Genni at the boat show
Thank you Jon and Richard for having the time and patience to explain your spinnaker pole launching system, (at least four times, not counting the pulling of strings to see what went where), the new rudder stock and canting rig.
Sorry, should be Genii! And I looked it uo to ensure I spelt it properly!
Jon showed me over Shebazzle's bits on Sunday, and I was yet again reminded of the hours and hours of ingenious thought that Jon had put into his creation. This is what Merlin Rocketry is all about. The spi pole system is really effective, and can be retro-fitted quite easily, and without the need to shell out £350 on a twin spinno device.
I also loved the dinghy show and was hugely impressed with the highly infectious enthusiasm displayed by both Jon and Richard. That spinnaker pole system looks REALLY good. No puller to fight with or forget either!! Unfortunately I arrived when Richard was halfway through explaining it to someone and I didn't have the heart to ask him to repeat everything. Both Jon and Richard seemed very keen that people should feel able to retro-fit the system to their own boats. I wonder if someone could be persuaded to write up a description of what ropes went where. It actually looked pretty simple (just some "outside the box" thinking) but I would hate to miss some obscure but essential detail if I tried to do it myself.
Andy Hay - Business as Usual
BAU will be sporting some Genii style mods this season, including new transom (thanks Mr Insurance Man - cannot recommend Bluefin highly enough), pole launch / puller combo (linked into the one-string), carbon integrated rudder fittings (I have the prototype rudder stock) and low aft buoyancy tank. Also going for split aft bridle main with twin tiller extensions, just for fun. You'll all be pleased to note that there are no bilge keel (Rule change anyone?) or hull modifications this year!!
I have been asked for pics of the "musketeer" (all for one) pole launcher. Lots of people were snapping away, including most of the journos, so I am sure we will see them in various articles soon. Andy Rice also shot some video that will be on his Sailjuice site (www.sailjuice.com). If anyone has any other pics please feel free to post them here!
...or you could just take your boat to JT and ask him to fit it for you.
That was my "boat of the show" just for the pole system but add the neat tank and the canting rig and nothing else came near it for innovation.
Can anyone point me in the direction of some pics? Couldn't make the show :(
Chris Martin....another one..
Definitely my stand of the show. I have got to thank Richard and JT for explaining no end of questions that i have long wanted answers to such as the pros and cons of jib overlap and trim tab centreboards...and why rake and rig cant works...and how spreaders are set up...i could go on. Sincere thanks to Richard and JT. Chris
Richard, I took quite a lot of photos of Shebazzle's pole launch system. I haven't had time to post them anywhere on the web yet, so I'll email them to you, and to anyone else who wants them.
Keith - I wonder if it might be an idea to email the photos to Mags so he can put them on the Merlin website? I believe his email address should be in the committee section of the site.
Richard S - will do. I have now posted a functional diagram of Jon's & Richard's system on my website. See below. If there are any mistakes or omissions, please let me know ASAP.
Great diagram Keith!
I've had some camera-phone pics from Martin Hughes, which I will post later today unless Keith/anyone sends me some better images.
Keith - thanks very much for the diagram, it's very helpful. I'm just puzzled by a couple of things.
Just to confirm, we are talking of twin poles here, and they presumably have uphauls at the outer (far or forward) end?
Keith - you're a star for that diagram. Only question is how many times the shock cord goes back and forth along the boom - I thought it was a continuous piece for both sides.
A continuous piece of return elastic makes the best sense as you're never going to want to deploy both poles at once. It also tightens up the retention of the inactive pole whilst one pole is deployed. Was that elastic INSIDE the boom? It looks to be mounted ON TOP of the boom in Keith's diagram. It would be preferable to me to have it on top - I just wondered whether there were any PRACTICAL downsides to an external mount.
Oh dear, I thought that my diagram might raise a few questions that I could not answer.
Fribbs, you are right - Jon confirms that the hip joint is a Spiro bit. As it's Spiro it's probably expensive. I think I might be able to source an alternative at a reasonable price. Watch this space.
Avoid those flying poles. 3 possible approaches:
Chris - I believe that in the second option you describe from the black boat, the small ring on the elastic attached to the lowers is to help pull the knuckle out of the Spiro fitting when retracting the pole. The Spiro fitting seems to have a tendency to keep hold of the knuckle which prevents retraction. On your own system which retains the elastic "ramp" which we currently use, have you experienced the dreaded "pole-end-in-the-eye" scenario that JT has avoided with his tubes?
PHOTOS! Thanks Keith.
RE:>> On your own system which retains the elastic "ramp", have you experienced the dreaded "pole-end-in-the-eye" scenario?
RE:>>the small ring on the elastic attached to the lowers is to help pull the knuckle out of the Spiro fitting when retracting the pole.
Thanks Keith for posting the diagram and photos of yet another LSD* from JT bringing deep joy to all Merlin sailors.
Richard - Thanks for your continued commentary on this system. Since I am about to cut into my beautiful wooden decks and don't want to make the wrong decision, I wonder if you could throw some light on the pros and cons of putting the through-deck sheaves either on the centreline or out at the gunwale?
Now we have a new "one string" that deals with both pole launch, snodger and puller all in one. I suggest we make it pull on the jib barber-hauler too!
One of the problems Dave and Jonny had with their launcher last year was that with the boom off the centre line the natural path of the pole is out to windward rather than towards the forestay. Has the Musketeer or other variants solved this issue?
A bead on the guy keeping the snodger forwards makes a huge difference. It keeps the ring which runs on the guy within 2 or 3 feet of the clew on the kite. We were using a simple self launching pole on Armed Forces at the nationals, not having a proper spiro fitting, we found that the guy knots were never in the right place, but we intend to persevere with it.
Andy Hay - Business as Usual
Richard - JT fitted two of the old style Proctor metal mast sheave thingies on the centreline on our beautiful wood decks on BAU. Basically, a double deck sheave when the puller would normally go.
Thanks for that Andy. That would seem to make the through-deck sheaves closer to the mast than on Shabazzle (and less than the 700mm on the drawings)but if it's good enough for JT and good enough for BAU it's good enough for me! It also means less damage to the foredeck. So - I'll just go and sharpen those chisels. Any feedback you can give after playing this weekend would be MOST welcome Andy! Thanks again.
I noted that the sleeves on the end of the boom were held open with a continuous piece of fine elastic from the top outer forward point of the sleeve , along and up around the mast, above the pole eye and back to the other sleeve.
There's nothing new in the world.
Tim, you will see from my drawing that the Musketeer system has the line from the end of the pole permanently secured to the spi clew, not terminating in a ring which slides on the guy and is thus free to go anywhere. Thus when the pole is launched the pole end will always end up at the spinnaker clew.
OK, probably the most important question - how do you step the mast / drop the jib without the puller?
Presumably you tie the spinacker halyard to the bow area.
The puller hole on the mast is still there. Would be easy to have an extra line for that purpose, which can be left with the cover when racing...
See here for more details... http://www.yachtsandyachting.com/news/161996/50th-Anniversary-Hamble-Warming-Pan
I forgot I had been sent these photos of the Winder at the boat show. Doubtless there are some little differences to the pole system used on Shabazzle....but which are crucial? And who is right?!!!