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Post by optimystic on Mar 10, 2015 4:38:01 GMT
Our 379 with the 134% jib uses the factory standard harken foot lock to both route and lock off the jib sheet to allow transfer of main and jib sheets on the same winch. The teeth on the harken look smoothed and it doesn't hold the sheet enough to trust under load. I'm considering other clutch type options. Is it possible to just file the teeth? All 4 foot blocks are worn so it doesn't appear to be a design worth buying again. Any other 379 owners seeing this premature wear?
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Post by JEF on Mar 10, 2015 14:04:52 GMT
Hi Optimystic
Understand your problem .. we have the same 379 specification and we have not had this issue to date 2012 yacht
Stating this we do not overuse this foot block to take the full 132% jib sheet loads stand alone, as you are now finding I would also question if this standard fitment foot block is up to that particular job in the longer term as described.
Set up on track we sail with a live jib sheet on one winch and the main sheet ready on the opposite winch with the Spinlock XAS clutch open. The German mainsheet system thus enables us to make any mainsheet adjustments without disturbing the jib, with the clutch open it also acts as a safety valve instantly ready to dump some main sheet in a controlled way should the need arise. We always sail with +1 crew so understand this may or maynot not suite your situation.
If you wish to sail as described IMO would spec up and fit another sheet clutch / jammer type that would more than cope with the regular applied jib loads of a full jib.
Thanks for the heads up I will now inspect the condition of our foot blocks prior to new season, hope my comments help & all the best.
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Post by MartyB on Mar 11, 2015 3:48:33 GMT
Opti,
Saw a post a while back that you are here in the salish sea. Are you the one out at the CSR yard in Des Moines I saw earlier today?
Marty
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Post by optimystic on Mar 11, 2015 5:10:28 GMT
That's our boat. I'll be there tomorrow morning. It would be fun to meet. I'm getting paint, folding prop and some electrical work done.
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Post by MartyB on Mar 11, 2015 13:05:22 GMT
I'll be heading south again with work, but I'll be in the valley heading to tacoma. As I have not been on that boat, it might work in the future for me, so would luv to get on board.
I have a long day driving today, tomorrow thursday is shorter. That might work if you are around in the morning. Usually by there about 9:30-10. Sometimes a bit earlier when I go there.
Marty
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Post by MartyB on Mar 12, 2015 3:33:15 GMT
Left a card with my person ph and email. Hopefully the folks there got it to you if you were there today. I was able to be there about 10 for a minute or two.
marty
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Post by Tigidal on Mar 12, 2015 20:34:12 GMT
Hi Optimystic Understand your problem .. we have the same 379 specification and we have not had this issue to date 2012 yacht Stating this we do not overuse this foot block to take the full 132% jib sheet loads stand alone, as you are now finding I would also question if this standard fitment foot block is up to that particular job in the longer term as described. Set up on track we sail with a live jib sheet on one winch and the main sheet ready on the opposite winch with the Spinlock XAS clutch open. The German mainsheet system thus enables us to make any mainsheet adjustments without disturbing the jib, with the clutch open it also acts as a safety valve instantly ready to dump some main sheet in a controlled way should the need arise. We always sail with +1 crew so understand this may or maynot not suite your situation. If you wish to sail as described IMO would spec up and fit another sheet clutch / jammer type that would more than cope with the regular applied jib loads of a full jib. Thanks for the heads up I will now inspect the condition of our foot blocks prior to new season, hope my comments help & all the best. Here's a photo of the arrangement...  Attachment Deleted.. I've not had an issue with slippage like the OP, but have had a concern about the foot block's ease of locking and overall utility. We also sail with the working jib sheet on the winch and the main on the opposite winch, but do like to have the mechanisms locked down for security. Wondering if anyone has indeed swapped them out? |
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Post by optimystic on Mar 13, 2015 17:35:05 GMT
Thank you all for the comments. Marty I did not get your business card. OptiMystic will be on the hard all next week getting some upgrades maybe later next week when she is put back together we can meet up. I'm hoping someone from Jeanneau is reading the forum and has some input. My rigger is looking into it but didn't have an immediate solution. The angle from the jib car to the winch forces the use of the block and eliminates the opportunity for a standard clutch. I might just give it a good scrub and keep using both sides for trimming. I hope there is a better solution as its really nice to have a driver on one side and a trimmer on the other. Kinda what the boat is designed for......
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Post by MalcolmP on Mar 13, 2015 18:09:18 GMT
The clutches will take quite a wide angle without too much issue - I know spinlock only recommend 10 deg, but very often on coachroof clutch banks the angles are fare more severe. When I retrofitted German sheeting on our 39i I replaced the double footblocks (not with jammers) with standard spinlock clutches - the angles are quite severe, but in 3 seasons quite hard use have no problems - images etc are explanatory at: www.jeanneau-owners.com/hintsandtips/retrofitgermanmainsheet.htmlmight help your thoughts, if not probably you will need to think of a stainless plate option where you can bolt a feeder, but would be hard to make look attractive and not agricultural www.pyacht.com/spinlock-winch-feeders.htm |
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Post by Tigidal on Mar 13, 2015 21:44:45 GMT
At the risk of talking to myself, here's the run-up from the winch and blocks to the jib sheet track/car...  Attachment Deleted I believe there has to be a better solution that fits the space without going outside of the recommended angle specs of a standard clutch. |
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Post by hoppy on Mar 13, 2015 22:04:14 GMT
I was a bot confused seeing the photo of the main clutch laying on it's side. I would have thought vertical would have been better and give you the option to perhaps replace it with a double and then look at routing the genoa sheet through it. But then I found this photo  Could you mount a clutch for the genoa forward of the foot block? Every now and then I look and scratch my head about how could I add a german mainsheet to my SO40. I'm not so convinced by Malcolm's solution but at the same time I can't figure out a better solution that does not require too many modifications to the deck or more holes in the cabin head liner |
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Post by Tigidal on Mar 13, 2015 23:22:27 GMT
I was a bot confused seeing the photo of the main clutch laying on it's side. I would have thought vertical would have been better and give you the option to perhaps replace it with a double and then look at routing the genoa sheet through it. But then I found this photo Could you mount a clutch for the genoa forward of the foot block? Every now and then I look and scratch my head about how could I add a german mainsheet to my SO40. I'm not so convinced by Malcolm's solution but at the same time I can't figure out a better solution that does not require too many modifications to the deck or more holes in the cabin head liner Where exactly would you propose mounting the clutch? That pic is a bit misleading as the rear block is for the asymmetrical and quite a bit behind the winch. |
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Post by hoppy on Mar 14, 2015 7:44:47 GMT
I was thinking that you could run the sheet through the clutch and then through the footblock. You would probably have elevate the block and maybe even set it on an angle so that the sheet enters and exits the clutch within specs.
As for the asy.. I now use the cabin top winches for that (I now have 4)
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Post by optimystic on Mar 15, 2015 19:32:36 GMT
Malcolm is the angle for measurement the angle of the sheet entering the foot block and being +_ 10 degrees on exit to the winch?
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Post by MalcolmP on Mar 15, 2015 22:32:37 GMT
Malcolm is the angle for measurement the angle of the sheet entering the foot block and being +_ 10 degrees on exit to the winch? The specs are not too clear www.spinlock.co.uk/uploads/files/112013/527d5bc80d1c48c16900192b/original/2152-XAS_Instructions.pdfThey only seem to talk of the angle from the clutch to the winch and not the entry angle. On my installation I bisected the angle - which of course is actually different from port to starboard as the winches are both wound clockwise, so the sheet entry angle varies. As I said this has coped with main-sheet loads for 3 seasons and no sigh of any problem, I think should therefore work fine for a genoa esp if you go for a big clutch like the XTS. Hoppy - the system works well and I think overall looks fine. Retrofits and never going to be ideal - but then looks like the OEM systems are not without faults ;-) |
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