For my SOTA activations and HF portable backpacking operating I am using a 3 band link inverted V dipole and winding the dipole up onto a small round spool. Now the colder and darker months are here I was interested in the wire winders a lot of people use. My friend 3D printed me one to try out, but I did not like the kinks it puts into the wire so I decided to keep to my spool method as it keeps the wire lovely and straight. But we thought we would evolve the winder into one suitable for the 4 string guys I use to keep the mast up.Up to date I have been looping them up and tying the loops with a loose overhand knot. This works quite well and adds no weight at all. However it can be fiddly with gloves and although unfurls nicely 90% of the time but sometimes does get a knot or small tangle, which I can do without now winter is upon us.
The initial design used was based on one download from a 3D print site, but I wanted to make some improvements by extending the length and deepening the scoop in the middle and adding some function for an elastic loop to keep the string tidy when wound up.
This is the model Paul came up with during our discussions. Deep winding Vees and deep scoop, but with minimal weight. It will be printed in PLA not worring about it’s longevity as will not be outside for long at a time and a nice bright conspicuous red:
And here is it dimensioned up:
To use these winders you need to wind them in a figure of 8 fashion both to unwind nicely and also to not introduce twists like this:
This is how they should be wound:
And when wound like that this is how easily they are unwound:
- To retain the string nicely some elastic cord from eBay was added. A loop tied in the middle to make fitting and removal of it easy. Finished bare winder weighing in at 10 grams which tied up with the 3D model prediction:
To save having to tidy them up and possibly misplace these in the field I have attached the guy through one of the loops in the frame in the same loop that will go around the guy peg. This will actually also help me to slide the tensioner up the line easily with gloves on as I like to pack them away with the tensioner at the bottom of the guy:
All four guys tidy and ready to be deployed quickly. The longer part of my guys are the white cord, the last 3metres are in hi vis yellow to hopefully reduce chance of them being tripped over:
These are nothing new of course but it was nice to make them exactly to my requirements. Similar winders can be bought from places like SOTAbeams etc, though this unit is similar in size to the midi winder SOTAbeams sell but a third of the weight and the deep arch allows the string to lie nicely and has loads more capacity than my guys need and they guy an 8 metre fishing pole.