The Lindenfelser Commission

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Technical Specification

Year 1969

Model R75/5

Displacement 1000cc (61 cu in)

Power 60hp (45kW)

Torque 52 ft⋅lbf (70 N⋅m) @ 5,000 rpm

Transmission 4 Speed

Forks USD Showa

Alternator Silent Hektik 12 V • 400 Watts

Spark Plugs Bosch WR6DC

Fuel Tank 6.3 US gal (24 l; 5.3 imp gal)

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

Rims Excel 2.50x18 front • 2.50x18 rear

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Starting with an early BMW R75/5 manufactured in 1969, 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 equipped with a pair of Öhlins shocks with external reservoirs. The exhaust is a full stainless system finished with a pair of quiet-core mufflers from Cone Engineering. The result is a classic cafe racer with modern handling characteristics, excellent brakes and ample power.

The original engine has been rebuilt with displacement increased to 1000cc and a compression ratio of 9.0:1 and TwinSpark Ignition. The heads have been refurbished and twin-plugged. A hi-output ignition system powers a pair of dual coils mounted under the gas 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 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 Showa USD forks. Brakes consist of a pair of Brembo GP4 radial calipers with a Nicke finish, operated by an under-tank master cylinder. The headlight has been modified to LED for brighter light and less draw on the battery.


The Speedometer has been rebuilt to resemble that of the gauges found in a 1969 Porsche, including black bezel, orange pointers and silver buttons. The gauge incorporates a speedo, 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 Porsche Olive Glasurit paint and wears custom CNC roundels. Pinstripes are hand painted.

 
 
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The Pine Commission

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The Gordy Commission