Thanks everyone. This is very helpful. I’ll guess I should try all three masts and see which feels better.
Cheers,
Pavel
grantmac wrote:Severne pre-2014 are stiff top sails. Powerex are CC, Chinook are CC to slightly flex. Neither a great choice.
I'd boost the 400 up there and see if the battens will rotate at all.
I resisted the concept for a while but it's worth picking a mast curve and getting RDMS. Uses is fine unless it's getting shipped from Maui, but from a Gorge swap no problem.
Pavel wrote:I just purchased a 5.7 Severne Blade (2009). Luff is 438cm.
Which mast should I use?
1. 430 Chinook epoxy fibreglass (Recommend size, but heavy) came with the sail.
2. 400 Powerex 40% carbon (lightest, but the extention will be set near maximum, 38/45) it’s about 15 years old, more likely to snap?
3. Powerex 460 75% Carbon. ( light, but will require the head strap to be extended, which some people say is not recommended)
Thanks,
Pavel