Mast raising

[tsmyth]

Recently, I read a short item on use of lines to provide support for the mast on a trailer sailer while raising or lowering. I think it was in PBO, but I cannot find it when I look through my past copies.

Was it in PBO? If so, can someone please give me the volme and page number?
Ray



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[bruce]

you can go to the ' macgregor sailboat home page and see their mast raising kit. basic is a gin pole/boom that acts as a lever and 2 side stays that are mounted and swing at same level and directly opposite of each other , attached perhaps 6' or more up the mast. the base if the stays should allow a straight line to be deawn thru them and mast piv hole/pin. this mount must be solid, not a short swinging something that can change alignment.

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[dralex]

It's in this months PBO ie the one with the Hunter Channel on the cover.

ALex

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[Jools_of_Top_Cat]

yes I think it is in the skippers sketchbook.

It seemed like a great idea and used the trailer winch to do the hard work.

I wonder if I could do similar on mine, albeit bigger and heavier, did it by hand once and almost died! but with better planning I would like to try it again.

<hr width=100% size=1>Julian

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[floatything]

Using the trailer winch is fine when you are launching and retrieving, but if you ever need to dip the mast to get under a bridge (like I do most times I sail) then you need to feed a line back to one of your main winches. I attach the spinnaker halyard to the apex of an 'A' frame that sits on the side decks (upright when the mast is down) and then have a line going from that, through a 3-1 pulley system, then back to the cockpit. My 11 year old daughter is able to raise / lower the mast on her own, with me only doing the final attachment of the forestay when it is up. Only snag I have found is a tendency for the shrouds to get caught on things like cleats etc.



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[paulburton44]

Every time any boat in our club goes to sea it needs to lower its mast.
it also needs to be a one man job (one on the mast and one on the helm)
26ft boats are about the limit for this. the key is to get the leverage either by a gin pole or A frame. Some people use a trailer winch (not on a trailer) other use a couple of blocks and rope.
The mast must be supported from sidewards movement, this support must be attached in line with the pivot of the mast, as said before.

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[William_H]

Hello Paul beg to dissagree that 26ft is limit for mast lowering. Here on Swan river bridge draught to the ocean is about 22 foot. There are hundreds of boats up to 70 foot that regularly lower mast underway and raise again. Not that it is pleasant but is doable and you get used to it. For sideways support I use cable clamps about a metre above the chain plates attached to these one either side is a line to a pulley on deckforward of chainplates then leads back to cockpit cleats. You do have to adjust as the mast makes it's ark downward to provide firm sideways support. In practice ona 21 ft fractional I have a tall mast support at the transom about 3.5 mtres and guide it quickly from standing on the cabin top into the support before some bugger comes past with a huge wake to set it all rocking. Pulling up is also done quickly.
if you can get away with lowering the mast to a little beyond 45degrees you can avoidd much of the heavy lift. Incidently a high field lever is magic in the forstay so you can connect it up then put the tension on very quickly. regards will PAS if anyone wants details of highfield lever email me.

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[tsmyth]

Do you mean the August edition? If so, I cannot find it in it. Must be going blind - I was warned!

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[tsmyth]

Thanks.

I had a look. Problem is I cannot see where teh side supports are attached. Obviously, they must be in line with the mast step. Also, how are they attached to the mast?

Ray

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[tsmyth]

Thanks,

Volume (issue) and page numbers - please?

Ray

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[AIDY]

PBO 453 Sept 2004 page 147 (skippers sketch book)

<hr width=100% size=1>/forums/images/icons/wink.gif <font color=blue> Regards Andy </font color=blue>

 

[tsmyth]

Thnak you.

Now I am puzzled. I have nto yet received the Septemer issue. So, obviously I could not have seen the item in it.

Logically, then, I must have seen it elsewhere - but where? Unless, I have ESP!!

I seem to recall that the idea was to connect three lines to a stainless ring. One is attached to a cleat forward, and one to a cleat at the stern. The third is coected to the mast (I don nto recall how far up or how attqched). With adjustment, the ring is intended to be a tthe appriate pivot point (i.e. in line with eh heal of the mast)

This, of course, is duplicated both sides.

Does this sound workable?

How far up the mast shoudl the approprite line be attached?

How should it be attached?


Ray


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[brownsox]

PBO No 410, Feb 2001 has a "trailer sailer special" with some good pointers about mast raising.

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