Chinook mechanical joint failure

wsurfn1426 · Joined: 20 Mar 2004 Posts: 223

Novaan:

Thanks for posting about this. I windsurf with a single bolt tendon UJ, but use the mechanical for the foil board for easier coupling/uncoupling. I am not sure why this topic got off point, but if you have a recent Chinook mechanical UJ check those threaded ends. I initially did not, but mine were very easy to unthread when recently checked. Potential disaster averted with some red Loctite hopefully.

NOVAAN · Joined: 28 Sep 1994 Posts: 1549

Glad I saved you a potential swim or a lost rig.

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

My two have slight friction, so easy to tell if they get looser.

killeen_john · Joined: 04 Aug 2006 Posts: 61

Just noticed these from Chinook and looks like a neat blend of tendon and mechanical joint:

https://chinooksailing.com/collections/new-products/products/2-bolt-pro-flex-mast-base-us-base-cup

https://chinooksailing.com/collections/new-products/products/2-bolt-pro-flex-mast-base-euro-pin-ex

manuel · Joined: 08 Oct 2007 Posts: 1158

Looks well done possibly extend life of tendon too.
Need to see what kind of wobble develops between top part and black plastic piece.

dllee · Joined: 03 Jul 2009 Posts: 5329 Location: East Bay

Always wait a year before buying new ideas?

grantmac017 · Joined: 04 Aug 2016 Posts: 946

Hopefully they will sell just the top piece, last thing I need is another complete base.

dhmark · Joined: 04 Sep 2007 Posts: 376

That top black plastic piece is suspect. I’ve not been happy with some of Chinook’s switch to plastic over the years, eg boom pins, extension pins, boom collar material. Function has always been good.

merriam2 · Joined: 25 Oct 2013 Posts: 33