CrankShaft
An unofficial 1.12.2 backport of Flywheel
About this Mod
CrankShaft is an unofficial 1.12.2 backport of Flywheel by Jozufozu and the Engine-Room team.
Requirements
- Cleanroom loader (vanilla Forge
1.12.2 is not supported) and JDK 25+
Mod Compatibility
None of the mods below are required. The lists describe how each interacts
with CrankShaft when both are installed. Any mod not listed here can be
assumed compatible — please file an issue if you find otherwise.
Patched
CrankShaft has explicit compat code for these.
- Renderers: Sodium ports (Neonium, Vintagium, Relictium, Celeritas),
Nothirium (with RenderLib). - Lighting engine: Alfheim, Cubic Chunks.
- Smart animated textures: LoliASM (aka CensoredASM).
- Dynamic lights: Celeritas Dynamic Lights, OptiFine's Dynamic Lights.
- Uniforms: AquaAcrobatics (swimming), Wings (flying), Fluidlogged-API
(fluidlogged blocks) are recognized by CrankShaft's uniform writers.
CrankShaft fixes Celeritas Dynamic Lights' entity lighting on Neonium, Vintagium, and
Relictium.
Partially compatible
Some of their features do not extend to Flywheel-instanced visuals.
- OptiFine — shaderpacks are not supported.
Incompatible
Both mods will load and run, but their interaction is broken on Flywheel-instanced
visuals.
- Albedo (elucent) and ColoredLux (zeith / dragon-forge) — they bind
their own GL programs for the world and entity render passes.
Available Versions
How to Install CrankShaft on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set forge Loader
In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).
Install Mod
Open the mod browser in the dashboard and search for "CrankShaft". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.12.2
Server-side
✗ UnsupportedRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
CrankShaft server crashes on startup – what to do?
Most common cause: wrong forge version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.12.2). You can switch loaders with one click in the panel.
Is CrankShaft compatible with forge?
CrankShaft officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with CrankShaft – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if CrankShaft consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install CrankShaft with just one click on your server.