flyinggorilla

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About flyinggorilla

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    https://www.youtube.com/channel/UCwhb6u4A_Hy-c-eJbMLW7bg

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  • Location
    Austria
  • Interests
    A-Class DNA F1x and Whisper foiling catamarans

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  1. flyinggorilla

    A-Class foiling sailors

    thanks, good tip.
  2. flyinggorilla

    A-Class foiling sailors

    Thanks, that are great tips, really helpful. That's motivating and I will absolutely train the stance at better wind conditions - I agree, the difference to the pro's is too obvious ;-). Two of my capsizes on downwind course were related to wind coming within seconds form the opposite direction (north wind flipped to south foen wind to my very surprise), so I guess only a better reading of the water and getting quicker back onto the boat could prevent that capsize. Ah, and the tip on the sheet wrapping is interesting - do you use your tiller-hand to give/take additional sheet when you dont wrap?. I really look forward to get coaching next season.
  3. flyinggorilla

    A-Class foiling sailors

    For sure that makes sense and it's clearly on my todo list for next season. However, training "handling stormy situations" is likely not on the standard coaching program. So sharing some tips and lessons learnt online can help others too. FG
  4. flyinggorilla

    A-Class foiling sailors

    What to do in a storm? When the foen storm with 30+ knots came in, I quickly changed from "sailing" the A-Cat to "hanging-on" the A-Cat. I still capsized four times, yes I tried to sail, but the waves and wind just played too hard rodeo with me. I am wondering if you guys have hints and tips how to better deal with such situations. After uprighting the boat the last time I ended up "riding" the boat at 2-3 knots boat speed with the bows against the waves, cunningham pulled, traveler furthest out, main-sheet lose. What else could I do to "hang through the storm". I figured after 20min getting through the worst that maybe getting closer to the shore at the right spot could have had smaller waves, and as such safer "sailing". So I realized I should have tried to get closer to the shore much earlier. Yet there is another risk, as capsizing close to the shore with mostly cross-shore winds is something that I dont want either, because the risk of hitting something and causing a real damage is just much bigger. At some point I wanted to sail through it, pulled not only cunningham but also rotated the mast completely in (meaning no rotation) to have minimum power., while opening main-sheet and traveler. After the storm - and after 4 capsizes - i realized that 4 battens were broken. Not sure whether the combo of no-mast-rotation plus open traveler/main-sheet was the issue or one of the capsizes or both. Clearly next time I get into a storm I will have the mast-rotation completely open. Sailing with broken battens works more poorly than I had guessed. After all, I think I managed through my first storm, broken battens isnt the worst, but clearly I want to do better next time. Such foen storms are new to me, very rare at my lake, and as such I am curious what additionally I could have done to get better through such storms. Finally, the parts hitting 21knots downwind - the combo of silence and speed - gave me a big *grin*, compensating for the rest. Very challenging with winds turning 90-180 degrees, but a great experience of nature and sailing. Best, FG
  5. flyinggorilla

    A-Class foiling sailors

    Nope, that is just some gopro wide-angle distortion. The foils are kept pretty tight in its shafts. The angle can only be adjusted in forward/backward direction, but not sideways.
  6. flyinggorilla

    A-Class foiling sailors

    Exactly. I have the same conclusions. The lower lines have some rubber band attached. I will remove those and only go with my 1.7mm leech line, that does not flex. That should reduce the shaking a bit.
  7. flyinggorilla

    A-Class foiling sailors

    My DNA foils have been color coated. Surface is glossy. However, DNA recommends to sand and/or hullkote the foils in general.
  8. flyinggorilla

    A-Class foiling sailors

    Mounting a GoPro on an A-Class catamaran My former Nacra F16 and my Whisper catamaran have a gennaker pole, so mounting a GoPro there was obvious. But where to mount a GoPro on an A-Class catamaran that doesnt have a gennaker pole? I didnt like the idea to use suction on the hull (have seen to many youtoube videos where the GoPro comes off), so I figured the furthest out on the boat are the forestays. Since there is no standard GoPro mount that fitted the need for that location, I 3D printed one. I assume this fits on many A-Class cats, so hope that helps. https://www.thingiverse.com/thing:3170230
  9. flyinggorilla

    A-Class foiling sailors

    A-Class DNA F1x vs. Whisper catamaran - first impressions Alone or with Crew A-Class cats are by class-definition single-handed catamarans. Also the mast is tuned for my weight and could not withstand two people. Whisper has two trapeze-lines and is best balanced with two people. It can be sailed single-handed too - but find it tricky to get enough upwind VMG one the foils with not enough weight. So taking out friends, family and kids are fantastic with the whisper. I capsized frequently, but never had an ugly nosedive like with my Nacra F16 I had before as the thin hulls - the wavepiercers - go so smoothly through the water and dont stop the boat. In fact, I is now much easier to get the family - kids to wife - onto the foiling catamaran than on the F16 classic cat, as the foiling catamaran behaves in all situations more stable and is easier to upright and get back on the boat. Rigging the F1x is simpler: No halyard. You simply push the sail up till it hooks. Only two battens to mount when hoisting the sail. No rig tensioning needed. Also less work. No jib. So less work. Z-Foils insert from top and fully removable. So it is much easier on land to quickly pull the boat over to the side for whatever mast maintenance reason. Or to put hullkote on the foils or sand them with 800 paper (this foil tuning is on my todo list for both boats - I am curious how much I can notice a speed difference). Unmounting the T-foils on the whisper always requires to remove the rudder-mounts entirely so I can tilt the boat up. Oh, another advantage of removable foils is to easier get the boat on-off the trolley – especially the 4-wheel trolley I use. With the whisper I need to get into 60cm deep water so the trolley would be deep enough under the boat to not hit the t-foils when moving the boat off the trolley. The Z-foils cannot fly as high as the whisper, so in waves (that I don’t have at my lake) the whisper might be easier to keep balanced above thee waves. So about 30-40cm water to hull for the F1x, vs. whisper approx. 50-80cm water to hull Whispers T-foils have flaps for easier flight control, but I find with the tradeoff of less VMG upwind. Yes, one should heel backwards like on the moth, but I can do this only in excellent wind conditions. Boomless sail on the F1x – so good for not bumping the head – and the sail better shaped, deeper, giving quickly power starting with low winds and keeping it up at speed. This triggered me thinking about how I could better tune the battens and sail shape of the Whispers for more power quicker.. 75kg entire boat plus rig! That’s at about 35kg less than the Whisper, which is also super-lightweight. Both can be uprighted single-handed. The F1x is clearly tuned for racing - and for speed. Small things, like a line to keep the mast rotated out even at low winds, adjustable foil rake that steers both foils in sync, and adjustable rudder rake that steers both rudders in sync. And lots of aerodynamics improvements. Really cool. The Whisper is designed for fun foiling - for which i love it. The DNA F1x setup is super clean, the traveler sheet is inside, the mainsheet goes into the middle of the trampoline into a wheel system that speed/force-transforms to a thin dyneema mainsheet to the sail. Super clever andno longer dangling sheets in the water. FG
  10. flyinggorilla

    A-Class foiling sailors

    Hi A-Class foilers, I start this thread to have a forum for some basic how-to exchange on foiling A-Class catamarans. I am proud new owner of a DNA F1x catamaran (for single handed sailing) and also sail a Whisper catamaran (works best with crew) for the third season. I am a weekend recreational club-sailor, who loves cool technology and nature at the same time. However, I still have to figure out if and when there is ever enough time to prep and sail the first club regatta. Hence you will find my priorities more on how to mount a gopro, rather then regatta starting-line tactics ;-) Just to get this thread kicked-off, here is a video from my first time sailing with the DNA F1x. I have to say that I was very pleased with the smooth and easy boat handling, the clean deck, the powerful boomless sail, and the stable flight in little winds. And of course the speed. I hit 20kts boat speed on my first day at low winds (18kts speed were captured on gopro) - and I am still at the beginning of learning the boat handling and trimming. cool! FG
  11. flyinggorilla

    Whisper Foiling Catamaran Sailors

    Hi multihull sailors! I wanted to make the videos more interesting by cutting different perspectives. As I stumbled over an A-Cat sailor on YouTube using a ChaseCam I wanted to tray that too. So I share my experience here to take Videos using a ChaseCam to get additional shots from behind/side. Of course you can use the original chasecam without modifications. However, as I had an older GoPro Hero3+ with BacPac, it didnt fit in any ChaseCam. So I needed to print my own GoPro adapter for the ChaseCam. https://www.thingiverse.com/thing:3088717. Also I wanted to heel the camera downwards a bit to get more a "drone like" perspective. With that adapter you can adjust the angle freely. Practically also because I didnt want the chasecam hitting our head when bouncing around. I mounted the ChaseCam with the supplied bungee at the mainsail top shackle. It actually worked well enough for both port and starboard side. Of course it entangles from time to time but when there is enough (apparent) wind it flies nicely. Upwind even better than downwind for obvious reasons. You can see it in below videos. As you cannot take (realistic) GPS data from an actioncam mounted on a ChaseCam, you will need to go the extra mile and take GPS data from another device. Either you have an additional Actioncam with GPS mounted statically on the boat or you use a GPS like the velocited speedpuck. I used the speedpuck for below video and manually matched GPS data with video using dashware. I had an additional GoPro 6 mounted on the spinnaker boom, but sadly did the powermanagement kick-in and my remote couldnt turn it on that day. Combining gennaker pole shots, chasecam and drone shots into one video should allow some nice cuts. Here are two videos, short and long version. -FG
  12. flyinggorilla

    Whisper Foiling Catamaran Sailors

    I have to say I am jealous I couldn't join you for the Miami foiling days when I see the scene of Miami, the great winds, and great riders of the boats. I can see you had a great time and great experiences. Thanks for sharing all the cool videos (and the ones yet to come) and the boat comparisons. @martin.langhoff I have to say it is challenging to sail the whisper alone on upwind course. primarily because my weight of 73kg is not enough to counter the heeling force going upwind. so on the video you mentioned https://www.youtube.com/watch?v=KmmQvhYZrCA&t=8s the windward hull would fly too quickly with a synchroneous (e.g. 4/4) foil rake setting. Then I have to go slack off soo much that I loose so much speed that the leeward foil wouldnt fly. So my solution to the problem was to set the leeward foil to maximum (5) foil rake and the windward one to minimum (1). This allowed me to get more speed on upwind course before flying, and when taking off it was easier to keep the boat horizontal/flat or with a little heel windwards. Also with windward foil-setting to minimum I had a better feel whether the hull would raise due to wind pressure or due to boat speed causing hydrofoiling. Of course the tradeoff is to adjust the foil rake on every tack. Not really regatta suitable when single handed. What I want to try next - and thats why I printed those ride height adjuster knobs - is to not only adjust the foil rake but also the ride height. I would like to make it a bit more boat controlled to heel windwards. The knob allows to count the turns, e.g. 3 full turns on the knob to adjust the ride height up/down to have more heel on the windward foil. Of course this slows every tack further, but hey, we all want to learn that stuff and have fun with it.
  13. flyinggorilla

    Whisper Foiling Catamaran Sailors

    Hi Whisper foilers who want to fiddle with the ride height. I found I used the rope based adjustment wheel always by hand without a line, so I designed now a more comfortable to use knob. It is better to handle and you can count the turns (the knob is asymmetrical and has an imprint to show the ride height adjustment direction). Here is the model for 3D printing. https://www.thingiverse.com/thing:3078431
  14. flyinggorilla

    Whisper Foiling Catamaran Sailors

    For those who do some 3D printing i have collected a Thingiverse group of whisper parts, including replacement wand, speedpuck holder and rudder holder. Whisper foiling catamaran 3D-print add-on and replacement parts
  15. flyinggorilla

    Whisper Foiling Catamaran Sailors

    Just wanted to share a couple more whisper catamaran videos inclusive a few drone shots. hi speed i managed so far given the lighter winds at our lake is 18 knots on reach course. whisper foiling