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RS200 - Spinnaker doesnt reach mast when hoisted??

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Post Options Post Options   Quote jaydub Quote  Post ReplyReply Direct Link To This Post Topic: RS200 - Spinnaker doesnt reach mast when hoisted??
    Posted: 03 Jun 13 at 1:24pm
Originally posted by GybeFunny

I would say you want the bearing point of the sheave pulley at the same height as the tweaker line gromet rather than the top of the sheave as mentioned above.
Or for a simpler solution just reinstate the tweaker line, just tie off the other end on the D ring on the front of the mast so that the tweaker line is always tight.
That's what i though I said. Confused
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Post Options Post Options   Quote CoastWaterSports Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 11:20am
Thanks for the suggestions.. I found this in the rules which clarifies it..

On masts supplied with a plastic grommet where the tweaker line exits, the grommet 
may be replaced with a sheave box. The hole cut in the mast to install the sheave box 
shall incorporate the original hole for the plastic grommet, and the exit point from the 
sheave box shall be within 10mm of the exit point of the plastic grommet. The presence 
of the tweaker line in the mast is optional
-- Dinghy Chandlery - Axminster --

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Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 10:38am
Originally posted by CoastWaterSports

I've got to take the mast down again anyway so I'll just move the sheave down

I should check the class rules very carefully to make sure you get it in the right position if I were you.

Second the suggestion to check the class forum.
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Post Options Post Options   Quote transient Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 10:12am
On mine the bottom fixing hole on the lower sheave doubles up as a forestay attachment point.

There is a members only Yahoo RS200 discussion group at:

http://groups.yahoo.com/group/RS200/messages

Easy to register


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Post Options Post Options   Quote CoastWaterSports Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 9:59am
Thats cool, thanks for all your help,

I've got to take the mast down again anyway so I'll just move the sheave down so that the top of it is the same level as the gromit that i pulled out 

That'll learn me Big smile

Thanks again

Dave
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http://www.coastwatersports.com/
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Post Options Post Options   Quote transient Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 8:39am
Originally posted by GybeFunny

I would say you want the bearing point of the sheave pulley at the same height as the tweaker line gromet rather than the top of the sheave as mentioned above.
Or for a simpler solution just reinstate the tweaker line, just tie off the other end on the D ring on the front of the mast so that the tweaker line is always tight.



Sounds about right. Bung the tweaker back on for an easy solution.


My boat is parked a few miles away so I can't take dimensions right now.
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Post Options Post Options   Quote GybeFunny Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 13 at 7:27am
I would say you want the bearing point of the sheave pulley at the same height as the tweaker line gromet rather than the top of the sheave as mentioned above.
Or for a simpler solution just reinstate the tweaker line, just tie off the other end on the D ring on the front of the mast so that the tweaker line is always tight.
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Post Options Post Options   Quote jaydub Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 13 at 11:39pm
The rope you cut out was not redundant.  It is the tweaker line that keeps the spini halyard tight against the mast at the correct take off point on older masts

You need to reinstate the tweaker line or put a sheave in with the top of the sheave pulley at the same height as the grommet.

Suggest you ask first next time before making any further alterations. ;)
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Post Options Post Options   Quote CoastWaterSports Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 13 at 10:19pm
Hi,

On mine the spin halyard exits the top sheave and there was a plastic gromit with some rope coming out of it with a block on it that the spin halyard ran through. like a take up slack system that you get on other asymmetric boats, I cut that out this morning as it was redundant, but obviously instead there needs to be a sheave for the halyard to come through there instead.

Do you know if there is a specific height for the spinnaker head sheave so that I dont go putting one in thats illegal?

Cheers

Dave
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http://www.coastwatersports.com/
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Post Options Post Options   Quote transient Quote  Post ReplyReply Direct Link To This Post Posted: 02 Jun 13 at 8:53pm
On mine there are 2 sheaves. The top sheave was part of the square running system (now redundant on ours). The spinny halyard exits the lower sheave, this sheave is directly above (inch or so) the fore stay attachment point.

Has your mast not got this lower sheave?


Here's the RS diagram:

http://www.rssailing.org/docs/RS200/tuning/TweakerLineRiggingOptions.jpg

Edited by transient - 02 Jun 13 at 9:01pm
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