Boxerworks.com

:D Brookes garage to the rescue. What a great resource his stuff is. :D https://brook.reams.me/bmw-motorcycle-rebuilds/1983-bmw-r100rs-rebuild-project-index/34-bmw-1983-r100rs-disassemble-inspect-rebuild-master-cylinders/ There is a front dust seal and large flat washer that are installed in the thr...

My R100RS is an 11/1981 build. Handlebar mounted master cylinder, 13mm, changed from 15mm many years ago with a great improvement to feel. The lever travel had diminished recently, but still ok, so I removed the master cylinder to investigate. The master cylinder looked good, and I ensured the hole...

Thanks @SteveD, helped me find a poor ground from the D- brush due to the cable being soldered too short and holding the brush off the rotor. Posts like this save a lot of time and money on troubleshooting and help us getting our bikes back on the road where they should be. Thanks a lot for taking ...

Finally finished reassembling the RS (rear end yesterday) and it's ready to test ride.
The shed got a minor tidy up as stuff got put away! Still too messy though.

A clean and a couple of coats of caliper paint and they'll harden for a week or so until I fiddle further. https://photos.smugmug.com/Brembo-F08-rebuild/BMW-brakes/i-TvSnkLL/0/DNL36PL7pvW96XktN58r2j8wZThhxSwx2M2zXd6J9/XL/2024042621044193-9148985334153116451-XL.jpg What's so different about caliper ...

+1 what Steved said. FWIW - my pistons were OK, but there was sludge in the caliper. Use only brake fluid to clean inside (some alcohol is alright but no mineral spirits, gas, etc.). I reinstalled my trans last week then stopped to replace the rear brake hose. I noticed the piston seal had herniate...

Screenshot 2024-03-24 at 11-01-30 Bing Carburetor floats on BMW Airhead Motorcycles.png Snowbum says new floats on all Bings are 10gm. He also says 13.5gm is likely "maximum allowable". Ongoing adjustment might extend their usefulness, they'll need replacing eventually. https://bmwmotorcy...

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Screenshot 2024-03-24 at 11-01-30 Bing Carburetor floats on BMW Airhead Motorcycles.png Snowbum says new floats on all Bings are 10gm. He also says 13.5gm is likely "maximum allowable". Ongoing adjustment might extend their usefulness, they'll need replacing eventually. https://bmwmotorcy...