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Old 04-13-2013, 12:24 PM
Join Date: Apr 2011
Location: Melbourne, AUSTRALIA
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Default RE: Wren Turbo prop

Hello everyone,
Thank you for the information so far.
The Wren 54 turbo prop is no longer in production. This will rule it out.
I have however got some information from the Wren web site and manual.
I guess my main worry will be vertical performance.
Being an aerobatic plane this is very important to me and I do like my 3D flying, so being able to sit it on its tail is necessary.

Max Power Output:7.5HP / 5.6Kw @ 195,000 rpm
Weight:1750gms / 3Lbs 13oz
Overall size centre section:326mm x 86mm / 12.8" x 3.4"
Mounting:Hole dia 85mm / 3.4", 6 x M3 screws
Ancillaries weight (inc battery):340g / 12oz
Propeller rpm range:1100 to 9000 rpm
Propeller size range:17 x 12 ~ 28 x 10 (2 or 3 blade)
Recommended Setup:6400 rpm on Metz 22x13 3-blade prop
Fuel Consumption @ max power:176ml per minute / 5.8oz per minute

The Wren 44 TurboProp is the worlds smallest commercial 2-shaft turbo-prop engine. It is
designed for use in miniature aircraft applications in place of an I/C engine. It is generally suited
to aircraft up to 25kg (55lb) in all up weight and will replace I/C engines of around 80cc (4.8cu