Supercool_Bill
New member
Hey guys I am starting a /5 model changes master list. It may grow into a /5, /6 master list but for now my focus is on the bike I am restoring which is a early /5 750cc. (1971 R75/5)
Here is what I have so far, I would appreciate some help filling in the blanks, fixing the errors, etc.
BMW R50, 60, 75/5 CHANGES 1969-1975
OIL FILTER-
1969 TO MID 1970 OIL FILTER COVER HAD COUNTERSINK SCREWS
MID 1970 TO ____ OIL FILTER COVER IS FLAT WITH REGULAR HEX HEAD SCREWS AND LOCK WASHERS
OIL PUMP-
OIL PUMP COVER HAD COUNTER SINK PHILIPS HEAD SCREWS FROM 1969 TO ______THEN CHANGED TO HEX HEAD BOLTS (NO LOCK WASHERS?)
OIL PUMP/CAM SHAFT INNER ROTOR KEYWAY 2.5 MM X 3.7 MM FROM 1969 TO 1973 THEN CHANGED TO 3 MM X 3.7 MM IN 1973.
TACHOMETER DRIVE-
1969 TO MID 1971? NO WASHER BETWEEN TACH DRIVE GEAR AND THE OIL SEAL
REFLECTORS ON SIGNAL LIGHTS- 1970-1971?
REFLECTORS ON HEADLIGHT MOUNT EARS-
FRONT SIGNAL MOUNTS PLATED STEEL 1969 TO ? 19? ON CHROMED STEEL
REAR SIGNAL MOUNT PLATED STEEL 1969 TO ? . ? TO ? CHROMED STEEL OR BLACK?
SINGLE LARGE SPEEDOMETER AND METAL HEADLIGHT BUCKET 1969- 19?
DENFELD SEAT CHANGES-
1969 TO SEPTEMBER 1971- SEAT FOAM MATERIAL GOT STIFF WHEN IT GOT OLDER, SEAT COVER HAD NO LINES IN THE BUTT AREA, THERE WAS A GRAB STRAP OVER THE SEAT, THERE WERE TWO INDIVIDUAL CHROME SIDE GRAB HANDLES.
SEPTEMBER 1971 TO ____? SEAT FOAM MATERIAL IMPROVED, SEAT COVER HAS LINES ON SEAT AREA, NON STRAP OVER SEAT, SINGLE PIECE WRAP AROUND CHROME GRAB HANDLE.
19? TO 19__? PLACARD ON THE BACK OF THE SEAT “R75/5” ETC.
CLUTCH PRESSURE PLATE CHANGED FROM FLAT PLATE WITH CYLINDRICAL SPACERS TO ONE PIECE DESIGN WITH BUILT IN SPACER
*NOTE- R50/5 AND R60/5 CLUTCH SPRING PLATES SMALLER THAN ON THE R75/5.
CHOKE CABLES-
1969 TO LATE 1971 R75 CABLES WITH STRANDED, THE CHOKE MECHANISMS HAD RETURN SPRINGS IN THEM. Late 1971 ON CABLES ARE SOLID WITH NO RETURN SPRINGS IN THE CHOKE MECHANISMS
ENGINE PLACARD ON STARTER COVER-
1969 TO 1972 CHROME WITH NO BLACK PAINT. 1973 CHROME WITH BLACK WRITING
OIL GALLEY PLUGS SCREWDRIVER SLOT 1969 CHANGED TO ALLEN HEAD FOR 1971
GAS TANK-
FUEL CAP OPENED BACKWARDS 1969
LOCKING FUEL CAP AVAILABLE ___?
LOCKING FUEL CAP STANDARD ___?
EVERBEST CORK FUEL PETCOCKS 1969 TO 1971
GERMA FUEL PET COCKS
KARCOMA FUEL PETCOCKS
TIRES-
FRONT TIRE OEM-
REAR TIRE OEM-
HEADLIGHT BULB-
SWINGARM LENGTH-
SHORT LENGTH 1969 TO 1973?
NEUTRAL LIGHT-
GREEN COLOR 1969 TO 1971?
AMBER COLOR 1972 TO 19__? WHEN THEY CHANGED TO DIFFERENT SPEEDOMETER SET UP
ELECTRICAL FUSES-
1969- ____NO FUSES, 19__ ON FUSES FOR ____
REAR SHOCKS-
BLACK SPRINGS 1969 TO _____
CHROME SPRINGS 19___ TO _____
KICKSTAND-
AUTO-RETRACT FEATURE- NON-AUTO RETRACT 1969 TO LATE 1971. AUTO RETRACT 1972 TO ____.
CARB INTAKE TUBES COLOR-
1969- YELLOWISH COLOR? 1971- SILVER THAT CHANGED TO YELLOWISH OVER TIME. 1972 ON- BLACK.
FLYWHEEL TIMING COVER PLUG- WHITE 1969-__? BLACK FROM ____ ON. NEW OEM ARE BLACK
PARTS CHANGED WHEN REPLACING OLD PARTS WITH NEW OEM PARTS (OLD PART NLA)-
CAM CHAIN TENSIONER-
NEW DESIGN WITH THICKER, SOFTER RUBBER PAD
CRANKCASE DISK VENT REPLACED WITH REED VALVE STYLE
Here is what I have so far, I would appreciate some help filling in the blanks, fixing the errors, etc.
BMW R50, 60, 75/5 CHANGES 1969-1975
OIL FILTER-
1969 TO MID 1970 OIL FILTER COVER HAD COUNTERSINK SCREWS
MID 1970 TO ____ OIL FILTER COVER IS FLAT WITH REGULAR HEX HEAD SCREWS AND LOCK WASHERS
OIL PUMP-
OIL PUMP COVER HAD COUNTER SINK PHILIPS HEAD SCREWS FROM 1969 TO ______THEN CHANGED TO HEX HEAD BOLTS (NO LOCK WASHERS?)
OIL PUMP/CAM SHAFT INNER ROTOR KEYWAY 2.5 MM X 3.7 MM FROM 1969 TO 1973 THEN CHANGED TO 3 MM X 3.7 MM IN 1973.
TACHOMETER DRIVE-
1969 TO MID 1971? NO WASHER BETWEEN TACH DRIVE GEAR AND THE OIL SEAL
REFLECTORS ON SIGNAL LIGHTS- 1970-1971?
REFLECTORS ON HEADLIGHT MOUNT EARS-
FRONT SIGNAL MOUNTS PLATED STEEL 1969 TO ? 19? ON CHROMED STEEL
REAR SIGNAL MOUNT PLATED STEEL 1969 TO ? . ? TO ? CHROMED STEEL OR BLACK?
SINGLE LARGE SPEEDOMETER AND METAL HEADLIGHT BUCKET 1969- 19?
DENFELD SEAT CHANGES-
1969 TO SEPTEMBER 1971- SEAT FOAM MATERIAL GOT STIFF WHEN IT GOT OLDER, SEAT COVER HAD NO LINES IN THE BUTT AREA, THERE WAS A GRAB STRAP OVER THE SEAT, THERE WERE TWO INDIVIDUAL CHROME SIDE GRAB HANDLES.
SEPTEMBER 1971 TO ____? SEAT FOAM MATERIAL IMPROVED, SEAT COVER HAS LINES ON SEAT AREA, NON STRAP OVER SEAT, SINGLE PIECE WRAP AROUND CHROME GRAB HANDLE.
19? TO 19__? PLACARD ON THE BACK OF THE SEAT “R75/5” ETC.
CLUTCH PRESSURE PLATE CHANGED FROM FLAT PLATE WITH CYLINDRICAL SPACERS TO ONE PIECE DESIGN WITH BUILT IN SPACER
*NOTE- R50/5 AND R60/5 CLUTCH SPRING PLATES SMALLER THAN ON THE R75/5.
CHOKE CABLES-
1969 TO LATE 1971 R75 CABLES WITH STRANDED, THE CHOKE MECHANISMS HAD RETURN SPRINGS IN THEM. Late 1971 ON CABLES ARE SOLID WITH NO RETURN SPRINGS IN THE CHOKE MECHANISMS
ENGINE PLACARD ON STARTER COVER-
1969 TO 1972 CHROME WITH NO BLACK PAINT. 1973 CHROME WITH BLACK WRITING
OIL GALLEY PLUGS SCREWDRIVER SLOT 1969 CHANGED TO ALLEN HEAD FOR 1971
GAS TANK-
FUEL CAP OPENED BACKWARDS 1969
LOCKING FUEL CAP AVAILABLE ___?
LOCKING FUEL CAP STANDARD ___?
EVERBEST CORK FUEL PETCOCKS 1969 TO 1971
GERMA FUEL PET COCKS
KARCOMA FUEL PETCOCKS
TIRES-
FRONT TIRE OEM-
REAR TIRE OEM-
HEADLIGHT BULB-
SWINGARM LENGTH-
SHORT LENGTH 1969 TO 1973?
NEUTRAL LIGHT-
GREEN COLOR 1969 TO 1971?
AMBER COLOR 1972 TO 19__? WHEN THEY CHANGED TO DIFFERENT SPEEDOMETER SET UP
ELECTRICAL FUSES-
1969- ____NO FUSES, 19__ ON FUSES FOR ____
REAR SHOCKS-
BLACK SPRINGS 1969 TO _____
CHROME SPRINGS 19___ TO _____
KICKSTAND-
AUTO-RETRACT FEATURE- NON-AUTO RETRACT 1969 TO LATE 1971. AUTO RETRACT 1972 TO ____.
CARB INTAKE TUBES COLOR-
1969- YELLOWISH COLOR? 1971- SILVER THAT CHANGED TO YELLOWISH OVER TIME. 1972 ON- BLACK.
FLYWHEEL TIMING COVER PLUG- WHITE 1969-__? BLACK FROM ____ ON. NEW OEM ARE BLACK
PARTS CHANGED WHEN REPLACING OLD PARTS WITH NEW OEM PARTS (OLD PART NLA)-
CAM CHAIN TENSIONER-
NEW DESIGN WITH THICKER, SOFTER RUBBER PAD
CRANKCASE DISK VENT REPLACED WITH REED VALVE STYLE
