Vulcan Bobber Project
Calculation error, the solution
The chain was now 2 cm too long! My first thought was "Damn it". My second thought was "How about 18 teeth up front instead of 16? That would take care of the excess chain".
I made two new cardboard templates for the two front sprockets, 16 and 18, and measured to 1.3 cm with a ruler. So switching from a 16 sprocket to an 18 up front would pull the wheel axle 1.3 cm forward, which means 2.6 cm of chain. I later used this to make a more precise calculation in Excel and got 1.2 cm instead, which is pretty close to the measured 1.3 cm.
An 18 teeth sprocket is now on order.
Calculation error, the solution
The chain was now 2 cm too long! My first thought was "Damn it". My second thought was "How about 18 teeth up front instead of 16? That would take care of the excess chain".
I made two new cardboard templates for the two front sprockets, 16 and 18, and measured to 1.3 cm with a ruler. So switching from a 16 sprocket to an 18 up front would pull the wheel axle 1.3 cm forward, which means 2.6 cm of chain. I later used this to make a more precise calculation in Excel and got 1.2 cm instead, which is pretty close to the measured 1.3 cm.
An 18 teeth sprocket is now on order.