BMX Racing: Front & Rear Sprocket Size Debate

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SUMMARY

The discussion centers on the impact of front and rear sprocket sizes on BMX racing performance. Participants agree that while larger sprockets provide more leverage and mechanical advantage, the weight difference between larger and smaller sprockets is minimal. The consensus is that achieving the same gear ratio can be done with either size, but using longer pedal cranks can enhance leverage without altering the gear ratio. Ultimately, the choice between sprocket sizes depends on personal preference and specific track conditions.

PREREQUISITES
  • Understanding of BMX racing mechanics
  • Knowledge of gear ratios in cycling
  • Familiarity with pedal crank lengths
  • Basic principles of leverage in mechanical systems
NEXT STEPS
  • Research the effects of gear ratios on BMX racing performance
  • Explore the relationship between sprocket size and leverage
  • Learn about the impact of pedal crank length on cycling efficiency
  • Investigate different BMX racing track conditions and their gear requirements
USEFUL FOR

BMX racers, cycling enthusiasts, and parents of young athletes looking to optimize performance through gear selection and mechanical advantages.

hosburger
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Hi , just joined the Forum . It would be nice if I could get some 'educated' answers!
My son does BMX racing. Gearing is very important to how well he will perform on different tracks. My questions is - are we better to run large front and rear sprockets or smaller and lighter front and rear ? ( actually the weight difference is minimal ) I can achieve the same ratio both ways but can't help but thinking if we go larger then surely we achieve more leverage and mechanical advantage in both front and rear .What do you guys think ?
 
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I can't see why it would make any difference, at least in a practical sense. For more leverage, try using longer pedal cranks. Of course, that would effectively be changing the gear ratio.
 

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