Put a new, smaller front foil on today. I was surprised how easily it lifted out of the water. It felt a bit twitchy, and faster. But the key learning was I was constantly breaching. I didn't change the rear foil, so I am guessing I need something smaller to better compliment the front foil.

Got me wondering, what are all the things the effect the lift characteristics of the foil? The rear foil may not be the thing. What else impacts the lift?

Other than area and stabiliser angle, factors affecting initial lift are the angle of incidence of the foil and foil camber (i.e. how asymmetrical the foil profile is)

From which foil to which foil did you go?

And to which foil did you go to? It is a HA type wing ?

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eppo said..
And to which foil did you go to? It is a HA type wing ?

These are the culprits.

Lots of variables to consider to reduce the tendency to breach on take-off - move mast back, smaller stabiliser, add a shim to the stabiliser to reduce the downforce it creates (e.g. downforce increases angle of incidence of the front foil and hence lift), shorter fuselage reduces the downforce from the stabiliser. The 90cm wing you have pictured is high aspect and will tolerate higher speeds - the Axis website describes it as intermediate/advanced so it will be twitchy and more sensitive to rider input, but with the other kit properly tweaked and your feet positioned relative to the centre of lift not prone to excessive breaching.

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Nov8 said..
Lots of variables to consider to reduce the tendency to breach on take-off - move mast back, smaller stabiliser, add a shim to the stabiliser to reduce the downforce it creates (e.g. downforce increases angle of incidence of the front foil and hence lift), shorter fuselage reduces the downforce from the stabiliser. The 90cm wing you have pictured is high aspect and will tolerate higher speeds - the Axis website describes it as intermediate/advanced so it will be twitchy and more sensitive to rider input, but with the other kit properly tweaked and your feet positioned relative to the centre of lift not prone to excessive breaching.

Nice, thanks for the comprehensive advice. I'd put myself in the intermediate bucket. Will pull the mast track back. Maybe get a smaller stabiliser and get out on it more to adjust to the feel.