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dumb ?: threading downhaul line mast extension
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isobars



Joined: 12 Dec 1999
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PostPosted: Mon Apr 02, 2012 8:28 am    Post subject: Reply with quote

Taking pieces from all these posts leads me to this set of suggestions which may work together:
1. Raise the sail a notch in your extension. That last inch or two of gap closure isn't important for earthlings on smallish sails.
2. Spectra should let you use only two wraps, permitting you to get past the chihuahua/Marstiff syndrome in the following manner:
3. Don't use the top (in this photograph) Chinook pulley as a pulley. Instead, where the free end of the line emerges from its anchor hole in the top (in this photo) of the Chinook, instead of running it to the sail block, run it over the top Chinook pulley on its foreground side in these pics,continue around that pulley, then between that pulley and the extension centerline (behind that pulley in this picture), so it emerges from that pulley heading towards the background side of your sail block. Then lace it all up but SKIP the center pulley of the sail block. This may let the sail block line up better with the cleat side of the Chinook block.

Whew! Yes, your longer lower tack strap is an issue, but the bigger problem, IMO, is the mismatched size of the two blocks.

Mike \m/
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U2U2U2



Joined: 06 Jul 2001
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PostPosted: Mon Apr 02, 2012 8:28 am    Post subject: Reply with quote

things just never seem to work out the way they do in your mind


B737

as I reacll you are going to OBX late May ..?

be there till May7th

just look for the police cars

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outcast



Joined: 04 May 2004
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PostPosted: Mon Apr 02, 2012 9:26 am    Post subject: Reply with quote

Spectra
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DanWeiss



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PostPosted: Mon Apr 02, 2012 9:38 am    Post subject: Reply with quote

Forumuline et al. Braided Spectra without a cover can work (I used it for years) but it is hard to melt as John pointed out and may not cleat easily in well-used V-Jam cleats.

Another trick is to spray McLube Sailkote on the DH line and the pulleys. Spraying the cleat seems not to matter one way or another since the line itself is covered with the stuff anyway.

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kevinkan



Joined: 07 Jun 2001
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PostPosted: Mon Apr 02, 2012 12:43 pm    Post subject: Re: dumb ?: threading downhaul line mast extension Reply with quote

B737, you are not dumb. You have your lines laced correctly in your picture for this sail. For this sail, the Chinook pulley alignment is the best. I think that the regular line that most extensions come with is so inferior to FSE Robline Super Downhaul Line/Marlow Formuline. These dyneema lines are so much more abrasion resistant and slippery, they make downhauling easier, last much longer, and give you peace of mind when sailing. I use it for everything: downhaul, outhaul, inhaul, safety strap for tendon universals. So, if you're worried about the line chafing on the pulley edge, switch to Dyneema line and/or move the collar on your extension one setting to increase the space between the pulleys and cut down the angle of the line from the last pulley to the cleat.

This is the line I use:

http://www.sunsetsailboards.com/shop?page=shop.product_details&flypage=flypage.tpl&product_id=537&category_id=24

Using a Streamlined extension with the sail pictured will give you more lacing problems than you're having now... stick w/ the Chinook for this sail.

For your Maui Sails, the Streamlined extension's pulley orientation is more intuitive and easier for most people to lace properly, but your Chinook extension will also work fine if you thread the lines like in the video posted earlier in this thread.

Hope this helps.

B737 wrote:
okay back to sailing one oh one for me...
this problem is starting to bug me, im assuming im threading the downhaul line incorrectly...

i start out with this...
which looks all well and good, lined up...





then once i down haul it all the way the line slips halfway off the last roller on the sail. sails fine but i can see where my lines are chaffing and risk snapping. anyone else have this problem?



in real life its worse than the photo, the downhaul line is riding on the edge of the pully right before it enters the cleat.

I tried another way where the line goes from the chinook attachment knot on the base, directly down into the adjacent mast extension pully then back up, instead of to the sail first, but when i do it that way i dont have enough wraps on the sail pulleys.

this thread is going to get very confusing Smile

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jrpla



Joined: 25 Jul 2008
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PostPosted: Mon Apr 02, 2012 2:57 pm    Post subject: Spectra Line Reply with quote

Get a Spectra line, will make your rigging much easier and more durable than standard DH lines.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=270899532371&ssPageName=STRK:MESE:IT
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swchandler



Joined: 08 Nov 1993
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PostPosted: Mon Apr 02, 2012 5:55 pm    Post subject: Reply with quote

B737,

For your Maui Sails sails, the following is the extension/sail rigging instruction from the their website. Just for the record, the threading method is the same as presented in the video that KMF posted.

http://www.mauisails.com/pdf.php?id=89
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B737



Joined: 27 Mar 2009
Posts: 184
Location: Jersey Shore

PostPosted: Mon Apr 02, 2012 10:53 pm    Post subject: Reply with quote

thank you all for the input!! always learning stuff around here, time to swap the downhaul lines Smile
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kevinkan



Joined: 07 Jun 2001
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PostPosted: Tue Apr 03, 2012 12:35 am    Post subject: Reply with quote

Here is a picture of a Streamlined extension rigged on Maui Sail with Formuline


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