V1.2.0

What's New

• Garage — manage multiple kart profiles, each with their own ring type, eccentric sizes, bore spacing, and calibration saved per kart
• Session structure — sessions now organised into Track → Event → Day → Session with a breadcrumb bar always showing your active context
• Auto-save — active session saves every 3 seconds automatically
• Settings page — configure units, pressure unit, date format, autosave interval, and default kart

Improvements

• Scatter map dots are larger with improved colour scales
• Sliders now snap to valid positions while dragging with live angle readout
• Compact ring image now shown next to the scatter graph
• Laser Visualiser, now shown vertically alongside the scatter map with independent ± camber axis ranges
• Toe trace slope now saved per kart
• Custom holes capped at 100

Upgrading from V1.1.0

Existing .json files are automatically migrated on first launch — no action needed.

V1.1.0

Cam/Castor & Ring Configuration

• OTK 20-hole and Birel 18-hole support with preloaded defaults
• Custom ring — define your own hole count, angular offset, and eccentricity for any brand
• Independent top/bottom eccentric sizes (mm)
• Configurable hole pitch — set the centre-to-centre spacing between the two eccentric seats in mm (default 65 mm)
• Free (6°) mode — continuous 6° steps for rings with no locking screw
• Custom holes mode — snaps to valid locking-screw positions for your hole count
• Hole offset — shifts the hole grid so position numbers align with the markings on your physical ring

Cam/Castor Scatter Map

• Full setup space map — every valid eccentric combination plotted as a dot in cam/castor space
• Click to set position — click any dot to instantly jump the sliders to that combination
• Purple / orange arc paths — purple shows where the dot moves if you rotate only the top eccentric; orange for the bottom. Your current position always sits at their intersection
• Inboard / Outboard variants — most cam/castor values are reachable by two ring combinations (one wider track, one narrower). The radio button selects which variant the chart colours and applies when you click
• Hover tooltip — hover over any dot to see its exact cam and castor values
• Colour modes:
  • Load Index — front-end load distribution index
  • Diagonal Grip — front-to-rear diagonal grip balance
  • Resultant Toe — predicted average toe per combination (requires calibration)
• Colourbar position indicator — a live marker on the colourbar shows exactly where your current setup sits on the active scale

Track Width & Wheelbase Graph

• Side-by-side delta map — shows how each ring combination shifts your front track width and wheelbase relative to nominal
• Click to set position — same click-to-apply behaviour as the cam/castor map

Geometry Visualiser (4-panel)

• Front-Left and Front-Right views — shows camber angle with IN/OUT direction labels
• Side castor view — shows the kingpin axis tilt with a zero-castor reference line and FWD direction
• Overhead toe view — top-down schematic of both front wheels, toe angle exaggerated 2.5× so small changes are visible; labelled TOE IN (green), TOE OUT (amber), or NEUTRAL (grey)

Laser Visualiser

• Digital aligner replica — mirrors what front-end alignment gauges would read in real time as you move the eccentrics
• Left (red) and right (blue) dots tracked independently — asymmetric setups like Birel show the two sides diverging, which is correct
• Arc Trace — toggle overlaid arc paths showing where each dot would move if you rotated each ring independently (purple = top, orange = bottom)
• Hover tooltip — hover near either dot to see its exact toe and camber mm reading
• Adjustable camber axis range — set the ± mm scale; press Enter or click away to apply

Toe Calibration

• Preset calibration table — ring-specific guided positions (9 for OTK, 7 for Birel) with required (grey) and optional rows; click any position label to jump the sliders straight to it
• Camber readings (grey rows) — calibrate the Laser Visualiser by entering your aligner's camber mm alongside toe readings
• Calibration quality indicator — colour-coded status: green (6+ points), orange (4–5), red (3 or fewer); shows RMS fit error in mm
• Additional manual points — add extra measured positions beyond the presets; individual points can be removed, or the entire set cleared
• Calibration reset — wipes all calibration data and restores geometry defaults
• Calibration context — records which ring position and how many points were used when the model was last applied, so you can verify it matches your current setup
• Import calibration — load calibration data from any previously saved JSON file without replacing your current setup; warns on ring-type mismatch

Toe Trace (Tie-Rod Adjustment)

• Live tie-rod modelling — enter how much cam changes per mm of toe (your kart's coupling) and the current rod offset in mm
• All readouts update instantly — the Laser Visualiser dots, the overhead toe view, the setup readout, and the toe range bar all reflect the adjusted physical toe in real time
• Saved in the setup file — rod offset and slope are preserved across sessions

Toe Adjustment (Find Setup)

• Target toe entry — enter a target toe per side in mm; press Find Setup
• Accounts for rod offset — if Toe Trace is active, the search targets the correct physical toe automatically
• Search priority slider — slide between Setup (minimise cam/castor change) and Toe (maximise toe accuracy)
• Trade-off graph — scatter of every valid position; X = average toe, Y = cam/castor drift from current. A red envelope line shows the minimum drift achievable at each toe value. Click any dot to jump to it
• Found-setup marker — gold star (★) on the trade-off graph and orange diamond (◆) on the scatter map; click either to apply the result

Toe Range Bar

• Full range visualiser — shows the achievable toe across all ring positions as a colour bar; set your own min/max scale

Sessions

• Named sessions within a single file — every session stores ring config, eccentric angles, calibration, toe trace, and notes
• Auto-save on switch — current session is silently saved before loading another
• Right-click context menu — add, rename, or delete sessions
• Per-session notes — freetext notes field, blank on new session

Data Export

• Save / Quick Save (Ctrl+S) — save the full setup including calibration and all sessions
• Export as PNG — full-window screenshot
• Export as Excel (.xlsx) — formatted multi-sheet workbook covering summary, sessions, all ring positions, and calibration data

Built-in Reference Guides

• Help Guide — full walkthrough of every feature in the app
• Toe Calibration Help — step-by-step calibration instructions with colour-coded status explained
• Kart Handling Cheat Sheet — quick reference for understeer, oversteer, rear hop, exit snap, and what each front-end adjustment does

General

• In-app update notifications — banner appears when a newer version is available
• Responsive layout — scales to your screen size
• High-DPI display support — sharp on scaled or high-resolution Windows screens