# Stormworks: Build and Rescue – Gearbox Test

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

Gearbox guide. Gear ratios review and testing. Research of efficiency of the gearbox. In the process of complementing …

## 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) 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. 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…

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By ATOM

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