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48 foot XSR48--90mph in 48 feet

Discussion in 'General Yachting Discussion' started by Yacht News, Feb 23, 2007.

  1. AMG

    AMG YF Moderator

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    This windscreen that we have on all three models we produce at present, has no significant negative effect. A normal slooping windscreen is creating more downforce which gives a larger wetted surface and a slower boat. Our windscreens might have a lifting effect instead, but with increased air resistance. And air is softer than water after all.

    With eight lifting strakes on the 26° deep V-hull, this boat is riding high and has very little spray and wake. Here at normal cruising speed just under 40 knots.

    Attached Files:

  2. MaxResolution

    MaxResolution Senior Member

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    Little Rock
    This, I can relate to

    Aah, yes, the chines of freedom. Looks exactly like the water in Greers Ferry Lake, on a perfect day to slalom. She sits up and rides nicely. And, (in hindsight) that's what I meant, because the cabin clearly sits back of center, so it surely "lifts," and if anything just to help the chines do their magic, (at this speed.)

    I'm not sure where to post this novel tidbit, but we seem to be on the topic of speed... Top speed! The wildest claim I've seen on any production vehicle, to date. Watch this video of the Bugatti 'Veyron'..

    --"Four Hundred and Seven Kilometers per Hour!--

    http://www.livevideo.com/video/Coff...A633733B265/the-fastest-car-in-the-world.aspx
    :eek:
  3. Blarp

    Blarp New Member

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    The XSR 48 is based on a hull similar to that of the Sunseeker XS2000, which in turn was based on a Fabio Buzzi raceboat hull. So they both have racing heratige going way back.

    Sunseeker should have been the ones to build the expensive XSR 48.
  4. AMG

    AMG YF Moderator

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    I met with a friend today who was over in England in January for a test ride with the XSR. He used to drive the Sunseeker XS, but this one was a lot faster, equipped with Isotta Fraschini in race versions. They were running about 86 knots, almost 100 mph. He was very impressed by the acceleration after the second turbo kicked in. Boats with two-speed gearboxes will therefore remind of having four gears!

    The "fenders" on the hull sides acted stabilizing at turns, almost to the point it felt like driving a Formula One car he said.

    The hull is identical to a successful Buzzi race hull, but as such, not for everyone to play around with...
    Last edited: Mar 1, 2007
  5. Ben

    Ben Senior Member

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    Melbourne Australia
    AMG are you refering to the characteristics of the hull or the high speeds involved?

    The top speed was also questioned, how much would the two speed gearbox help with this?