Mini40 'Secrets' - good foiling session

Our Mini40 trimaran "Secrets" having a good foiling session. Still refinements to make on the foils but we are heading in the right direction. Some onboard footage watching the foils at work, plus a good capsize.

[RenoLaringo]

This is just incredible! Managing to scale down such a complex system and make it work like its fullsize counterpart is mindblowing!

[JeremyParsons]

Even motorized hydrofoils struggle with stability. I have great respect for what you have achieved balancing, foiling, sailing and all the disturbances from wind and waves. It looks like great fun too !

[RiftboardsSwitzerland]

Hi, great Video! Very interesting. You were saying that the boat suddenly looses lift and nosedive and you dont know why. I am a Kitefoil racer and we have this problems as well. We call it ventilation. Specially in the upwind course, when we lean hard against the wind we have some air that is coming from the mast down to the wings and then we have a crash. We prevent this problem with a very good sanding of the foil with 800 up to 2500 grid and e cleaning of the foil with window cleaner. When you touch your foil before putting the boat to the water you will have some pollution on the foil and that is why the boat crash.
The other important thing is the trailing edge. it has to be sanded with a 30 degree angle. If not, you will have mor turbulences.
Simon

[JustInvertedFpv]

That is the best most consistent foiling I've seen on one of these rc tri's. It's a rocket! Excellent job!

[mhartleroad]

I believe one of two things might be causing the foil to stall. First, your foil may be deforming under increased load, thereby changing its angle of attack. Second, and imo the most likely, cavitation is enveloping the foil in a bubble of air. Amazing boat!

[Eisfahrer]

That thing goes like crazy 😮 I wouldn't wonder if it's faster than the real ones, wenn you upscale the speed...much respect for building this work of art 👍👍👍

[l.hmuster]

Nice to see the boat and system closer. The videos from the foil is very interesting and shows a lot!
Cool video thanks

[alannewman]

That's cool!! Amazing speed, must be great fun!!

[jonholmes]

Congratulations on the most stable foiling RC multihull I have seen. That leeward foil is always going to be loaded up with significant side pressure, hence to stream of water coming from it.

[lisandronicoletti]

One of the reasons why the foil could be losing lift so quickly is that o pocket of air got below the foil, usually it isn’t o big problem in bigger boats but in Rc, is probably a big difference. What you could do is make them longer such that they are depose into the water, reducing the risk of the stall.
Really great video e amazing boats btw.

[TheBrokenMountainBiker]

Blimey! Once that thing is up on its foils it takes off like a speedboat!

[paulpilkington]

Excellent video recording of this foiling trial.

[thomaskositzki]

I directed here by YT from watching Vendee Globe videos. ^^
Nice, fast boat you got there, really nice hobby!

[donnamarie]

Wow, fasterb than my speed boat!! Well done sir.

[Gtrellis]

Maybe the stall is once foils our out of water the foils weight will increase on the nose.Possibly moving back slightly behind centre of gravity with foil length extended also to achieve even more speed with also a gradual taper to end of foils to reduce drag would help.Some fun you are having thanks for sharing.A bit late, better than never to watch.

[TurgutCirpanli]

Great job. I feel like watching a giant foiling tri in fast motion.

[michaelbrownlee]

Nice boat and session BTW.
Would be cool if when the boat gets lift like that it flies stable, then drops back in the water, like a skipping stone or a flying fish.
If sail boats could fly.

[donb]

Very nice, looking forward to be foiling soon!

[philipbyrnes]

Very, very cool, thank you for sharing this, very neat. 😎👍

[aardvarkissues]

I'm coming back away from heavy taper ratio foils - they're prone to snap stalling which is what you're seeing here. Think thinner, longer chords are the way to go if you want a foil that behaves.