Forums > Windsurfing General

Drop Shape masts

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Created by Obelix > 9 months ago, 15 Sep 2010
Obelix
WA, 1128 posts
15 Sep 2010 6:51PM
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Can anyone tell me what is a "Drop Shape" mast?

Pugwash
WA, 7719 posts
15 Sep 2010 7:03PM
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Mast with std diameter base that tapers quickly to be more like rdm (but not)...

Obelix
WA, 1128 posts
15 Sep 2010 7:16PM
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Oh, so a hybrid? Standard base, thin otherwise.

Can it rig on a standard sail?

easty
TAS, 2213 posts
15 Sep 2010 9:38PM
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Yes. My main mast is a North Sting 30% drop shape, which I've used for 8/9 years, it seems to work with most sails (except any designed specifically for rdm). I don't think they have the increased wall thickness of rdm masts.

kato
VIC, 3506 posts
15 Sep 2010 10:02PM
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Used one for a long time on a Ka 5.8,you will have to adjust the cams a bit to fit, but it works well

Obelix
WA, 1128 posts
15 Sep 2010 8:15PM
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I have an opportunity to buy a 430 XC55 and was hopeful that it would come to this.
No cams on my 5 and 6 m sails, so I'll contact the guy. Hopefully hasn't sold it yet.


sausage
QLD, 4873 posts
15 Sep 2010 11:15PM
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Some booms (like a maui sails) can't clamp tight enough and a rdm shim is too small to fit so you may have to make some modifications i.e. adding a rubber sheath around mast making it thicker where boom connects.

nbr
QLD, 297 posts
16 Sep 2010 8:25AM
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I use a Radz drop shape with a Severne overdrive and are having problems with the top cam wearing a groove into the mast because the rollers are too wide for the mast.I am looking to see if I can purchase a smaller cam.

Obelix
WA, 1128 posts
16 Sep 2010 1:59PM
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Good points guys.

Forgot about the boom. My smaller sails dont' have cams so no issue there.
I may re-think this as I already have a 30% carbon 430 which works well.

Thanks for saving me some money. Just brought in a sail and a 460 mast, and my wife is giving me an evil eye...

fullmoon
WA, 314 posts
16 Sep 2010 4:30PM
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nbr You can fit a rdm cam to the top of the 3 battens and it works just fine with a North Platinum.

sboardcrazy
NSW, 8224 posts
16 Sep 2010 9:05PM
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Ok I know Ill get red thumbed for this & I know Ive been told before but senility has kicked in..again.. whats RDM stand for? ( regular diameter mast..? )

firiebob
WA, 3172 posts
16 Sep 2010 7:13PM
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RDM = reduced Diameter mast



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"Drop Shape masts" started by Obelix