The Pine Commission

 

Technical Specification

Year 1975

Model R75/6

Displacement 1000cc (61 cu in)

Power 70hp (45kW)

Torque 56 ft⋅lbf (76 N⋅m) @ 5,000 rpm

Transmission 4 Speed

Forks /5 Sliders with R100RS Internals

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 17 front • 110/90 17 rear

Rims SUN 2.50x17 front • 2.50x17 rear

 

Starting with an original R75/6 manufactured in 1975, 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 original /5 fork sliders with internals from a 1980 R100RS mounted via a /5 triple tree, whilst rear suspension is equipped with a pair of fully adjustable Black line Öhlins shocks with external reservoirs. The exhaust is a full custom stainless system hand made by MAD exhaust. The result is a classic cafe racer, scrambler hybrid making good reliable power.

The original engine has been rebuilt with new European specification dome top pistons and a compression ratio of 9.5:1. The heads have been refurbished. A hi-output ignition system powers a dual coil mounted under the gas tank. The Mikuni carburetors have been jetted and tuned to suit. The factory airbox has been retained and is original equipment to the R100RS. The starter was upgraded to a lightweight hi-torque unit to take less draw the from lithium battery, housed safely under the gas tank in our custom battery tray. The factory charge system was replaced with a modern upgraded unit

A /5 headlight bucket is mounted to a pair of /5 forks using factory fork ears. Brakes consist of drum brake front and rear, outfitted with new brake shoes, springs and cables. The headlight has been modified to LED for brighter light and less draw on the battery.


The Speedometer has been rebuilt and customized, including orange pointers. The gauge incorporates a speedo, a tach and indicator lights. Hand controls are new OEM units, modified to suit the custom wiring harness.

 

A factory front hub is laced to an 17” SUN rim cerakoted black with stainless steel spokes. The rear utilizes the factory rear hub, converted to modern sealed bearings and laced to a 17” SUN rim. The gas tank, front fender and headlight bucket finished in Alpine White over Schwartz Glasurit paint and wears custom Brass roundels.

 
 
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The Zirkle Commission

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The Lindenfelser Commission