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Problems with Boom H400 |
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Kristian Jespersen 
Sub Lieutenant 
Joined: 10 October 2025 Status: Offline Points: 2 |
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 Topic: Problems with Boom H400Posted: 10 October 2025 at 15:36 |
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Ever inspected the underside of your boom? I did. The fixing of the kickstrap was broken. it could brake off and destroy the profile of the boom. This summer i met an other H400 - with the same problem. Sparcraft is aware of the problem, the new one is cast, twice as thick, and has six rivets in stead of four. Sorry no picture, can't make it that small
 Buy a new one to be sure, it is not diffecult to change!
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Mark_J1
Rear Admiral 
Joined: 12 March 2013 Location: Dover&Medway UK Status: Offline Points: 690 |
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Posted: 11 October 2025 at 00:31 |
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Yes, changed ours about 4-5yrs ago. FYI if you have the early style Sparcraft bails for securing blocks to the boom, these also need swapping out (or monitoring in the meantime).
The old ones were essentially just a “V” shape and could pull out under load given time (the V shape could narrow under load). The new ones have the top of the V closed and prevent the ends of the bail closing and coming out.
Mark |
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Hanse 400e "Grey Goose" Hull #31
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jeb
Captain 
Joined: 05 May 2014 Location: Sweden Status: Offline Points: 339 |
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Posted: 13 October 2025 at 10:34 |
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I changed both the vang fitting and the mainsheet fitting to the casted versions.
Vang fitting: 35242206046 Mainsheet fitting: 47503318656
Edited by jeb - 13 October 2025 at 13:50 |
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Jesper
Hanse 400e |
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