a little off the subject, but years ago i used to race motorcyle Endoro races uo and down the east coast. Some of the state racing chapters had minimum weights for the bikes. As a general rule, you would make you bike as light as possible. we had on guy whe had ( at that time rare) magnesium wheels. to make weight he used to put colorfull vac tubing on the spokes. Looked like a kids tricycle, but boy, could he ride.
dreaming of the long ago days...whe i had both complete knees....and a 77 40 series