How to Level Dolly Track on Uneven Ground
Last Updated: October 22, 2026
Quick Summary
To level dolly track on uneven ground, survey the line first, then lay the rails on shims and supports so the rail sits at a constant height. Level one section at a time, checking side-to-side first, then end-to-end, and confirm the rails stay parallel before a test roll.
- Space supports every 60-90 cm on soft or stepped ground, and at the ends and every seam on firm ground.
- Use a spirit level at least 60 cm long so it bridges small dips and reads the rail's true plane.
- Measure rail spacing at the start, middle and end so the dolly does not crab sideways.
- Push the dolly through the full run by hand twice before mounting the camera.
- Secure the track ends first, since an unsecured end is the most common cause of a dolly crash.
Table of Contents
- What You'll Need Before You Level Dolly Track
- Step 1: Survey the Ground and Set Your Track Line
- Step 2: Lay the Rails and Build Supports for Dolly Track Shims and Supports
- Step 3: Level Each Section and Verify Camera Dolly Track Alignment
- Step 4: Test the Move and Troubleshoot Uneven Movement
- Dolly Track Safety Checks Before the Camera Goes On
- Setup on Different Surfaces: Snow, Gravel and Slopes
- Conclusion
- Frequently Asked Questions
What You'll Need Before You Level Dolly Track
To level dolly track on uneven ground, start with the right kit, not the right technique. Get the gear together first, and the setup takes minutes instead of hours.
Here is the short answer: leveling dolly track is the process of shimming, supporting and aligning rails so a camera dolly rolls on a flat, stable plane even when the ground underneath is not flat. The track does the work.
Tools and Materials Checklist
Gather these before you touch a rail:
- Dolly track sections and splicers
- Track ends and center supports
- Leveling pads
Step 1: Survey the Ground and Set Your Track Line
Walk the full path before you lay a single rail. Look for soft spots, roots, curbs and drainage grates.
Check the slope next. A gentle grade is fine. A step or crown in the middle is not, and that is where supports come in.
Keep these survey rules in mind:
- Clear the line of debris, cable and anything the dolly could hit
- Note where the ground changes height, since those points need support
- Confirm the camera's start and end marks sit inside the track run
A common mistake is laying track first and discovering the problem later. Survey costs five minutes. Relaying track costs twenty.
Step 2: Lay the Rails and Build Supports for Dolly Track Shims and Supports
Lay the first rail on the marked line, then set the second rail parallel to it. Join sections with splicers and check the seam sits flush.
Now build the support layer. Dolly track shims and supports do one job: hold the rail at a constant height above uneven ground.
Support options, from simplest to most adjustable:
- Wood wedges: fast, cheap, ideal for small dips. Our WLG Wedge is sized for track work at $4.25.
- Leveling pads: pre-cut pads that spread load and absorb small bumps. The Matthews leveling pads at $57.65 are a grip-van staple.
- Adjustable stands: best for height changes over 5 cm.
Support Spacing and Load Limits
Space supports closer together as the ground gets rougher. On firm, flat ground, supports at the track ends and every seam are usually enough. On soft or stepped ground, add a support every 60-90 cm.
Respect the load limit. The Dana Dolly Track Kit supports up to 100 pounds of camera, accessories and dolly, and that ceiling assumes proper support underneath.
Step 3: Level Each Section and Verify Camera Dolly Track Alignment
Level one section at a time, working from one end to the other. The goal is a rail plane that is flat side-to-side, flat end-to-end, and parallel between the two rails. Most practitioners find that measuring in a fixed order prevents chasing the bubble back and forth.
Measure Side-to-Side First
Set a spirit level across both rails at a support point, sitting on the rail tops rather than the web or the splice plates.
A 60 cm level is the practical minimum because it bridges small dips and reads the rail's true plane. For spans longer than the level, use a straightedge laid across the rails and set the level on top of it.
Then Measure End-to-End
Side-to-side level alone will not catch a rise or dip along the run. Lay the level along the top of each rail, or hold a straightedge along the rail and set the level on it, and read the grade.
For long runs, a taut string line is faster than leapfrogging a level. Stretch a line above the rail top, sight along it, and look for sag or humps between supports.
Confirm the Rails Are Parallel and Matched in Height
Measure the distance between the rails at the start, middle, and end of the run with a tape. The spacing should match the dolly's wheel gauge within a few millimeters.
Then measure rail height at both ends with a tape from a common reference, such as a chalk line on the ground or a fixed mark on each stand.
Verify with a Test Roll
Push the dolly through the full run by hand before the camera goes on. A clean test roll confirms what the instruments read. Listen for bumps, feel for wobble, and watch the wheels for lift at any point.
Run the test twice. The second pass tells you whether a fix held or whether a support settled under the dolly's weight.
Step 4: Test the Move and Troubleshoot Uneven Movement
Push the dolly through the full run by hand before the camera goes on. Listen and feel for bumps, wobble and noise.
Troubleshooting uneven movement:
| Symptom | Likely Cause | Fix |
|---|---|---|
| Dolly bumps at one spot | High wedge or debris under rail | Re-level that support point |
| Dolly drifts sideways | Rails not parallel | Re-measure rail spacing |
| Rail flexes mid-span | Support spacing too wide | Add a support or stand |
| Creaking or noise | Loose splicer or dry wheel | Tighten seam, check wheels |
| Dolly slows on a grade | Slope not compensated | Add height at the low end |
Run the test twice. The second pass tells you whether the fix held.
Dolly Track Safety Checks Before the Camera Goes On
Run these dolly track safety checks every time, no exceptions:
- Push down hard on each support to confirm it is seated
- Check every splicer pin and clamp is tight
- Confirm no cable or sandbag sits under a rail
- Verify the track ends are secured so the dolly cannot roll off
A dolly that rolls off an unsecured end takes the camera with it. Secure the ends first.
Setup on Different Surfaces: Snow, Gravel and Slopes
Each surface needs its own preparation and its own support choice. The leveling method stays the same, but what you put under the rail and how often you re-check changes with the ground.
Grass and Soil
Grass hides soft spots, so walk the line and press a boot heel into the ground at each support point before you lay rail. Set leveling pads or short boards under each support to spread the load, then drive stakes or sandbag the stands so they do not creep. After the first test roll, re-check level at every support, since soil compacts under the dolly's weight.
Gravel
Rake the line flat, then set a board or pad under each support to spread the load. Loose gravel shifts under weight, so re-check level after the first test push and again after the camera is mounted. Keep gravel out of the wheel grooves by sweeping the rail tops before each pass.
Pavement and Indoor Floors
Hard surfaces are the easiest to level but the least forgiving of debris. Sweep the line, check for crown or drainage fall, and use thin shims rather than thick wedges so the rail sits close to the surface. On indoor floors, protect the surface with pads under stands and tape down cable so it cannot catch a wheel.
Snow and Ice
Clear the line down to a firm base, then pack the snow and set supports on leveling pads so they do not sink. Keep snow from packing into the wheels by brushing the rail tops between passes. In freezing conditions, metal rails contract and splicers can loosen overnight, so re-check seams and level at the start of each shooting day.
Slopes
Build height at the low end with stands or stacked wedges. Never try to level a slope by shimming one end only, since that tilts the whole run. On a sustained grade, add supports closer together so the rail does not sag between them, and confirm the dolly's brake or tether can hold it when parked.
Transition Points
Where the ground changes surface, such as grass meeting pavement, add a support on each side of the transition and check level on both.
For portable runs, the Dana Dolly Portable Aluminum Pipe Kit at $840.00 packs six 39" pipe sections into a carry bag, which makes it easy to reset a line when the ground changes.
Conclusion
Uneven ground is the norm on location, not the exception. Survey the line, support the rails, level one section at a time, and test the move before the camera goes on.
When you need track, wedges, pads or support gear that holds up on real sets, Walter Lighting & Grip stocks professional grip equipment and expendables for film and television crews.
Frequently Asked Questions
Can you use shims to level dolly track on uneven ground?
Yes. Wood wedges and leveling pads are the standard way to bring low spots up to height. Slide a wedge under the rail or support, tap it until the bubble reads level, then check that it cannot slide out sideways. Stack shims only as high as you can keep stable, and never rely on a single loose wedge under a loaded section. A leveling pad under the wedge spreads the load on soft ground and keeps the stack from sinking.
How do you keep dolly track from shifting during a shot?
Secure every support point, not just the ends. Stake or sandbag the track ends and any center supports, and check that splicers are fully seated on both rail sections. On smooth floors, use rubber pads or grip tape under the rails. On soft ground, drive stakes through the support feet. After the first test pass, re-check alignment, since a rail that shifts a few millimetres during the rehearsal will drift further once the camera weight rolls over it.
What should you do if dolly track rocks or flexes?
Stop and find the low support. A rocking rail usually means one support point is short, so add a shim or adjust the support height there rather than at the ends. Flex in the middle of a span means the supports are too far apart for the load, so add a center support. Re-level that section, run the dolly through the full move by hand, and listen for creaking or a change in rolling resistance before mounting the camera.
How do you check that dolly track is straight and stable?
Run a string line or a straight edge along the outside of both rails and sight down the length of the track. Check level at each support point and at the joints, then push the dolly through the entire move by hand. A straight, stable track rolls with even resistance and no side-to-side wander. If the dolly pulls to one side, the rails are out of parallel or a joint is misaligned, so loosen the splicers and reset that section.