chinook masts

Justin, Pretty sure Troppo has or is using one on his KA,s , give him a yell.

Ezzy masts are pretty good value. Constant curve and indestructible. Just a thought.

I have both the Carbon 60 and Carbon 90 chinook RDMs. I originally used them for my 2012 KA Koyote 7.4 and found the Carbon 60 to work pretty well. According to the specs, the bend characteristics are similar to KA masts but... when I tried the carbon 90 it felt WAY stiffer than the c60 and my 100% carbon 460 KA skinny... inconsistency probably.

thanks guys, i'll track down troppo as well.

so far including this thread and the pm's it's a yes for the Chinook.

kevin, i reckon there's a point where you gotta go with your instinct and take a product back if you're not convinced. gear can always be outside of spec. especially when it's cheaper. this is the thing that worries me the most.

ikw, I've read so many negative comments about the ezzy mast and the ka sail that i just wouldn't take the risk. do you know what the bend curve is of ezzy?

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Gestalt said..

ikw, I've read so many negative comments about the ezzy mast and the ka sail that i just wouldn't take the risk. do you know what the bend curve is of ezzy?

I 'think' that using the larger Ezzy RDMs 490 and possibly 460 in KAs is not quite right. I have a 7.5m and 8.5m concept from 2009 (I think) and they were too loose in the leech for my liking. They didn't rig any better on the Powerex 490 SDM or 460 Severne Blueline either, so I had them recut. I personally think the sails weren't cut quite right originally, but I didn't have a KA mast to really check them on.

Now, they rig well, but I think the 490 is too soft for a 8.5m, so I think I am losing some power in the 8.5m. There is not much extra in the 8.5m compared to the 7.5m

yeah what ezzy are saying is anything from 10-17 bend curve will work but what's their own mast bend? not really a fan of ezzy sails.

obviously they make a good mast from all reports.

downside, it's more expensive than the Chinook and even more importantly it's not the right bend curve. if I can't get a mast within 1% of the right bend curve then i'll just get a KA mast.

andy I would be keen to try your ezzy all the same. then I will see how it compares to my powerex. so I know where it's at.

for my money if a recommended mast doesn't work then it's out of spec and the manufacturer should refund or replace it. I know of a guy around these parts that has measured his masts in the past and sent back the ones that were out of spec.

there are some brands around that claim to be up to spec.

some mast brands vary across their range. for eg, no limitz 430 original skinny is 13.5% but the 400 and smaller are all around 12% so yeah curves vary.


I think it's the manufacturers that won't publish specs that have the QA issues.

this is on the KA website

We have selected a manufacturer in Italy. The build quality and finish is excellent and every mast is machine tested to ensure compliance to the specified IMCS stiffness and bend curve. The masts are numbered and all data is recorded. All masts are constructed using the latest composites technologies to achieve the perfect strength to weight ratios.

It's good to use the mast the sail was designed for if you can.