This is one of those things I try to do to every BMW motorcycle I rebuild.
This area is cracked on nearly every frame I tear down. It is the rear foot brake area which also is the muffler / silencer hanger, and where the passenger foot pegs attach. This frame is a 1978 BMW R100s. If you are considering rear sets on your bike that attach to this section, then I HIGHLY RECOMMEND doing this procedure.
cracked tab near rear foot brake pivot hole on BMW airhead framecracked tab near rear foot brake pivot hole
cracked tab near rear foot brake pivot hole on BMW airhead frame
New piece of metal to weld onto the old cracked section to reinforce the area making it MUCH stronger and no longer prone to cracking.
Welded metal onto the rear foot brake section of a BMW R100S
Finished powder coated frame with the welded metal. This area is out of sight to most people unless they take the rear tire off.
This bike is a blast to ride. Fast and zippy for a small bike but next to a real motorcycle, you realize how slow you are going! The restoration took about a year. I had help rebuilding the engine and transmission. A friend Adam helped me weld the bump onto the seat. Chrome, powder coat and paint were all locally sourced. Custom YSS shocks. Assembled by me. The only bummer is that I could not find the correct street Bridgestone tires to put on the bike.
This makes bike #4 I have gotten out in the Desert. Three R75/5 models and one R90/6.
Just the way I like them too… cheap and dead. I can’t allow myself to chop up a good condition BMW motorcycle but when they come to me like this, I can get creative. Luckily it came with a good condition toaster tank.
This one is going to be restored for a guy who spent the last 6 years building hospitals in Saudi Arabia. He wanted to treat himself to a BMW or two when he returned so here we go!
We’ll probably upgrade this engine a bit, go to a 5 Speed kick start, and get this ready to tackle the roads and hills in Michigan.