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PostPosted: Tue May 19, 2015 8:05 pm 
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Joined: Sun Jul 27, 2003 7:27 am
Posts: 159
Location: New Castle County Delaware, U.S.A
2014 Mirage Oasis
Taking out the standard fins to be replaced with SR Turbo fins ;)
First one came out ok.
Second one wouldn't budge eventually it did but then just kept spinning, upon further inspection and a lot of revolutions i noticed the brass was spinning here take a look see.
https://youtu.be/rgSuGxuVdkc
Third and Fourth masts came out with out incident.

I have already been advised that it ought to be a warranty issue and the sprocket needs to be replaced.
I am just posting this thread to make it easier to find this issue. I'll keep you-all updated.


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PostPosted: Wed May 20, 2015 12:32 am 
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Joined: Sat Nov 12, 2005 10:46 pm
Posts: 3017
Location: Escondido
rwehuman wrote:
I want to be on the water this weekend, I thought I would ask the right way to deal with this size in consistency. tap? Die? what size exactly? small pipe wrench and force it in crossing your fingers the threads line up? you tell me... : )
You won't want to use a pipe wrench -- a Crescent wrench on the flat spots is the right way to install the mast. If you look at the threads closely you will notice they are custom cut -- don't try your tap and die set. Go to the dealer and swap your sprocket for a new one. That's what warranties are for. Take your "fat" mast and make sure it fits. If not, swap your mast for a new one. If you're not comfortable installing the new sprocket, ask your dealer to do it for you.

If you can't do this by the weekend, put your old fin(s) back on and it will work for the weekend, though you'll get a little rock & roll action with one long and one short fin -- it won't hurt anything on the tandem (I wouldn't recommend this on the smaller singles -- probably more rock & roll than you would like).

Make sure your new sprockets are fully seated (a dry run marking the seating depth helps). They're supposed to fit tight. Use Locktite Blue even if you think you don't need it. Without it, your new masts will eventually un-thread and fall out at the most inconvenient time. 8)


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PostPosted: Wed May 20, 2015 5:08 am 
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Joined: Sun Jul 27, 2003 7:27 am
Posts: 159
Location: New Castle County Delaware, U.S.A
Very helpful. Thank you.


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PostPosted: Wed May 20, 2015 8:29 am 
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Joined: Tue May 27, 2003 12:44 pm
Posts: 15035
Location: Oceanside, California
This is a well known issue... We have changed the molded-in brass shape and instructed the factory to use less Blue Loc Tite.

_________________
Matt Miller
Former - Director of Parts and Accessory Sales
Warranty and Technical Support
Hobie Cat USA
(Retired 11/7/2022)


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PostPosted: Sun May 31, 2015 8:46 am 
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Joined: Sun Jul 27, 2003 7:27 am
Posts: 159
Location: New Castle County Delaware, U.S.A
Mirage drive sprocket Autopsy.......... I hope this helps answer questions.

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