UPDATES:
MOVING HOUSE:. RideTheGearTrain has its own home:
RideTheGearTrain.com
Next time you use your favourite or bookmark it may come up with an error message, but if you just refresh the page it will go to the new address and should retain all your data.(18 November 2021)

MINI-LATHES:
Two Chinese Mini-Lathes have now been added and are working correctly (Precision Mathews-imperial & Warco-metric)

HELP
Select (?) buttons then click 'Return to Menu or Help'.

QUICK START GUIDE
This free online program calculates the best gear train to use on a lathe to produce the required screw thread with the gear wheels that you own.
• Click RUN to see what the program does.
• Click DRAW to see a scale drawing of the gear train.
• Return to MENU. Enter your own data in steps 1-5.
• Choose what you want to calculate in step 3.
• For threads use ONE pitch entry method in steps 5A, 5B or 5C. Option 5C adds drill sizes & thread depth.
For feed rates,modulus,DP only 5A & 5B are shown.
• Click RUN to execute the program again.
• Return here to alter data eg acceptable error.
• RUN again.