Broken extension collars

rangerider · Joined: 19 Jul 2009 Posts: 206

Last fall I broke 2 chinook plastic collars while out on the water which made for some interesting sailing prior to my figuring out what the problem was - the collars were not that old but in fairness were under a lot of tension on my 12.0 formula rig. Anyone know of a stronger (metal maybe) collar that will fit properly on my chinook extensions? Thanks.

U2U2U2 · Posted: Sat Mar 12, 2016 10:33 am Post subject:

Do you have SDM extensions ? Before any other thoughts ....

Suggest to call Chinook.

nw30 · Posted: Sat Mar 12, 2016 12:20 pm Post subject:

Or order direct from their website which you can now buy directly from.
http://chinooksailing.com/index.php/

rangerider · Joined: 19 Jul 2009 Posts: 206

No, the collars broke and they were practically new. I don't think chinook makes a different type. Even if they warranty the part I'm wondering if anyone knows of a different brand that makes a stouter collar that I could order. I've only ever had Chinook, no beef with them, just wondering what else is out there that is beefy/durable.

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

Just go back to the old pin and ring collar, like maybe Streamline still uses.
Do the internet search.

swchandler · Joined: 08 Nov 1993 Posts: 10588

I can say that the anodized metal ring and spring concept made by Fiberspar years ago with their carbon extension worked pretty well for me, but the downhaul pressure of a current 12.0 rig might even stress that design.

I'm thinking that you should probably take the design of chinook's classic plastic and pin design, and have the plastic component fabricated from a sturdy grade of stainless steel. Obviously, a bit more expensive route, but you might be able to spread out the set-up costs by having some quantity done, and then later selling them to interested folks in the future as an aftermarket upgrade.

rangerider · Joined: 19 Jul 2009 Posts: 206

Thank you, I am somewhat familiar with the streamline design. Are they plastic or is there a metal component as well? - i went on their website but it wasn't clear to me. The idea of making a stainless version of the chinook design is interesting but obviously something off-the-shelf would be easier.

U2U2U2 · Posted: Sat Mar 12, 2016 11:55 pm Post subject:

Pray tell
Are the EXT
SDM

bred2shred · Joined: 02 May 2000 Posts: 989 Location: Jersey Shore

He said he was rigging a 12.0 Formula sail. As far as I know, that would have to be a SDM extension.

Way back when, the base extensions used a solid stainless steel pin (1/4" diameter?) that held the collar in place. Then the companies (Chinook & Windsurfing Hawaii) switched to one-handed collars that used two short "half" pins which were not as strong. I don't know that I ever broke one, but certainly caused a few of them to deform, so I went back to the old style collars on my WH extensions. If you can find one of these old style collars, that would be the ticket. Otherwise, I believe Streamlied still makes this style of solid pin extension.

sm

rangerider · Joined: 19 Jul 2009 Posts: 206

Thanks all. Yes, SDM. I will see if I can order some streamlined collars then and see if they work with my chinook extensions - if not I can just buy a new streamlined extension for the 12.0 and I'll have some extra collars. As an aside I'm using factory spec settings with the sail but the tension is much higher than with my other sails - I broke downhaul lines as well - going to get a length of spectra line as well.