Popular articles

Probably every transmission repair specialist was keen on LEGO constructions or at least enjoyed making some minor things with their hands. Here's the game taken to a new level of creativity!

Modern auto industry is full of sophisticated drivetrain technologies which are supposed to make your driving experience even more pleasant and trouble-free. Despite a great abundance of sophisticated technical solutions, it is highly likely that very few people know a transmission solution operating like a manual CVT.

Over recent years engineers developed a lot of gear shifting solutions for different car brands, which may seem a bit unusual for oldtime drivers. In this article we will review the most peculiar gear stick technologies and provide video materials related to these technologies.

Only few people know about transmission concepts which were popular 70-90 years ago. For men of today, these gearboxes may seem very unusual and weird, but even now some gearboxes that date back to those years are quite competitive in comparison with modern transmissions.

Nowadays Extroid CVTs are commonly known as “toroidal” due to the fact that the working surface of driving and driven discs in this transmission has the form of a torus. Extroid CVT is not a V-belt transmission, but a friction drive CVT.

UK's Hydra-Test Launch New Concept for Quality Valve Body Rebuilding


UK's Hydra-Test Launch New Concept for Quality Valve Body Rebuilding

In December 2017 the international Automatic Transmission repair market was excited by the announcement that Cottingham Engineering LTD, owners of the Hydra-Test brand, launched their new concept named Hydra-Tested. Its major idea is to give promotion and wider attention to the users of the Hydra-Test Valve Body testing equipment.


Cottingham Engineering Ltd do not offer valve body rebuilding services in order to avoid competing with its own customers but are known as producers of quality Valve Body testing equipment. This fact triggers enquiries and website traffic from people across Europe and neighboring regions who wish to have their valve bodies efficiently rebuilt. The Cottingham Engineering Team decided to redirect these people straight to Valve Body specialists using Hydra-Test equipment and performing a quality repair to the complex transmission element. The enquirers receive addresses and contact details of reliable valve body repair service providers in their corresponding area.


As of now, this project exists as an open database of some Hydra-Test equipment users published at the contacts sections of the Hydra-Test official website. However, Cottingham Engineering LTD are conducting a survey to have full info on the companies using their machines – so people looking for quality Automatic Transmission services will be sure that their needs will be professionally covered.


Another aim of concept Hydra-Tested is closer cooperation with valve body specialists wishing to improve software, exchange master data, test scenarios and the overall experience. By receiving constant feedback from users worldwide the Cottingham Engineering development team are able to improve their current HTC-K software. Probably, this is the most advanced data acquisition system for Valve Body testing machines available on the modern market. Hydra-Tested is targeted at making the system even more user-friendly and advanced in order to truly comply to the motto of Hydra-Test products: “The Ultimate in Valve Body Testing”, - and make the users of this equipment “Ultimate Professionals in Valve Body Testing”.

Popular articles

Probably every transmission repair specialist was keen on LEGO constructions or at least enjoyed making some minor things with their hands. Here's the game taken to a new level of creativity!

Modern auto industry is full of sophisticated drivetrain technologies which are supposed to make your driving experience even more pleasant and trouble-free. Despite a great abundance of sophisticated technical solutions, it is highly likely that very few people know a transmission solution operating like a manual CVT.

Over recent years engineers developed a lot of gear shifting solutions for different car brands, which may seem a bit unusual for oldtime drivers. In this article we will review the most peculiar gear stick technologies and provide video materials related to these technologies.

Only few people know about transmission concepts which were popular 70-90 years ago. For men of today, these gearboxes may seem very unusual and weird, but even now some gearboxes that date back to those years are quite competitive in comparison with modern transmissions.

Nowadays Extroid CVTs are commonly known as “toroidal” due to the fact that the working surface of driving and driven discs in this transmission has the form of a torus. Extroid CVT is not a V-belt transmission, but a friction drive CVT.