Test & Race Information (Private) - Optimum Gear Ratio Calculator

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Optimum Gear Ratio Calculator

Printed From: Brock's Performance
Category: StreetSmart Owners Section (Private)
Forum Name: Test & Race Information (Private)
Forum Description: How to make your fast bike FASTER!
URL: https://forums.brocksperformance.com/forum_posts.asp?TID=805
Printed Date: April/28/2025 at 3:48am
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: Optimum Gear Ratio Calculator

Posted By: Brock
Subject: Optimum Gear Ratio Calculator
Date Posted: December/30/2006 at 8:05pm

Hey Guys,

I get questions about gear ratios ALL of the time.

I use some handy charts we have recently added to the site to help you determine your perfect ratio for the drag strip or Maxton etc.

HAYABUSA CALCULATOR:
www.brocksperformance.com/charts/gearchart_gsxr1300r.xls

ZX-14 CALCULATOR:
www.brocksperformance.com/charts/gearchart_zx14.xls

GSX-R1000 CALCULATOR:
www.brocksperformance.com/charts/gearchart_gsxr1000.xls

Save the calculator for your bike on your desktop.

Open the file and try changing the sprocket sizes (Secondary Reduction) in the chart to calculate speeds. It shows all gears.

We have added the proper transmission ratios and crank ratios for you!

Your tire size may differ. We paint a line on the tire with silicone, etc. then roll the bike (with the rider in place) to make marks on the floor. Measure the distance between the marks to determine circumference for your tire.

Have fun!

Brock

ps. Special thanks to Dave O for supplying the charts AND allowing me to post them!