2007Sled forum
Steadicam AR rig configuration and operation for movie production
19 years old. Gear and prices may have changed since.
What the thread found
- An AR rig mounted on an XCS sled with an Arri 235 camera, Preston motor, Angenieux lens, and Dionic batteries is heavier than standard configurations but manageable for running shots.
- Bubble levels should be mounted on the AR to verify levelness and detect keystoning effects, rather than relying only on framing or eye judgment.
- Monitor placement low on the sled (5 lb Transvideo assembly) improves weight distribution and gimbal positioning compared to higher mounting.
- Adding mass to the bottom of the sled through battery placement helps maintain proper gimbal clearance and arm rotation around the magazine.
- Preston motor cables can be extended up to 30 feet long without performance issues.
- During running shots, the operator must look ahead to monitor their path and rely on feel for frame composition rather than constant monitor reference.
- Dynamic balance is compromised when using an AR on a sled, requiring manual inertial control through shot adjustment and operator awareness.
Depends on
- The described rig is specifically for the XCS sled configuration and may not apply to other sled models.
- Weight considerations change substantially when different camera models are used instead of an Arri 235.
- The technique described assumes experienced operators and assistants familiar with inertial compensation.
- Longer motor cables up to 30 feet represent manufacturer guidance but were not tested in the thread.