Wire or dyneema halyard?

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Posts: 38
Joined: Thu Oct 02, 2014 11:41 am

Wire or dyneema halyard?

Post by perhamh » Mon Jul 02, 2018 9:15 am

I have a 2.5mm wire main halyard, without a halyard lock. Would dyneema (or similar) be
-similarly non-stretch
-same diameter or bigger
-lighter or heavier?

If stretch is an issue how does a masthead lock work on an internal halyard? What's the most reliable? - almost equally important to me are
- works first time on hoist
- sail stays up, and
- sail comes down when wanted without rolling the boat on its side.

Any suggestions or comments?

Posts: 268
Joined: Sat Feb 02, 2008 12:24 pm
Location: Plymouth, Devon, UK

Re: Wire or dyneema halyard?

Post by chrishampe » Mon Jul 02, 2018 8:28 pm

Yes, there are masthead locks that can be fitted internally as long as the mast has a big enough diameter towards the top end.
I have the selden part no: 511-202-01 on my mast with the halyard led back into the mast. It does need an alarmingly big hole cut into the mast to get it working. The halyard is wire with a rope tail.

If you go with dyneema use a 2-1 halyard otherwise the mast compression will result in the main dropping down a bit as the mast bends and compresses.
Chris Hampe
GBR 340 Monkey's Uncle

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