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Soft shackle calculator
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Jens True 2022-06-16 14:05:18 +00:00
parent 393985cf8a
commit d0deb188dc
3 changed files with 85 additions and 3 deletions
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9
content/post/endless-loop/index.md
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@ -25,4 +25,11 @@ All measurements are in Centimeters.
{{< splice/calc_loop >}}
# Instruction video
{{< youtube uzK0gApBrCg >}}
{{< youtube uzK0gApBrCg >}}
# Soft Shackle Calculator
All measurements are in Centimeters.
{{< splice/calc_softshackle >}}

4
layouts/shortcodes/splice/calc_loop.html
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@ -1,5 +1,5 @@
<script>
function Calculate(obj)
function Calculate_Loop(obj)
{
//All calculations in CM
loop_dia = obj.loop_dia.value;
@ -40,7 +40,7 @@ function Calculate(obj)
<label for="loop_dia">Loop diameter (in centimeter)</label>
<input type="number" min="0" step=".1" class="form-control form-control-lg" id="loop_dia" placeholder="Enter loop diameter" onChange="Calculate(this.form)">
<button type="button" class="btn btn-primary" onClick="Calculate(this.form)">Calculate</button>
<button type="button" class="btn btn-primary" onClick="Calculate_Loop(this.form)">Calculate</button>
</div>
<hr>
<div class="form-group">

75
layouts/shortcodes/splice/calc_softshackle.html Normal file
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@ -0,0 +1,75 @@
<script>
function Calculate_Softshackle(obj)
{
//All calculations in centimeters
tail = 53.33 * obj.line_diameter.value;
length1 = obj.shackle_length.value;
size = obj.line_diameter.value;
body = length1 - 5.56 * size;
//Strech factor
stretch = 1.2;
if (size == .2) stretch = 1.1875;
if (size == .3) stretch = 1.23;
if (size == .4) stretch = 1.23;
if (size == .5) stretch = 1.21538;
if (size == .6) stretch = 1.2;
//Calculate
var inner_diameter = body / Math.PI - 1.5 * size;
var inner_diameter_streched = inner_diameter * Math.PI / 2;
var load_diameter = (body - 6 * size) / Math.PI - 1.5 * size;
var length = 2 * tail+ (1 + stretch) * body + 5.33* size;
var mark1 = tail;
var mark2 = stretch * body;
//Assign, round and format
obj.inner_diameter.value = inner_diameter .toFixed(1) +"cm";
obj.inner_diameter_streched.value = inner_diameter_streched.toFixed(1) +"cm";
obj.load_diameter.value = load_diameter .toFixed(1) +"cm";
obj.length.value = length .toFixed(1) +"cm";
obj.mark1.value = mark1 .toFixed(1) +"cm";
obj.mark2.value = mark2 .toFixed(1) +"cm";
}
</script>
<form onsubmit="return false;">
<div class="form-group">
<label for="shackle_length">Shackle length (Tip of eye to inside of knot)</label>
<input type="number" min="0" step=".1" class="form-control form-control-lg" id="shackle_length" placeholder="Enter shackle length" onChange="Calculate(this.form)">
<label for="line_diameter">Line diameter</label>
<select class="form-control form-control-lg" name="line_diameter" onChange="Calculate(this.form)">
<option value=".2">2mm</option>
<option value=".3">3mm</option>
<option value=".4" selected>4mm</option>
<option value=".5">5mm</option>
<option value=".6">6mm</option>
<option value=".8">8mm</option>
<option value="1.0">10mm</option>
<option value="1.2">12mm</option>
</select>
<button type="button" class="btn btn-primary" onClick="Calculate_Softshackle(this.form)">Calculate</button>
</div>
<hr>
<div class="form-group">
<label for="inner_diameter">Inside diameter closed</label>
<input type="text" readonly class="form-control-plaintext" id="inner_diameter">
<label for="inner_diameter_streched">Inside diameter closed and streched</label>
<input type="text" readonly class="form-control-plaintext" id="inner_diameter_streched">
<label for="load_diameter">Max diameter of load</label>
<input type="text" readonly class="form-control-plaintext" id="load_diameter">
<label for="length">Total line needed</label>
<input type="text" readonly class="form-control-plaintext" id="length">
<label for="mark1">Mark1 - From end</label>
<input type="text" readonly class="form-control-plaintext" id="mark1">
<label for="mark2">Mark2 - From first mark</label>
<input type="text" readonly class="form-control-plaintext" id="mark2">
</div>
</form>