/2 differential timing

Correcting the timing difference between cylinders on the /2 BMW motorcycle twin. by Duane Ausherman Since 1951 the BMW twin has had a magneto ignition system.  It is made in such a way that it can result in a different ignition timing for each cylinder.  Some call this a double image or split image.  One …

defective R60/2 pistons

/2 BMW motorcycle pistons by Nural, especially the R60/2 and ring orientation. By Duane Ausherman This page is about the BMW motorcycle models R26, R27, R50, R60, R69, R50/2, R60/2, R50S, R69S, R50/US, R60/US, and R69US.   Some info on the 1974 R90/6 and the R90S that leaked oil from the rear main seal. The early …

About Duane Ausherman

My motto is We can all do more than we think we can. Duane Ausherman  You may find some of these articles to be interesting, unusual, or boring. More articles may appear as I find photos that remind me of something. About Young Duane Real or Fake, I think that you will find this to …