Centre plate wire

[bbdave]

I have a galv. centre plate which has a slot for the which is then raised and lowered by a winch at the moment the wire is stainless I would prefer to use galv to save risk of corrosion but as it will need a soft eye will the galv just crack off when under tension? Or is there an alternative to wire?


Dave

 

[viva]

Have you thought about using Dyneema instead of wire. It is stronger, won't rot and is easier to handle. I replace the lift wire on my boat with Dyneema and it's great

 

[Seajet]

Dyneema is being used increasingly for this sort of application; personally I'd worry about chafe, what about barnacles in the keel slot & casing ?

With stainless wire on a winch, beware s.s. doesn't like tight radii; the Anderson 22 ( vertical lift ) keel winch uses galvanised wire, though some people mistakenly fit stainess ' cos' it's the best '...

 

[sarabande]

aren't there some worries about stainless wire in sea water ? Oxygen deprivation ?

 

[alahol2]

aren't there some worries about stainless wire in sea water ? Oxygen deprivation ?

My Stag uses 7x19 stainless on the keel lifting winch. It has a swaged fork on the end which attaches to the plate with a clevis pin. When withdrawn the cable is not in the water so I don't think corrosion is a major factor unless the plate were left in the down position.

 

[vyv_cox]

aren't there some worries about stainless wire in sea water ? Oxygen deprivation ?

There is plenty of dissolved oxygen in seawater, down to huge depths. How would fish live otherwise?

 

[Even Chance]

I use galvanised wire on my E-boat. It is removed after lowering and locking down the keel, so it doesnt sit in the water all summer. It has a worm driven drum winch under the deck in the forecabin that houses the wire, and is galvanised wire, as I already knew about the problems associated with stainless.
I would however, have used SS if there was nothing else available locally for the "right price".....

 

[bbdave]

I would prefer galv to ss as it would be galv to galv contact the joint is clear of the water whilst on the mooring just lowered for sailing I just want to prevent any corrosion before it starts the centre plate is around 8mm thick so I guess there would be no problem with it possibly cutting dyneema? And what knot would be best for a soft eye?

Just to add we have a very high ss to galv corrosion due to the high mineral content in the water.

Dave

 

[lw395]

I might use a 12-braid dyneema and splice it.
I would cover the wearing part in heatshrink.
Maybe even line the hole with a plastic bush or fairlead?
Or if the lift wire can be shackled on, maybe the shackle can be insulated using a plastic bush?

 

[bbdave]

I think I only have room for tying a knot but I guess a tucked blood knot will be good I use it for tying hooks to fishing line I will make a couple out of Dyneema to try as its cheep and I can replace it easily so any wear can be caught early I can pop in a safety line to just in case.

Dave