03-24-2016, 03:18 AM
Without dyno charts it's difficult to see what is happening with horsepower and torque and I notice they quoted horsepower at torque and not peak horsepower at a given rpm and peak torque at a given rpm. Changing sprockets just rearranges where the peak hp and torque numbers come in the rev zone.
When I raced motocross we had a stack of front and rear sprockets on a dowel for use at different tracks. If it was a tight track you geared it down, if it was an open track with long straightaways you geared it up. Find the right gearing for a particular track and you'd write it down so the next time you came to race you could concetrate on lines and not working to get the gearing right on the bike.
It's why MotoGP bikes have cassette type gear boxes. They have gear clusters already set up for each track which they have recorded from past races.
When I raced motocross we had a stack of front and rear sprockets on a dowel for use at different tracks. If it was a tight track you geared it down, if it was an open track with long straightaways you geared it up. Find the right gearing for a particular track and you'd write it down so the next time you came to race you could concetrate on lines and not working to get the gearing right on the bike.
It's why MotoGP bikes have cassette type gear boxes. They have gear clusters already set up for each track which they have recorded from past races.