I took mine from something my Dad said one night when I got home from my evening socializing during the summer after I got out of high school.

I had a '51 Ford that I had bought after I got my first full time job right out of school, and I think I spent more money on it than I did my girlfriend. At any rate, I had rebuilt and warmed up the flathead, and built a set of tube headers for it, and put on a new exhaust system. I used two and a half inch pipe for my exhaust, with a pair of 24" glass pack mufflers, and dumped them through a pair of "double barreled shotgun" "drag pipes" just under the rear axle. The car was loud and rumbly, and one night, my dad told me that he could hear "that rumbler of yours" coming all the way from town; that was two miles away with a hill between town and our place on the next hill across a small basin. I took great delight in those pipes, and all of my cars and bikes since, at least my "hot rods", have had pretty loud pipes on them.

Back in the late sixties and early seventies, the CB fad was in full swing and I needed a "handle", and I thought of what my Dad had said; so I adopted the "handle" Rumbler. When I started using the internet, it just followed that my screen name should go along with the line, but I modified it with the extra R, just to be different.