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RDM and Cam Sails
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txfx1027



Joined: 03 Nov 2015
Posts: 2

PostPosted: Fri Jul 26, 2019 12:36 am    Post subject: RDM and Cam Sails Reply with quote

Hi,

I have a 2016 Mauisails titan gsx 7.0m I'm wondering if I can run on an RDM mast. I've been running it on an SDM without any problems but i have a newer nicer RDM mast of same size. it's just too enticing to be able to take one mast out for my 5.8-7.0 sails.

Any recommendations or rules of thumb in general for rdm/sdm and cam sails?

Some sails seem to have a specification of rdm or sdm. this is not one of those sails. does that imply cross-compatibility?

thanks!
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Ugly_Bird



Joined: 04 Nov 2008
Posts: 242

PostPosted: Fri Jul 26, 2019 8:23 am    Post subject: Re: RDM and Cam Sails Reply with quote

txfx1027 wrote:
Hi,

I have a 2016 Mauisails titan gsx 7.0m I'm wondering if I can run on an RDM mast. I've been running it on an SDM without any problems but i have a newer nicer RDM mast of same size. it's just too enticing to be able to take one mast out for my 5.8-7.0 sails.

Any recommendations or rules of thumb in general for rdm/sdm and cam sails?

Some sails seem to have a specification of rdm or sdm. this is not one of those sails. does that imply cross-compatibility?

thanks!


Really depends on the camps. You can eyeball where the cams are sitting on the mast, take the cams out of the sail and test them against the mast. If they roll nicely around, they good to go (given that the mast stiffness and all the other related bla-bla-bla are matching). If they are grinding against the mast, there is no compatibility. I'm not familiar with Mauisails and do not know if they provide various cams. Ezzy does, each cammed sail comes with a bunch of cam pockets and cams, so you can select the right combination.

Andrei
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boardsurfr



Joined: 23 Aug 2001
Posts: 1195

PostPosted: Fri Jul 26, 2019 8:41 am    Post subject: Reply with quote

Another problem you may encounter trying to rig the sail on a skinny is that the cams pop off easily. Sails that support both SDM and RDM usually come with two sets of cams.
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isobars



Joined: 12 Dec 1999
Posts: 19172

PostPosted: Fri Jul 26, 2019 9:45 am    Post subject: Re: RDM and Cam Sails Reply with quote

txfx1027 wrote:
it's just too enticing to be able to take one mast out for my 5.8-7.0 sails.

OTOH, it's nice not to have to tear down the 7.0 to rig the 5.8.
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U2U2U2



Joined: 06 Jul 2001
Posts: 5043
Location: Shipsterns Bluff, Tasmania. Colorado

PostPosted: Fri Jul 26, 2019 10:17 am    Post subject: Reply with quote

At the top of this page is a tab, Contact.
https://www.mauisails.com/2018/titan
Or
Sunset Sailboards

Tel: [+1] 510-919-0913

My impression is it has a wide sleeve to accommodate a SDM, the cams may or may not rotate smoothly on a smaller curve Skinny, but what do I know

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4Boards....May the fours be with you

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http://4boards.co.uk/
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grantmac017



Joined: 04 Aug 2016
Posts: 793

PostPosted: Fri Jul 26, 2019 11:02 am    Post subject: Reply with quote

Is it a 430 or 460?
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dllee



Joined: 03 Jul 2009
Posts: 4487
Location: East Bay

PostPosted: Fri Jul 26, 2019 11:39 am    Post subject: Reply with quote

Try it.
If the cams are located on the sail, you get under rotation but it works.
If the cams don't fit the mast diameter you get more wear.
If the cams fit and are on the batten, it might work if the battens are 1.5" longer than what's needed for STM.
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kevinkan



Joined: 07 Jun 2001
Posts: 1556
Location: San Francisco

PostPosted: Fri Jul 26, 2019 1:35 pm    Post subject: Reply with quote

try it and see what happens. the Titans were designed around SDMs, so you may not get enough cam pressure with an RDM. Big RDMs sometimes suffer from being too soft in the bottom, so you might get less profile/shape down low.

if you're industrious, you can also possibly fashion some adapters to make the cams fit your RDM or 3D print some new ones.

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Kevin Kan
Sunset Sailboards, San Francisco CA
http://www.sunsetsailboards.com
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http://www.facebook.com/sunsetsailboards
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txfx1027



Joined: 03 Nov 2015
Posts: 2

PostPosted: Fri Jul 26, 2019 5:24 pm    Post subject: Reply with quote

THANKS for the excellent info!

good to know at least i'm not a complete knob if I do decide try it out!!
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dllee



Joined: 03 Jul 2009
Posts: 4487
Location: East Bay

PostPosted: Fri Jul 26, 2019 6:00 pm    Post subject: Reply with quote

Top Windwing sponsored sailors back in the early '90's put RDM's into their race 4 cams and gained in all performance criteria.
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