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RDM and Cam Sails
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jingebritsen



Joined: 21 Aug 2002
Posts: 3307

PostPosted: Sat Jul 27, 2019 2:37 pm    Post subject: Reply with quote

naish had an rdm specific cam sail about a decade ago. it had a lot of luff curve. when a mast is bent that much, it becomes much more stable. does not matter what type it is.

i suspect the rdm will not match your sail. indeed, the cams may not stay attached.

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swchandler



Joined: 08 Nov 1993
Posts: 9465

PostPosted: Sat Jul 27, 2019 8:15 pm    Post subject: Reply with quote

As a long dedicated Wingwing customer, I have a late 2006 8.3 Hammer that I chose to use less the two cambers, but with the Gulftech 490cm RDM. The sail mast combination works quite well in light wind conditions. Even powered up a bit, the power and balance is very good.

I was undecided between going with a SDM or a RDM, but based on recommendations from Windwing's pro at the time, Devin B., I got a good heads-up on RDM. I have to admit though that John Chao gave me an excellent price on the mast when I bought the sail.
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dllee



Joined: 03 Jul 2009
Posts: 4558
Location: East Bay

PostPosted: Sat Jul 27, 2019 8:29 pm    Post subject: Reply with quote

Yup, Bill H. recommended I use RDM on the '93 Race sails on up.
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jingebritsen



Joined: 21 Aug 2002
Posts: 3307

PostPosted: Sun Jul 28, 2019 3:29 am    Post subject: Reply with quote

if i remember correctly, wind wing sails have lotsa luff curve.
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dllee



Joined: 03 Jul 2009
Posts: 4558
Location: East Bay

PostPosted: Sun Jul 28, 2019 1:11 pm    Post subject: Reply with quote

2003 and newer, after the split, more luff curve.
Pre '03, normal luff curve but designed for big riders, so RDM worked well for everyone including Devon at 215 lbs then.
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swchandler



Joined: 08 Nov 1993
Posts: 9465

PostPosted: Sun Jul 28, 2019 1:26 pm    Post subject: Reply with quote

Actually, it depends on what years you are talking about. I found that Bill Hanson overdid the luft curve only for a year or two, and only for a couple of models. I still have one of those sails, a 2004-5 6.3 Hammer which is a bear to rig well, and it's incredibly mast sensitive. I had a similarly sized 2003-4 Bash model that was even worse, a truly terrible design. Overall though, through the 20+ years I've owned Windwings, most were outstanding sails, and many are still a part of my sail quiver today.
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