I didn't get any faster, but I did change to a gas Harley dragster instead of fuel to reduce the speed a bit. It went about 150mph on a country road once and about 120mph in the quarter mile in 10.65 seconds; it was as fast as the fuel bike I formerly rode. I never ran it at a speed trial, and quit racing in 1959. I got interested in handling, and still try to learn something about it (now that it's too late). Imperial College in London has done a lot of work on motorcycle stability. Several professors there are bikers and do research for Ducati on the side, so they concentrate on road race handling on pavement. A list of some of their publications is at:http://www3.imperial.ac.uk/controlandpower/research/portfoliopartnership/projects/motorcycles/publications
After going back to college, I got into computers and essentially vanished from the motorcycle scene. I keep telling myself I want to go back to Bonneville now that I'm retired. I did visit in 1954 with a crop duster pilot friend and had an interesting long talk with Otto Crocker. I also visited in 1973 with my mother, wife and 3 kids since none of them had ever been there. The big hang up is that I need a bike and all its support equipment. Maybe after I finish pouring money into my house.