ENGI
N
E
4
www.betamotor.com
TECHNICAL FEATURES OF ENGINE
Tipo
Monocilindrico a 4tempi raffreddato a liquido con albero
bilanciatore e avviamento elettrico
Bore x stroke RR 350
88x57,4
Bore x stroke RR 400
95x56,2
Bore x stroke RR 450
95 x 63,4
Bore x stroke RR 498
100 x 63,4
Displacement [cm³] RR 350
349,1
Displacement [cm³] RR 400
398
Displacement [cm³] RR 450
449,4
Displacement [cm³] RR 498
497,9
Compression ratio RR 400-450-498
13,3:1
12,4:1
11,95
12,0:1
Valve gear
4 valves
TRANSMISSION
RR 350
RR 400
RR 450
RR 498
Primary transmission
28/76
28/76
31/73
31/73
1st gear ratio
12/31
12/31
12/31
12/31
2nd gear ratio
15/28
15/28
15/28
15/28
3rd gear ratio
19/28
19/28
19/28
19/28
4th gear ratio
20/24
20/24
20/24
20/24
5th gear ratio
27/27
27/27
27/27
27/27
6th gear ratio
28/24
28/24
28/24
28/24
SECONDARY TRANSMISSION
CHAIN
CARBURETTOR
RR350
RR400
RR450
RR498
Carburettor type
Keihin FCR-MX39
Keihin FCR-MX 39
Keihin FCR-MX 39
Keihin FCR-MX 39
Carburettor-setting
number
006121308 000
006.12.100.8.0
006.12.000.8.0
006.12.200.8.0
Main jet
170
175
175
180
Jet needle
NCVQ
OBDTS
OBDVS
OBDVS
Slow jet
40
45
45
45
Main air jet
x
200
200
200
Idling air jet
100
100
100
100
Needle position
3°
5°
4°
4°
Mixture control screw open
1+1/2
1+1/2
1+1/2
2
Intake jet
40
50
40
40
Содержание Enduro RR 350 2013
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