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Editorials on the economy, technology, and lifestyle by Dr Jiulin Teng
Cover for post Designing the Engine Block for a 3L NA 11.5k-rpm V12—If I Had a Car Company 03
14 Jan 2026
Designing the Engine Block for a 3L NA 11.5k-rpm V12—If I Had a Car Company 03
Previously, I laid out the specifications of the PC301, 3L naturally-aspirated V12 engine that I would build if I had a car company. Today, let us delve into the details of the engine block.
Cover for post Designing the 3.0L NA 11.5k-rpm V12 Engine—If I Had a Car Company 02
12 Jan 2026
Designing the 3.0L NA 11.5k-rpm V12 Engine—If I Had a Car Company 02
As promised previously, today I lay out the specifications of the 3.0L NA V12 engine that I would build if I had a car company for the working enthusiasts.
Cover for post A New Automaker for Working Car Enthusiasts—If I Have a Car Company 01
10 Jan 2026
A New Automaker for Working Car Enthusiasts—If I Have a Car Company 01
What I would do if I had a car company today? This article talks about my motivations, the types of cars that I want to build, and what value this exercise brings to my readers.
Cover for post Ford 10R–GM 10L 10-Speed Automatic Transmission Deep Dive (10R80 / 10L80 and variants)
07 Jan 2026
Ford 10R–GM 10L 10-Speed Automatic Transmission Deep Dive (10R80 / 10L80 and variants)
The Ford-GM 10-speed is an evolution of the ZF 8HP that doubles down on the original’s gear train design and philosophy. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
Cover for post Toyota / Aisin AWR10L65 10-Speed Automatic Transmission Deep Dive (AGA0 /AJA0)
04 Jan 2026
Toyota / Aisin AWR10L65 10-Speed Automatic Transmission Deep Dive (AGA0 /AJA0)
The Toyota–Aisin 10-speed automatic transmission combines lessons from the Aisin 8-speed and ZF 8HP into one of the more compelling, elegant designs. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
Cover for post Mercedes 725.0 9G-Tronic Automatic Transmission Deep Dive (NAG3 / W9A 700)
01 Jan 2026
Mercedes 725.0 9G-Tronic Automatic Transmission Deep Dive (NAG3 / W9A 700)
Mercedes 725.0 9G-Tronic, aka NAG3, is one of the most advanced automatic transmissions for passenger vehicles today. Let us analyze the advantages and trade-offs of the 9G-Tronic and delve into how its gear train works.
Cover for post ZF 8HP 8-Speed Automatic Transmission Deep Dive
30 Dec 2025
ZF 8HP 8-Speed Automatic Transmission Deep Dive
The ZF 8HP represents both a major evolution in the philosophy of the 6HP and a considerable revolution in gear train design. Today, let us analyze its advantages and trade-offs and delve into how its gear train works.
Cover for post Understanding the ZF 6HP 6-Speed Automatic Transmission
29 Dec 2025
Understanding the ZF 6HP 6-Speed Automatic Transmission
The ZF 6HP can be considered the world’s first modern automatic transmission, influencing all future models with a series of conscious trade-offs. Today, I analyze the advantages and trade-offs of the ZF 6HP and delve into how its gear train works.
Cover for post Understanding the Mercedes 722.9 7G-Tronic Automatic Transmission (W7A 700 / NAG2)
27 Dec 2025
Understanding the Mercedes 722.9 7G-Tronic Automatic Transmission (W7A 700 / NAG2)
The Mercedes 722.9 7G-Tronic was the world’s first 7-speed automatic transmission for passenger cars. Today, let us analyze the advantages and trade-offs of its design and delve into how its gear train works.
Cover for post Understanding the Toyota–Aisin 8-Speed Automatic Transmission (AA80E / TL-80SN)
25 Dec 2025
Understanding the Toyota–Aisin 8-Speed Automatic Transmission (AA80E / TL-80SN)
The Toyota–Aisin AA80E remains the most robust and reliable 8- and higher-speed transmission. Today, I analyze the advantages and trade-offs of its design and delve into how its gear train works.
Cover for post Commenting on the Seven Best-Looking Chinese EVs
20 Dec 2025
Commenting on the Seven Best-Looking Chinese EVs
In this article, I comment on the seven best-looking Chinese EVs on the market.
Cover for post Controlled Torque Converter Clutch Slip and the Slow-Mo Suicide of Modern Automatic Transmissions
18 Dec 2025
Controlled Torque Converter Clutch Slip and the Slow-Mo Suicide of Modern Automatic Transmissions
In no small part thanks to how controlled TCC slip is managed, modern automatic transmissions can have noticeably different drive feel and reliability.