RACE ENGINE TECHNOLOGY 159 June/July 2025

• Intro: The editor - Ian Bamsey channels the spirit of the American hero to discover what powers Aardema and Braun to attempt land speed records
• Upfront: KOH powertrains - Mike Magda discovers that success in the brutal King of the Hammers off-road race demands a powertrain with ample bottom-end grunt and relentless durability
• Dossier: Aardema V12 - Pete Aardema and Kevin Braun tell all to Mike Magda about the design and build of their two V12 engines
• Focus: Component and material testing - Matt Grant delves into the pressurised field of component and material testing for competitive racecar engines
• Obituary: Ed Pink - We pay tribute to Ed Pink, the giant of the race engine industry who made his mark over two thirds of a century
• Insight: Crankshaft oiling - Hiroshi Yajima discusses the finer points of past methods of low-pressure crankshaft bearing oil supply with Ian Bamsey
• Focus: Fluid pumps - Matt Grant gets to the heart of the fluid pumps used to ensure optimum performance and durability of racecar powertrains
• Expo: Powertrains - Innovation in products and services is geared toward extracting the maximum possible from motorsport powertrains. Andrew Noakes looks at some of the latest developments
• Insight: Radial Motion’s radial triple turbo - Engine innovators Radial Motion in Australia have developed a fascinating radial triple turbo. Ian Bamsey has a full report
• PS: Motorcycle e-superchargers - Honda is taking another look at electrically driven superchargers for motorcycles and we find out what they’re thinking