Forums > Land Yacht Sailing Construction

Mast Construction

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Created by Nikrum > 9 months ago, 8 Sep 2010
Nikrum
TAS, 1972 posts
8 Sep 2010 9:06AM
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Ok! Where does one get T8 Aluminum?? Is it produced by a single manufacturer or just a term used by that manufacturer? It would appear that there are several close approximations.
Ron

Gizmo
SA, 2865 posts
8 Sep 2010 10:31AM
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Here is a link to the Capral catalogue.... about page 25 is the round tubing, also note that most branches of Capral don't carry a FULL range of sizes all the time ...

www.capral.com.au/resources-downloads/catalogues-brochures/


Nikrum
TAS, 1972 posts
8 Sep 2010 11:18AM
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Ta Gizmo, I will give them a whirl.
Any thoughts on Sail Board Masts??
Ron

Gizmo
SA, 2865 posts
8 Sep 2010 10:51AM
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Nikrum said...

Ta Gizmo, I will give them a whirl.
Any thoughts on Sail Board Masts??
Ron


In what regard? for sailboard masts

Nikrum
TAS, 1972 posts
8 Sep 2010 6:53PM
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For use on Land Yachts. Mind you that one is becoming redundant as I you have not long pointed out. Capral has a branch in Hobart and their Ali isn't too expensive.. Thanks for that! Mind you I have to buy 5 lengths to build a mast..
Ron

Gizmo
SA, 2865 posts
10 Sep 2010 7:12PM
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Nikrum said...


For use on Land Yachts. Mind you that one is becoming redundant as I you have not long pointed out. Capral has a branch in Hobart and their Ali isn't too expensive.. Thanks for that! Mind you I have to buy 5 lengths to build a mast..
Ron


With the present Australian aluminium shortage / availability situation unless you are intent in building a Class5 (which has a metal mast in the class rules) a sailboard mast is perhaps the only way to go for most yachts these days.
And with that said there is SO MUCH variation in masts from fibre glass, carbon fibre, thick / thin, stiff or soft. It just depends what your after and what you can find.
And this is the reason a few months ago I mentioned a yacht with class5 specs and a fibre glass / carbon fibre mast.

landyacht
WA, 5921 posts
10 Sep 2010 8:34PM
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Gizmo said...

Nikrum said...


For use on Land Yachts. Mind you that one is becoming redundant as I you have not long pointed out. Capral has a branch in Hobart and their Ali isn't too expensive.. Thanks for that! Mind you I have to buy 5 lengths to build a mast..
Ron


With the present Australian aluminium shortage / availability situation unless you are intent in building a Class5 (which has a metal mast in the class rules) a sailboard mast is perhaps the only way to go for most yachts these days.
And with that said there is SO MUCH variation in masts from fibre glass, carbon fibre, thick / thin, stiff or soft. It just depends what your after and what you can find.
And this is the reason a few months ago I mentioned a yacht with class5 specs and a fibre glass / carbon fibre mast.



is there a shortage ?

Nikrum
TAS, 1972 posts
11 Sep 2010 12:13AM
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Thanks Yachty

I have found a supply of T6 & T8 price seams reasonable and cheaper than Carbon.
Have a look at my layout. Same as for Desert Eagle, pretty much.
Ron

Gizmo
SA, 2865 posts
11 Sep 2010 8:26AM
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landyacht said...

is there a shortage ?


Not of Aluminium but of availability, In Adelaide the stocks of tube has been become quite low in the sizes we are looking for and this is because of the cost of warehousing of all the sizes at all the locations. The Capral warehouse here scaled down its operations several years ago and now only carries the most popular sizes of extrusions, Ullrich Aluminium is the same, if you want a specific size they can order that elsewhere but minimum is 1 crate approx 20-50 tubes, if you want only 1 or 2 tubes it may take up to a month depending on interstate stock transfers.

Gone are the days of look, touch and feel before you buy

Nikrum
TAS, 1972 posts
11 Sep 2010 10:51AM
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Ain't it sad though.
That is why I buy over seas for most of my stuff. Cheaper, I can get what I want when I want it and know the quality is the same anyway. Why pay someone else for what you can do for yourself. If it fails then that is a bit tough. Warranties aren't worth the paper they are written on anyway as everything under warranty usually has to be paid for to shipping it back to the parent company. Printers for instance, I recently bought a Canon iP4700 and changed it to a CISS (Continuous Ink Supply System) if it packs it in because of that the warranty is wiped but if it went wrong under normal conditions it would cost me the first $70 to ship it back damned thing only cost $99 so it would be just as convenient to throw it away and buy another. I bought a Fly Rod Blank from the States (GLOOMIS Top of the Line stick) and I bust it.
$100 to get it back there, they would crawl up my back side with a Microscope and probably not replace it anyway. Solution; Warranty worth zip, shipping cost lost, cut my losses and give GLOOMIS a bad name as they deserve. rodandfly.com.au/
I have found rods now manufactured to the same standard and only cost a quarter the price of a GLOOMIS.

rodandfly.com.au/

never again, lesson learned.

Now back to the Ali. That will have to wait until the time I need it. I named the sizes to the rep and he reckoned he can get it. If not then I will have to go for a $400 Carbon stick (Shees! I hope not).
Have you had a Deko at my latest Re-draw of a re-draw of a re-draw of my Hull plan? Input would be nice.
Thanks
Ron








Gizmo
SA, 2865 posts
11 Sep 2010 10:34AM
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My suggestion is go ebay or the local trader .. I bought 2 masts for $75 (for both) and paid $100 for a sailboard, 2 sails & 2 masts.
Have a talk to the local sailboard guys down on the beach as people that are heavily into the sport always want the latest techo stuff, and will part with their old stuff for just a few $$$

Nikrum
TAS, 1972 posts
11 Sep 2010 11:21AM
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Thanks for that Gizmo,
I've been reading some other threads on masts and have come to the same conclusion. I've been looking at a new Carbon 460 and an wondering how to do a mast extension. My sails have a 4900 length.

Can you come back on the like yesterday???
Ron

Nikrum
TAS, 1972 posts
11 Sep 2010 11:30AM
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Gizmo, that was actually a 430 so it would need nearly a meter of extension? Is it still feasible?
Ron

Gizmo
SA, 2865 posts
11 Sep 2010 12:25PM
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Others have used a vacuum cleaner pipe (BUT ask the missus first) but what about a bit of stiff PVC "pressure" pipe from the hardware store or plumber and jamb fit to the top of the mast...

Hiko
1229 posts
11 Sep 2010 11:03AM
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You can also extend the stiffener at the bottom downwards.......

Nikrum
TAS, 1972 posts
11 Sep 2010 2:18PM
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Ok, Thanks lads,

I am now looking at some second hand 100% Carbons. $400 for a new 550 is good buying but a little on the ex'y side. but there is a bunch of bit 'n' bobs as well for another $100.
As for the extension ideas I was thinking along the lines of a base extension similar to the Boarders type only home built??????? OK! So it looks like Gizmo has picked up on this one Thanks Bud..
I'm onto them, you gave me that link in other Topic Line.. They have the stuff I want or can get it.. But from my line of reading the Ali' ones tend to be a bit stiff.

So you guys can punch in your thoughts on that one as well.... It might save me from buying a lot of unsuitable gear.
Ron



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"Mast Construction" started by Nikrum