A Little History/Specs

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A Little History/Specs

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A Little History/Specs

Here's what I know...

The Suzuki GSX-R50 is quite a rare bike. It's also known as the Suzuki RB50 and affectionately called GAG in Japan. I think it was first produced back in 1986 and discontinued after 1987. Production numbers are unkown to me but I believe that they were fairly limited compared to it's competition at that time, the Yamaha YSR50 and Honda NSR50. It's main difference from the competition is that it was powered by a 4-stroke 50cc engine. Though the competition could beat it in most performance aspects, it is easy to ride and maintain which gives it the appeal to it's owners. Several manufacturers did produce go-fast products for this bike. Sadly though, most of these parts are no longer in production. Current owners have to get by with custom-made parts or adapting parts from other bikes. It is not uncommon to see owners swapping-in parts from the NSRs and YSRs. For more details, checkout the specifications.

Dimensions and Dry Mass

Overall Length-

1,540mm (60.6in)

Overall Width-

610mm (24.0in)

Overall Height-

870mm (34.3in)

Wheelbase-

1,080mm (42.5in)

Ground Clearance-

115mm ( 4.5in)

Dry Mass-

63kg (139ibs)

Seating capacity-

1 person

Engine

Type-

Four-stroke, air-cooled, OHC

Number of cylinders-

Bore-

39.0mm (1.535in)

Stroke-

41.8mm (1.646in)

Piston displacement-

49.9cu. cm (3.0cu. in)

Compression ratio-

10.3:1

Horsepower-

5.2ps/7000rpm

Torque-

0.57kg-m/6000rpm

Carburetion-

Mikuni VM13SH, single

Air cleaner-

Polyurethane foam element

Starter system-

Kick

Lubrication system-

Wet sump

Transmission

Clutch-

Wet, multi-plate type

Transmission type-

4-speed constant mesh

Gearshift pattern-

1-down, 3-up

Primary reduction-

3.842 (73/19)

Final reduction-

2.642 (37/14)

Gear ratios:

1st-3.400 (34/10)

2nd-1.933 (29/15)

3rd-1.315 (25/19)

4th-1.095 (23/21)

Drive chain-

Takasago RK420 or Daido D.I.D.420,

100 links

Electrica

Ignition type-

Suzuki "PEI"

Ignition timing-

27deg. +/- 2deg. B.T.D.C. at 6,000 r/min.

Spark plug-

NGK C6HA or Nippon Denso U20FS-L

Generator-

A.C. generator

Headlight-

6V 25W/25W

Tail/Brake light-

6V 3W/10W

Chassis

Front suspension-

Telescopic, coil spring, oil-damped

Rear suspension-

Swingarm, oil damped

Steering angle-

30deg. (right & left)

Caster-

26deg.

Trail-

80mm (3.1in)

Turning radius-

2.5m (8.0ft)

Front brake-

Disc brake, hydraulically operated

Rear brake-

Internal expanding

Front tire size-

3.50-10-2PR

Rear tire size-

3.50-10-2PR

Capacities

Fuel tank including reserve-

7.0L (1.8/1.5 US/Imp gal)

Fuel tank reserve-

1.6L (1.7/1.4 US/Imp qt)

Engine oil-

800ml (0.85/0.70 US/Ip qt)

Front fork oil-

94ml (3.18/3.31 US/Imp oz)