Forums > Windsurfing General

Severne blade 5.7

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Created by N1GEL > 9 months ago, 3 Jan 2014
N1GEL
NSW, 861 posts
3 Jan 2014 2:30PM
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There's a 5.7 Sev blade for sale in the forums and I'm wondering how it'd go on a 93ltr JP FSW out on botany bay. I've got a 460 constant flex mast and I wont waste my time sailing in less than 20kts. Spose i need a shorter pole. I want a sail that's going to hold between 18-25kts. I haven't uphauled in 15 years and the JP I've got feels too light to try (at 85kgs). Had my first sail in 15 years a week ago and ****ing glad i can still get up without an uphaul. . I love the look of this sail and like the write ups. What do you guys recon?

PhilSWR
NSW, 1104 posts
3 Jan 2014 2:53PM
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The Severn Blades are sweet- I've got a 5.7 and use it in the 14-20 odd knot bracket on a 99 litre wave board -great combo. But, as you touched on, will need a smaller mast than a 460. A 430 is on the money.

N1GEL
NSW, 861 posts
3 Jan 2014 3:00PM
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Sweet. I think I've found my one-size-fits-all sail. Just gotta find a cheap secondhand mast. Thanks!

N1GEL
NSW, 861 posts
3 Jan 2014 3:01PM
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PS. How heavy are you Phil? And, how's the sail cope in gusts?

PhilSWR
NSW, 1104 posts
3 Jan 2014 3:24PM
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I'm 78 kgs. Assuming your mast is the right curve for the sail, they rig nice and absorb the gust quite well- for a wave sail. If you have a constant curve mast and want a more spongy / forgiving sail, the North Dukes are great. In a freeride sail, the Loft 02 / Oxygens are tops also. There's two 5.9's on Seabreeze atm.

Hope this helps.

pwatts22
NSW, 57 posts
3 Jan 2014 4:40PM
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This might be a dumb question but if you already have a constant curve mast at 460 long can you hacksaw 30cm of the bottom and make it a 430 and would it work the same? those powered masts are a good masts and it seems a shame not to use it.

N1GEL
NSW, 861 posts
3 Jan 2014 5:37PM
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Select to expand quote
pwatts22 said...
This might be a dumb question but if you already have a constant curve mast at 460 long can you hacksaw 30cm of the bottom and make it a 430 and would it work the same? those powered masts are a good masts and it seems a shame not to use it.


It's crossed my mind mate, but can't find anything in the formus in favour of doing so

Surfinfreak
QLD, 288 posts
3 Jan 2014 6:40PM
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Not sure if you can or not, but if you try, then at least wear a dust mask and cut it in a well ventilated area. Carbon dust is very bad for your lungs!

Sputnik11
VIC, 972 posts
3 Jan 2014 7:40PM
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PhilSWR said..

I'm 78 kgs. Assuming your mast is the right curve for the sail, they rig nice and absorb the gust quite well- for a wave sail. If you have a constant curve mast and want a more spongy / forgiving sail, the North Dukes are great. In a freeride sail, the Loft 02 / Oxygens are tops also. There's two 5.9's on Seabreeze atm.

Hope this helps.


I have a Loft O2 and love it. Its a 6.6, but really handles the gusts well. I have it out in up to about 20. I weigh 75kgs.

barn
WA, 2960 posts
3 Jan 2014 4:55PM
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2035 said..

pwatts22 said...
This might be a dumb question but if you already have a constant curve mast at 460 long can you hacksaw 30cm of the bottom and make it a 430 and would it work the same? those powered masts are a good masts and it seems a shame not to use it.


It's crossed my mind mate, but can't find anything in the formus in favour of doing so


Cutting the top off a tree does not make it bend like a sapling..



flanagaj
WA, 177 posts
3 Jan 2014 7:25PM
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Don't rig the Severne sail on a constant curve mast. I had my Gators rigged on constant curve masts for about 5 years. I recently swapped all of my constant curve masts for a set of used Gaastra stiff top masts. I could not believe the difference in feel and stability that I got from the using the correct masts

If you use a constant curve mast you will probably find that the leech twists off early, leaving you with a lot of curve and belly in the lower part of the sail. It might feel rather grunty with so much curve in the lower part. On the flip side it may well feel perfectly fine.

PS - Cutting 300mm off your 460 mast is a really stupid idea. The mast will be too stiff for the sail and will most likely make it feel rubbish

paddymac
WA, 936 posts
3 Jan 2014 9:19PM
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Select to expand quote
pwatts22 said..

This might be a dumb question but if you already have a constant curve mast at 460 long can you hacksaw 30cm of the bottom and make it a 430 and would it work the same? those powered masts are a good masts and it seems a shame not to use it.


This is a bad idea. 430 masts are softer (bend more). You may not be able to get a long extension up the mast anymore as the taper will start far earlier.

busterwa
3777 posts
3 Jan 2014 10:53PM
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You need a 4.30 witha and extention longer than 21 as stated!



MudSkipper80
17 posts
4 Jan 2014 5:47AM
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You only need a 12cm extension for that sail, the 21 refers to the stiffness of the mast

pwatts22
NSW, 57 posts
4 Jan 2014 10:17AM
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I was asking the question regarding the mast as I have recently broken the bottom of a mast and I shortened it by 10cm to cut away the cracked area plus a little more, rigged it sailed it and it seems fine, can't tell any difference, I have noticed in this forum previously one of the highest ranked gps sailors frequently cutting bottoms of masts to have minimal extension and wanted to know where the line can be drawn regarding how much can reasonably be cut off without unduly effecting performance.

busterwa
3777 posts
4 Jan 2014 10:55PM
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Mud tell us more i was unaware of that. So the luff is 442-430? I was looking at that today on my rig and it didnt add up?

R1DER
WA, 1459 posts
4 Jan 2014 11:42PM
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Mast required is 430 long with a stiffness of 21
sails luff is 442 cm long therefore 430cm mast plus 12cm of extension = 442cm.

busterwa
3777 posts
5 Jan 2014 12:18AM
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windsurfing for 6 years didnt know that .Cheers rider.

NotWal
QLD, 7428 posts
5 Jan 2014 10:56PM
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pwatts22 said..

I was asking the question regarding the mast as I have recently broken the bottom of a mast and I shortened it by 10cm to cut away the cracked area plus a little more, rigged it sailed it and it seems fine, can't tell any difference, I have noticed in this forum previously one of the highest ranked gps sailors frequently cutting bottoms of masts to have minimal extension and wanted to know where the line can be drawn regarding how much can reasonably be cut off without unduly effecting performance.


Cutting off 100 mm wont make any difference except for the need for 100mm extra extension. But if you do it to a mast that is longer than the recommended mast just to make it fit you end up with a mast that is too stiff. If a high ranking gps sailor is doing that it may be because he is unusually heavy and loads the mast more than normal so the bend he gets with a stiffer mast approximates the bend an 80kg sailor gets with the designated mast. Otherwise his sail performance is probably suffering. As I understand it the heavy weights of this world (like AA) use the recommended mast.

An ideally trimmed sail does much of the work for you. You sheet in and weight your harness and just go. The ideal sail just flexes away at the top in the gusts and you don't have to vary your sheeting or your weight distribution. You just hang on and go. If the mast is too stiff you can't do that. The gusts pull you up on your toes and you have to actively control the sheeting. You know that overpowered feeling? As a lightweight I'm familiar with it :)

R1DER
WA, 1459 posts
6 Jan 2014 2:27PM
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busterwa said..

windsurfing for 6 years didnt know that .Cheers rider.


no worries buster



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"Severne blade 5.7" started by N1GEL