From my thread see post #64 in the area near bottom about how to measure section belts circumference, I found yesterday the bumps of the links interfere so you have to note that.
I'll be setting up adjustment so I can tension pulleys between twin stacked jackshafts where I attain a 40:1 ratio on a 26 inch wheel. The power plant is the Briggs 808202 0430 3hp 4 stroke side shaft 70's era engine on a JC Penney Foremost steel frame from the mid 60's that I dumpster dived for. This finished with the transmission it will get a California Sheepshead Fish cloth art cover and creep along at below 5 mph for parades. Oh 1/2 ing the ratio to 20:1 and OHV dirt bike as well as an alternate.