Constant Tension Tripod Cartridge

Main Info

The Problem:
Tripods and expensive camera gear don't particularly enjoy strong winds. The usual solution is adding weight: sandbags, backpacks or whatever heavy object happens to be nearby. That works, but it also means carrying extra weight. Not exactly ideal when you're already hauling camera gear around.

There's another problem with conventional tie down solutions: When the anchor point shifts or a tent peg slowly works its way loose, the line loses tension. And once the tension is gone, so is all of the stabilization.

The Solution:
The Constant Tension Tripod Cartridge is a lightweight anchoring system designed to keep tension on your tripod even when the anchor points move slightly.

A woven 4 mm elastic cord inside the cartridge creates a progressive elastic element. Connected to a 4 mm paracord and tensioned using a standard rope tensioner (OR rope tensioners from Printables) creates a relatively constant pulling force. If the anchor point gives way slightly, the elastic element compensates for the movement instead of immediately allowing the entire line to go slack.

Note: I will upload a version that is small enough to fit into the center column of a K&F CONCEPT tripod. making it the ultimate travel tripod. Once uploaded feel free to check it out.

Key Benefits:

1. Constant Tension: The elastic cord compensates for small movements.

2. Lightweight: Adds only a few grams to your kit.

3. Compact: Small enough to keep in any camera bag.

4. Simple: No metal springs or complicated mechanisms

5. Reusable: Quickly installed and removed whenever additional tripod stability is needed.

Assembly Instructions

Hardware required

• 4 mm elastic cord (~ 1m)

• 4 mm paracord (~2 m + 20 cm)

• tent pegs

• rope tensioner

• glue + knife + lighter/blowtorch

• optional: metal hook

Assembly

1. Weave the elastic cord through the designated channels, creating the eight-strand assembly. Twist the cord so it gets easier into the internal channels. Work your way clock- or anticlockwise, direction doesn't matter, only the start and end points are important. Check that no lines are twisted! The final result should stretch longer than the tube, so the cord cant experience extreme stress. (Depended on the cord type the unstretched length varies)

1. Assembly of the cover cap. Feed the short piece of paracord through the slotted hole in the top. Match the orientation of the cutout with the loose elastic cord. Check the elastic cord assembly and tie the knot. Add some glue (type does not matter) to the knot and surroundings and press together. Try to keep the paracord gluefree.

1. While the glue cures, the main line can be attached. Secure with a knot. There are multiple hole sizes for different attachment options, chose what fits your system. OPTIONAL: Use a hook instead. Does offer more flexibility in terms of rope choices, BUT needs a small string for changing ropes! Also needs to smaller than the bore of the tube.
   

   

1. When the glue has dried, tie a knot to secure the upper paracordloop. Add some Glue to the upper part und push the whole assembly into the tube. 

1. Once all glue has dried, the final product should look like this:

Usage Instructions

Hammer the tent pegs into your desired spot. Depending of the soil use more or less. Feed the lose end of paracord through the rope tensioner and pull slowly until the desired tension is reached or the sliding part is at its maximum position.

Important: This system is intended as an additional stabilization method. Always make sure that anchor points are appropriate for the expected load and weather conditions.

Material Recommendations

Print in PETG, ABS, ASA or another tough material suitable for outdoor use.

PLA can work for testing and occasional use, but I would recommend PETG or ASA for a piece of equipment that may spend extended periods outdoors under tension.

Recommended Print Settings

0.2 mm layer height, 3–4 perimeters and 30% infill are recommended.

Since the printed parts are permanently subjected to tension, good layer adhesion is more important than achieving a pretty surface finish. No supports should be necessary if printed in the intended orientation.

Stay Tensioned.