| USER INSTRUCTIONS: | The BLUE entry points Blue below are where you may enter combinations of different values for the number of teeth on the CHAIN RING and REAR sprockets and the chart will compute the resulting Wheel Sizes for the different Gear Settings. If your browser is MS Internet Explorer then to compute the result after entering new data you may press Enter or click on any other part of the form. With other browsers use only the second method. On changing the option in the combo box the result is computed automatically. | ||
| Mouse or Keyboard TAB key: | You may reach the DATA ENTRY points by pressing the TAB KEY on your Keyboard which cycle you through the various data entry points or by MOUSE CLICKING the entry point allowing you to enter different spocket teeth values for comparison combinations. | ||
| HELP Messages & Notes: | On the right side of the chart, you will see the words HELP and NOTE. MOUSE CLICK on these words for the Help or Note message associated with that area. |
BROMPTON SRAM 3 SPEED GEAR CALCULATIONS with the FRONT DERAILLEUR OPTION