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Ricky 8th February 2008 03:37 PM

Rigging a Gator 6.5 on 460
Thinking about buying a Gator 6.5 07. The luff is 460 and rec mast is 430. Is it possible to go with a 460 mast? I think 30 cm extension is pretty much..isn't it?

Roger 8th February 2008 09:20 PM

Hi Ricky,
No, 30 cm is not really "pretty much" extension.
The 6.5 Gator will probably rig OK on a 460 mast, but you won't get the full performance and tuning range because the 460 cm IMCS 24-26 mast will be too stiff for a sail designed for a 430 cm IMCS 21-23 mast.
The top of the sail will not "twist off" correctly as the mast won't bend enough under the same amount of downhaul.
Many sails use up to 38-40 cm of extension to achieve the correct luff length and bend characteristics deemed necessary in the design of the sail.
Most tall mast bases are in the 42-45 cm range at the top (longest) setting so 30 cm is certainly not "over extended".
I've seen a few carbon extensions snap off at the adjustment rings, but if you use a good quality alminum mast base you should have no problems at all.
It may be that the designers used the 430 Blue Line RDM in the 6.5 '07 Gator. The '08 Gator recommends a 460 cm Blue Line SDM. which may be a change from the '07 design.
Hope this helps,

Roger 8th February 2008 09:56 PM

Hi again Ricky,
OK, I got the '07 Severne archived website to download.
I could not determine if they were specifying the 70% Carbon Blue Line 430-21 RDM,
or the 75% Carbon Blue Line 430-21 SDM (Std. dia . mast) for the 6.5 '07 Gator.
Perhaps someone form the Severne Team can clarify which mast the sail was designed for, but I'm reasonably sure either one will work pretty well.
I've rigged and sailed a few 7.5 m2 Gators in the past 3 years, and they are nice. Good power, light feel, well made.
Hope this helps,

Ricky 11th February 2008 05:31 PM

Hello Roger

Thank you for your answers. I hope we can get that clarified what mast should be used. RDM or SDM...

Roger 12th February 2008 12:42 AM

Hi Ricky,
I checked with the CAN/USA Severne distributor, and the answer was that in 2007 there was a big push to make the Gator work on both the SDM and RDM masts, so you should be fine either way.
Hope this helps,

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