This is my version of a remake of the C-Tug, but at a fraction of the cost, with the challenge of making it work. The idea of the C-Tug is that it is a light weight, and portable kayak dolly that will strap to the under side when you need to move the kayak over land. I felt that the $120+ price tag was ridiculous, and set out to 3d print something of similar function, with the filament I had on hand. I do not think this is good for everybody, as some people can not tie their own shoes, but if you kayak, and want to amp up your adventure, without breaking your back, or the bank, this may help. I added the caps, to help hold the top pads on, and secure them better so I could bungee the cart to the kayak. I then used a couple of wood screws to hold them on.
the Arms are rather large, as I maxed out the size I could print on my printer, in order to maximize the size of the cart. If you have a small printer, this is probably not going to work without modifying it and making it different. I was able to print this in PLA with a .4mm nozzle, at 90mm/s and the tires are in TPU done at 25mm/s total print time took about 60 hours.
Update, I added a rough trial of an airless tire, I have not printed it yet, but I think it will be functional. I have also included some pictures showing the assembly, and parts that put it together.
I added an 80mm wide tire version, capable of using 608zz bearing to roll smoother, in both solid and airless. I am looking to modify it to use with the new kayak, lining up with the scupper plug holes.
sand the pins a bit, it makes them smoother
I also used a bit of hobby graphite to help the wheels roll on the pins.
Tinkercad and imagination
I used the idea of the C-Tug, to adapt my own ideas of simple and functional in to the design I came up with. It is not perfect, but neither am I.