Can anyone provide insight on this:
Using this timing belt length calculator I am confused as inputting my options seems to grey out what I want. I am using 36t/15t HTD5 pulleys with a 15mm belt. Center distance is the average from my mount (Boardnamics Caliber II 63mm Motor Mount)
For some reason when entering these inputs it greys out the HTD5 option. I can select is only with a 13 or 17t small pulley. But not 15t?