Milan Stojanovic has done quite a few restorations of classic BMWs in the past including R25, R25/2, R25/3, R27, R50/5 and a few Steib sidecars. All of these were brought back to factory prescribed condition, today we are taking a look at his first custom BMW R75/5 build, a classic transformation of 70s. Milan Stojanovic gives us an insight into the processes involved with his build:
"My father, Zoran Stojanovic, started 15 years ago restoration of BMW R25/2, since then bike building became a hobby for three of us (him, my brother and me). This motorcycle is built on the base of 1972 BMW R75/5, basically in 2004 we bought a bike that you can see at one of the attached picture, took everything apart and sat for a drawing board. From that moment it took us almost three years to bring it to this condition.
To start with the frame, we kept the original one from BMW with the minor adjustments for the rear shock absorbers. The original 750ccm engine is also rebuilt completely and while being disassembled we polished every square mm of its housing. We upgraded fork and closed it with highly polished stainless steel cover that we designed and built. Rear swing arm was built almost from the scratch due to the shock absorbers angle change. Then we come to the bodywork, fenders and tank, they are also unique, to build them we had to make wooden molds first and then to shape metal. Engine and fender guards, exhaust pipes, mufflers and all decoration parts are absolutely stainless steel hand made. Wheels are BMW original, but polished to high gloss. Also driver seat is completely handmade, starting from the seat carrier to the black and white leather finish.
The favorite part was the moment we started it and made the loop around the block. The hardest part for this custom project was to adjust rear swing arm and shock absorber as well as making the molds for tank and fenders. The finished custom BMW R75/5 has the classic spirit of 70s, a fantastic build from the Stojanovic family.
BMW R75/5 Specification list
Engine Capacity (Displacement):745 ccm (45.46 cubic inches), Engine Type: 2 cylinders, Bore x Stroke: Ø82.0 mm x 70.6 mm (Ø3.23 inches x 2.78 inches), Bore/Stroke Ratio: 1.16, Stroke: 4, Valves per Cylinder: 2, Timing System: OHV, Cooling System: Air, Gearbox:5 speed, Front Brakes:Drum, Rear Brakes: Drum, Front Tire: 3.25-19, Rear Tire: 4.00-18, Max Power: 50.00 HP (36.5 kW) at 6200 RPM, Power/Weight Ratio: 0.22 Hp/Kg, Top Speed: 175 km/h (109mph), Acceleration (dart, speedup) time: 0-100 km/h 6.1 seconds, 0-60 mph 5.8 seconds.