Gennaker mounting
Printed From: Yachts and Yachting Online
Category: Dinghy classes
Forum Name: Technique
Forum Discription: 'How to' section for dinghy questions and answers
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=9539
Printed Date: 08 Aug 25 at 1:10am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com
Topic: Gennaker mounting
Posted By: liener
Subject: Gennaker mounting
Date Posted: 24 Jun 12 at 5:29pm
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Hi everybody, I'm Linus from Switzerland and I sale a topper boss on the lake of lucerne. Now I've a little problem with my gennaker. I draw it up out of a bag with a lace comming from the top of the mast. The lace is held in a loop, from the top of the mast it goes to the footing of the mast then across the deck to the back of the boat. From the back it goes again across the deck through the gennaker bag to the gennaker. To get the gennaker out of the bag you just need to pull the lace at the deck comming from the footing of the mast. My problem is now the blocking of the lace on the one hand between the strokes and on the other hand when the gennaker is fully drawn. How do you do that? Is there a spezial mounting? I hope my English is understandable! Thanks for any answers... Cheers Linus |
Replies:
Posted By: dave.blakesley
Date Posted: 25 Jun 12 at 10:00am
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I think a diagram may be helpful here, not sure I completely understand the problem...
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Posted By: Lukepiewalker
Date Posted: 25 Jun 12 at 10:24am
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Sounds like he may be missing a cleat somewhere. If I read it right.
------------- Ex-Finn GBR533 "Pie Hard" Ex-National 12 3253 "Seawitch" Ex-National 12 2961 "Curved Air" Ex-Mirror 59096 "Voodoo Chile" |
Posted By: MattTrinder
Date Posted: 25 Jun 12 at 12:02pm
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Or he's expecting a sort of one-way system so you can pull and release the kite up-haul (pausing between pulls) without it coming back down ? |
Posted By: Telltale
Date Posted: 25 Jun 12 at 12:15pm
 Perhaps we are talking about "blocking of the lace" being cleating between hoists and "blocking when fully drawn" being when fully hoisted. In which case the above http://www.pinbax.com/index.asp?selection=detailed&uid=36180&cg=7&mc=74&cct=4&sc=623 - spinlock swivel cleat will do the job. As suggested by Matt. |
Posted By: MattTrinder
Date Posted: 25 Jun 12 at 3:05pm
As used on the Xenon, one of the Boss's (distant) children. Other Topper skiffs (Buzz, Iso) etc use a standard cam cleat, with or without a fairlead on top. I prefer the standard cam cleat version, less resistance on the way up, and less likely to cleat itself when you don't want it to. |
Posted By: craiggo
Date Posted: 25 Jun 12 at 7:54pm
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My interpretation is that the kite halyard hasn't been rigged properly and he has missed the cleat and the block.
Linus, when the halyard reaches the bottom of the mast, it should go through a block and forward to a double block (connected to the pole), then back through a camcleat then a block on the cockpit floor, and then ideally through a block tied to elastic from the back of the boat, then through a block behind the sock before running through the sock and onto the spinnaker. You should pull the halyard from behind the block after the cleat when you hoist the spinnaker, allowing you to hoist arm over arm. The block will ensure the halyard runs through the cleat and is therefore always cleated. To drop the kite uncleat it, then pull down from behind the block on the sock side of the boat. Are there any BOSS sailors with pics to show this? |
Posted By: Telltale
Date Posted: 25 Jun 12 at 9:54pm
| Following on from Craiggo's comment this may be of interest. It never ceases to amaze me the things you can find on the web, enclosed is a link to the http://www.isoracing.it/index.php?option=com_content&view=article&id=51:armare-liso-parte-1&catid=36:armare-la-barca&Itemid=102 - rigging of the gennaker on an ISO , (can't be that different to a boss) in ITALIAN. It will be just my luck that Linus is German Swiss but there you go! |
Posted By: liener
Date Posted: 26 Jun 12 at 6:52am
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Hi guys, many thanks for your detailed answers! For sure there is missing something! At the moment it looks like this:  So it would be great, if there would be a pic of what craiggo is talking. In the mean time i'll try to get the Italian decoded!:) For sure I've something like a "circuito drizza"! Many thanks again for your answers! Cheers Linus http://www.pinbax.com/index.asp?selection=detailed&uid=36180&cg=7&mc=74&cct=4&sc=623 - |
Posted By: liener
Date Posted: 26 Jun 12 at 11:00am
With some details: In red: Lace comming from the top of the mast, turned by the little pully. On the cockpit (not visible in this pic) there is a little cleat to keep the gennaker when fully drawn. In blue: The lace goes back through the gannaker sack onto the gennaker. It is comming from a pulley held by an elastic at the back of the boat. All in one cycle! |
Posted By: craiggo
Date Posted: 26 Jun 12 at 6:09pm
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Linus,
I cant find a reasonable enough picture to explain it but it looks like you have the halyard rigged incorrectly. Its also a while since I last sailed in a BOSS so my memory as to where all the fittings are is a bit hazy. There should be a back to back block (two blocks connected to each other) under the front end of the spinnaker chute, which the pole outhaul runs through. The spinnaker halyard should go forward through this before coming back along the cockpit floor. The halyard should run through a camcleat and then there should be a pulley immediately behind it and you should pull up from behind the pulley, which will ensure that as you hoist the spinnaker automatically is jammed. I will try and draw a sketch and post it after I've eaten my dinner! |
Posted By: craiggo
Date Posted: 26 Jun 12 at 6:20pm
Linus, managed to do this before my dinner was ready. I hope it helps. |
Posted By: themeaningoflife
Date Posted: 26 Jun 12 at 6:24pm
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http://www.google.co.uk/imgres?um=1&hl=en&safe=active&sa=N&tbm=isch&prmd=imvns&tbnid=hk-HuX8kPI5DXM:&imgrefurl=http://www.harken.com/onedesign/49er.php&docid=62NxXWQMbHKTQM&imgurl=http://www.harken.com/images/49er_spinnaker.gif&w=500&h=294&ei=IPDpT8KGIvPa0QW80biqAQ&zoom=1&iact=rc&dur=233&sig=112909604247397512777&page=1&tbnh=129&tbnw=220&start=0&ndsp=17&ved=1t:429,r:0,s:0,i:72&tx=138&ty=43&biw=1280&bih=685 - http://www.google.co.uk/imgres?um=1&hl=en&safe=active&sa=N&tbm=isch&prmd=imvns&tbnid=hk-HuX8kPI5DXM:&imgrefurl=http://www.harken.com/onedesign/49er.php&docid=62NxXWQMbHKTQM&imgurl=http://www.harken.com/images/49er_spinnaker.gif&w=500&h=294&ei=IPDpT8KGIvPa0QW80biqAQ&zoom=1&iact=rc&dur=233&sig=112909604247397512777&page=1&tbnh=129&tbnw=220&start=0&ndsp=17&ved=1t:429,r:0,s:0,i:72&tx=138&ty=43&biw=1280&bih=685 if you follow the orange line shown here on a 49er diagram, it should be how your boat is rigged ------------- Cambridge University Lightweight Rowing Club RS800 1128 kindly sponsored by http://www.rwo-marine.com" rel="nofollow - RWO Marine |
Posted By: craiggo
Date Posted: 26 Jun 12 at 6:26pm
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Thats what I've just drawn, and I was only on the Harken site the other day! doh!
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Posted By: liener
Date Posted: 26 Jun 12 at 10:35pm
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Craiggo you've my repect, somthing like that before dinner, great job!;) And to confirm the whole thing the post from themeaningof... thanks a lot! Now I just need to know what I have and what I need to by! I'll do that tomorrow;) Thanks again! Linus |
Posted By: liener
Date Posted: 29 Jun 12 at 1:25pm
Am I right with my assumption that you pull the lace behind the hoist block to get the gennaker drawn? In that movement the “Double block” will move to the right until the gennaker pole is fully up. To get the gennaker back in you pull the lace the other way around, right behind the drop block. The pole gets in with the pull of the gennaker? |
Posted By: JimC
Date Posted: 29 Jun 12 at 1:51pm
| Yes, that's right. You don't ever have any load running through the tension block, it's just there to try and reduce the amount that that the line gets tangled up. |
Posted By: liener
Date Posted: 04 Jul 12 at 8:44am
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Great, so theoretically everything is clear. Now i'd like to know something about the main parts! It would be great if you could tell me something about the options I have on: - the hoist block - the drop block - the camcleat - the double block Tell me you're experience you've made, and may be where I could get the parts. There's also one very basic question I have, who is in charche to get the gennaker drawn? I mean the handling will do the one in front, for sure. Thanks for your answers & have a nice day Linus |
Posted By: NickA
Date Posted: 04 Jul 12 at 9:47pm
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The CREW should pull the gennaker up and the CREW should pull the gennaker down. The HELM keeps steering - but can help a little by holding the gennaker sheet whilst the crew pulls it up, then the gennaker fills up with wind nice and fast .... and you're off. As for blocks, any small blocks will do fine. for the Camcleat, you can use a spinlock (as the photo earlier in this thread), then you don't need a hoist block. Use a swivel block for the drop block then you can drop from anywhere in the boat. I use Allen 20mm blocks ( http://www.allenbrothers.co.uk/item.asp?prod_id=1&cat_id=1 - http://www.allenbrothers.co.uk/item.asp?prod_id=1&cat_id=1 ) with a A2020 as the drop block and A2028 for the double block). My boat is smaller than yours tho and the kite only 13sqm compared to your 33sqm!!!! You might need bigger blocks. Enjoy ------------- Javelin 558 Contender 2574 |