Blue isn’t normally a feeling/color of happiness, but when we came across this BMW R100RS Cafe Racer, we couldn’t be more happy. It It is time for a colorful revolution!

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This project started out we a pretty decent bike.
The tank, seat, mufflers do already look kinda sharp!

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First up: Repositioning the battery by reusing the battery box.
Smart solution!

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Nice and Tidy

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Collected the first new parts and started with polishing the airbox covers.

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Also the rear got some cleaning, redesigning and new wiring 

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Next up: Cleaning the headers (what a improvement!!)

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Mounting them

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Cleaning up the “Dash”

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The “big tube” swingarm conversion. This uses an 81-84 swingarm, which has a much larger cross section of the tube that the driveshaft goes through. This greatly increases its resistance to bending, and thus keeps the wheel in line with the bike when exerting side loads during cornering. It is easy to see the difference:

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Replaced the push down rod that had broken off. A new one costs 200 bones. So this one is fixed for now. 

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Batch of powdercoated items and includes the swingarm, subframe, battery box, fender brace, some rear brake brackets, etc. Some of them came out looking amazing, like the swingarm, and other items came out looking pretty rough. It is obvious that the battery box was pretty corroded, and sandblasting stripped alot of metal off in the form of rust. Thankfully, it won’t be seen on the bike and should never rust again.

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Some soda blasting! Shiny!!

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Yup, that’s blue!

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Zinc coated some bits

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Assembling the parts 🙂

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As new!

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Looking good!

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Almost there 🙂

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Fresh paint

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Done! Enjoy this beautiful Blue BMW R100RS Cafe Racer

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Source

 

BMW R100RS Specification (1977 model)

Engine
Four-stroke, OHV, air-cooled horizontally opposed twin.
Bore x Stroke: 94 x 70.6 mm for 980 cc
Horsepower: 70-hp @ 7,250 rpm
Carburation: Two 40mm Bing CV-type
Ignition: Point/coil inductive

Chassis
Frame: Tube cradle w/bolt-on subframe
Suspensions: Tele-fork with twin hydraulic shock swinging arm
Twin 260 mm front w/ATE 1p. 200mm Simplex drum
Tires: 3.25 x 19″ (f) 4.00 x 18″ (rear)

Capacity
Wheelbase: 57.6″
Fuel: 6.3 US Gal
Wet weight: 505 lb
Top Speed: 124-mph

Read more about the history of the BMW R100RS here

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