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Post by burt on Sept 23, 2017 1:20:33 GMT -8
Hi All,
Would it not be great if you posted tips and tricks here to help your fellow hotlappers go faster?
Somehting like; if you keep your AWA to xx in xxx boat, you will go just a tiny bit faster going up wind. ( i forgot real examples here) Or; if girls sail naked their sim crossings will be much smoother. ( not sure if this is correct but cannot hurt to try )
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Post by justmike247 on Sept 29, 2017 13:16:08 GMT -8
Hotlaps at Grant in a 12m
Prestart
Prestart is usually critical for a good 12m time; I don't think this lap's an exception to that rule. Try to position the boat south east of the red buoy that marks the last turn before making your run at the line. Initially, hike slightly to port until the speed has built enough to have the main and jib fully sheeted home before hiking fully to port. Set your course to intercept the line just inside the windward mark. That should see you clear to the first turn with no more steering inputs. Expect speed to peak around 12.5ish, before gradually bleeding off as you close on the first mark.
First mark
Pre-select your genoa; it's one less thing to do at the turn. At the turn, raise the Gen, stay hiked fully to port, sheet out a bunch before sheeting back till she stops luffing. Keep pace with the boat's acceleration, sheet in one click at a time accordingly and sprint for the next buoy. Pre-select the jib for the next turn. Generate a heel angle of 23deg and keep it to the turn.
Second mark
Raise the jib as you make the turn; aim to hit a BTT of around 3deg to port of the next mark. Change your hike to the inner starboard position and trim both sails together till she stops luffing. Let the speed build. If you've laid in the proper course, you should clear a red buoy on its stbd side, but may need a steering correction to port. Don't make that correction till clear of the buoy and make the correction as gentle as you can. Allow the speed to build once more. Aim is to be at the mark with boat speed at 14kts or better. Initiate the next turn as soon as USB beeps. Heel angle for the whole leg is 20deg.
Third mark
Keep the jib deployed, but sheet out/back in once you're on the reach. Don't change your hike position from inner starboard. Sprint for the island and brace for the sim crossing lag.
Fourth mark
Couple of gentle taps to port, bring your hike one click to port, sheet in till she quits luffing and pre-select the Spinnaker. Take a deep breath; next turn's critical and there's a lot to do.
Fifth mark
Raise the chute right before you begin the turn. While still turning, hike fully to starboard. When the chute has deployed, sheet out to bring/keep the chute into play as you execute the turn and don't worry about the main. When you're happy that your hike is correct, course is in the ballpark and the chute is properly trimmed, sheet the main fully home and pray you don't loose too much speed.
Sixth mark
Easy gybe. Pop the button as you turn, change your hike to the oppsite side and crank the chute around till it stops luffing. Let the speed build.
Seventh mark
Gentle turn to port. No change in hike required. Sheet the chute back as you turn to keep it pulling; it should only need 2-3 clicks. Don't cry as the speed bleeds. Pre-select the jib.
Last mark
Raise the jib just as USB beeps, hard turn to port before copying the pre-start sequence re hike and sail trim.
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viv
New Member
Posts: 32
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Post by viv on Oct 7, 2017 7:53:22 GMT -8
Thanks for sharing, Mike... I find some interesting tips, especially about hiking and such... We know the heeling angle is key to maximize boat speed, finding the sweet spot where the waterline is maxed out.... Now, this raises a few questions... First, how do I know the heel angle, when all info I use is speed (in m/s, not knots, btw) and AWA, using the simple info-hud provided with the boat ? I usually know I am about right when the railing is in the water or about to be... is this coherent with your more precise instruments readings? Then, I ditched the USB long ago, so I ll never know when it "beeps" , but that s only me loving my charts Cheers and pinky bits! (*winks*)
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Post by justmike247 on Oct 7, 2017 16:03:33 GMT -8
Optimum heel is a queer thing to nail down to quantifiable specifics... it shifts, depending on point of sail, wind strength, and whether the boat is crewed. Hike is one means to heel the boat, but fore and mainsail trim are available too; sometimes you need to sheet father in to induce more, sometimes ya need to luff like crazy to prevent her heeling too far... For every established data-point, there's a half dozen "unlessss's"."Suck-it-n-see" method for finding optimum heel involves making teeny alterations, observing their effect on speed, and using judgement/experience re whether to give her another tweak, or to ease off some to keep her at optimum. The only universal constant I've found is that if your rail's getting wet, you're heeling too far; hull-stall happens.
USB beeps when within 50m of the target, which is a little under the turning circle of the boat when underway
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