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TazLikesBoats

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About TazLikesBoats

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  • Location
    Melbourne, Australia
  • Interests
    2.4mR, Foiling, boat design and engineering

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  1. Hi @velocitek, The real question is will the new PRO-START have better water proofing than the original PRO-START or SHIFT? I loved both products. Shift was great for sailing in tricky winds and I know a few people that would have the PRO-START and SHIFT in their boat. But by far the biggest problem was water ingress. I have had 5 pro-starts fail because of water ingress and know two SHIFTS that had the solar panel fail and got water into the compass. I sail a 2.4mR its a wet boat but cannot be as bad as a moth. The water ingress on the pro-start was usually from the top buttons. Usuall
  2. Good video. Agree with an angle of incline set around +2 degrees
  3. Hi @erdb or anyone else on this forum. Can you get me race data from the Finals R1 in a .csv file? I want to look at the take off in more details. Plus the downwind speed in the AC Finals is impressive compared to the Prada RR. in similar breeze (12-14kn) the downwind speed has gone from 37kn to 40-42kn downwind. That's a huge improvement. So I want to use the finals data to compare with my VPP. As for the boats working in a wider wind range. I wonder if allowing the foils AOA to be set at the beginning of the race day instead of being fixed when the measurement certificate is issued wo
  4. Looking at the videos and race data ETNZ looks flat pitch=0 for take off and then -2 to -4 when sailing. That seems to make sense. +2 to +4 AOA for take off plus tab would be sufficient. If its a cambered foil flying at -1 to -2 AOA can give a higher performance Cl/Cd than sailing at 0 or +2. Which video of the take off have you been looking at? There is a good capture of take off from ETNZ in the Finals Race 1. I want to look at the ride height data to confirm how long it actually takes for take off.
  5. There is nothing in the rules to stop it. Yes the foils have to be symmetrical about the centre but nothing stopping you from having different control on each side. It wasn't my idea Nathan Outteridge said it back at the Christmas Cup
  6. With LR having such a high mode I suspect they are different tab angles for the inner and outer section of the foil. This means they can produce a lot of leeway force quickly to have the high mode while maintaining a more consistent lift force. It will be interesting to see if ETNZ can do the same thing with their foils as it looks like they have one foil tab angle for the whole foil.
  7. Hi @erdb, How are you getting the data? Do you have it in a csv file? Would be great to compare with my VPP. Any help would be greatly appreciated
  8. Hi Max, Thanks that is great! I want to stick to using an unmodified NACA series foil for the foils so that I can hopefully find some experimental data for comparison. For the AC50 I stuck with using a NACA0012. A symmetrical foil is not as efficient as a foil with camber but meant I could compare with experimental data. for the AC75 I am looking at using an asymmetrical NACA foil ideally something where I can compare to a papers experimental data.
  9. HI @Mozzy Sails, @MaxHugen, @dorox and @Basiliscus Love the videos from @Mozzy Sails and the analysis from everyone else. I'm in Australia and am doing a masters in naval engineering. I've made a 6DoF VPP for the AC50 catamarans and AC75 monohulls using XFLR5 and MATLAB. @dorox how are you getting the raw data out of Virtual Eye? For AC35 I was able to get this data in a csv file. I've opened up developer tools in google chrome but can seem to find the link or file for the sources data. @MaxHugen your drawing of the foils and line drawings from Chevalier have been great for
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