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Extension Question
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U2U2U2



Joined: 06 Jul 2001
Posts: 4377
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Thu Oct 19, 2017 7:56 pm    Post subject: Reply with quote

1. 6.9 luff is 469
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isobars



Joined: 12 Dec 1999
Posts: 18328

PostPosted: Fri Oct 20, 2017 9:39 am    Post subject: Reply with quote

If yours is a 2017 or 2018, they've changed it to 469. If you've ordered an earlier closeout (big discounts available), the 6.4 had a 467 luff while the 6.9 was 486.
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U2U2U2



Joined: 06 Jul 2001
Posts: 4377
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Oct 20, 2017 10:24 am    Post subject: Reply with quote

Oh..you do have a valid point, so you are correct with a new 2016 then..
Hardly likely it exists anywhere new.

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U2U2U2



Joined: 06 Jul 2001
Posts: 4377
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Oct 20, 2017 1:20 pm    Post subject: Reply with quote

I looked at my extensions, the only one that could, and probably would damage the Mast was the Chinook, used without the adjuster, in particular the RDM alloy.

None of these IMO opinion would, Severne, Hot Sails, Unifiber, and Streamlined can’t be used at all, no bottom top.

So like many other things , they are all different, errrrr mostly.

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ryanh50



Joined: 11 Aug 2011
Posts: 9

PostPosted: Sun Oct 22, 2017 6:37 pm    Post subject: Reply with quote

Thanks for all of the input guys! I definitely plan on using the collar and I ended up getting the Chinook extension. My next question may be extremely simple, but what is the second part of the collar for, and is it necessary? It slides right off and my other extension doesn't have this second piece.


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dhmark



Joined: 04 Sep 2007
Posts: 256

PostPosted: Sun Oct 22, 2017 7:30 pm    Post subject: Reply with quote

For SDM, mast fits over the plastic keeping pins in. For RDM, the mast sits on top of that second piece, which is necessary to keep pins engaged.
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ryanh50



Joined: 11 Aug 2011
Posts: 9

PostPosted: Sun Oct 22, 2017 7:34 pm    Post subject: Reply with quote

dhmark wrote:
For SDM, mast fits over the plastic keeping pins in. For RDM, the mast sits on top of that second piece, which is necessary to keep pins engaged.


Makes sense, thanks for the response
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joethewindsufa



Joined: 10 Oct 2010
Posts: 880
Location: Montréal

PostPosted: Mon Oct 23, 2017 5:13 am    Post subject: Reply with quote

can't the RDM mast keep the pins engaged and keep the collar off ??
for even less extension ??
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ryanh50



Joined: 11 Aug 2011
Posts: 9

PostPosted: Tue Oct 24, 2017 10:06 am    Post subject: Reply with quote

joethewindsufa wrote:
can't the RDM mast keep the pins engaged and keep the collar off ??
for even less extension ??


This is what I thought too but the mast doesn't fit around the piece with the pins. It just sits on top of the first piece if you take the ring off.
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dhmark



Joined: 04 Sep 2007
Posts: 256

PostPosted: Wed Oct 25, 2017 6:30 pm    Post subject: Reply with quote

I think the old style pin-and-collar setup has a lower profile than this current setup, as this newer plastic setup uses 2 sets of holes, the old one just used one set of holes and the next set above was visible. You'd have to call Chinook to see if the pin-and-collar is compatible; the holes just need to be the same size. Needing only one set of holes increases the range of adjustment too, can go one notch higher.
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