but the basic idea is similar: a hollow construction without honeycomb.

Pacoo said..
I have not seen a hollow board surviving more than a couple months over here, in my case not even one month.
I have seen people opening valves and release like half a litre of water in a new board. I heard about issues with the gore tech, the changes in temperate, lack of impact resistance, etc.
Do they work better? Yes, but I would ask for the warranty conditions.
Mine was replaced under warranty.

Which boards or constructions are you talking about? My hollow Air Inside Superfly has now survived two seasons and 3,000 km with a Gore plug. No leaks, no weird dings, etc. Nowadays, I remove the plug when the board is not in use. I’m in Finland, so the conditions are fairly cold, ranging from a few degrees below freezing to just under 30°C during summer heatwaves.

I’ve now ridden about 3,000 km / 1,860 miles on my Airinside Superfly 72L, 3.8 kg — both wave riding and with a race foil.

I don’t think I’ll be buying foam-core boards anymore. Everything is better with a hollow board — at least with this one.

You can already get hollow boards for around €1,500–1,750 (roughly $1,700–2,000), and I’m sure the prices will keep coming down.

I’ve also crashed and repaired this board, and even that was easier than repairing a foam-core board.

For me, the biggest advantages are the easy takeoff, the responsiveness in the air, which allows you to use a smaller foil and keep the foil flying closer to the surface when riding waves, allowing for more speed, and the repairability, since the board doesn’t absorb water.

Faff said..

Kalevi said..
I’ve now ridden about 3,000 km / 1,860 miles on my Airinside Superfly 72L, 3.8 kg — both wave riding and with a race foil.

I don’t think I’ll be buying foam-core boards anymore. Everything is better with a hollow board — at least with this one.

You can already get hollow boards for around €1,500–1,750 (roughly $1,700–2,000), and I’m sure the prices will keep coming down.

I’ve also crashed and repaired this board, and even that was easier than repairing a foam-core board.

For me, the biggest advantages are the easy takeoff, the responsiveness in the air, which allows you to use a smaller foil and keep the foil flying closer to the surface when riding waves, allowing for more speed, and the repairability, since the board doesn’t absorb water.

But if it cracks, won't it just fill up with water immediately?

In a freerace crash, the wing boom hit the nose of the board and caused about a 5-inch crack. However, it didn’t leak because this board has a honeycomb construction.

In another crash, I fell backwards onto the board, and the board-leash hook on my back crushed the footstrap track inward, causing a slow leak. I only noticed it once I got back to shore and could hear water sloshing inside. With an EPS board, I probably wouldn’t have noticed until the EPS foam had absorbed water, the board had gained weight, and/or bubbles or other signs of a leak started appearing.