When you make whoopies using dynaglide, do you use the same bury lengths as you would with amstel
Thanks
When you make whoopies using dynaglide, do you use the same bury lengths as you would with amstel
Thanks
No, you can make them shorter. The "official" guidelines on bury lengths from cord manufacturers specify them in terms of numbers of "fids", basically 1/22 of the cord's diameter.
Dyanglide's diameter is 2mm, 7/64" Amsteel is 2.8mm, so you can make
a bury in dynaglide about 70% of that needed for 7/64" Amsteel.
Grizz
(alias ProfessorHammock on youtube)
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Attached below are the specs for various cordage that I use. I've forgotten who first prepared this chart; but I find it very helpful.
David
The road goes ever on and on Down from the door where it began. Now far ahead the Road has gone, And I must follow, if I can, Pursuing it with weary feet, Until it joins some larger way, Where many paths and errands meet. And whither then? I cannot say.
-Frodo Baggins, The Fellowship of the Ring
The chart, unfortunately, repeats errors, and gives a false impression of scientism in this. There's no documentation for any of it.
The Dynaglide weight is known to be wrong. It weighs closer to 2.6 oz per 100 feet. The Dynaglide breaking strength continues to be disputed, as there is no evidence for the number shown.
Why does this matter? Because all these materials barely float, with a specific gravity of .97, and once used enclose almost no air. Therefore, the diameters should all be proportional to the square root of the true weights, (and equally the weights should be proportional to the square of the diameters) whatever those true weights are. The true weight of Dynaglide as listed in this chart is certainly wrong. The others?
Ten or more years after wider use in nautical and maritime industries of these fibers in ropes, the recommendations for bury lengths from a major sailing organization increased, due to field experience with the intrinsicly slippery material.
Nothing wrong with following conservative guidelines. And that's what they are: guidelines, estimating for sufficient bury lengths. There is no need for more than 1 digit after the decimal and not even that decimal fraction if "conservative" is properly estimated. Anything wrong with forgetting the details and just using 8 inches? No.
Last edited by DemostiX; 08-21-2011 at 10:15.
Thank you!
I haven't read much about dynaglide but am seeing more posts of people wanting to use it. What is the advantage over amsteel?
Half of the above has no bearing on proper bury length....
The other half has been addressed.
Weight per 100' is not a value used to determine fid length.
Specific gravity is not a value used to determine fid length.
Dutch and I both have given numbers regarding the failure point of dynaglide. And given our rudimentary tests were so different, but the numbers were essentially the same, then I think its fair to say the number is good.
The article you mentioned, here again regarding increased bury lengths in synthetic line, is not backed up with any proof, documentation or research. Interestingly enough, it has the same issues you seem to have regarding Dynaglide.
Grizz
(alias ProfessorHammock on youtube)
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