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Old 06-12-2018, 08:58   #16
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Re: Low Friction Ring Sizing

^ Then try it! They are inexpensive and easy to rig. If it does not work out, move them elsewhere.


In the barber hauler example, the angle is either slight (beating) or the load is low (reaching). In the bobstay example, it is never adjusted under load.
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Old 06-12-2018, 09:21   #17
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Re: Low Friction Ring Sizing

Quote:
Originally Posted by Dockhead View Post
You could attach ball bearing blocks using dyneema strops.
We did that when we attached the pair of ESP 75's.
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Old 06-12-2018, 17:06   #18
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Re: Low Friction Ring Sizing

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Originally Posted by deluxe68 View Post
I could not imagine a scenario where lowering the sails would be hindered by a slight increase in friction. When lowering the sails, typically there is not much tension on the line after the process is started. I have tried searching on the internet for specifics regarding dyneema vs polyester use in low friction rings and found nothing other than opinions in this forum.
Climbing a mast while under way to free a sail slide suffering from a "slight increase in friction" in the middle of Kinsale harbor makes me sensitive to this issue. A friction ring may not slow the halyard much, but it will not be as quick as a ball-bearing block. It may also be more vulnerable to hockles in the line snagging on it. It might be worth experimenting, to see how well it actually works.
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Old 19-12-2018, 17:52   #19
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Re: Low Friction Ring Sizing

can anybody tell me why lfr are not made from stainless steel? probably cheaper than anodized aluminium & negligibly heavier...would expect lower friction from stainless steel
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