Try Flying

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About Try Flying

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  1. Try Flying

    Self steering trimaran

    Gusty, reaches are the time to be hand steering with sheets in hand, I wouldn't trust either setup in those conditions personally. In a steady wind reach/run I would think the strategy would be to get the boat up to speed and drive the apparent wind fwd prior to engaging the windvane. At that point the wind vane would drive down as the boat accelerated and lift up on easing wind or slowing as effectively your back to upwind sailing. I see autopilots/windvanes (of all sorts) as aids when its easy/boring sailing not to replace the nut behind the wheel in more challenging situations.
  2. Try Flying

    Self steering trimaran

    Apparent Wind Speed Apparent Wind Angle , As Far As I Know
  3. Try Flying

    Self steering trimaran

    My initial gut feelingis actually the opposite and that they may be too responsive given the faster AWS and AWA changes as well as speed thru the water increasing oar leverage. But that said AFAIK its a basic feedback loop that needs to be adjusted to get the correct Gain in the system. That is part of the reason I'm tinkering in CAD to design my own as off he shelf variants may just be tuned to the more standard and slower craft that they are usually mounted on. My gut makes me think that one needs to reduce this gain proportionally to speed thru the water in the same way one doesn't make large course corrections when driving at highway speeds. Likewise some form of filtering is needed to avoid reacting to fast moving transients and rather follow trends. These issues are present in electronic devices just as they are in mechanical systems so its a design challenge IMHO.
  4. Try Flying

    Self steering trimaran

    I'd be very interested in hearing from those that have tried a mechanical windvane on their multi. Just to get my head around the issues experienced. For me its just an interesting project for our TT720 which would definetly be on the slower end of the multi spectrum. I'm not planning on any blue water adventures but am intrigued to try one out on our sails down the coast. I personally didn't warm to the constant whirrr whirr of our old autopilot. I'm actually a techie at heart but love the clockwork gadgetry of a functional servo pendulum. The ability to have predictive steering and gyro feedback with gains tailored to current sea state etc etc make the electronic versions a amazing bit of kit these days but the old world charm of a mechanical feedback loop is still pretty cool in my books. Cheers
  5. Try Flying

    Self steering trimaran

    patzefran why do you say you cant use a windvane on a fast boat? and how fast is fast. I've heard this before and while I get that on a boat running 20knots that does make sense (based on reaction times and gain etc) I fail to see why this seems to be applied to all multis. To me its just a case of getting the boat up to speed prior to engaging the windvane to avoid a vastly different course to the initial one. Windvanes always work on apparent wind its just that us multis have the ability to create a higher % of it compared to slower boat. Cheers Mark TT720 slow trimaran
  6. Try Flying

    Sydney To Hobart 2018

    I'm not sure if this has been already noted but I do find it weird that on MarineTraffic (a web based AIS tracker), WOXI was shown a last known position early this morning as in Sydney harbour. And the time of the last known position....2018-12-26 11:08 Later this morning It got an update from Hobart 2018-12-29 09:49...makes me think the jury is testing it or someone finally fixed it. Timing is a bit sus though.
  7. Try Flying

    F-22 Update

    Looks more like a step as it's a huge ventilation plate (cavitation is something different) and doubt you would need a hydrophane foil of a 6 Hp. Know what it is Peter? I extended my ventilation plate forward and angled down a bit on our TT720 to get hull wake flow inline with the plate to reduce spray but nowhere near as large as that.. OK quick google... https://www.ozpropellers.com.au/aluminium-hydrofoils-1/yamaha-outboard-hydrofoils/yamaha-outboard-hydrofoil-suits-8-30hp.html My guess is to help with pitching and help smooth the ride under power. Light boats lift their arse easily and the prop gets lifted out of the water.
  8. Try Flying

    Race Replays

    Not sure if this has been said but can people who have the bandwidth please leave the seed up for a day to help others... I normally don't do this (yeah I know I'm a leech) for other torrents but given the outstanding job RudderNZ and others have done to post these seems only fair we payback a little...Just my $0.02 Like others have said.. dinner and a sail are on me if you're over here in NO, GA and TS's stomping ground of the central coast NSW These boys have definitely put Wangi Wangi and our local waters on the international map. Cheers Mark
  9. Try Flying

    Race Replays

    Any chance of some more 360 videos floating around? Coolest thing is watching them with an Oculus headset... (no I'm not sitting on a bike at the time but that would be a next level of geekness) This is so cool as you can focus on the stuff your interested in rather than rely on changing camera angles etc. Watching the sail trim or foil operation during tacks, gybes and starting tactics is very informative. Plus you can hear the onboard banter rather than the made for the masses BS commentary.
  10. Try Flying

    Sailtimer Wind Instrument

    +1
  11. Try Flying

    F-22 Update

    Foil or non-foil? Is there such a thing as a non foiling boat anymore?Flying boats? Aren't they airplanes. Ones without motors are Sailplanes ;P
  12. Try Flying

    Farrier F-85SR

    Awesome Clive I'm sure your 4th will come around ...with time. Stick it to Phill to make sure he gets the dates right for next year and lets get 24hrs done in a F85sr.. Hats of to you for being out there and a even bigger hats off to the 24hr guys. Please post a link to your RaceQs track as I'd love to see it.. Well done boys .. well done!
  13. Try Flying

    Farrier F-85SR

    DXF files are usually an added cost and not included in the paper plans but are very reasonably priced... you would have to talk to Ian if the original plan owner did not get them
  14. Try Flying

    Farrier F-85SR

    Unfortunately I'm going to miss out too. But HTFU guys 24hrs or nuthin I say! One lap and 12hr is a dawdle... especially now that it is run in these warmer months. Its how you setup for 24hrs that separates the sailors from the adventures Its hard, you will swear that you will never do it again and it will be something you will remember long after a normal race. Do it once and then call me a liar.
  15. Try Flying

    Farrier F-85SR

    Looks good Evil and I think it will be a good move considering the buoyancy in the floats like you say. I know most of the times only one rudder will be in the water but do you think it would be worth putting bent tillers on the float rudders to setup proper Ackermann angles for when low riding or under power? Your tillers look straight in the photo. Cheers