Author Topic: Detachable Running Backstay-Looking for Photos and Feedback  (Read 270 times)

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Ambition

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #9 on: December 15, 2020, 01:24:51 AM »
Shaun,
On board Ambition I recently got rid of the SS running backstays and replaced it with dynemma. One of the pluses that the 4:1 blocks with cam are not required to be permanently installed to try and tension the runners when in their storage location alongside the shrouds. Now I only pull out the 4:1 blocks when needed. A light line provides enough tightness so the dyneema running backstays in place. Removed the "wad" of line that kept snagging the genoa sheets at the wrong time.
I am 100% happy with the simplicity of the install compared to the original. Selden provided me with the dyneema sizing as well as the new terminal fittings for the upper mast connection.

Merrill and Maryse
S/V Ambition H46 #40

wurzner

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #8 on: December 14, 2020, 11:40:07 PM »
Hi Jeff and all.  First off...appreciate the responses since this user group not typically that responsive to questions relative to other groups...nice to have the dialogue.  In hindsight, it would helped to say what I have (1990 Hylas 51) and rig type (non-furling). 

Thank you all and add photos if possible.

Cheers
Shaun

jt11791

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #7 on: December 14, 2020, 09:38:41 PM »
There may be some variation in terminology.  Check stays are typically much lower on the rig than back stays.  In my set-up, I have a single adjustable back stay.  My running back stays attach above the 2nd spreader where the stay for cutter sail attaches.   When using a spinnaker in any kinds of winds or sea state, I use the runners to limit pumping.  I have done this on my previous boats as well as some of the race boats I sailed on.  As for the winches,  I like to have a full head sail before i douse the spinnaker to depower it.  That means my primary is for the head sail and my secondary for the spinnaker sheet/guy.   So they are not available for the running backs.  I have a friend on here with a 54.  Maybe he will pipe in on his set-up as he cruised it extensively.   The rig on my boat is pretty beefy and maybe runners are not needed, the the spinnaker is equally large.

Thanks
Shaun

Okay, now I understand better.  We were close on terminology, I only call 'em backstays if they go to the masthead and what I call checkstays attach, as yours do, where the cutter stay is.  Anyhow, I haven't needed them sailing downwind under kite or poled-out headsail.  These roller-furling masts are so much stiffer than anything I ever raced with, the only times I set up the checks are when using the staysail (cuttersail).  I've only really used the checks in anger once that I can recall, when I had to sail to weather in about 45kts true.  I used the staysail and a scrap of main and cranked on the checks to keep the staysail luff from sagging off and the boat pointing high.

I don't imagine it will take much tension to stop mast pumping downwind, so your 4:1 should be fine for that, and for upwind you can always throw the 4:1 tail on a winch if you feel you need more.  (Just don't rip the toerail off). 

Fair winds,
Jeff

 

S/V Renegade  H54-19

wurzner

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #6 on: December 14, 2020, 03:58:20 PM »
There may be some variation in terminology.  Check stays are typically much lower on the rig than back stays.  In my set-up, I have a single adjustable back stay.  My running back stays attach above the 2nd spreader where the stay for cutter sail attaches.   When using a spinnaker in any kinds of winds or sea state, I use the runners to limit pumping.  I have done this on my previous boats as well as some of the race boats I sailed on.  As for the winches,  I like to have a full head sail before i douse the spinnaker to depower it.  That means my primary is for the head sail and my secondary for the spinnaker sheet/guy.   So they are not available for the running backs.  I have a friend on here with a 54.  Maybe he will pipe in on his set-up as he cruised it extensively.   The rig on my boat is pretty beefy and maybe runners are not needed, the the spinnaker is equally large.

Thanks
Shaun

jt11791

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #5 on: December 14, 2020, 03:23:21 PM »

I could do that, but I want to keep them free for a head sail and spinnaker.   I typically use the head sail to shadow the spin at takedowns. 
Shaun

I guess I'm not clear on what you are trying to do with the stays, are these true running backstays?  The only things holding the rig up?  On my boat, the check stays (which go to the hounds) are used to tension the cutter stay when using the staysail and prevent mast pumping.  They aren't needed at all for downwind work, so the winches are free for spinnakers and headsails.  On my 54, when I do use a checkstay I use a lot of tension, probably more than I could get with a 4:1 purchase, so a winch makes it easy.
S/V Renegade  H54-19

joel

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #4 on: December 14, 2020, 02:58:21 PM »
We did exactly what you are looking at doing on our 44.

Added Wichard padeyes to the toerail.  Dyneema (8 mm?) stays with eye splices.  Softshackles to a 4:1 purchase.
We have not had to use them much, and keep them on the mast, but they do tend to slap on the mast in a breeze.

I can try to get  photos later in the week.

Joel


wurzner

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #3 on: December 14, 2020, 04:41:02 AM »
On my boat the check-stays are run to a block on (near) the toerail and then to the primary winch, which is isn't being used as it is on the weather side.  So no 4:1 needed.
JT

I could do that, but I want to keep them free for a head sail and spinnaker.   I typically use the head sail to shadow the spin at takedowns. 
Shaun

jt11791

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Re: Detachable Running Backstay-Looking for Photos and Feedback
« Reply #2 on: December 14, 2020, 04:15:33 AM »
On my boat the check-stays are run to a block on (near) the toerail and then to the primary winch, which is isn't being used as it is on the weather side.  So no 4:1 needed.

-JT
S/V Renegade  H54-19

wurzner

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Detachable Running Backstay-Looking for Photos and Feedback
« Reply #1 on: December 14, 2020, 04:02:57 AM »
I replaced all my standing rigging and want to complete it with dynema running back stays.  I want to be able to keep them at the mast since I won't need them that frequently, but hook them up as needed. I am thinking two 4:1  woth a cam setup with snap shackles to attach to the dynema and toe rail.  I can use the 4:1 to tighten then up, but quickly detach them when not needed.  Anyone have some ideas, photos, or better ideas?  Thanks in advance.  Shaun

 

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