# J.Jig

URL: https://jmarple.ai/products/j-jig/
Category: Drone Test Jig

Flight testing without flying

A drone mounted on J.Jig can be run under conditions close to real flight, so problems in key components can be found before flying. The jig is fully mechanical. It weighs 3 kg, and its legs fold for storage.

[J.Jig](https://www.youtube.com/watch?v=9myxBOqi_jY)

## Why J.Jig?

### Three-axis rotation

A ball joint allows roll and pitch of ±25° and unlimited yaw, so the drone can be tested in different attitudes.

![Three-axis rotation](https://jmarple.ai/content/products/j-jig/rotation.png)

### Portability

J.Jig weighs 3 kg and the support legs fold, so it can be carried to any test site. The simple design is quick to repair.

![Portable design](https://jmarple.ai/content/products/j-jig/portable.png)

### Drone compatibility

Any drone that fits the 8 × 8 cm mounting plate can be mounted. The limit is thrust, not size (see Q&A).

![Drones of different sizes](https://jmarple.ai/content/products/j-jig/drone-sizes.jpg)

## Specifications

| | |
| --- | --- |
| Roll/pitch | ±25° |
| Yaw | Unlimited |
| Weight | 3 kg |
| Size (folded) | 12.5 × 12.5 × 47 cm |
| Size (unfolded) | 85 × 85 × 52 cm |
| Mounting plate | 8 × 8 cm |
| Patents | Korean Patent No. 10-2287069<br />Korean Patent Application No. 10-2024-0116253 |

![J.Jig specifications](https://jmarple.ai/content/products/j-jig/specification.png)

## Q&A

**Which drones can I mount?**

It depends on thrust rather than size. The J.Jig parts add about 180 g to the drone, so the drone must be able to take off with that extra weight.

The whole jig weighs about 3 kg. If the drone's test thrust gets close to or above 3 kgf (29 N), the jig can lift or slide sideways, which is dangerous. In our tests, a drone with 20-inch propellers and 85 cm between motors made the jig slide, and we had to add weight to it.

**How do I mount my drone?**

Fix it to the 8 × 8 cm mounting plate using the grid of holes. How to fix it depends on the drone's frame.

**Does J.Jig need maintenance?**

If J.Jig has been stored for a long time, grease the ball joint with a metal lubricant so it moves freely.

## Precautions

The jig itself is simple, but the drone on it has fast-spinning propellers.

**Before testing**

- Tighten the screws between the support and the jig body. Replace any loose screws before use.
- Attach the drone firmly to the mounting plate. Replace the plate if a hard impact has bent it.
- Check the drone's thrust range. A high-thrust drone can lift J.Jig off the ground.
- If the drone's attitude control has not been verified, place a heavy object on the support. An unstable drone can knock the product over.
- Install a safety net to protect the propellers and other parts of the drone.

**During testing**

- Stop the drone before approaching J.Jig.
- Keep fingers and objects away from the parts that move up and down.
- If the drone maneuvers too hard, repeated impact can break the ball joint. Stop immediately and correct the position control.

## Get in touch

For more information or to buy J.Jig, contact [contact@jmarple.ai](mailto:contact@jmarple.ai).