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Aqu1tain edited this page Apr 24, 2026 · 1 revision

FAQ

Minecarts don't ride on copper rails

Update to 0.2.0 or later. Before the fix, copper rails were not in the minecraft:rails block tag.

How do I actually reach 40 blocks per second on an Unaffected copper rail?

Copper rails raise the cap but do not push the cart. To hit the tier speed:

  • Launch it with a powered rail at the start.
  • Use a Furnace Minecart with fuel, which self-propels along its facing.
  • Run the cart downhill.

Once moving, the 90% momentum floor keeps the cart above 90% of its current speed for one tick, so a single low-tier rail between two high-tier ones does not crash the speed instantly.

Why did my copper rail turn green?

It oxidized. Copper rails weather naturally over time like vanilla copper blocks. The progression is Copper Rail -> Exposed -> Weathered -> Oxidized. Each tier caps max speed at 40, 20, 10, 5 blocks/sec respectively. Wax a rail with honeycomb to freeze its current tier. See Copper Rails.

Can I scrape oxidation?

Yes. An axe removes one tier of oxidation. An axe on a waxed rail removes the wax first, leaving the unwaxed version at the same tier.

Does the furnace minecart still accept only coal?

No. It accepts any item registered in the fuel registry (coal, charcoal, planks, blaze rods, lava buckets, etc). Burn duration matches the fuel's actual value.

My furnace minecart pushes in the wrong direction

The direction is set at placement.

  • Placed by a player: faces away from you.
  • Placed by a dispenser facing North or West: faces away from the dispenser.
  • Placed by a dispenser facing South or East: default orientation.

Pick up and place again to reorient.

How many minecarts can I put in a train?

Up to 7 trailers behind a fueled locomotive. 8 carts total. A full train's max speed is 60% of the locomotive's base cap (5% penalty per cart in chain, locomotive included).

How do trains refuel themselves?

The first trailer must be a chest or hopper minecart. When the locomotive's fuel drops below 100 ticks, it pulls one fuel item from that trailer's inventory and adds its full burn duration. Only the first trailer is scanned.

My train sometimes disconnects on sharp turns

Tight 90-degree turns at max speed can push a trailer outside the 4-block snap radius for a tick. It should re-sync on the next tick or two. If it keeps disconnecting, try softer curves or a slower rail tier between the locomotive and the turn.

The leash between carts looks weird

It uses vanilla leash rendering, which is a brownish roped line in modern Minecraft. Render style is the game's default.

Where did my trailers go after I went through a portal?

Portal travel immediately breaks the train. Trailers left behind on the source side keep their positions and can be re-attached if you come back. Locomotive and trailers do not travel together through portals in this version.

Does this mod work with other minecart mods?

The mod mixes into several vanilla minecart classes. Mods that modify the same methods (AbstractMinecart.comeOffTrack, NewMinecartBehavior.tick, NewMinecartBehavior.getMaxSpeed, MinecartFurnace.tick, MinecartFurnace.applyNaturalSlowdown, MinecartFurnace.addFuel) may conflict. Test in isolation first.

Can I fire arrows / TNT / spawn eggs from a dispenser minecart?

Not in this version. The dispenser minecart ejects items as loose ItemEntity drops, not through vanilla dispenser behaviours. Items come out, they do not auto-trigger.

Where are the source and issue tracker?

Start Here

Systems

Mechanics

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