Post by racket on Oct 16, 2017 16:24:08 GMT -5
Hi Dan
Theres a different flametube fitted to the 2S/150A APU according to my www.amazon.co.uk/Pistons-Blades-Turbine-Developments-Historical/dp/1872922236 ( a good read) , its an annular one made by Lucas and the fuel delivery is rudimentry , which is probably OK as long as the engine is run straight up to full rpm , often APUs require the starter to be kept engaged a lot long than just "idle" sort of rpm, it might pay to have a chat to some of the guys who've actually run these engines as theres very little info available, even though the basic gas producer was used for a couple of other APUs including the one with the redux gearbox used on the Avro 748 aircraft to drive the Dart engine's ancillories on the ground .
A wastegate would be a good idea if its possible to fit one as the engine might require a fairly high idle rpm ...............lotsa unknowns when modifying an engine and is one reason I've never gone down the commercial engine route , I recon if I make it then I can modify it :-)
Please keep us up to date on what you find out
Cheers
John
Theres a different flametube fitted to the 2S/150A APU according to my www.amazon.co.uk/Pistons-Blades-Turbine-Developments-Historical/dp/1872922236 ( a good read) , its an annular one made by Lucas and the fuel delivery is rudimentry , which is probably OK as long as the engine is run straight up to full rpm , often APUs require the starter to be kept engaged a lot long than just "idle" sort of rpm, it might pay to have a chat to some of the guys who've actually run these engines as theres very little info available, even though the basic gas producer was used for a couple of other APUs including the one with the redux gearbox used on the Avro 748 aircraft to drive the Dart engine's ancillories on the ground .
A wastegate would be a good idea if its possible to fit one as the engine might require a fairly high idle rpm ...............lotsa unknowns when modifying an engine and is one reason I've never gone down the commercial engine route , I recon if I make it then I can modify it :-)
Please keep us up to date on what you find out
Cheers
John
