Has any tried the simmer cortex as a twin in onshore? I bought the quatum and didnt get on with it, i have read cortex has a faster rocker.
Hi Roy, you might be better off looking at the Fly wave 85. Although it is marketed as more of a ground swell /dtl design it actually excels in onshore conditions and will be more versatile than the Cortex if you plan on using it in varying conditions.
I think the Flywave would be on the other side of the Quantum compared to the Cortex no?
You could reach out to Ola H on the sailboardsforum, he responds really well and designed them after all.
Hi Grant, it is marketed that way but in reality it is a really good board in onshore conditions. In my opinion it is the pick of the bunch due to its versatility. I've been sailing one now for the last 2 seasons as my one board quiver. Having owned the 85 quantum and cortex previously I'd choose the flywave.
That definitely not what I'd expect. Wonder how it works in big sizes? The big Quantums are on my radar.
I've only used as big as the 90 quantum in current shape and it is a nice board but couldn't comment on larger sizes. I preferred it setup as a thruster when I had one.
Select to expand quoteTroppo said..
I've only used as big as the 90 quantum in current shape and it is a nice board but couldn't comment on larger sizes. I preferred it setup as a thruster when I had one.
I'm on an 85L V3 as my high wind board (+90kg), quite like it as either quad or thruster and might try a twin sometime.
My big waveboard tends to be 100-105L depending on brand and the current gen Quantum is definitely something I'll consider once they get into the used market a bit. Few companies make a large windswell board that isn't just a FSW.
Not tried the Cortex but saw an amazing demonstration of its use in Cape Town 2019.
We were appr 15 sailors out in Paternoster with gusty sideshore 15-25knots conditions. Chest high waves. We were all struggling with getting our wave bananas planning enough to get out and catch a wave or two. Then suddenly a sailor with a Simmer sail comes downwind from the town and starts ripping. He rides the wave with perfection between the gusts and uses the gusts to get out again and get a new wave. He does this with perfect timing and keeps his board planning the whole time without putting a foot wrong. He catches at least 10 waves this way. No other sailor gets more than one wave during this stunt. It was just the most blending demonstration of skills and correct gear in difficult conditions I have ever seen. Brilliant..... The board in use was a Cortex. The sailor was probably Max Rowe , skinny bold guy with long blonde hair on the side of his head, hell of a sailor. He just went upwind like a slalom sailor and diseappeared back to town leaving the rest of us slogging around. Memories still makes me smile.... So if you are looking for an easy to get going wave board I think the Cortex will fit you.
Ola H, Simmer shaper here. The Cortex and Fly have similar rockers with just some differences in v-flow. Both are actually faster than the Quantum. The Cortex has shorter but wider tail and a bit more tail volume too. Both boards a very easy to get going, but the narrower and thinner tail of the Fly makes it a tad more technical. The Fly can as mentioned be put to very good use also in onshore, in particular of you are a high level sailor. But the Cortex will give you much more for free. The wider tail and low curvature outline will make it keepd speed in longer non-powered up onshore style bottum turns much, much easier. But the shortness of the tail will still make it very reactive in shorter turns, more so than the more traditional Quantum shape. The Cortex works super well as a twin. It will be even faster and the fast rocker makes it pretty easy to plane early on even with relatively small twin fins like 2x15. The Corte is actually also a very capable board in bigger sideshore conditions, so it is a very all round board.
Select to expand quoteOla H said..
Ola H, Simmer shaper here. The Cortex and Fly have similar rockers with just some differences in v-flow. Both are actually faster than the Quantum. The Cortex has shorter but wider tail and a bit more tail volume too. Both boards a very easy to get going, but the narrower and thinner tail of the Fly makes it a tad more technical. The Fly can as mentioned be put to very good use also in onshore, in particular of you are a high level sailor. But the Cortex will give you much more for free. The wider tail and low curvature outline will make it keepd speed in longer non-powered up onshore style bottum turns much, much easier. But the shortness of the tail will still make it very reactive in shorter turns, more so than the more traditional Quantum shape. The Cortex works super well as a twin. It will be even faster and the fast rocker makes it pretty easy to plane early on even with relatively small twin fins like 2x15. The Corte is actually also a very capable board in bigger sideshore conditions, so it is a very all round board.
Amazing cant belive I missed this, I end up with a helix as my big board and cortex as my my small travel board in twin fin, then quad if windy.
I have the 115 Quantum and 99 cortex, After dropping 25kg the 99 cortex is now my go to board until I get a 99 flywave to Australia. I really love the cortex and use it mainly DTL and it's super fun especially when the waves are a bit crap. It's a super early plainer and I run a quad K4 incinerator setup. It turns like a demon and feel so forgiving. It's only hurt me once 
when I was 115kg the Quantum was awesome for DTL but it's now just too big for me except when it's stupidly light. I know it's different sizing but I certainly recommend the cortex for the pure fun factor.
J 
Select to expand quoteOla H said..
Ola H, Simmer shaper here. The Cortex and Fly have similar rockers with just some differences in v-flow. Both are actually faster than the Quantum. ....
Does this mean the Qunatum has more rocker than the Fly/Cortex, despite the Fly being a groundswell board?
And that the speed/planing of the Cortex comes more from the outline than a flat rocker?
Just reading this thread 6 months later. Having owned a Quantum 90 (which I didn't get on with) I now have a Cortex 90, and it does everything Ola says. So weird to have such a compact, early planing board that is both great in dtl (today in half mast in Wales UK) and in onshore conditions too.
I changed the stock Tri set up to quad as I found the 19cm centre fin just gave the board too much power on small sails. As a quad it still planes fast but is loose, grippy and so easy. Even with 3.7m (I'm 85kg).
