From 5122c2ccb4236fb5f384bc0258172b0aba776ef9 Mon Sep 17 00:00:00 2001
From: maj00r <maj00r@host>
Date: Wed, 14 Oct 2026 00:03:06 +0200
Subject: [PATCH] fix(track): the treads of the wheels reach from the gauge
 line as far as a wheel 140 mm wide with the back faces 1360 mm apart does,
 820 mm from the axis of a standard gauge track, instead of a flat 100 mm

---
 world/TrackRails.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/world/TrackRails.h b/world/TrackRails.h
index 01362933..be54bb86 100644
--- a/world/TrackRails.h
+++ b/world/TrackRails.h
@@ -16,7 +16,9 @@ namespace track_rails {
 double constexpr flangeway { 0.045 };
 double constexpr blend { 0.015 };
 double constexpr tread_fade { 0.02 };
-double constexpr rolled_band { 0.1 };
+double constexpr wheel_width { 0.14 };
+double constexpr back_to_back { 1.36 };
+double constexpr rolled_band { wheel_width - ( 1.435 - back_to_back ) / 2.0 };
 double constexpr nose_tip { 0.012 };
 double constexpr middle_angle { 0.35 };
 double constexpr wide_angle { 0.785 };