Guides for the shop

What the catalog doesn't tell you: how to measure, how to choose and which mistakes to avoid, explained with real numbers.

• 
  How to measure a sprocket with a caliperCount teeth, measure tips and root, the odd-tooth trick and how to spot a hooked tooth.6 min read
• 
  08B vs ANSI 40: European or American chainSame pitch, different roller. What changes, can you mix them, and how to tell them apart.5 min read
• 
  How many teeth should a sprocket haveThe 17-tooth minimum explained with numbers, maximum ratio and a complete example.6 min read
• 
  Material and heat treatment for sprockets and gears1045, 4140, 8620 and more: when to use each, how to harden and typical mistakes.7 min read