You didn’t finish your story. Are you living in America? Did your Grandfather come back to America? Tell us more!
Oh, sure. He came back and was a factory racer for Indian motorcycles, setting cross country speed records in the 1920’s
He was eventually recruited by Harry Miller to develop fuel injection systems for Miller Racing Engines Co in Hollywood, Ca.
Miller went bankrupt and was taken over by Fred Offenhauser - well the rest is history as Offenhauser racing engines dominated Indianapolis and just about every other race track from 1930 to 1970 in the dirt or oval venues.
Grandpa was a self trained non degreed master mechanic, machinist and intuitive “engineer”
America doesn’t make people like him anymore