This is a trivial question, but it drives me crazy, and maybe somebody
can help me.
For my dinghy/davit system I have 4 triple blocks – two for each side.
All of them are for 3/8 line. Now here is the problem:
Every time when I put the dinghy down and again back the line is
twisted and become entangled. Every time I have to spend time to fix
it – and really drive me crazy.
I use polyester yacht braid.
Thanks in advance
Mada

On Jun 16, 4:29 am, wrote:
....
Every time when I put the dinghy down and again back the line is
twisted and become entangled. ...

Hmmm. I don't know, but have you tried coiling your line into your
other hand? I suspect you're twisting the line as you coil it. You
could test this by throwing the tails out on the deck and running your
hands down them to take out the twists and then using the davits. If
you're problem gets much better or goes away then the coiling is your
problem. If not, beats me...

--Tom.

Mada,

One other thought.

The falls of my davits become more twisted if I leave a half turn around the
cleat as I lower. I always used to do this as it took some of the weight but
now I take the line all of the way off the cleat before lowering.

Ansley Sawyer
SV Pacem

wrote in message
...
This is a trivial question, but it drives me crazy, and maybe somebody
can help me.
For my dinghy/davit system I have 4 triple blocks – two for each side.
All of them are for 3/8 line. Now here is the problem:
Every time when I put the dinghy down and again back the line is
twisted and become entangled. Every time I have to spend time to fix
it – and really drive me crazy.
I use polyester yacht braid.
Thanks in advance
Mada

I suspect it hs something to do with the way you have reeved (roven?)the
line through the blocks as braidline itself has no tendency to twist under
load.
Two triple blocks on each hoist sounds excessive. However if you use these
you have to fix the end of the rope at the top and reeve the line so that
the fall emerges from the centre sheave of the top block This prevents any
tendency for the pull on the fall to twist the whole assembly and for the
same reason said fall must finally emerge also from the centre sheave of the
bottom block If you do not reeve this system correctly the bottom block will
tend to turn over while you are hauling in the slack after launching the
dinghy and I suspect that this is the root of your problem.

It is more usual for boat hoists to have a triple block at the top and a
double block at the bottom since the fall must always emerge from the top
block. Therefore the double block at the lower end has a becket on it onto
which the other end of the rope is spliced and you must then reeve the rope
so that it emerges finally from the centre sheave on the top block, You do
not need swivels on the blocks for a dinghy hoist and if you have swivels
that may also be part of your problem

Just curious...are the sheaves of your two blocks (per side) parallel to
each other or perpendicular?

If parallel, this may not be causing the problem you are asking about, but
it will load the blocks unevenly and can cause other problems.

And as Roger said, better to have non swiveling blocks here.

For long lines, I either figure 8, or coil with a reverse loop. Anything to
keep the twist out.

wrote in message
...
This is a trivial question, but it drives me crazy, and maybe somebody
can help me.
For my dinghy/davit system I have 4 triple blocks – two for each side.
All of them are for 3/8 line. Now here is the problem:
Every time when I put the dinghy down and again back the line is
twisted and become entangled. Every time I have to spend time to fix
it – and really drive me crazy.
I use polyester yacht braid.
Thanks in advance
Mada

On Jun 16, 6:29*am, wrote:
This is a trivial question, but it drives me crazy, and maybe somebody
can help me.
For my dinghy/davit system I have 4 triple blocks – two for each side.
All of them are for 3/8 line. Now here is the problem:
Every time when I put the dinghy down and again back the line is
twisted and become entangled. Every time I have to spend time to fix
it – and really drive me crazy.
I use polyester yacht braid.
Thanks in advance
Mada

Gyn dobry Polski:

To reave a 4 sheve purchase use (two dozen & a bakers dozen)
That is, reave shives 2-4-1-3 in that order.

dobra notes
ZZzzzzzz Bob