Every network has a speed (RPM) and a stress balance. Sources give stress capacity, machines use stress (their impact). Both scale with the speed: a machine with an impact of 4 uses 4 SU at 1 RPM and 32 SU at 8 RPM. On our test server a 
Water Wheel at 8 RPM gave 256 SU of capacity and a 
Millstone on it used 32 SU — exactly 32 × 8 and 4 × 8.
Warning When the machines need more than the sources can carry, the whole network is overstressed and stops. Add sources (or slow the network down) until the stressometer is back below its maximum.
Capacity of the sources
Stress units (SU) per RPM, from Create's default server settings (create-server.toml):
| Source | Capacity per RPM | Example |
|---|---|---|
| Water Wheel | 32 SU | 8 RPM → 256 SU (measured) |
| Large Water Wheel | 128 SU | |
| Windmill Bearing | 512 SU | needs at least 8 sails; 1 RPM per 8 sails |
| Hand Crank | 8 SU | |
| Copper Valve Handle | 8 SU | |
| Steam Engine | 1,024 SU | |
| Creative Motor | 16,384 SU | creative mode only |
Impact of the machines
| Machine | Impact per RPM |
|---|---|
| Crushing Wheel, Mechanical Press | 8 SU |
| Millstone, Mechanical Mixer, Mechanical Saw, Mechanical Drill, Deployer, Mechanical Pump | 4 SU |
| Mechanical Piston, Mechanical Bearing, Rope Pulley, Elevator Pulley, Turntable, Hose Pulley | 4 SU |
| Encased Fan, Mechanical Arm, Mechanical Crafter, Weighted Ejector | 2 SU |
| Chain Conveyor, Cuckoo Clock | 1 SU |
| Shafts, cogwheels, gearboxes, clutches, gearshifts, belts, gauges | 0 SU |
Water WheelBlock
Large Water WheelBlock
Windmill BearingBlock
Hand CrankBlock
Steam EngineBlockMillstoneMilling · 47 recipes
Mechanical PressPressing · 15 recipes
Mechanical MixerMixing · 11 recipes
Crushing WheelMilling · 102 recipesSpeed
- Large to small cogwheel doubles the speed, small to large halves it. Speed does not cost stress by itself — but every machine downstream uses its impact × the new, higher RPM.
- Create's default settings call 30 RPM "medium" and 100 RPM "fast"; the fastest any network may turn is 256 RPM.
- The Mechanical Mixer needs at least medium speed (Create's code asks for it), so a water wheel alone (8 RPM) is too slow; geared up to 32 RPM it mixed brass on our test server.
- Faster machines finish their work sooner: Create scales processing time with the speed.
Use the 
Stressometer (made from a 
Speedometer) or 
Engineer's Goggles to see the numbers of a network.
Compass + Andesite Casing → Speedometer
Speedometer → Stressometer
String#c:strings
Any #c:glass_blocks- Tiled Glass
- Framed Glass
- Horizontal Framed Glass
- Vertical Framed Glass
- Glass
- White Stained Glass
- Orange Stained Glass
- Magenta Stained Glass
- Light Blue Stained Glass
- Yellow Stained Glass
- Lime Stained Glass
- Pink Stained Glass
- + 10 more
Golden Sheet#c:plates/goldAny #c:glass_blocks- Tiled Glass
- Framed Glass
- Horizontal Framed Glass
- Vertical Framed Glass
- Glass
- White Stained Glass
- Orange Stained Glass
- Magenta Stained Glass
- Light Blue Stained Glass
- Yellow Stained Glass
- Lime Stained Glass
- Pink Stained Glass
- + 10 more
any String + 2 × any Tiled Glass (#c:glass_blocks) + any Golden Sheet → Engineer's Goggles