Discussions (1313)

Bottlescrews

view profile

blueachilles says:

We have adjusted Blue's mast rake, bringing it forward to try to reduce the weather helm.

The aft lower, port shroud bottlescrew now has about 3/4" - thats 0.75", not 3 or 4 - of screw in the bottle, so to speak.

Is that enough?
10:23AM, 27 March 2012 PDT (permalink)

view photostream

Andrew Curry says:

Can you post a picture?
91 months ago (permalink)

busy home [deleted] says:

If its a good snug thread, not a worn wobbly one,
Put a toggle thingy on.
Originally posted 91 months ago. (permalink)
busy home edited this topic 91 months ago.

view photostream

Andrew Curry says:

If you are not sure use one of these

www.mailspeedmarine.com/rigging/blue-wave/stainless-steel...
91 months ago (permalink)

busy home [deleted] says:

Thats wat I said...
91 months ago (permalink)

view photostream

blueachilles says:

Andrew, I'll post a photo after the weekend, but a toggle thingy looks ideal.

I love all this tech speak.
91 months ago (permalink)

view photostream

Slycat777 says:

I read somewhere that its only the top few threads that take all the load?
91 months ago (permalink)

view photostream

rothwell_neil says:

Technically the load on the threads decreases exponentially as you go down the thread away from the top. however if the load is such that plastic deformation takes place (put too much load on) rather than elastic deformation then the top threads will deform and spread the load further down the thread. In other words, whilst the top threads take the strain, if put to work they then pass the load on to their buddies further up. Team work.

So more thread is best when you may really need it. A toggle thingy would get my vote.
91 months ago (permalink)

Would you like to comment?

Sign up for a free account, or sign in (if you're already a member).