Technical Specifications Of Gear Box
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TECHNICAL SPECIFICATIONS - BULLET - 350 CC
Gear Box Engine Single Cylinder Four stroke with over-head valve Cubic Capacity Stroke Bore-Nominal Actual Compression Ratio Compression Pressure Engine Output Torque
346 cc 90 mm 70 mm 69.875 mm / 2.751 in. 7.25 : 1 110 +- 5 Psi (recommended) 18 BHP @ 5625 rpm 2.74 kgm @ 2875 rpm
Piston and Piston Rings Ring Clearance in (Dimensions for new grooves components) Plain (2) .001/.003" Scraper .002/.004" Ring end gap in bore .015/.020" Maximum Ring Gap 0.030" Permissible Gudgeon pin 0.7498/0.7500" diameter Crank Pin Diameter 1.24875 / 1.249 " Connecting rod 0.7505/.7507" small end diameter
Crankshaft Driving side ball bearing Roller bearing Timing side roller bearing Cam Lift Valve lift
25 x 62 x 17 mm (6305) 25 x 62 x 17 mm (NU 305 or N305) 25 x 52 x 15 mm (NU 205 or NU 205 R) 0.3125 in 0.3125 in
Valve timings with 0.012" clearance Exhaust opens Exhaust Closes Inlet Opens Inlet Closes
75 o BTDC 35 o ATDC 30 o BTDC 60 o BTDC
Overall Gear Ratios Main shaft ball bearings
5.32,7.26,9.80 & 14.80 Small - 63.03
Large - 62.05 Final drive sprocket 16 teeth Rear drive chain 5/8" pitch chain Brake drum sprocket38 teeth
Carburetor
Mikcarb-VM-24
Main jet Pilot jet
90 25
Contact Breaker (Coil ignition) 0.14/0.16" (0.35 to 0.4 mm) Timing before TDC 1/32" (0.8mm) 14mm diameter Spark plug B7HS (NGK) or equivalent Spark plug gap 0.46 to 0.50 mm Condenser 0.18 to 0.25 MFD (Capacitor) Points gap
Suspension Front Stroke Rear
Telescopic hydraulic damping 155 mm Pivoted fork with shock absorbers
Wheel Rim Type WM 2 - 19 Tyre Size
3.25 x 19 (Front)
Wheel bearings 3.50 x 19 (Rear) (Front & Rear)
Brakes Front Rear
17 x 40 x 12 mm (6203 or 6203 ZZ) Mechanical internally expanding shoe type 178 mm x 38 mm Twin leading shoes 153 mm x 25 mm Single leading shoe
TECHNICAL SPECIFICATIONS: DIMENSIONS & WEIGHTS: Item Description
Unit
350 cc
500 cc
1.
Length
mm
2120
2120
2.
Width
mm
750
750
3.
Height
mm
1080
1080
4.
Wheel Base
mm
1372
1372
5.
Ground Clearance
mm
140
140
6.
Dry Weight
Kg.
163
168
7.
Maximum Pay Load
Kg.
160
160
ENGINE AND ENGINE SYSTEMS Item Description
Unit
350 cc
500 cc
Four Stroke, Spark Ignition
Four Stroke, Spark Ignition
1.
Engine Type
2.
Bore X Stroke
mm
70 X 90
84 X 90
3.
Swept Volume
cc
346
499
4.
Compression Ratio
7.2 : 1
6.5 : 1
5.
Max BHP @ rpm
18 @ 5625
22 @ 5400
6.
Specific H.P.
52.02
44.08
7.
Max Torque @ rpm
27.5 @ 2875
35.9 @ 3000
8.
Low Idle rpm
900 - 1000
900 - 1000
9.
Starting
Kick Start
Kick Start
Cotton Gauze
Cotton Gauze
10. Air Filter Element 11. Carburettor
Nm
MICARB VM-24
VM-28
12. Main Jet
90
110
13. Pilot Jet
25
25
14. Starting Jet
40
40
15. Jet Block
O-8
16. Needle 17.
Needle Lock Groove from Top
4DH7-3
4DH7-4
III
III
18. Intake System
Over Head Valve Over Head Valve
19. Lubrication
Dry sump pressure feed
20. Cooling
Natural Air Flow Natural Air Flow
Dry sump pressure feed
PERFORMANCE Item Description
Unit
350 cc
500 cc
1
Cruising Speed
KPH
40 - 50
40 - 50
2
Max. Speed
KPH
100
125
3
Mileage - UNRC
KPL
35 - 40
30 - 35
TRANSMISSION Item Description
Unit
350 cc
500 cc
1.
Primary Drive
3/8" Duplex Chain 3/8" Duplex Chain & sprocket & Sprocket
2.
Primary Reduction
2.24 : 1
2.24 : 1
3.
Clutch
TYPE
Wet Multiple
Wet Multiple
4.
Gear Box
TYPE
Constant Mesh 4 Speed
Constant Mesh 4 Speed
5.
Gear Ratio
1Gear 2Gear 3Gear 4Gear
2.778 : 1 1.842 : 1 1. 364 : 1 1:1
2.778 : 1 1. 842 : 1 1.364 : 1 1:1
6.
Secondary Drive
Sprocket & Chain
Sprocket & Chain
7.
Secondary Ratio
2.375 : 1
2.255 : 1
8.
Wheel/FD.Spkt Teeth
38/16
38/17
9.
Drive Chain Links
94
94
10.
Over all Ratio Max.
14.779 : 1
13.907 : 1
5.32 : 1
5.006 : 1
11. Over all Ratio Min.
CHASIS
Item Description
Unit
Front
1. suspension 2.
Rear Suspension
Break Drum : 3. Front Rear 4.
Tyres : Front Tyres : Rear
Tyre Pressure: Fr.Single 5. (DUAL) Rr.Single (DUAL)
mm mm
350 cc
500 cc
Telescopic Oil Damped
Telescopic Oil Damped
Swing Arm with Hydraulic Shock Absorber
Swing Arm with Hydraulic Shock Absorber
178 153
178 153
inches 3.25 X 19 inches 3.25 X 19
3.25 X 19 3.5 X 19
PSI PSI
18 ( 20 ) 28 ( 30 )
18 ( 20 ) 28 ( 30 )
In Built
In Built
6. Steering Lock
ELECTRICITY & IGNITION Item Description
Unit
350 cc
500 cc
1.
Generation
Alternator 6V - 80 W
Alternator 12 V - 80 W
2.
Ignition
Contact breaker
Contact Breaker
3.
Ignition Timing
0.8mm
0.8mm
4.
Spark Plug
HW 145 Z1
HW 225 Z2
5.
Battery
V x AH 6 x 11
12 x 5
6.
Head Lamp
VxW
6 x 30/24
12 x 36/36
7.
Pilot Lamp
VxW
6x3
12 x 2
8.
Tail Lamp
VxW
6x6
12 x 6
9.
Brake Lamp
VxW
6 x 18
12 x 18
10. Turn Signal Lights
VxW
6 x 10
12 x 10
11. Speedometer lights
VxW
6 x 1.2
12 x 2
6v 3A DC
12v 3A DC
12. Horn
BTDC
OIL & PETROL Item Dscription 1.
Engine Oil
Unit 350 cc 20W - 50
500 cc 20W - 50
2.
Engine Oil Capacity
3.
2.25
2.25
Front Fork Oil
10W/30
10W/30
4.
Front Fork Oil Capacity ml
200
200
5.
Clutch Oil
10W/30
10W/30
6.
Clutch Oil Capacity
420
420
7.
Gear Box Oil
8.
Gear Box Oil Capacity
gms 700
700
9.
Petrol Tank Capacity
ltr.
14.5
14.5
ltr.
1.25
1.25
10. Reserve
ltr.
ml
'00' Grade Grease '00' Grade Grease
Gear Box Engine Single Cylinder Four stroke with over-head valve Cubic Capacity Stroke Bore-Nominal Actual Compression Ratio Compression Pressure Engine Output Torque
346 cc 90 mm 70 mm 69.875 mm / 2.751 in. 7.25 : 1 110 +- 5 Psi (recommended) 18 BHP @ 5625 rpm 2.74 kgm @ 2875 rpm
Piston and Piston Rings Ring Clearance in (Dimensions for new grooves components) Plain (2) .001/.003" Scraper .002/.004" Ring end gap in bore .015/.020" Maximum Ring Gap 0.030" Permissible Gudgeon pin 0.7498/0.7500" diameter Crank Pin Diameter 1.24875 / 1.249 " Connecting rod 0.7505/.7507" small end diameter
Crankshaft Driving side ball bearing Roller bearing Timing side roller bearing Cam Lift Valve lift
25 x 62 x 17 mm (6305) 25 x 62 x 17 mm (NU 305 or N305) 25 x 52 x 15 mm (NU 205 or NU 205 R) 0.3125 in 0.3125 in
Valve timings with 0.012" clearance Exhaust opens Exhaust Closes Inlet Opens Inlet Closes
75 o BTDC 35 o ATDC 30 o BTDC 60 o BTDC
Overall Gear Ratios Main shaft ball bearings
5.32,7.26,9.80 & 14.80 Small - 63.03
Large - 62.05 Final drive sprocket 16 teeth Rear drive chain 5/8" pitch chain Brake drum sprocket38 teeth
Carburetor
Mikcarb-VM-24
Main jet Pilot jet
90 25
Contact Breaker (Coil ignition) 0.14/0.16" (0.35 to 0.4 mm) Timing before TDC 1/32" (0.8mm) 14mm diameter Spark plug B7HS (NGK) or equivalent Spark plug gap 0.46 to 0.50 mm Condenser 0.18 to 0.25 MFD (Capacitor) Points gap
Suspension Front Stroke Rear
Telescopic hydraulic damping 155 mm Pivoted fork with shock absorbers
Wheel Rim Type WM 2 - 19 Tyre Size
3.25 x 19 (Front)
Wheel bearings 3.50 x 19 (Rear) (Front & Rear)
Brakes Front Rear
17 x 40 x 12 mm (6203 or 6203 ZZ) Mechanical internally expanding shoe type 178 mm x 38 mm Twin leading shoes 153 mm x 25 mm Single leading shoe
TECHNICAL SPECIFICATIONS: DIMENSIONS & WEIGHTS: Item Description
Unit
350 cc
500 cc
1.
Length
mm
2120
2120
2.
Width
mm
750
750
3.
Height
mm
1080
1080
4.
Wheel Base
mm
1372
1372
5.
Ground Clearance
mm
140
140
6.
Dry Weight
Kg.
163
168
7.
Maximum Pay Load
Kg.
160
160
ENGINE AND ENGINE SYSTEMS Item Description
Unit
350 cc
500 cc
Four Stroke, Spark Ignition
Four Stroke, Spark Ignition
1.
Engine Type
2.
Bore X Stroke
mm
70 X 90
84 X 90
3.
Swept Volume
cc
346
499
4.
Compression Ratio
7.2 : 1
6.5 : 1
5.
Max BHP @ rpm
18 @ 5625
22 @ 5400
6.
Specific H.P.
52.02
44.08
7.
Max Torque @ rpm
27.5 @ 2875
35.9 @ 3000
8.
Low Idle rpm
900 - 1000
900 - 1000
9.
Starting
Kick Start
Kick Start
Cotton Gauze
Cotton Gauze
10. Air Filter Element 11. Carburettor
Nm
MICARB VM-24
VM-28
12. Main Jet
90
110
13. Pilot Jet
25
25
14. Starting Jet
40
40
15. Jet Block
O-8
16. Needle 17.
Needle Lock Groove from Top
4DH7-3
4DH7-4
III
III
18. Intake System
Over Head Valve Over Head Valve
19. Lubrication
Dry sump pressure feed
20. Cooling
Natural Air Flow Natural Air Flow
Dry sump pressure feed
PERFORMANCE Item Description
Unit
350 cc
500 cc
1
Cruising Speed
KPH
40 - 50
40 - 50
2
Max. Speed
KPH
100
125
3
Mileage - UNRC
KPL
35 - 40
30 - 35
TRANSMISSION Item Description
Unit
350 cc
500 cc
1.
Primary Drive
3/8" Duplex Chain 3/8" Duplex Chain & sprocket & Sprocket
2.
Primary Reduction
2.24 : 1
2.24 : 1
3.
Clutch
TYPE
Wet Multiple
Wet Multiple
4.
Gear Box
TYPE
Constant Mesh 4 Speed
Constant Mesh 4 Speed
5.
Gear Ratio
1Gear 2Gear 3Gear 4Gear
2.778 : 1 1.842 : 1 1. 364 : 1 1:1
2.778 : 1 1. 842 : 1 1.364 : 1 1:1
6.
Secondary Drive
Sprocket & Chain
Sprocket & Chain
7.
Secondary Ratio
2.375 : 1
2.255 : 1
8.
Wheel/FD.Spkt Teeth
38/16
38/17
9.
Drive Chain Links
94
94
10.
Over all Ratio Max.
14.779 : 1
13.907 : 1
5.32 : 1
5.006 : 1
11. Over all Ratio Min.
CHASIS
Item Description
Unit
Front
1. suspension 2.
Rear Suspension
Break Drum : 3. Front Rear 4.
Tyres : Front Tyres : Rear
Tyre Pressure: Fr.Single 5. (DUAL) Rr.Single (DUAL)
mm mm
350 cc
500 cc
Telescopic Oil Damped
Telescopic Oil Damped
Swing Arm with Hydraulic Shock Absorber
Swing Arm with Hydraulic Shock Absorber
178 153
178 153
inches 3.25 X 19 inches 3.25 X 19
3.25 X 19 3.5 X 19
PSI PSI
18 ( 20 ) 28 ( 30 )
18 ( 20 ) 28 ( 30 )
In Built
In Built
6. Steering Lock
ELECTRICITY & IGNITION Item Description
Unit
350 cc
500 cc
1.
Generation
Alternator 6V - 80 W
Alternator 12 V - 80 W
2.
Ignition
Contact breaker
Contact Breaker
3.
Ignition Timing
0.8mm
0.8mm
4.
Spark Plug
HW 145 Z1
HW 225 Z2
5.
Battery
V x AH 6 x 11
12 x 5
6.
Head Lamp
VxW
6 x 30/24
12 x 36/36
7.
Pilot Lamp
VxW
6x3
12 x 2
8.
Tail Lamp
VxW
6x6
12 x 6
9.
Brake Lamp
VxW
6 x 18
12 x 18
10. Turn Signal Lights
VxW
6 x 10
12 x 10
11. Speedometer lights
VxW
6 x 1.2
12 x 2
6v 3A DC
12v 3A DC
12. Horn
BTDC
OIL & PETROL Item Dscription 1.
Engine Oil
Unit 350 cc 20W - 50
500 cc 20W - 50
2.
Engine Oil Capacity
3.
2.25
2.25
Front Fork Oil
10W/30
10W/30
4.
Front Fork Oil Capacity ml
200
200
5.
Clutch Oil
10W/30
10W/30
6.
Clutch Oil Capacity
420
420
7.
Gear Box Oil
8.
Gear Box Oil Capacity
gms 700
700
9.
Petrol Tank Capacity
ltr.
14.5
14.5
ltr.
1.25
1.25
10. Reserve
ltr.
ml
'00' Grade Grease '00' Grade Grease
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