Riga Typology

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On this page you find the different types of Riga racebikes listed:
Special thanks to Artis Eglitis.

SZ 50
1963 without fairing
1964 with fairing
3-5 made
19inch wheels
Vairas Sh-50 engine modified. 6,5hp ,5 speed


SZ 1
1964
1 made
simplified design for planned production.


Riga 5S
1966
1 or 2 made
engine unknown


Riga 6S
1968
supposed 2 made
Serpuchov ShK-55 8 hp,4 speed
16 inch wheels
backbone type frame


Riga 7S
1968
supposed 2 made
Serpuchov ShK-55 engine
19 inch wheels
duplex frame


Riga 9S
1969
10 made
Serpuchov ShK-55 engine 9,5hp
16 inch wheels
central tube frame (Egli type)
hydraulic fork and shocks
bodyparts design by Gunnars Gludins


Riga 11S
1970
2 made
Serpuchov SM-51K. 10,5hp , 6 speed
carburetter Dell Orto ,or K36
17 inch wheels
2 made for racing team (Smertjev and Borissenko)


Riga 15S GP
(shortly named 13S)
1972
2 made for team
bodywork design by Gludins
Serpuchov ShK-54 ,6 speed rotary inlet valve ,14hp
carburetter Dell Orto or K36
Riga electronic ignition with special drive on the engine
18 inch wheels


Riga 15S
1975-76
2 batches of 15
Serpuchov ShK-54 engine ,12hp
Electronic iginiton by Riga ,batterypowered
18 inch wheels


Riga 17S GP
1976
2-4 made for team
Serpuchov engine ,watercooled ,16hp
carburetter Amal
ignition Kröber


Riga 17S
1978
small number made
bodywork like 15S
Serpuchov engine ShK-50-78


Riga 19S GP
1979
number unknown
new fairing by Gludins
Serpuchov engine
project somehow unfinished


Riga 21S
1982-83
(1?)
Serpuchov engine
casted magnesium wheels ,disc brakes
experimental


Riga 23S
1983
3 made
factory 125cc racebike ,pilot and builder R. Aizstrauts
one with steel frame ,two with aluminium deltabox type
2 cylinder rotary inlet engine
bodywork by Gludins or by J.Karklins
wheels by Vihur
forks made from aicraft gun barrels