Every page on Engineered By Design. Free tools, calculators, engineering reference, motorsport data and project documentation.
BSFC & Injector Sizing
Brake specific fuel consumption, thermal efficiency and injector flow rate. Three linked calculators with fuel type selection.
Power & Torque
Convert between power and torque at any RPM. kW, BHP, Nm and lb-ft with live calculation.
Throttle Body Sizing
TB diameter from power target, air velocity checker, reverse restriction test, ITB and single TB modes, and donor TB reference data.
Race Fuel Load
Fuel required for a race or sprint event from lap count, lap time and consumption rate.
Tyre Size Calculator
Overall diameter, loaded radius, rolling circumference and speedometer correction from tyre sidewall markings.
Chassis Calculators
Skidpad lateral G-force from timed laps, and coil spring rate from physical wire and coil measurements.
Hydraulic Cylinder
Areas, volumes, flow rates, power and force for hydraulic cylinders. Full working with SVG diagram.
Race Fuel Reference
Fuel specification and blending data for race applications.
Metric Thread Drill & Tap
ISO metric coarse and fine thread tap drill sizes. M1 to M68 with ISO 68-1 profile reference.
Bolt Torque Guide
Standard tightening torques for metric bolts by grade. Dry and lubricated values.
Loctite Product Guide
Threadlock, pipe sealant and retaining compound selector. Colour reference, temperature ratings and motorsport use cases.
Preferred Metric Threads
ISO preferred metric thread series. First, second and third choice thread designations.
Imperial Thread Data
UNF, UNC and BSF data including tap drill sizes and thread form reference.
Hardness Conversion
HRC, HRB, HV, HB and tensile strength conversion table for steel and common alloys.
Conversion Factors
Engineering unit conversions — length, area, volume, mass, force, pressure, temperature and more.
RAL Colour Chart
Full RAL 9000 colour reference with hex values, grouped by colour family. For paint specification.
Piston Kinematics & Dynamics
PPP-106 engineering study — piston acceleration, peak force, con-rod stress and factor of safety. Includes interactive calculator.
IP Rating Lookup
Ingress Protection ratings for electrical enclosures. First and second digit reference with real-world examples.
Piston Anatomy
Component identification, ring groove layout, pin boss and skirt terminology. Engine builder reference with labelled diagrams.
Lap Analysis Workflow
How to find time in your data. Speed trace overlays, braking point identification, sector breakdown and setup correlation. AiM EVO4S and VBOX HD2.
Data Channel Reference
What every channel actually tells you. Trace shapes, typical G-force ranges, IMU mounting checks, and how to tell bad data from bad driving.
Setup Correlation
Turning data into setup decisions. Linking logged channels to chassis changes and validating whether an adjustment has had the intended effect.
Common Mistakes
The errors that cost time and lead to wrong conclusions. Misread traces, poor sensor mounting, bad reference laps and how to avoid them.
Godden Speedway Engine
Single cylinder speedway specification engine build. 63 BHP from under 30 kg — 250 BHP per litre NA. FEA-led rocker arm redesign.
DEP Pipes — Exhaust Tooling
Manufacturing tooling design packages for DEP Pipes, Kent. KX500, PH20021 and PMR250 product lines. Formal drawing packages to production standard.
ZONE Vehicle Inspection System
Full metalwork design for the ZONE ANPR vehicle inspection system. Deployed commercially at BMW dealerships across the UK.
Gear Ratio Calculator
Road speed in each gear from RPM, gear ratios, final drive and tyre size.
Compression Ratio
Swept volume, clearance volume and CR from bore, stroke, head and gasket dimensions.
PPP-106 Build Page
Full build documentation for the Peugeot 106 Rallye sprint car — R6 ITBs, staged injection, engine development history.