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Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259744
05/21/13 08:35 AM
05/21/13 08:35 AM
Joined: Aug 2011
Posts: 774
Greenville SC
bacho Offline
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Ours at school would overheat idling on the ground if you were not careful. That was also turning a prop pushing a tremendous amount of air over it. Those are also prone to hydro locking from oil draining into the lower cylinders, I don't see anyway to turn it over by hand.

What would really be bad butt is a rotary radial, pretty flipping dangerous for that application.

http://youtu.be/-UBAukXPD-0

Last edited by bacho; 05/22/13 05:29 AM.
-- Have You Seen This? --
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259753
05/21/13 02:06 PM
05/21/13 02:06 PM
Joined: Feb 2005
Posts: 4,118
Northfield Mn
Karl_Brogger Offline
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The centrifugal forces would make that extremely hairy to actually ride.
Even the BMW flat engines were weird to ride and there is nowhere near the amount of weight being slung around like there would be on that.

I'll parrot the overheating issue, aircraft engines need airspeed more than just prop wash for cooling.


I'm boatless.
Re: AC72 Oracle Team USA Spaceship has landed [Re: Karl_Brogger] #259757
05/21/13 03:11 PM
05/21/13 03:11 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
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Jake  Offline
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Originally Posted by Karl_Brogger
The centrifugal forces would make that extremely hairy to actually ride.
Even the BMW flat engines were weird to ride and there is nowhere near the amount of weight being slung around like there would be on that.

I'll parrot the overheating issue, aircraft engines need airspeed more than just prop wash for cooling.



I'm not sure about that - it's just the crank/cam that is spinning - the pistons are still just going up and down in the cylinder sleeves.

[Linked Image]

But...here's probably a better idea from that perspective (the cooling issue gets worse). You probably also want to put some tape or velcro around your left pant leg. cry
[Linked Image]


....man, are we off topic.


Jake Kohl
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259758
05/21/13 03:42 PM
05/21/13 03:42 PM
Joined: Feb 2005
Posts: 4,118
Northfield Mn
Karl_Brogger Offline
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Northfield Mn
I understand the concept. But there's still going to be way more mass there than a flat four beemer, and those cylinders aren't going anywhere either.


I'm boatless.
Re: AC72 Oracle Team USA Spaceship has landed [Re: rehmbo] #259759
05/21/13 04:03 PM
05/21/13 04:03 PM
Joined: Jun 2002
Posts: 1,658
Florida Suncoast, Dunedin Caus...
catman Offline
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Florida Suncoast, Dunedin Caus...


Have Fun
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259760
05/21/13 05:19 PM
05/21/13 05:19 PM
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Posts: 3,969
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brucat Offline
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Encountered? No, no, no. Well past encountered...

Back on topic... I had an outstanding, long weekend at Madcatter. But, I don't care what the docs say, or what titles people have. If you think for one half of one second that Larry isn't in charge, I can't help you. Let's just say, they all know who signs their paychecks, or at least keeps funds in the account.

Mike

Re: AC72 Oracle Team USA Spaceship has landed [Re: brucat] #259768
05/22/13 09:27 AM
05/22/13 09:27 AM
Joined: Jun 2002
Posts: 1,658
Florida Suncoast, Dunedin Caus...
catman Offline
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Florida Suncoast, Dunedin Caus...
Originally Posted by brucat
Encountered? No, no, no. Well past encountered...

Back on topic... I had an outstanding, long weekend at Madcatter. But, I don't care what the docs say, or what titles people have. If you think for one half of one second that Larry isn't in charge, I can't help you. Let's just say, they all know who signs their paychecks, or at least keeps funds in the account.

Mike


Mike, We're just a couple out of thousands of a-holes with an opinion. It really doesn't matter what you or I think. I don't have anything invested in it other than a t-shirt and the time I spend viewing. Enjoy commenting here once and a while but certainly not going to argue about it.


Have Fun
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259770
05/22/13 09:59 AM
05/22/13 09:59 AM
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Posts: 2,490
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Philip
USA #1006
Re: AC72 Oracle Team USA Spaceship has landed [Re: Tony_F18] #259779
05/22/13 01:02 PM
05/22/13 01:02 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
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Jake  Offline
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Originally Posted by Tony_F18
Quote
US Sailing and America’s Cup Launch New ‘Start Sailing’ Website



PORTSMOUTH, R.I. (May 6, 2013) – US Sailing, the national governing body of the sport, has joined forces with the pinnacle event in sailing - the iconic America’s Cup - to introduce, inform and educate a new generation of sailors.

The new website at www.startsailing.org offers visitors an exciting and easy-to-follow introductory view of sailing, including information on the various types of sailboats, the basics of sailing, tips on how to get started and find access to boats and lessons, as well as other ways to get involved.


On a side note, US Sailing updated the multihull detail on www.startsailing.org (presumably from my email). They removed the negative stuff, added a little, and now it doesn't make much sense (cruising multihulls are easy to launch from the beach?)...whatever


Jake Kohl
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259780
05/22/13 01:09 PM
05/22/13 01:09 PM
Joined: Mar 2009
Posts: 932
Solomon's Island, MD
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samc99us Offline
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Solomon's Island, MD
IDK Jake this sounds fairly reasonable, still a tiny bit negative on the turning (I'd just delete that section): http://www.startsailing.org/index.php/multihull/



Scorpion F18
Re: AC72 Oracle Team USA Spaceship has landed [Re: Jake] #259781
05/22/13 01:28 PM
05/22/13 01:28 PM
Joined: Jun 2001
Posts: 3,116
Annapolis, MD
Mark Schneider Offline
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cruising multihulls are easy to launch from the beach...

I bet MOST of the world will understand that because they have seen the glossy bare boat advertisments of a cruising mulit tied up to a tree on some island resort beach...

Of course it is beach launched... You walk off the beach and launch your Gunboat.... QED!


crac.sailregattas.com
Re: AC72 Oracle Team USA Spaceship has landed [Re: Mark Schneider] #259784
05/22/13 03:32 PM
05/22/13 03:32 PM
Joined: Jun 2001
Posts: 12,310
South Carolina
Jake Offline
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Jake  Offline
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South Carolina
And I'm still not sure how the text is broken down into "What" and "why" and what follows.


Jake Kohl
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259785
05/22/13 04:37 PM
05/22/13 04:37 PM
Joined: Aug 2011
Posts: 774
Greenville SC
bacho Offline
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bacho  Offline
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Posts: 774
Greenville SC
Did everyone see this? The film about AC33, might be a worthwhile watch.

http://www.thewindgodsmovie.com/

You can buy the DVD or watch it on PBS

Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259787
05/22/13 07:57 PM
05/22/13 07:57 PM
Joined: Dec 2006
Posts: 2,490
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P.M. Offline OP
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Philip
USA #1006
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259789
05/23/13 06:23 AM
05/23/13 06:23 AM
Joined: Sep 2004
Posts: 2,584
+31NL
Tony_F18 Offline
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May as well post this here, nice looking toy:

Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259803
05/23/13 10:02 AM
05/23/13 10:02 AM
Joined: Jan 2008
Posts: 3,655
Portland, Maine
T
ThunderMuffin Offline
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Originally Posted by mummp


All those recommendations amount to "Sail 66% of the races that you were planning on sailing"

Bullocks. I hope my tickets are redfundable in case its blowing 23.5knots.

Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259811
05/23/13 10:49 AM
05/23/13 10:49 AM
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Posts: 2,490
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Hopefully, things are getting back to sailing. We should see ETNZ, Oracle, and Luna Rossa AC72 teams on the bay today. Let the games begin.


Philip
USA #1006
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259824
05/23/13 03:45 PM
05/23/13 03:45 PM
Joined: Aug 2007
Posts: 3,969
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brucat Offline
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Originally Posted by mummp


Some interesting stuff in there. Capsize, and it's officially game over...

Like you could recover a 72, and start racing in hopes of the other guy flipping? These aren't Hobie 16s... I'm pretty sure that no one sailing these is thinking about the race while the boat is on its side, and it's not like the other boat is going to be able to offer more help than the RIBs.

Mike

Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259829
05/23/13 06:41 PM
05/23/13 06:41 PM
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Posts: 2,490
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[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

[Linked Image]


Philip
USA #1006
Re: AC72 Oracle Team USA Spaceship has landed [Re: P.M.] #259833
05/23/13 09:33 PM
05/23/13 09:33 PM
Joined: Dec 2006
Posts: 2,490
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Philip
USA #1006
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