Tundra Green R75 RSWB

 

Technical Specification

Year 1977

Model R100RS

Displacement 1000cc (61 cu in)

Power 70hp (51kW)

Torque 56 ft⋅lbf (76 N⋅m) @ 5,500 rpm

Transmission 5 Speed

Forks USD Showa

Alternator Silent Hektik 12 V • 400 Watts

Spark Plugs Bosch WR6DC

Fuel Tank 4.76 US gal (22 l; 4 imp gal)

Tires Bridgestone Spitfire 110/90 18 front• 120/90 18 rear

Rims Sun 2.50x18 front • 2.50x18 rear

 

Starting with a 1977 R100RS, we repaired and braced the frame along with removing the factory tabs before refinishing in a gloss black powder coat. We fitted our custom subframe with a flush mount brake light and turn signals. The front end consists of a pair of Showa USD forks mounted via a custom triple tree, whilst rear suspension is taken care of with a pair of Öhlins shocks with external reservoirs. The exhaust is a full stainless system including quiet-core mufflers from Cone Engineering. The result is a classic cafe racer with modern handling characteristics, excellent brakes and ample power.

The original 1000cc engine has been rebuilt to factory specification. The big valve heads have been been worked over and now include valve seals. An electronic ignition system powers a single dual coil mounted under the tank. The Mikuni carburetors have been jetted and tuned to suit. The factory airbox was drilled in the style of a 1977 R100RS. The starter was upgraded to a lightweight hi-torque unit to compliment the lithium battery that is housed safely under the gas tank. The factory charge system was replaced with a modern upgraded unit

A /5 headlight bucket is mounted to a pair of Showa USD forks. Brakes consist of a pair of Brembo radial calipers powered by an under-tank master cylinder. The headlight has been modified to LED for brighter light and less draw on the battery.


A new Motometer Speedometer incorporates a tach and indicator lights. Hand controls are new OEM units, modified to suit the custom wiring harness. All original hardware was zinc plated.

 

A custom front hub is laced to an 18” Excel rim with stainless steel spokes. The rear utilizes the factory rear hub, laced to an 18” Excel rim. The gas tank, front fender and headlight bucket finished in Tundra Green Glasurit paint and wears enamel roundels. Pinstripes are hand painted.

 
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The Karthik Commission