Ruby Racer 2.0
Ruby has gone through several transformations. She is a working model of the excelsior motor, and she has had her good days and her bad days out on the race track. August 13, 2011 was her inaugural race, and she handled quite well. In all, we did two practices and two races. Best lap was a 1:54. She’s good in the corners; stable but agile. No wobbles, but definitely light under acceleration. My race motor is very similar to the boardtracker motor, except for 12.5:1 pistons, Spanish Amal carb, electronic ignition, and tuned pipes. On the dyno it had 70.9 rear wheel HP at 6000 rpm. This is likely 85 engine HP.
If you want to learn about her performance and the issues I have encountered on the track, check out my race diaries in the Archive. Lots of photos and descriptions of her performances.
Below are the two principal phases, 358 and, currently, Ruby 2.0.