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Forums > Windsurfing General

mast top extensions

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Created by razzmatazz > 9 months ago, 15 Jan 2011
razzmatazz
NSW, 184 posts
15 Jan 2011 1:28PM
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anybody knows where to get one of these and how much they roughly are. I want to extend my 460 at the top to make a 490 or thereabouts. cheers

joe windsurf
1481 posts
15 Jan 2011 12:05PM
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hate ta tell ya this, butt extensions go on the bottom ...

Wineman
NSW, 1412 posts
15 Jan 2011 3:22PM
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Unless he means a turban top...which is effectively an extension at the top.

I have 2 x turban top sails.

snides8
WA, 1731 posts
15 Jan 2011 2:05PM
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razzmatazz said...

anybody knows where to get one of these and how much they roughly are. I want to extend my 460 at the top to make a 490 or thereabouts. cheers


sorry i dont know where you can get them from.
i am not aware if any manufacturers make them.
a few guys here( including myself and slowboat) make them out of old top sections of masts that where broken etc.
you need to be a little handy as you will have to ensure the tip will fit over the top of your existing mast. then you just need to glue/epoxy a stopper inside the tip at the required length to give you a 300mm extention.
hope this helps.
they are ideal for lighter riders who may need a slightly softer mast.

nosinkanow
NSW, 441 posts
15 Jan 2011 7:42PM
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I'm still procrastinating about doing the same thing if I get a larger sail, that is make a 460 into 490. You can get them, I was enquiring about them a few months ago, there is an aluminium one that fits on to the top. Haven't seen it but was described as tapered with a spigot that fits into the top of your mast.

Good for lighter sailors but not so good for heavier, it softens the mast from what I've researched and for heavier sailors it means it will spill more air due to the twist. I'm in the neavier class at 100kg and the idea is OK as I'm thinking of a 8.5-9.0 as a very light wind cruising sail on a longboard and I'm not looking for blinding performance.

Contact Dieter at Sunshine Sailboards - Caloundra, he might still have one.

razzmatazz
NSW, 184 posts
15 Jan 2011 8:40PM
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nosinkanow said...

I'm still procrastinating about doing the same thing if I get a larger sail, that is make a 460 into 490. You can get them, I was enquiring about them a few months ago, there is an aluminium one that fits on to the top. Haven't seen it but was described as tapered with a spigot that fits into the top of your mast.

Good for lighter sailors but not so good for heavier, it softens the mast from what I've researched and for heavier sailors it means it will spill more air due to the twist. I'm in the neavier class at 100kg and the idea is OK as I'm thinking of a 8.5-9.0 as a very light wind cruising sail on a longboard and I'm not looking for blinding performance.

Contact Dieter at Sunshine Sailboards - Caloundra, he might still have one.


Same here. want to set up a light wind sail as well and any performance of the rig will probably exceed my ability. I have read though that while maybe the stiffness is not the same as a 490 it increases by about half the difference between a 460 vs 490. particullary if you use a long bottom extension. anyway worth a try.

nosinkanow
NSW, 441 posts
15 Jan 2011 9:00PM
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razzmatazz said...
Same here. want to set up a light wind sail as well and any performance of the rig will probably exceed my ability. I have read though that while maybe the stiffness is not the same as a 490 it increases by about half the difference between a 460 vs 490. particullary if you use a long bottom extension. anyway worth a try.


I don't think the curve would change, I'd be reluctant to go too high with the bottom exension too, if it were me I'd use the same lower extension as used with the 460 so the boom slots in the big sail stay put (shouldn't be any higher?) and raise the tip only....but what do I know. Cheaper than buying a 490 anyway...you be the guinea pig and tell me what you think.

Mobydisc
NSW, 9029 posts
15 Jan 2011 9:17PM
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I've got a spare to section mast. Can anyone explain how I could turn it into a top mast extension? It would be great to be able to extend my 460 mast to rig bigger sails.

razzmatazz
NSW, 184 posts
15 Jan 2011 11:10PM
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MY PLAN NOW IS TO FIT AN EXTENSION 'OVER' THE TOP END OF MY 460. mIGHT TRY WITH ALLUMINIUM FIRST OR MAKE SOMETHING UP OUT OF FIBREGLASS ONLY.sorry for caps noticed too late. or cut of a 300mm length top of a spare/broken mast and adapt it.

and i reckon it doesn't change the curve as such but the stiffness. So my theorie is if you have a flex top sail with a constant curve mast or similar you should actually just get the right result. anyhow try i will

Gidget
NSW, 104 posts
16 Jan 2011 10:32AM
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razzmatazz said...

anybody knows where to get one of these and how much they roughly are. I want to extend my 460 at the top to make a 490 or thereabouts. cheers


Dieter showed me one last year at Sunshine Coast Sailboards.

wham70
NSW, 44 posts
16 Jan 2011 3:02PM
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Hi guys I was crusing on the net and discovered this mast extension has anyone tried one or willing to give it a go and let me know ,It's gotta be cheaper than a mast.www.surfstore.co.uk/north-carbon-extender-p-122.html

razzmatazz
NSW, 184 posts
16 Jan 2011 4:37PM
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wham70 said...



Hi guys I was crusing on the net and discovered this mast extension has anyone tried one or willing to give it a go and let me know ,It's gotta be cheaper than a mast.www.surfstore.co.uk/north-carbon-extender-p-122.html




they are almost 80 pounds + postage so I reckon approx. $200. A new 55% mast you can get for $300 up depending on brand.

wham70
NSW, 44 posts
16 Jan 2011 4:54PM
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Yeah I know there expensive in pommy land . If you can buy them there you should be able to buy them here ,maby a bit cheaper?

AUS666
89 posts
17 Jan 2011 4:21PM
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Another option is build you're own, get hold of a snapped bottom section and follow;

carbonsugar.com/construction/the-10-step-carbon-extender/

Also the chaps at 'Wind, Surf n Snow' should have them too.

wham70
NSW, 44 posts
17 Jan 2011 11:29PM
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back in the old days we cut a section out of an old boom and slid that on the top of the mast ,crude but affective but a bugger to get off.

Auswind
WA, 398 posts
Site Sponsor
18 Jan 2011 1:03PM
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Severne make a 490 Tip Extention to suit a 460 mast. They are available from Windforce or Second Wind in WA, or Windsurf n Snow if you're in NSW. The RRP on this is $125.

Mobydisc
NSW, 9029 posts
18 Jan 2011 4:25PM
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Do they fit non Severne masts and SDM masts?

tobyhodgso
WA, 300 posts
18 Jan 2011 1:56PM
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shame to admit it but have a 25 cm extension from vacuum cleaner tube with timber whacked in as a stopper, top shaped to fit sail head.
that makes my 460 and extension into a 510 and now I run a 9, 7.5, 6.6,5.5 and 4.5 on 1 mast !

Auswind
WA, 398 posts
Site Sponsor
19 Jan 2011 10:41AM
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I haven't tested it in a non-Severne SDM mast but I can tell you though that the diameter of the ferrell is 26.6mm. A slight bit of sanding may be required to get the correct fit for a different branded mast.

Cheers,
Auswind

switch101
QLD, 381 posts
19 Jan 2011 12:42PM
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neilpryde also have acarbon extender that fits on the bottom of your mast

Sailhack
VIC, 5000 posts
19 Jan 2011 3:38PM
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tobyhodgso said...

shame to admit it but have a 25 cm extension from vacuum cleaner tube with timber whacked in as a stopper, top shaped to fit sail head.
that makes my 460 and extension into a 510 and now I run a 9, 7.5, 6.6,5.5 and 4.5 on 1 mast !


Up until recently, I used a 460 bottom and a 430 top with an empty silicon tube sliced to pack the join! Amazing to what lengths we'll go to get on the water!



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"mast top extensions" started by razzmatazz