THE AERO ENGINE COLLECTION AT THE BRISTOL BRANCH

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I
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THE AERO ENGINE COLLECTIONATTHE BRISTOL
BRANCH
THE ERA OF THE PISTON ENGINE
BRISTOL - MANUFACTURED POPPET AND SLEEVE
VALVE ENGINES WORLD WAR 1 TO 1965 (
REVISED JAN. 2010 )
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AERO ENGINE MANUFACTURE IN BRISTOL

• BRAZIL STRAKER Co. OF FISHPONDS, BRISTOL (WW
  1)
• COSMOS ENGINEERING Co. (1918 RE-ORGANISATION)
• BOUGHT BY BRISTOL AEROPLANE Co. IN 1920 TO
  BECOME
• THE AERO-ENGINE DEPARTMENT
• BECAME ENGINE DIVISION OF BRISTOL AEROPLANE
  Co. JULY 1944
• BECAME BRISTOL AERO-ENGINES Ltd JANUARY 1956
• MERGED WITH ARMSTRONG SIDDELEY IN APRIL
  1959 TO
• BECOME BRISTOL SIDDELEY ENGINES
• BECAME PART OF ROLLS - ROYCE IN 1966

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BRASIL STRAKER AND COSMOS ENGINES
CURTIS OX-5
RECONSTRUCTED 1914 / 15 R-R HAWK 1
2 MANUFACTURE (334)
WW 1 R-R FALCON Mk. 2 3 MANUFACTURE
(1775) WW 1 RENAULT 80 hp V8
MANUFACTURE (610) WW 1
MERCURY (2 ROW) IN-HOUSE DESIGN
1917 JUPITER IN-HOUSE DESIGN
1918 LUCIFER IN-HOUSE DESIGN
1919
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CURTIS OX- 5(RECONSTRUCTED BY BRAZIL STRAKER IN
1914)
WATER - COOLED 900 V UPRIGHT 8 CYLINDER
T.O. POWER 102 hp BORE
4.0 in STROKE
5.0 in SWEPT VOLUME
550 cu in COMPRESSION RATIO 5.4
1 NORMAL ASPIRATION DRIVE - DIRECT REDESIGN
LATE 1914 TESTED
JAN. 1915 No. RECONSTRUCTED
300 LIFE INCREASE - 5hr to 100/200 hr
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ROLLS - ROYCE FALCON-- BUILT BY BRAZIL
STRAKER IN WW 1 -
T.O. POWER 265 hp (Mk 2)
275 hp (Mk 3) BORE
4.0 in STROKE
5.75 in SWEPT VOLUME 867 cu
in COMPRESSION RATIO (Mk 1) 5.1 1
(Mk 3) 5.3 1 NATURALLY
ASPIRATED DRIVE - GEARED 0.589
1

• 12 CYLINDER
• IN LINE
• V UPRIGHT
• WATER COOLED

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BRISTOL - BUILT FALCONS - APPLICATIONS
No. BUILT AT BRISTOL Mk 2 - 400 Mk 3 -
1375 MAIN USE BRISTOL F2B FIGHTER
A MAJORITY OF FALCON ENGINES WERE BUILT AT
BRISTOL
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THE FEDDEN / BUTLER DESIGN PARTNERSHIP
THE CODE - LETTERS FB ALWAYS PRECEDED
BRAZIL STRAKER PART No.s AND THIS
CONTINUED UNDER THE BRISTOL AEROPLANE Co.
OWNERSHIP
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BRAZIL STRAKER (COSMOS) MERCURY
T. O. POWER 347 hp BORE
4.375 in STROKE
5.8125 in SWEPT VOLUME
1223 sq in COMPRESSION RATIO 5.0
1 NATURALLY ASPIRATED DRIVE -
DIRECT DESIGN
1917 FIRST RUN JAN
1918 FIRST FLIGHT 4TH SEPT 1918 3
BUILT - 200 ORDERED (ORDER CANCELLED
11TH NOV 1918)
14 CYLINDER DOUBLE ROW AIR COOLED RADIAL
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INSTALLATIONS / APPLICATIONSBRAZIL STRAKER
(COSMOS) MERCURY
1918 - EXPERIMENTAL INSTALLATION IN BRISTOL
21A (SCOUT F1) 1919 - TESTED BY P. W.
S. BULMAN AT FARNBOROUGH AND SET
UNOFFICIAL RECORDS THAT STOOD FOR 7
YEARS 5.4 min to 10,000 ft 16.25 min to
20,000 ft
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THE COSMOS JUPITER 1
9 CYLINDER SINGLE ROW AIR COOLED RADIAL
T.O. POWER 368 hp BORE
5.75 in STROKE
7.5 in SWEPT VOLUME 1753 cu
in COMPRESSION RATIO 5.0 1 NATURALLY
ASPIRATED DRIVE DIRECT DESIGN
APRIL 1918 1ST RUN 29 OCT.
1918 FIRST FLIGHT 25 MAY 1919 No BUILT
5 (BEFORE 1920)
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COSMOS JUPITER 1 - APPLICATIONS
AN EARLY INSTALLATION IN THE BRISTOL
BADGER (1919)
SOPWITH SCHNEIDER OF 1919 CAPABLE OF 165 mph