Base extensions

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Hooksey
Hooksey
WA
558 posts
WA, 558 posts
23 Apr 2012 4:58pm

does anyone have experience with base extensions such as Severne's BASE EXTENSION 40 (http://www.severnesails.com/2012/products/rig_component.php)

I plan on getting one and pop it into my 460 mast to be used for a 8.5 koncept which require a luff of 501..

Pros?
Cons?
Duarability?
etc

Bondalucci
Bondalucci
VIC
1580 posts
VIC, 1580 posts
23 Apr 2012 8:18pm
Those things are ridiculously over priced for what they are.

I've made a few in my time using the bottom section of a broken carbon mast and a narrower section that sleeves into it from slightly higher up.

They work a treat, although you'll end up with a mast that is slightly too flexible for the luff length.

This is not a problem so long as the wind conditions are light, or the sailor is light.
paddymac
paddymac
WA
943 posts
WA, 943 posts
23 Apr 2012 8:45pm
If you want to DIY - carbonsugar.com/construction/the-10-step-carbon-extender/

or you could use a 10 cm tip extension - much easer to make but will give you a different curve to the base option. A bit of broom handle and a busted mast, Bob's you uncle.
Mark _australia
Mark _australia
WA
23684 posts
WA, 23684 posts
23 Apr 2012 10:09pm
paddymac said...

A bit of broom handle and a busted mast, Bob's you uncle.


Sounds like Uncle Bob is not somebody I'd like to meet...
pepe47
pepe47
WA
1382 posts
WA, 1382 posts
24 Apr 2012 7:41am
Hooksey, I use an NP extension bacause the pulley and the base match, both being at right angles to the mast. The base you're referring to suits thier sails, which are horizontal to the mast, when you tighten the downhaul the resulting crossover of downhaul rope can become a pain.
nebbian
nebbian
WA
6277 posts
WA, 6277 posts
24 Apr 2012 9:32am
pepe47 said...

Hooksey, I use an NP extension bacause the pulley and the base match, both being at right angles to the mast. The base you're referring to suits thier sails, which are horizontal to the mast, when you tighten the downhaul the resulting crossover of downhaul rope can become a pain.


I used to think that the pulleys had to be in the same plane, until I watched this vid:



When you get it right you can downhaul till the pulleys just about touch, and the lines don't cross over at all.
ikw777
ikw777
QLD
2995 posts
QLD, 2995 posts
24 Apr 2012 12:04pm
That knot he demonstrates at the end is well worth learning. It's dead easy and you'll never want a download tool again.
gazza
gazza
WA
647 posts
WA, 647 posts
26 Apr 2012 4:13pm
ikw777 said...

That knot he demonstrates at the end is well worth learning. It's dead easy and you'll never want a download tool again.


Down haul tool, just use the harness hook works a treat
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