I got into 70’s BMW motorcycles about 13 years ago. But they have all been ‘street’ bikes. I have to admit, my eyes really opened up at the races last weekend. I definitely took in some inspiration and ideas for my next build (from every brand motorcycle).
This bike belongs to Mike Jefferies. The stats are below. The photos speak for themselves. I just wish i had him take the bike out to an open area for some clean photos. (If only i wasn’t so hungover that day…)
Rims are 19-2.15 front and 18-2.50 rear Akronts
Frame is a 1970 R75/5, forks and brake are R60/6(17mm axle), R65 swingarm.
Engine is 10.5:1 750cc. 1981 R100 bottom end, top end is 1976 R75, fully balanced. Stock valves with shimmed springs and 36mm Mikuni’s, mild porting. Right now it is running points in a can from a 1980 R65. Engine is raised with Motoren Israel kit and has their oil filter set up. Transmission is from a 1994 RT.
Fairing and belly pan are from Glass from The Past. Fairing is Ducat 900SS style, seat is a cut up R90S or R100S.
Fork internals are now Racetech. Shocks are 14″ Ohlins (+1/2″ from stock) with Racetech springs.
Quote from Mike – “I can proudly say that I have fondled every bolt on the bike except for the transmission internals. A lot of things were stolen from my hotrodded R90 which looks very sad right now. It is a bitsa formed from a master plan of the best bits from the best years.
It weighs in around 350# semi wet. Since I am obsessed and building it has been as much fun as riding it, I have some more drilling and shaving of #s in mind. I should just lose some weight, but what is the fun in that?”
Weight Schmeight. Definitely looks like fun Mike. Great job.