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Old 02-01-2011, 15:57   #1
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Length Lost to Splicing - Is there a Formula ?

I am starting to replace wire rigging with Amsteel where it makes sense. Today I made up new stays that connect the ama (float) bows to the tip of the bowsprit, which keep the sprit from moving laterally. (see image)

Anyway, my question is about whether anyone knows if there is a formula that can predict the amount of length lost to construction "shrinkage"? The loss is related to the diameter of the line increasing for the length of the "bury".

I found When making modified Brummel eye splices that if I measured the line with the Brummel lock complete (before burying the tapered tail) it was exactly the right length, but when the bury was complete I had lost a few inches. My first try was a learning experience (I'll find another use for the line, at some point). My second try I compensated but was still off a little (but it's usable for the intended purpose). Any tips to get it exact?

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Old 02-01-2011, 22:38   #2
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G'Day SF,
Can't help with the formula, but have you loaded the new stays up yet? I found using the simple "Sampson" splice in Ocean-12 dyneema 75 that the length increased a bit when first loaded up.

If you do find a fprmula, there are others out here who would like to hear about it!


Jim and Ann
s/v Insatiable back in MBTBC marina, waiting for next eye jobs to be done
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