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Stanchion blocks for spinnaker sheets

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Fleet
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151 Posts

Initially Posted - 03/29/2010 : 04:52:43

Has anyone mounted blocks for the spinnaker sheets on the aft stanchions? Will the stanchion handle the load from the spinnaker?

Fleet
Kamikaze
1983 Hull #397
Lake Guntersville, AL

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joearcht
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Response Posted - 03/29/2010 : 12:37:16

My boat has a track that runs from mid cabin to the stern and my spinnaker blocks are attached to this track. I think the track is anchored to the hull with one 1/4" diameter bolt approximately every 12"
I presume you are considering attaching the block to the base of the stanchion and not anywhere higher up on the stanchion.

You might try this site to gauge the load you will be applying to the stanchion.

http://www.sailingusa.info/cal_wind_load.htm

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Fleet
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Response Posted - 03/29/2010 : 14:09:37

I'm currently using a car on the outside track, but the car is not flexible enough for the spinnaker sheet. The sheet binds. My brilliant idea was to mount one of the spring loaded blocks on the aft stanchion but I neglected to investigate how much force the stanchion can handle (with the block mounted low).

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islander
Master Marine Consultant

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4024 Posts

Response Posted - 03/29/2010 : 16:31:59

I think I remember JimB said in a post once that he tied two blocks to his stern cleats. Thats on a a C25 though. Maybe he will read this thread and jump in here with more on it.

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joearcht
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Response Posted - 03/30/2010 : 06:39:47

I have a snap-block shackled to the car located at the end of the track. The block has full rotational ability and flops on the deck when not in use. A spring loaded connection might be better as long as it still rotates. Other than being a little sloppy when not in use, I've never noticed any binding during spinnaker operations. I think you need to look at some other hardware options and stay on the track.

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SailCO26
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Response Posted - 03/30/2010 : 14:36:05

I've got a spring loaded block on the outside track to help keep the block upright, then a non-spring turning block on the base of the stanchion at the rear of the cabin.

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Andy_334
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Response Posted - 05/10/2010 : 19:41:40

As others have said, spin blocks can mount on cars on the outside track. Spring stand-ups can help prevent binding. however, some will attach the forward blocks to a stanchion base.

However, your trimmers will love you if you use Harken Ratchamatic blocks for the forward blocks, regardless if you mount them on the stanchion or the track. Don't ask me how I know this, but trust me!

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windsong
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Response Posted - 05/11/2010 : 05:07:21

I considered using the stanchions, but I had my concerns about their integrity under hours of shifting forces. They were certainly not built for that. I opted for snatch blocks on the stern cleats.

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SailCO26
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Response Posted - 05/11/2010 : 07:25:43

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Andy_334
 However, your trimmers will love you if you use Harken Ratchamatic blocks for the forward blocks, regardless if you mount them on the stanchion or the track. Don't ask me how I know this, but trust me!
<hr height="1" noshade id="quote"></blockquote id="quote">+1 on ratcheting forward blocks, make sure the function can be disabled also. I pref trimming w/o ratcheting in light air.
Jim

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Andy_334
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Response Posted - 05/12/2010 : 19:42:29

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by SailCO26
 <blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Andy_334
 However, your trimmers will love you if you use Harken Ratchamatic blocks for the forward blocks, regardless if you mount them on the stanchion or the track. Don't ask me how I know this, but trust me!
<hr height="1" noshade id="quote"></blockquote id="quote">+1 on ratcheting forward blocks, make sure the function can be disabled also. I pref trimming w/o ratcheting in light air.
Jim
<hr height="1" noshade id="quote"></blockquote id="quote">

Great thing with the Ratchamatic, they're load sensing. Light air; no load. No ratchet. Blowing dogs-off-chains. Solid grip. As I said, worth at least of knot of boat speed from your grateful trimmers.

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