Friday, May 25, 2007

Gearing

14/40 (15/43) (Stock = 15/39)

14T Renthal front spocket (Apex Leisure)
40T Driven rear sprocket (Motowheels)
Tsubaki
520 Alpha X chain (Apex Leisure)

Some notes from the gearing report produced by Gearing Guru Performance Modelling
  • RPM at 60 mph: 4078 (About perfect for this engine and bike)
  • HP @ 60 mph: 41 (17% better than baseline! And, 6% better than the most conservative solution above)
  • 0 to 80 mph: 4.61 (0.26 second quicker than baseline! That is huge)
  • Quarter Mile Sec: 11.39 (0.20 second quicker than baseline. Very substantial improvement)
  • RPM at top speed: 8293 (Fine)
  • Maximum Gs: 1.05 (12% better than baseline! This is as good as a good engine mod program would get you)
  • RPM at 80 MPH: 5438 (Pretty ideal for this engine)
  • Crawl speed: 20 (Actually 12% better than baseline before mathematical rounding, and a solid improvement)
  • HP available at different speeds in top gear: At 80 mph, you now have 53 hp versus 48, or 10% more.
  • Tractive force graph: Note that we have solidly connected with the traction limit at high rpm.