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 Post subject: H17 Rig (how tight?)
PostPosted: Mon Apr 28, 2008 10:31 pm 
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Joined: Mon Jul 25, 2005 8:20 pm
Posts: 149
Location: Campbell, CA
My rigging is presently loose (i.e. about one increment on the forestay). I would like to tension my rig to reduce the mast "flopping" around while tacking in chop. What are rig tightening limitations / drawbacks in respect to mast rotation, performance, and general stress on the overall system?

Thanks,


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 Post subject:
PostPosted: Tue Apr 29, 2008 4:07 am 
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Joined: Mon Jul 14, 2003 7:11 pm
Posts: 4580
Location: Detroit, MI
A tight rig will prevent the mast from rotating freely. That makes it harder to tack.

The mast will also try to "center" when off the wind in lighter air.


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 Post subject: Hobie 17 rig
PostPosted: Tue Apr 29, 2008 8:38 am 
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Site Rank - Deck Hand

Joined: Wed Sep 06, 2006 9:19 am
Posts: 9
Location: Vermilion, Oh
Matt,

I have a tension meter. What is the tension on the side stays for optimum upwind and down wind performance?


Hobie17guy

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Nick Vitale
hobie17SE,Hobie17jib


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 Post subject:
PostPosted: Tue Apr 29, 2008 10:03 am 
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Joined: Mon Jul 14, 2003 7:11 pm
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Location: Detroit, MI
You can't use a tension meter on the 17 because the rig is so loose - it literally has no tension when at rest.

It's hard to quantify how loose it should be - you can see the loose leeward shrouds in these photos:
Image
Image
There some rationale that having a loose rig allows the mast to rake back going upwind, and flop forward going downwind. Kind of like how the 14 works, just not as extreme.


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 Post subject:
PostPosted: Tue Apr 29, 2008 6:15 pm 
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Joined: Mon Jul 25, 2005 8:20 pm
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Location: Campbell, CA
Thanks for the info. That answers my question -- leave it loose. I will just have to live wth the unattractive "flopping".

Peace,

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Dan Peake
2003 H17SE
2005 FX1


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 Post subject:
PostPosted: Tue Apr 29, 2008 6:22 pm 
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Joined: Mon Jul 14, 2003 7:11 pm
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Location: Detroit, MI
At least it's not as bad as the 14, where the rig is so loose, we use the main halyard to tie the mast down so it won't come out of the step when you capsize:
Image


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 Post subject:
PostPosted: Thu May 01, 2008 8:56 pm 
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Joined: Mon Jul 25, 2005 8:20 pm
Posts: 149
Location: Campbell, CA
Thanks for the input. I adjusted the rig slack according to mast rotation. When the mast is rotated 90 degrees (i.e. the chord line of the extrusion is parallel to the cross bar) it still has a little slack, but at a point that I estimate to be about 100 degrees, the rig begins to tighten.

Rationale: I usually set my rotation arm to point at the shroud when going up wind, but have heard of circumstances, down wind, where people rotated 90, which was the basis of my slack-setting decision. Comments are appreciated.

Peace,

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Dan Peake
2003 H17SE
2005 FX1


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 Post subject:
PostPosted: Mon May 05, 2008 4:57 am 
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Site Rank - Deck Hand

Joined: Sun Mar 16, 2008 7:12 am
Posts: 14
Location: Charleston SC
I keep my rig tight. I learned this when the whole deck ripped out going thru some bad chop one time, demast and everything. When the rig flop side to side it can jerk to hard and up comes the deck. The other reason is these H17 hulls are getting old and can only take so much. I don't race either, so I guess you guys have loose rigs for more control, shape, etc. Which I can see that point also.


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