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Jib whisker pole length |
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H8jer 
Admiral 
Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503 |
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 Posted: 01 June 2021 at 10:08 |
Hi Rock/Peter Did first see your post now. The 1 meter track is needed because just small adjustments to the sheet will alter the level of the whisker pole. I have a 28 sqm jib from elvstrøm and I waited for the right weather in our harbor to unfurl the jib when the wind was from behind. Then I saw where to roughly place the 1 meter track. I would agree that different sails will require different heights if a single point is used. But with the track it is no so important and if you see my picture you could perhaps estimate the position.
Edited by H8jer - 01 June 2021 at 10:12 |
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Hanse 370#487 30HP 3-cabin
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Rock
Commadore 
Joined: 19 September 2014 Location: Netherlands Status: Offline Points: 404 |
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Posted: 01 June 2021 at 12:05 |
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Thanks H8jer, clever solution with the 4mm nut.
Remains the question of rivets vs bolts (cutting thread). Peter
Edited by Rock - 01 June 2021 at 12:15 |
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Hanse 400e "M-square2" #0241
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H8jer
Admiral
Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503 |
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Posted: 01 June 2021 at 13:44 |
Hi Peter Stainless bolts? Monel rivets prevent corrosion when joining stainless fittings to an aluminum mast. I this case it is an alu track that will be up against an alu mast. In theory alu rivets should work but they are normally not anodized. So I would stick to Monel rivets.
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Hanse 370#487 30HP 3-cabin
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DJgun
Captain 
Joined: 04 April 2020 Location: SydneyAustralia Status: Offline Points: 287 |
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Posted: 21 September 2021 at 08:07 |
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Hi Peter,
I have a full length track for spinnaker pole, which is screwed to the front of the mast using M5 countersunk screws. The mast extrusion is less than 5mm thick., so a little small for M6 but OK for M5. If you decide to use screws it is much better to use a "Form Tap" which forms the threads in the mast instead of cutting them, resulting in a stronger attachment. The Form Taps are not cheap, but they are the best way to put Threaded holes in the mast. Note :The tap drill size is a little bit different to what is used for cutting taps too. I strongly recommend using Form Tap. Cheers DJ
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DJ.....Sailor Ordinaire
HIN DE-HANJ0331J708 |
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iemand
Admiral
Joined: 13 February 2004 Location: Germany Status: Offline Points: 1099 |
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Posted: 21 September 2021 at 12:02 |
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I took a Selden track with rivets on both sides.
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Hanse 312 MJ 2004 - Hanse 370e MJ 2007
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Rock wrote: