## Guide for Stormworks: Build and Rescue – Gearbox Test

## Intro

Stormworks v1.1.6

## Gearbox Ratio

Gearbox direction | Motor >> Drive | 1:-1 | 1:1 | 5:6 | 2:3 | 5:9 | 1:2 | 2:5 | 1:3 |

Gearbox direction | Motor << Drive | 1:-1 | 1:1 | 6:5 | 3:2 | 9:5 | 2:1 | 5:2 | 3:1 |

**Motor >> Drive**

Ratio | Coefficient |

1:1 | 1 |

5:6 | 0.83 |

2:3 | 0.67 |

5:9 | 0.56 |

1:2 | 0.5 |

2:5 | 0.4 |

1:3 | 0.33 |

**Motor << Drive**

Ratio | Coefficient |

1:1 | 1 |

6:5 | 1.2 |

3:2 | 1.5 |

9:5 | 1.8 |

2:1 | 2 |

5:2 | 2.5 |

3:1 | 3 |

## Converting power transmission (Theory)

**Gearbox no load**

Torque (Motor >> Drive) | 1.95 | 1.792 | 1.633 | 1.528 | 1.475 | 1.38 | 1.317 |

Gearbox | 1:1 | 6:5 | 3:2 | 9:5 | 2:1 | 5:2 | 3:1 |

Torque (Motor << Drive) | 1.95 | 2.14 | 2.425 | 2.71 | 2.9 | 3.375 | 3.85 |

The torque sensor adds 1 to the measurements, without adding real resistance. Let’s check the results of the force conversion.

Let’s calculate the ratio 1:1, subtract 1 unit added by the torque sensor. ` 1.95-1=0.95 We got a gearbox efficiency of 95%`

Let’s calculate the ratio 3:1, subtract 1 unit added by the torque sensor. And divide by the gearbox ratio. ` 3.85-1=2.85 2.85/3=0.95 We got a gearbox efficiency of 95%`

Let’s calculate the ratio 1:3, subtract 1 unit added by the torque sensor. And multiply by the gearbox ratio. ` 1.317-1=0.317 0.317*3=0.951 We got a gearbox efficiency of 95%`

The no-load gearbox converts power as expected.

**Gearbox load 1 torque**

Torque (Motor >> Drive) | 2.9 | 1.63 |

Gearbox | 1:1 | 3:1 |

Torque (Motor << Drive) | 2.9 | 6.7 |

Let’s calculate the ratio 1:1, subtract 1 unit added by the torque sensor. Subtract torque 1 of the small generator ` 2.9-1=1.9 1.9-1=0.9 We got a gearbox efficiency of 90%`

Let’s calculate the ratio 3:1, subtract 1 unit added by the torque sensor. Divide by gearbox ratio. Subtract torque 1 of the small generator ` 6.7-1=5.7 5.7/3=1.9 1.9-1=0.9 We got a gearbox efficiency of 90%`

Let’s calculate the ratio 1:3, subtract 1 unit added by the torque sensor. Multiply by the gearbox ratio. Subtract torque 1 of the small generator ` 1.633-1=0.633 0.633*3=1.899 1.9-1=0.9 We got a gearbox efficiency of 90%`

All right

## Converting power transmission (Small Electric Motor)

**Small Electric Motor > Torque Meter > Gearbox > Torque Meter > Medium Generator**

Rps | Torque | Ratio | Rps | Torque | Generate |

8.53 | 33 | Direct | 8.53 | 33 | 17.53 |

8.36 | 32.45 | 1:1 | 8.35 | 33.85 | 16.80 |

6.97 | 38.34 | 6:5 | 8.36 | 33.37 | 16.84 |

5.58 | 47.17 | 3:2 | 8.37 | 32.9 | 16.88 |

4.66 | 56 | 9:5 | 8.37 | 32.58 | 16.9 |

4.19 | 61.9 | 2:1 | 8.37 | 32.42 | 16.91 |

3.36 | 76.62 | 5:2 | 8.38 | 32.14 | 16.93 |

2.8 | 91.35 | 3:1 | 8.38 | 31.95 | 16.95 |

The final speed of the generator is approximately the same at different gearbox ratios. 3:1 efficiency even slightly higher than 1:1. Let’s count.

RPS of the motor at a ratio of 1:1 8.36 divided by a gearbox ratio of 3:1 ` 8.36/3=2.78 `

A little less than it turned out during testing

Torque at a ratio of 1:1 32.45, subtract 1 unit added by the torque sensor. And multiplied by a gearbox ratio of 3:1 ` 32.45-1=31.45 31.45*3=94.35 `

Resistance is greater than it turned out during testing

And although the efficiency of the gearbox turned out to be more than 100%, the difference is subtle, but it is a bug and needs to be corrected.

## Converting power transmission (Small Engine)

**Small Engine > Torque Meter > Gearbox > Torque Meter > Medium Generator**

Rps | Torque | Ratio | Rps | Torque | Generate |

17.66 | 41 | Direct | 17.66 | 41 | 75.18 |

17.33 | 40.45 | 1:1 | 17.29 | 41.45 | 72.01 |

12.29 | 46.34 | 6:5 | 14.71 | 39.7 | 52.19 |

8.16 | 55.17 | 3:2 | 12.22 | 37.97 | 35.97 |

5.9 | 64 | 9:5 | 10.61 | 36.8 | 27.16 |

4.93 | 69.9 | 2:1 | 9.84 | 36.22 | 23.34 |

3.4 | 84.62 | 5:2 | 8.5 | 35.18 | 17.4 |

2.55 | 99.35 | 3:1 | 7.65 | 34.48 | 14.09 |

The final speed of the generator is very different for different gear ratios of the gearbox. Efficiency 3: 1 is several times lower than 1: 1. Let’s count.

RPS of the motor at a ratio of 1:1 17.33 divided by a gearbox ratio of 3:1 ` 17.33/3=5.78 `

The final speed should be more than double.

Torque at a ratio of 1:1 40.45, subtract 1 unit added by the torque sensor. And multiplied by a gearbox ratio of 3:1 ` 40.45-1=39.45 39.45*3=118.35 `

The load should be more than the testing showed.

The results turned out to be strange, something is definitely missing here. Perhaps the torque that I still can’t catch somehow affects.

## In search of torque diesel engines

**Small Engine > Torque Meter > Medium Generator x3** **Small Engine > Torque Meter > Gearbox > Torque Meter > Medium Generator** **Small Engine x3 > Torque Meter > Gearbox > Torque Meter > Medium Generator** **Medium Engine > Torque Meter > Gearbox > Torque Meter > Medium Generator**

Rps | Torque | Ratio | Rps | Torque | Generate |

6.49 | 101 | Direct | 6.49 | 101 | 30.43 |

2.55 | 99.35 | 3:1 | 7.65 | 34.48 | 14.09 |

6.37 | 119.35 | 3:1 | 19.07 | 40.82 | 87.66 |

6.37 | 119.35 | 3:1 | 19.07 | 40.82 | 87.66 |

**no conclusions to be continued…**

## My other guides

https://steamcommunity.com/sharedfiles/filedetails/?id=2405685030

https://steamcommunity.com/sharedfiles/filedetails/?id=2404061436

https://steamcommunity.com/sharedfiles/filedetails/?id=2403852438

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