WREN birdie in Latvia

WREN birdie in Latvia


Wren Turbines was formed in 1999 by Mike Murphy, John Wright, Roger Parish and Terry Lee. They had a shared interest in miniature turbines and had met through the Gas Turbine Builders Association.

The name was chosen because the Wren is commonly regarded as the smallest British bird and the company intended to specialise in the smallest engines.

The first Wren engine was the MW 54, designed by Mike with help from John. The designation comes from their initials (Murphy Wright) and the size of the compressor in millimetres. This was the first miniature engine to use a compressor size of less than 66mm, making it much smaller and lighter than all the previous engines. It was available first as a set of plans and castings for homebuilders and then in January 2001 the MW 54 kit (Mk 1) was launched. This was followed by the Mk 2 (5.4 kg thrust) in January 2002, and the Mk 3 (6.4 kg thrust) in June 2004. The kits are very popular and are frequently bought by first-time jet fliers. The kit is fully balanced, easy to assemble, and there are over a thousand of the engines being flown all over the world. The MW54 is also available as a ready-built engine.

This was followed in 2002 by the Wren Turboprop, the first miniature two-stage engine. Like the MW 54 which is used as the first stage of this engine, it was available first as a homebuild plan, with detailed instructions for making the gearbox and a set of machined castings for the second stage. The following year the engine became available as a ready-built engine. It has undergone considerable development since and is now flown by some of the world's top show fliers, including Thomas Gleisner (Airworld Raven) Quique Sommenzini (YAK 54) and Ali Maschinchy (Spitfire).

The development of the two-stage engine made it possible for people to build helicopters with Wren Helicopter engines. At first, gearboxes and conversion kits for helicopters were only available through third parties, and a number of customers designed and built their own gearboxes. The Wren helicopter gearbox completed the engine in Autumn 2004 and made it possible for customers to buy everything needed for a turbine helicopter, directly from Wren.

The MW44, the smallest Wren engine, appeared in April 2003. This was another "first" for Wren, an engine with a 44mm compressor, about the size of a coke can, yet with 3kg of thrust. At first it was only available with a hand starter and then later with onboard start. There was much interest in an Autostart version but it proved very difficult to get this tiny engine to autostart reliably. In the summer of 2005 the MW44 was temporarily withdrawn from the market and more development work was done, resulting in the new MW44 Gold, an engine with Autostart, faster response and over 4kg thrust.

Wren is a company dedicated to the design and manufacture of miniature jet engines - we don't do anything else. We employ several people in our factory at Manvers, Rotherham, UK. All the design and tooling for the turbine castings is done in-house and the turbine wheels are cast in specialist foundries to full aerospace certification. We are proud of the quality of our engines and the service and support we give to our customers.

Unlimited RC is happy and pleased to offer Latvian RC pilots manufacturer of high-quality products!
It would be useful for saying '' We are not so rich to buy cheap goods'! :)) The joke, of course, but we look forward to a long-term and fruitful cooperation with the WREN TURBINES and whereas the first turbine order has done, we plan to provide early summer Initial comments on WREN turbines directly from the Latvian RC airfields!
Interested parties who wish to learn more, welcome to look WREN TURBINES website