15 AI hull speed?

So today I finally got to sail in proper wind ( its been unusually calm around here for weeks). I was surprised that I could easily sail at 7.5 mph and had the boat over 8 for extended periods, and bursts up to 9.6!
Boat was amazingly stable and I barely hiked out. I can't recall my 2012 boat ever getting over 8ish mph.
All using GPS and with very minimal current so SOW=SOG.

Anyone know what the limit is?

I don't know what the limit is, but I've had the same experience as you have. The AI 2 is significantly faster than the AI.

Keith

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2015 AI 2, 2014 Tandem

"Any intelligent fool can make things bigger and more complex ... It takes a touch of genius and a lot of courage to move in the opposite direction." A. Einstein

"Less is more" Anon

Yes it is definitely faster in all conditions with the exception of straight down wind. Had a lot of fun on a gusty day in sheltered waters north of Scarborough ( Brisbane Australia). Average speed of 14kph (8.6mph) and a top speed of 18.8kph (11.6mph).
The boat is capable of quit a bit more speed i would think. Here is a quick snippet.

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2021 Dune Hobie Lynx

Those are outstanding speeds, even for a TI. Looks like you had optimal conditions.

I think hiking out you could do even better. Pull the drive next time, rake the daggerboard back 1/2 way and try it.