Suzuki RG500

The RG 500 Gamma is a motorcycle Suzuki from the 1980s.

It is a so-called super athlete. The technique has been adopted almost 1:1 by the then racing engine. The water-cooled four-cylinder two-stroke engine ( square four arrangement ) with 4 rotary valves plate and cassette gearbox has a displacement of 498 cm ³. It delivers 70 kW / 95 hp at 9500 min -1. The torque is 71.3 Nm and the compression ratio of 7.0:1. This 500 reaches a top speed of 228 RG km / h The curb weight is 154 kg.


A special feature of the RG 500 is that they are the only 2-stroke mass-produced car to this day, the drive is derived directly from a Grand Prix engine the premier class. The Yamaha RD 500 LC competitors V4 (65 kW / 88 hp ) and Honda NS 400 R ( 53 kW / 72 PS) were inferior terms of performance and not leaning in terms of engine design directly to the GP machines. In consequence of this peculiarity, the RG -500 drive enjoyed especially among amateur riders in the national 500cc racing classes very popular. Much cheaper to get than a production racer engine, could be out to get more power from tuned RG -500 engines from the series counterparts of Yamaha and Honda.


Common defects occurred mainly during transmission. The RG 500 inherited the transmission of the high degree of identical Suzuki RG 400 This was for the Japanese market with the - designed popular 400cc class - due to the restrictive driving license regulations. However, the RG 400 had only 43 kW / 59 HP, making the transmission for the nominally 72 kW / 95 PS RG 500 proved to be too weak. Erupting shift dogs often attracted a fraction of the motor housing by itself. Suzuki responded with two transmission overhauls - the second was not published until 1993, four years after the last year. Another weak point is the Pertinaxbeschichtung the rotary valve housing. Here is repeatedly reported that replaces the Pertinax tread - can lead - what goes into the inlet opening to a threading of the rotary slider plate - and thus to engine damage.