What the thread found

• A motor can slip off a focus rod when the torque causes the rod to bend away from the lens gear, and bridging the motor host rod to another rod with a 15mm bridge clamp prevents this bending and solves the problem
• Mounting the motor so its gear engages the lens at the top, bottom, or side position reduces slippage compared to other angles
• Using a dogbone with independent tightening screws on both ends instead of a single-handle design minimizes slippage
• Wrapping gaff tape around the rod before clamping the motor increases friction and can prevent slippage
• A bongo tie around the motor and opposite rail can stabilize the motor against slippage
• Motor power should not be maximized during operation as it increases the risk of the motor disengaging from the barrel
• Mounting a rod above the lens with the motor hanging down uses gravity to prevent the motor from jumping away
• Ensuring cutouts on 19-15mm adapters align with the motor rod clamp cutouts reduces slippage
• Manual calibration should stop before the lens hard stop rather than at it, as the motor may jump off when hitting the stop

Depends on

• The physics of why gear positioning angle reduces slippage is not fully understood by practitioners
• Solutions for slippage depend on rod material, with aluminum and carbon fiber being more prone to bending than steel
• Longer rods increase the likelihood of bending-induced slippage
• The precision of manufactured components varies considerably and affects slippage problems

Parts

Follow Focus

Same gear or parts

1. 2026Pulling focus and zoom yourself while operating, especially on live showsOperator practice
2. 2026Swapping an ARRI ALEXA 35 between tripod/studio and Steadicam® mounting: baseplate choice and fastest workflow.FacebookSteadicam operators group
3. 2025LC-1 (Lens Control-1) follow focus system: wired architecture, motors, and early operational experience (1990s).FacebookThe Steadicam Group
4. 2024Modifications to a Steadicam Scout rig for expanded power distribution and connectivityGeneral Discussion