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Aero Engine Data Sheets

Mechanical Data tables

Italian Aero Engines: Page 129 of 140

N/A = Not Applicable --- NA = Info Not available

MakerFiat A24RFiat A30RAFiat A54Fiat A70Fiat A74RCFiat A80RCIsotta Fraschini 750R
ArrangementV 60V 60RadialRadialRadialRadialW Layout
No of Cyls121277141818
Bore/Stroke5.51" x 6.89"5.31" x 5.51"4.13" X 4.72"4.53" x 4.53"4.53" x 4.53"5.51" x 6.50"5.12" x 6.69"
Displacement2002 cu ins1713.6 cu ins493.5 cu ins510.0 cu ins1906.3 cu ins2788.9 cu ins4073.1 cu ins
Comp Ratio5.70:18.0:15.50:15.75:16.50:16.50:15.70:1
bmep Cruise115778412014513570
Blower ratioN/AN/AN/A10.228.789.37N/A
Cyl MaterialSteelSteelSteelSteelSteelSteelSteel
Valves per cyl2 Inl 2 Exh2 Inl 2 Exh1 Inl 1 Exh1 Inl 1 Exh1 Inl 1 Exh1 Inl 1 Exh2 Inl 2 Exh
HP max - not Take-Off7005501402058401000920
@ RPM2000275021002200240021001900
@ AltitudeSea Level9842 ftSea LevelSea Level12467 ft13451 ftSea Level
HP Take-OffNot Given600Not GivenNot GivenNot Given1000Not Given
HP Cruise525415100155Not GivenNot Given550
@ RPM1810250019102000Not GivenNot Given1530
Fuel Octane82847482878787
Prop DriveGearedGearedDirectDirectGearedGearedGeared
Dry Weight1212.5 lbs1058.2 lbs330.7 lbs368.2 lbs1245.6 lbs1598.4 lbs1543.2 lbs
lb/Cruise HP2.312.553.312.371.481.602.81
Carb(s)2 X Own3 X Own1 X Stromberg1 X Stromberg1 X Stromberg1 X Own1 X Own
IgnitionMarelli Mag(2)Marelli Mag(2)Marelli Mag(2)Marelli Mag(2)Marelli Mag(2)Marelli Mag(2)Marelli Mag(2)
Starting MethodOwn, Comp AirOwn, Comp AirOwn, Comp AirMarelli, Comp AirOwn, Comp AirOwn, Comp Air Own, Comp Air
Bed centres25.39"21.81"21.81"21.81"21.81"21.81"Not Given

Let me know if any of the above does not read true, or if you have information that does not agree. Wherever possible, I will update these pages on a regular basis as data comes in.

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