This thing hauls the mail!!!!!!!!!!!
http://youtu.be/pipGWQmerEQ
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| speed record broken http://www.hobie.com/forums/viewtopic.php?f=9&t=45855 |
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| Author: | hobiesrock [ Thu Nov 29, 2012 3:03 pm ] |
| Post subject: | speed record broken |
This thing hauls the mail!!!!!!!!!!! http://youtu.be/pipGWQmerEQ |
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| Author: | jmecky [ Thu Nov 29, 2012 3:39 pm ] |
| Post subject: | Re: speed record broken |
Ahhhh that aint nothing, I reguraly go that fast with my 18. On the highway. |
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| Author: | mmiller [ Thu Nov 29, 2012 3:47 pm ] |
| Post subject: | Re: speed record broken |
That is clearly over the recommended trailering speed! 75.23 MPH!!! (65.37 Knots) |
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| Author: | jmecky [ Thu Nov 29, 2012 4:53 pm ] |
| Post subject: | Re: speed record broken |
It was down hill with the wind behind me while trying to merge with three lookouts for only 2 seconds. |
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| Author: | Boatbit [ Thu Nov 29, 2012 9:18 pm ] |
| Post subject: | Re: speed record broken |
Creative wrote: mmiller wrote: That is clearly over the recommended trailering speed! 75.23 MPH!!! (65.37 Knots) Amazing result!!! |
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| Author: | fastcat [ Fri Nov 30, 2012 9:47 am ] |
| Post subject: | Re: speed record broken |
WOW |
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| Author: | srm [ Fri Nov 30, 2012 10:14 am ] |
| Post subject: | Re: speed record broken |
That thing is truely awesome. Seems like not that long ago 40 knots was the number to beat. I love the footage at 0:57 seconds when he bears off about 20 degrees and the thing goes from fast to warp speed. sm |
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| Author: | Bille [ Fri Nov 30, 2012 11:21 am ] |
| Post subject: | Re: speed record broken |
YEA -- Lots of discussion over on the kite board forum on just how we could get our record back,(until sail rocket/we were the fastest). A kiter had taken the record away from Hydrosphere by going 55Kt . We were all Happy until sail rocket came along. The only thing i Don't like about sail rocket is that it can only go in one direction. BILLe |
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| Author: | Skipshot [ Fri Nov 30, 2012 12:04 pm ] |
| Post subject: | Re: speed record broken |
If Oracle wins the America's Cup then Larry Ellison may have a new design to consider for the next Cup. |
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| Author: | jonh [ Fri Nov 30, 2012 9:46 pm ] |
| Post subject: | Re: speed record broken |
On the few articles I lightly browsed I don't see the wind speeds this was achieved under. I mean, if there's an even better blow, could there be a even better incremental speed boost, right? I hope  Or are there design limits involved... a few more knots but not logarithmically so obviously...rhetorical question and curiosity mainly on my part. |
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| Author: | MBounds [ Sat Dec 01, 2012 6:23 am ] |
| Post subject: | Re: speed record broken |
jonh wrote: On the few articles I lightly browsed I don't see the wind speeds this was achieved under. I mean, if there's an even better blow, could there be a even better incremental speed boost, right? I hope Or are there design limits involved... a few more knots but not logarithmically so obviously...rhetorical question and curiosity mainly on my part. The wind speed in which they set the most recent record (65+ kts) was in the high 20's (28 - 29 kts). The relationship between wind velocity and speed is not linear. Drag increases roughly as the square of velocity. What's more limiting to Sail Rocket is the shape of the foils - both the wing and the hydrofoil. Foils that work well at lower speeds don't work well at higher speeds. (This is why planes have leading edge slats and flaps.) Additionally, the SR2 team has had problems with ventilation and cavitation on the hydrofoil. The addition of a fence allowed them to achieve a higher speed without sucking air down from the surface. The hydrofoil also has a foil section meant to deal with cavitation (it's wedge-shaped, with a sharp leading edge instead of teardrop-shaped) 
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| Author: | jonh [ Sat Dec 01, 2012 9:48 pm ] |
| Post subject: | Re: speed record broken |
Matt, over my head but majored in engineering had a few nav architecture 101 courses sprinkled in so appreciate the science behind it. So reading on the HCNA site that Paul Larsen is a Hobie 16 and Hobie Tiger sailor? Awesome! |
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| Author: | Skipshot [ Fri Dec 07, 2012 10:32 am ] |
| Post subject: | Re: speed record broken |
It doesn't always work out. Too bad he didn't stick the landing, then he'd inadvertently set another kind of record. [youtube]http://www.youtube.com/watch?v=8Ow8QbXhZJU[/youtube] |
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