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Symmetric pole systems

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Medway Maniac View Drop Down
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    Posted: 08 Jan 08 at 8:55pm

Tried single-ending our Laser 2 pole - great except that it made heavy weather gybes even more iffy.

I recall that a lot of the top L2's used to attach the uphaul to a bridle connected to each end of the pole. This clearly eliminated pole-bending - which is a major problem with the bendy L2 pole (we solved that by using a (strictly speaking illegal) 505 pole), I was never clear how they stowed the pole alongside the boom without clipping it to something at the mast end, unclipping again when hoisting, which would be a faff; also, the downhaul would need thinking about.

We tried the ramp and loop, but it is always necessary to make sure that the rope is in the ramp slot when pushing out, and it's sometimes reluctant to come out again when taking the pole in. Then again, sometimes it jumped out on its own - the loop has to be just right, then it wears through...

The original hook system was pretty unsatisfactory, though, and we ended up with Jim C's keyhole on the uphaul-downhaul arrangement, with a lump for it to butt up against in the middle of the pole (* we used a plastic bullseye fairlead for want of anything better). It's a great system if you just want to hoist or drop - you don't have to consider the uphaul-downhaul at all - just push the pole out or bring it in. To gybe, twist the pole to get the bullseye the other side of the keyhole, then push out, end for end.

On an earlier boat we had a sort of amalgam of the ramp and keyhole methods, wherein the keyhole fitting was held between two lumps (bullseyes) in the middle of the pole when deployed. This had the benefit that gybes were easier, but you had to twist the keyhole into/out of  place every hoist/drop. Overall worse than the simpler one-lump system.

As Jim says, it's not perfect, but the keyhole + one-lump is the best I've used.

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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 08 at 9:48pm

Cheers Medway, good description of all methods. So the keyhole (thanks for the link Jim) one lump thingy is not quite the same as the ramp but very similar and as Jim said less complicated. Keyhole 2 lump much the same as the ramp, but has to be engaged/ disengaged for the hoist drop and end for end in the gybe.

 OK strategy finalised, we will try the keyhole one lump as this doesn't need extra pop rivet holes drilled left right and center. Hook release cord on the outside of the hoop so as not to loose the pole.  

We will try the trolley system as a last resort, should be able to jury rig it with duct tape just to try it out.

Thanks all



Edited by GK.LaserII
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Lukepiewalker View Drop Down
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Post Options Post Options   Quote Lukepiewalker Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 08 at 10:27pm
I have to say I never had any trouble with the ramp engaging when the pole was deployed. And in spite of my own prejudices I have never had trouble with one releasing again on the retraction. Don;t want to be asking silly questions but did you mount the ramp on the top of the pole or the side, as they only really work if mounted on the side...
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jan 08 at 10:39pm

I've actually used the ramp system on two boats - my own and a Wayfarer I crew at opens, and on both the ramp was to the side (threatening the jib, as someone else pointed out), but it in both instances it  required a positive effort to disengage, as opposed to the keyhole which simply slides out along the pole.

Basically, you have to pay attention to the rope loop on hoists and drops, while the keyhole is self-tending.But no doubt slicker souls than I take it all in their stride.

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Post Options Post Options   Quote redback Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 12:01am

In my Scorpion days I successfully used a pole without a downhaul - but you had to have twinning lines and be very carefull to use them in a blow.  The great advantage of this system was that the pole could stow along the boom, on either side, and was prevented from flopping about by some strategic velcro. 

However now I sail a somewhat faster boat I can see thet this made the gybes a bit tricky because the pole had to be removed just before.  Now that I appreciate how speed through the gybe makes things easier I would use a system which allowed me to just gybe and then sort it all out afterwards. 

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Post Options Post Options   Quote Chew my RS Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 7:12am

Do Laser 2 rules allow you to fiddle with the system - I thought it was very strict one-design (not that it matters for club racing)?

PS Nice photo's on this thread!

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Medway Maniac View Drop Down
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 11:26am

The L2 rules are very free when it comes to the uphaul-downhaul, which given the inadequacy of the pole is a real boon (I wonder if Vanguard L2 poles are any stiffer?).

Come to think of it, had we not been using a now-illegal, stiff 505 pole on the L2 (one of the top boys was allegedly using a J24 pole before the rules were tightened!), I'd maybe have persevered with the single-ended pole setup, which obviates pole bending.

Then again, as Redback points out, speed through the gybe is vital and for that the single-ender is a disaster, so perhaps the bridle-slung pole is the real answer - no bend and still a double-ended pole. Worth the fiddle at hoist & drop time, and the price you pay for Laser's under-speccing. Perhaps explains why the top boats were using bridles when the class was at its peak

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Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 6:39pm
Originally posted by Chew my RS

Do Laser 2 rules allow you to fiddle with the system - I thought it was very strict one-design (not that it matters for club racing)?

PS Nice photo's on this thread!

Laser II class rules:-

 7. Spinnaker Pole

    If fitted, shall be stored on the boom using any or all of the following : clips, supports, shockcord and lines. Lines may be used for a ‘trolley system’ but not for a spinnaker pole launcher.
    19. Spinnaker Pole
    1. The spinnaker pole and fittings attached thereto are unrestricted, except that it shall be made of aluminium alloy, shall not exceed 2.5m overall length including fittings and shall not exceed 45mm in diameter excluding fittings.
    2. A line or tags may be attached to the pole to aid opening.
    3. An adjustable external spinnaker pole uphaul and/or downhaul may be fitted using lines and/or shockcord and fittings. The method of rigging and control of the uphaul/downhaul system is unrestricted except for the following:-
      1. The controls shall be led to the mast and/or deck and shall not be led into the cockpit or aft of a line bisecting the shroud plate.
      2. The uphaul shall be led to a block or turning eye on the front of the mast anywhere below the jib halyard turning block.
      3. The uphaul/downhaul shall not be capable of being used as a ‘spinnaker pole launcher’

 I suppose the best system is the one that suits the individual sailor, personal preferance. I need to try out all of these ideas to see which one suits.

The Current UK Champ has a single ended system with no downhaul, I think he uses the reaching cleat to keep the pole down. Personally I don't like to use the cleat all the time as it makes fine adjustment of the spinny difficult for the crew.

The pic I posted is part of the Rosenfeld collection, I'll scan another when I've got a min.



Edited by GK.LaserII
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Medway Maniac View Drop Down
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Post Options Post Options   Quote Medway Maniac Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 6:46pm
Looks like the pole has been de-restricted, in which case my advice is to use the keyhole setup and if you find the pole too bendy buy a 505 pole.
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Post Options Post Options   Quote Lukepiewalker Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jan 08 at 8:42pm
Hmmm... I'd forgotten one thing. You don't have a foredeck area to hide complicated systems of elastic and stuff away...
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