Engine - Beta RR 390 Manual De Uso

1

ENGiNE

Type ................................................. Single cylinder, 4-stroke, liquid-cooled
Bore x stroke RR 390 ........................................................... 88 x 63,4 mm
Bore x stroke RR 430 ........................................................... 95 x 60,8 mm
Bore x stroke RR 480 ......................................................... 100 x 60,8 mm
Displacement (cm
Displacement (cm
Displacement (cm
Compression ratio RR 390 .............................................................. 12,5:1
Compression ratio RR 430 .............................................................. 11,9:1
Compression ratio RR 480 .............................................................. 11,9:1
Fuel system ............................................................................... carburetor
Carburetor
Version
Carburator type
Main jet
Idling jet
Starter jet
Needle
Needle position (from above)
Main air jet
Idling air jet
Mixture control screw
(from fully closed)
Intake jet
Stop
* - This change makes the vehicle not complying with the Highway Code. Use should be limited
to private circuits and routes closed to traffic.
GB
) RR 390 ...........................................................386 cm
3
) RR 430 ...........................................................430 cm
3
) RR 480 ...........................................................478 cm
3
RR 390
Homolog. Competition* Homolog. Competition* Homolog. Competition*
Keihin FCR-MX 39
162
42
85
OBDVS
1°
200
100
1
50
YES
with countershaft and electric starting
RR 430
Keihin FCR-MX 39
170 162 170
40 42 45
85 85 85
NCVS OBDVS NCVS
4° 2° 3°
200 200 200
100 100 100
1 + 1/2 1 1 + 1/2 1 + 1/2 1 + 1/2
40 40 40
NO YES NO
22
RR 480
Keihin FCR-MX 39
162 180
42 45
85 85
OBDVR OBDVR
3° 3°
200 200
100 100
40 40
YES NO
3
3
3