From my understanding, the cirrus is a: lighter than the foam core, and b: more rigid, therefore when you hit the wake the board doesn't flex thus giving more pop. Thats my story and I'm sticking to it, but then again I could be wrong
not sure what it really means but it says this new cirrus core makes the boards lighter and snappier..in snappier i think they mean a bit more flex like the wood cores where the flex causes a release of energy after the pop to drive the board up a bit more ..i guess that would mean absorbing more energy on landings which would mean softer landings..
oh well i could be wrong but thats what i take form all this new fangled cores
well my belmont has .7 fins and they look a lot smaller than those. maybe it's just the pic. the belmont comes with 1.1 fins in the center that i take out, and there's a pretty sizeable difference between those and the .7s.
The fins on the 141 are 1.1" The fins on the smaller boards 136, 131, are .95"
The Cirrus core is OíBrienís answer to the competitions lightweight wood core boards. It's some kind of crazy aero-space material that is actually machined out of a block of the stuff.
The big advantage I see is the reduced weight and the fact that it is a closed cell material that won't soak up water if it is exposed to it, unlike wood core boards.
The Demented I rode last fall was not a Cirrus core board, but it landed softer then any board I have ridden. Thatís important to me because I have two recently rebuilt knees!!! I think the deep V under the bindings had a lot to do with that.