The engine is an inexpensive light-weight powerful unit that provides
entry level for the first time turbine flyer as well as allowing the
more experienced jet modeller to experiment with twin engine
installations and to fly simple one-piece models that easily fit in a
standard car. WREN state that the kit is simple to make over a 2-3 day
period. Complete engines are available from Simon Peckham who has been
approved by Wren to assemble engines for those who do not wish to
assemble their own.
Wren also specialises in the design and production of a wide range of
small turbine wheels and cast Nozzle Guide vanes for small jet engines.
The range includes 55mm dia and 66 mm dia axial flow turbine wheels and
cast guide vanes and shortly will include a 45mm dia turbine wheel and
guide vane. Wren are the first company to make and supply gas generator
turbines and power turbine wheels for small shaft power units. The range
will continue to expand and the company welcomes enquiries for wheels of
other sizes. Wren only supplies wheels that have been fully inspected,
X-rayed and certified. All wheels meet the requirements of AMS-STD-2175
grade "B". Wren is now one of the largest producers of small
turbine wheels in the world.
The designer, Mike Murphy, has been one of a handful of people in the
world to successfully design and build small turboshaft engines, with
his famous turbo prop that has been run on countless demonstrations at
model flying events and at the International Model Engineer Exhibition
in London. Mike designed and made his successful turbine powered
helicopter , one of the first to fly in the world. It flew before a
large crowd at the 99 World Jet Masters.
The company is committed to supplying the homebuilder with quality
parts and plans so that he can make the engine from scratch if so
There is now a kit of the MW54 available at £699 in both thrust and
gas generator versions - most parts in the kit are machined, but there
are holes that need drilling and tapping.
WREN are also developing an even smaller gas turbine engine, the
MW60. This unit has a main body of only 105mm in length, 195mm with
inlet and exhaust cones fitted.