Drive two pulleys with one open belt and fixed axles

Original, untested video brief. No input image or generated result is supplied.

1. Task and boundary

Show one continuous belt around two separated pulleys mounted on fixed axles. A visible hand turns the crank on the driving pulley, and the belt carries that motion to the other wheel. Both wheels turn in the same direction from the chosen front view. Follow a belt mark along the route and a wheel mark on each rim so the connection can be inspected, not merely inferred from two spinning circles.

This is an untested visual method for a simple open, uncrossed belt layout. Use two readable pulleys and one closed belt loop already seated in their grooves. Exclude crossed belts, belt installation, variable tension, gear teeth, hidden motors and numerical speed-ratio claims. The target is connected motion in a short demonstration, not a calibrated transmission test.

2. Authorized first frame

Prepare a photograph or accurate drawing you own or have permission to use. Show two parallel axles on a fixed base, with the pulley faces visible and one continuous belt around them. Include the original hand at the left crank. One small existing mark on each wheel and a different mark on the belt should be distinguishable.

Use a fixed front view slightly high enough to read the belt seating. The upper run and lower run must not overlap in projection. Leave the crank path clear of the other wheel and keep both axle centers visible. Do not add floating labels or a cutaway mechanism.

3. Use the generator

Open the current image-to-video generator in a mode accepting your authorized first frame. Paste the complete prompt, check the available settings and cost estimate, then submit only when ready. This page supplies text; it does not upload an image or start a generation.

4. Prompt and timing

Start from my authorized image of two separated pulleys on fixed axles, one uncrossed closed belt seated around them, and the original hand holding the left crank. Lock the camera, base and axle centers. Turn the left crank clockwise slowly through a short continuous interval as viewed from this front side. Let the same belt travel around both rims and turn the right pulley clockwise from the same view. The upper straight run travels to the right and the lower straight run returns to the left. Keep the belt closed, uncrossed and seated against the existing pulley grooves. Follow its original mark along the loop without leaving a duplicate mark behind. Preserve each wheel mark on its own rim and both axle locations. Do not rotate the base, cross the belt, replace it with a rope having loose ends, add teeth or let either wheel slide sideways. Slow the crank to a stop and let both wheels and the belt stop together. No independent counter-rotation, camera move, cut or numerical ratio label.

Opening: identify the two axle centers, wheel marks, belt mark and separate upper and lower runs.
Middle: track the crank, both wheel marks and the traveling belt mark through several readable positions.
Ending: reduce the motion and stop the drive, checking that the other pulley and belt do not continue as unrelated loops.

These beats are author suggestions, not exact model timing guarantees. Adapt their proportions to the clip length actually available.

5. Inspect the output

After inspecting your own output, record a time or frame, visible observation and pass, fail or inconclusive judgment for each condition. A convincing ending alone does not verify the preceding action.

Both axle centers remain fixed relative to the same base.
The belt remains one uncrossed loop with distinct upper and lower runs.
The two pulley marks rotate in the same direction from the fixed front view.
The belt mark advances along the belt without copying onto either wheel.
The belt stays seated around each rim without opening a gap or passing through a pulley.
The final drive stop is followed by a coherent stop of the connected belt and second wheel.
If a hand hides the drive contact throughout, mark that coupling inconclusive.

6. Fix one failure

The wheels counter-rotate: preserve an uncrossed belt and state the viewing side before assigning directions.
The belt becomes two strips: retain a closed loop around both rims and inspect the curved end sections.
Marks stay painted on the screen: assign each mark to its original moving material, not the background.
The belt floats above a rim: improve the input view of the groove and shorten the motion.
One wheel keeps spinning after the stop: use a slower shared stop and remove independent spinning language.

7. Ending and limits

Finish with the hand on the original crank, both axle centers fixed and the seated loop stopped around the same pulleys.

Save your own generated result through the available result controls, together with the authorized input, exact prompt, settings and inspection notes.

No H3 generation, torque test, belt-friction measurement or speed-ratio verification is supplied. Matching directions and marks establish only visible continuity in the clip; they cannot validate a real drive under load.

The paired-gear task uses direct meshing and opposite rotation. The pulley-rope task follows loads on a rope. This task uses a closed uncrossed belt and two stationary shafts, with same-direction wheel motion and opposite travel along the two straight belt runs.