Is this only comparing the “piercing region”? I dont see how it could only be 4% less when the bottom of the Cedrus Surf is 19mm thick and the chord is also longer. The torques torsional stiffness on that post is interesting though. Either way, I think your point on your blog about focusing too much on dimensions vs how the ride feels is valid. Im curious to just get one and try it out now that Uni is so cheap. One commenter said its barely noticeable and another just said its a whole different level.
I’ve done a few torsional test with a similar setup, and results can vary quite a bit between tests. You mention compensating for longer fuses, so assuming you used the manufacturer’s fuse on each mast. I know the new two-bolt Uni fuse has quite substantial play that will definitely affect tortion reading.
The seating at base / fuse is another variable. Also the rigidity of your table for longer fuses. That Axis fuse seem to have outgrown it’s mast ![]()
We test masts multiple times and take the average of the results. We also ensure that the fuselage is preloaded in the direction of the applied load, to remove any slop. We didn’t test the Unifoil mast with their fuselage, we used a rigid bar, so that did not contribute to any deflection. The “seating” at base/fuse are not additional variables, they are constant boundary conditions among all samples. The mast mount is rigidly fixed to a strong back, and fuse is supported by a pin at mid chord of the mast to allow free rotation. The pin is sitting on the mount under the fuselage, you can’t see it. Not sure what you mean by the fuse “outgrowing” the mast. There is some candle wax that Axis applies to their mast plugs to aid insertion into the fuselage.
I found those tests you did really interesting and quite surprising.
Is there any chance you can test the Uni Race mast? Is be really interested to see the comparison to the Torque.
It’s funny, I went from a short Axis HM mast to a long NoLimitz V1 and it’s actually… fine, although stiffer is better, I know.
If you happen to have a NoLimitz V1 near your test bed, I’d love to know how it goes…
But thanks for that test page, I loved the Cedrus blog posts ![]()
Thanks. Our goal with sharing this data was to illustrate the variation in stiffness levels for different loadcases, not necessarily to identify the stiffest models or brands. Someone asked for a comparison to Cedrus, so we offered the data because we had it. It’s beneficial to add qualitative results to some very strong and often unfounded opinions and marketing content. This testing is quite time consuming (and therefore expensive) so we have no plans to update our public results, but will continue to test internally for benchmark purposes.
If you are happy with your setup, that’s really all that matters. Who cares about what someone else thinks or how stiff it is on a bench test. We’ve said it many times that there are diminishing returns with stiffness beyond a certain point and that our carbon masts were never designed for big/slow foils. It’s a constant balance between stiffness, drag, weight, cost, speed, glide, and we leave it up to you the customer to decide what is most important. So keep foiling and have fun on the gear you have:) Because that’s the cheapest option and best thing for the planet for sure.
Thanks for the reply, you’re a good man ![]()
Has anyone tried the evo205 or evo235 with the Katana mast?
