I just uploaded the 2013-01-05 version of JVN-DesignCalc.
This version is greatly simplified from previous versions. The intent is to strip out all the stuff which isn’t relevant and make it easier to use.
Note, this version makes it much easier to iterate. Simply copy / paste the gearing section to play with multiple gearbox numbers for the same input parameters.
First off, many thanks for the reupload. I was hoping you could clarify though, why in 1-Speed Drive (or 2-Speed Drive for that matter) when calculating you multiply by .0254/2 (radius conversion?) and then divide by .3048*60 (revolution per unit time conversion?). More specifically, where do .0254 and .3048 come from? I understand that .0254/.3048 = 1/12 (which handles the in-ft unit conversion), but…
Thanks for the update calculator! I like how the specs for motor combinations are listed. I might be missing something, but I think it would be a good idea to remove the Fisher Price motors from the specs page as they can’t be used this year.