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Road Test
 ROYAL ENFIELD THUNDERBIRD
  Introduction
  Styling
  Engine & Transmission
  Chassis & Suspension
  Performance
  Fuel Efficiency
  Overall
  Technical Specifications
Source Click here for Overdrive Subsription June 2002
 TECHNICAL Specification

Specifications

At a Glance...
OVERALL RATING :
0-60 kmph : 7.7 sec
0-400 m : 22.3 sec
Top speed: 107.6 kmph
Ride : Good
Handling : Fair
Brake Rating : Very Good
Price as Tested: Rs 71,590 (Disc brake)*, Rs. 67,590 (Drum brake)
Price as tested includes 160kmph speedometer, 8000rpm tachometer and fuel guage.

* OTR Bangalore
 

Engine

Service Data
Type 4-stroke, air cooled single cylinder
Valvetrain OHV, 2 valves/cyl
Displacement 346cc
Bore x Stroke 70.0 x 90.0mm
Comp Ratio 8.5+-0.3:1
Carburettor Mikuni CV carb
Max Power 18bhp@5500rpm
Max Torque 26.97Nm@5000rpm
Power to Weight 103 bhp/ton
Ignition Electronic CDI
Idle Speed 900 - 1000rpm
Air Filteration Paper
Oil Filteration Felt
Lubrication Forced
Oil Pump type Gear pump
Fuel Unleaded petrol
Starting Kickstart
First Inspection 500 km
Service Interval 3000 kms
Engine Oil Grade SAE 20W/40 API-SF
Engine Oil Capacity 2.25 litre
Oil Filter Change 6000 kms
Oil Change interval 6000 kms
Spark Plug Mico W5DC
Spark Plug gap 0.46-0.5mm
Cyl Compression 8.5:1
Valve Clearances (cold)
Intake 0.08mm
Exhaust 0.10mm
Tyre Pressure
Front (Solo/Pillion) 1.27/1.41kgf/cm2
Rear (Solo/Pillion) 2.0/2.11kgf/cm2
Warranty 12000kms or 12months whichever is earlier
       
General Data Transmission
Kerb Weight 175 kg
Gross Weight 350 kg
Max payload 175 kg
Wheelbase 1370 mm
Length 2120 mm
Width 750 mm
Height NA
Saddle height 740 mm
Ground Clearance 140 mm
Min. Turning Radius 2.21m
Fuel Tank Capacity 14.45 litres
Reserve 1.25 litres
Clutch Wet multiplate
Primary Drive Duplex chain & sprocket
Final Drive Chain
Primary reduction 2.24
Final reduction 2.375
Gearbox-5 speed 5-Speed constant mesh
Gear Ratio kmph/1000rpm
1st 3.063 7.45
2nd 2.013 11.34
3rd 1.522 14.99
4th 1.212 18.83
5th 1 20.75
  
Electricals Chassis
Battery 12V 5Ah
Alternator 12V - 108W
Head lamp 12V 40/45W
Tail lamp 12V 5W
Stop lamp 12V 21W
Turn signal lamp 12V 10W
Fuse 15 Amps
Type Tubular welded
Suspension
Front Telescopic hydraulic damped
Rear Swingarm with hydraulic shock absorber.
Brakes
Front Mechanical internal expanding 7" twin lead drum/ Hydraulic disc brake (optional)
Rear Mechanical internal expanding 6" twin lead drum
Wheels and tyres
Rim (F/R) 2/1.85 x19
Tyre (F/R) 3.25x18", 4/6PR
3.5x19" 4/6PR
Make (F/R) Srichakra, Dunlop, MRF
      
Instrumentation Test Conditions
160kmph speedometer, tachometer, fuel guage
Terrain All tarmac
Temperature 36º C
Distance 250km
     
Performance
Acceleration Braking
Time To Speed Seconds Meters
0-20kmph 1.4 4.1
0-30kmph 2.5 11.5
0-40kmph 3.9 24.9
0-50kmph 5.4 43.9
0-60kmph 7.7 79.8
0-70kmph 10.4 128.4
0-80kmph 15.1 228.7
0-90kmph 22.3 393.4
Minimum Stopping Distance
From 60kmph 21.3m/2.5s*
Control Good
Brake Feel Good
Overall Brake Rating Good
* Above figures achieved with disc brake
Time to Distance

Ratings

Engine
Clutch/Gearbox
Handling
Braking
Rider comfort
Pillion comfort
Value for money
0-400m 22.3s @ 91.0 kmph
Roll - on
kmph 3rd 4th 5th
30-70 7.5 11.8 24.4
       
Fuel Economy Top Speed
IDC NA*
Overall 34kmpl
Best 40kmpl
Worst 28kmpl
Range 491.3km
*Manufacturer claimed
Max Speed 107.6kmph*
Speedo read 112kmph
*Achieved in 5th gear using Datron Correvit EEP-3 laser test gear.
          
Tester's Notes: Styling is revised and there are fresh tones inculcated. These try to break the monotony of the Bullet and succeed in making a good job of it  The disc on the front brake has got to come in as standard fare, no compromises there  Acceleration, top speed and other Performance tests are'nt too hot, so is the exhaust drone  Superb seat and backrest iron out the rough patches  Left sided gearshift finally makes it to production and proves to be a worthy addition  Fuel Efficiency too is a let down inspite of the CV carb.
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