How to find the right gear ratio ?

[JERRY2KONE]

I love the mount. Nice work. Impressive for a homemade unit. I think you are just going to have to play around with it until you find the right setup gear wise to fit your needs. Trial and error. How heavy is your truck fully loaded?? I was kind of wondering about those 1717 motors. They look much bigger than the 1520, but how much more power can they deliver compared to the Neu 1521 series??