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To weak mainsail boom on the 47? |
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Peter-Blake 
Admiral of the Fleet 
Joined: 04 March 2008 Status: Offline Points: 2471 |
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 Posted: 31 December 2009 at 17:36 |
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The main on my 370 is about 43 sqm.
Do i need a boom from a Hanse 470 now?
 Edited by Peter-Blake - 31 December 2009 at 17:40 |
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Blake 370
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John Allison
Rear Admiral 
Joined: 23 November 2004 Location: United Kingdom Status: Offline Points: 742 |
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Posted: 01 January 2010 at 19:09 |
If you want complete bullet proofing, how about the profile from the 630's?
Seriously, I know my profile is strong enough as we've done the time and distance to demonstate that. So suggest all should wait to hear if Hanse have reduced the Sparcraft section on the 470's (or any other models) before worrying about replacement spars.
And no reason why anyone needs to accept uncontrolled gybes. We sail on the edge when racing and have managed to avoid the situation. Surely when in cruise mode sailing safe angles is not too hard to do - and for sure if you worry about this, add a boom brake.
Whoever is asking the Q's from Hanse - please keep everyone posted on the answers.
JOHN Edited by John Allison - 01 January 2010 at 20:10 |
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No longer a Hanse owner - but loved the one we had!
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David Ericksson
Sub Lieutenant 
Joined: 30 December 2009 Location: Stockholm Status: Offline Points: 14 |
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Posted: 15 January 2010 at 22:17 |
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Hi Pearl,
I am race sailor since almost 40 years in dinghies and keelboats, so I am well aware of how to gybe. However since it is only me and my wife sailing this 470, i know every mile travelled and we have not gybed carelessly one single time. So I am keen to beleive that the boom is too weak
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David
Hanse 470, Prima Donna |
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Timeout
Lieutenant 
Joined: 01 October 2009 Status: Offline Points: 28 |
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Posted: 18 January 2010 at 10:18 |
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Hi David
Have you got any feedback from Hanse on this matter?
rgds
Timeout
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Timeout
Hanse 470e |
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David Ericksson
Sub Lieutenant
Joined: 30 December 2009 Location: Stockholm Status: Offline Points: 14 |
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Posted: 08 February 2010 at 17:07 |
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Hi,
No I have received OK from my insurance compnay to replace the boom
David
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David
Hanse 470, Prima Donna |
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superliga
Rear Admiral
Joined: 25 April 2008 Location: Copenhagen Status: Offline Points: 590 |
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Posted: 09 February 2010 at 21:19 |
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David, thats nice to hear.
Did the insurance survey the boom or did they just OK replacement. If they suveyed the boom it would be interesting to learn what they found. Are you getting a boom withe same dimension or are you going for a 630 boom?  |
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PEARL - S/Y SUPERLIGA - HANSE 470 e - Hull #168 - hanse470.com
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John Allison
Rear Admiral
Joined: 23 November 2004 Location: United Kingdom Status: Offline Points: 742 |
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Posted: 10 February 2010 at 19:28 |
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Just looking back at the picture and wondering again what may have caused this crease in the boom.
I see the crease is directly over the mainsheet attachment point.
As I am not sure that point on the boom could ever hit a stay I can't help but wonder if you've ever held the boom out on port gybe using a preventer from the boom end - and then hardened up on the mainsheet?
I know when most people rig a preventer to the boom end, and is obviously quite normal to then haul in the mainsheet tight, to stop the boom moving about.
But with a boom end preventer, and a mid boom sheet, the loads are being applied in different directions...........
Especially if the sheet was tightened up using a powered winch.
Just wonder if this has ever been done and if so, if it might be one possible cause of the weakness shown?
JOHN Edited by John Allison - 11 February 2010 at 08:55 |
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No longer a Hanse owner - but loved the one we had!
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371-#235
Captain 
Joined: 14 February 2004 Location: Canada Status: Offline Points: 272 |
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Posted: 11 February 2010 at 21:04 |
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Here is a result an uncontrolled jybe during 30+ knots of wind while single handed on my 371. The insurance company has approved a replacement.
The second pic is of last November when I delivered a J44 from Newport Rhode Island to Tortola by way of Bermuda. A boom brake was an integral part of our equipment (or kit as you Brits would call it).
Needless to say - I've ordered one for Blondie!
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Bob
371-#235 "Blondie" |
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Timeout
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Joined: 01 October 2009 Status: Offline Points: 28 |
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Posted: 12 February 2010 at 08:50 |
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Can anyone recommend a boom brake solution which is suitable for a 470? I think the solution on the picture does not fit a 65sqm mainsail? |
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Timeout
Hanse 470e |
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Peter-Blake
Admiral of the Fleet
Joined: 04 March 2008 Status: Offline Points: 2471 |
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Posted: 12 February 2010 at 09:11 |
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@371#235
Just for my understanding: Did the boom hit the bb shroud in the uncontrolled jybe? It does not look like as the addidtional track for the sailcover does not show a hit What reef did you sail in 30+? Edited by Peter-Blake - 12 February 2010 at 09:12 |
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Blake 370
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Peter-Blake wrote: