Below is a list of the changes noted by Mr. Paul Grace in the UK. I'm sure a lot of them
aren't the same for us but some of the major engineering changes
could be the same.
- Mike
~~~~~~~~~~~~~~~~~~
1980
Ignition coil mounting moved to the fixed section of the rear
mudguard ? from inside the toolbox.
1981
Fulcrum lever added to the centre stand ? makes the centre stand
easier to use. Oil pump covers changed to PDC and reinforcement with
ribbing ? to increase their strength. Rear wheel changed to quickly
detachable type with the sprocket permanently fixed to the swinging
arm early models had a small rear hub to which the sprocket
was attached on one side and the speedo drive attached on the other
side.
Speedo hub drive shifted to the front wheel ? to allow for the new QD
rear wheel.
New rear shock absorbers with adjustable spring rating ?previously
non?adjustable.
Bing carburettor introduced ? a German designed carburettor giving
improved fuel efficiency replaces the Villiers carburettor.
1982
Crankcases are paired and in?line bored ? timing side and drive side
crankcases are bolted together then the bearing holes are made in one
operation. This avoids offset bearing bores and eliminates main
bearings failure.
Petrol tank filler hole enlarged and a larger round riller cap
introduced.
Front fork with integral oil seals ? replaces earlier screw type
seals.
Pressed steel handlebar levers with curved ends.
New combined dipswitch horn unit ? plastic horn button replaces metal
button, which sometimes shorted in wet conditions.
Deep rolled front mudguard ? replaces flat?sided pressed mudguard.
Bike lifting handle fitted to drive side.
Winged petrol tank badge has words ENFIELD previously ENFIELD INDIA.
Individual ignition keys introduced for the ignition unit on the
timing side toolbox ? previously a one?keyfits?all unit was used.
Black plastic 'ENFIELD' cover for the contact breaker unit ?
previously a painted metal cover.
1984
4 plate rectifier ? replaces 8 plate rectifier.
Finned, chrome?plated tappet chest cover ? replaces plain alloy cover.
Front brake and clutch levers chrome plated previously black.
1985
Trafficators (indicators) introduced ? these work with the bike's 6
Volt electrics.
1986
12 Volts Electrics introduced ? previously 6 Volts.
1987
Mikarb carburettor introduced
carburettor.
replaces Bing
Long silencer fitted to new export 500ce Bullets now also fitted to
350cc export bikes.
1989
Low riderlhigh pillion dual seat introduced on?export models ?
domestic models retain the early flat dual seat.
1990
Oil pump cover screws changed to metric previously Whitworth.
1992
Horn location changed to front facing ? from side facing.
5?ampere battery introduced and battery top cover changed to FRP on
50Occ Bullets ? replaces 5.5 ampere battery.
1993
Folding kickstart crank introduced ? previously a fixed type used.
Rubber guides introduced on front mudguard to route the speedo and
front brake cables ? to avoid cables fouling the mudguard.
High beam and turn signal indicators relocated inside the speedometer
previously positioned in the casquette facia.
Cylinder head valve guide and valve seat housing now inline bored.
1994
Twin leading?shoe front brake introduced on domestic Bullets
1994
Twin Leading?shoe front brake introduced on domestic Bullets
Ignition key moved to casquette ? from right hand side toolbox
Headlamp switch moved to left handlebar electric's cluster ? from
casquette.
1995
Lockable toolboxes fitted ? coke?bottle type fasteners formerly
employed.
Front fork triple?lip oil seal introduced ? previously a double?lip
seal was used.
Rectifier and Regulator become two separate units previously a one?
piece unit
Neoprene seal fitted to big end oil pump worm nut replaces cork oil
seal.
Three?piece clutch rod introduced ? formerly a 2?piece rod was used.
Clutch centre and plates redesigned ? NB: you must use old shape
centre with old shape plates and new centre with new?shaped plates.
A mounting strip is incorporated into the frame for the
rectifier/regulator/flasher unit ? positioned underneath the dual
seat.
Common key introduced for the ignition switch, toolbox locks, petrol
tank and steering lock.
Valve guide material changed to cast iron for improved life ? from
phosphor bronze.
1996
Rocker bearings with double pins and ground stud locators
introduced ? replaces early free?floating bearings.
Pulse Air Valve emissions control system introduced on all export and
domestic 500cc Bullets ? except for US spec models.
Silencer bracket becomes separate ? previously welded to the silencer.
Electrics; changed to 12 volts AC/DC in 350cc Deluxe models ? from 12
Volts DC, for improved reliability and brighter headlamps.
1997
Warranty on domestic Bullets brought in line with export machines: 1
year or 10,000 kin ? previously 6 months and 8,000 km.
Larger 28 notch rear chain adjusters introduced previously 23 notches.
Royal Enfield motifs introduced on export model petrol tanks ?
replace Enfield logo.
1998
Air filter moved to right?hand side toolbox on export models ? from
air filter box.
Crankcase breather diverted into a breather oil collection box and
recycled into crankcase on export models? previously sprayed oil onto
rear chain.
Silencer baffling increased ? to meet future noise emissions
legislation.
Push pull type choke ? knob introduced on 35Occ carburettors ? for
ease of operation.
7 inch twin lead brakes introduced on 35Occ domestic models ?
replaces 7 single leading shoe brake.
Electrical connections changed to coupler connections ? from bullet
connectors for better connectivity.
Bonded brake shoes introduced on the rear brake previously riveted
brake shoes.
Shielded ball bearings fitted in front and rear wheels ? replaces
traditional unshielded ball bearings for improved life.
One pair of additional friction and metal clutch plates fitted to the
35Occ clutch ? for better transmission of power.
1999
Round trafricators introduced ? these were previously rectangular.
Electrics changed to 12 volts ACIDC on all models from 12 Volts DC,
for improved reliability and brighter headlamps.
Royal Enfield logo on all rubber parts. ie, foot pegs, kick?starter
rubber, gear lever rubber etc ? from Enfield.
2000
Push rod adjusters changed to metric ? previously Whitworth.
Oil seal fitted to timing?side of 350cc crankcase where the timing
shaft comes out ? to reduce wet?sumping.
Crankcase and chai
ncase fasteners become metric previously Whitworth.
Foot peg rubbers design changed to ring groove pattern
2001
Rolled front and rear mudguards are fitted to domestic 350 Bullets ?
replaces pressed guards
'Duck bill' type centrally mounted side?stand introduced on domestic
models ? replaces rear mounted side?stand.
Final drive sprocket nut fitted with a neoprene seal to prevent
grease escaping from the gearbox replaces felt seal.
Long silencer introduced for domestic models
replaces short silencer.
Air filter moved to toolbox on domestic models from air filter box.
Crankcase breather diverted into a breather oil collection box and
recycled into crankcase on domestic models ? previously sprayed oil
onto rear chain.
New type integral steering lock introduced.
2002
Chromed cover for contact breaker points introduced ? replaces black
plastic cover.
Electronic Ignition (CDI) introduced on domestic Bullet 350cc
motorcycles.
Hex headed metric sized bolts used to fasten the engine to the frame
at the front ? replaces studs and nuts.
Oil pressure relief valve fitted in the timing shaft and increased
volume oil pumps fitted to 350cc Bullets ? uprates the 350cc bike to
500ce Bullet specifications.
Pillion footrests become foldable on 35Occ domest
Engine and clutch fastening studs and nuts changed to metric ?from
Whitworth.
O?ring rear chain introduced ? for increased chain and sprocket life.ic
Bullets ?
previously fixed.
Royal Enfield motifs used on domestic model petrol tanks ?replace
Enfield logo.
Topic: History; When did Enfield become Royal? (Read 18663 times)