That is kinda right! It depends on how tall and thick the grass is. I don't think most people tighten the one belt tight enough. The spindles have tapered wheel type bearings that will take a tighter belt than the straight ball bearing bearings. I mulch manure down in my hay fields and the weak part is the one outside blade will stop first under any plug condition. I have mower weed patches without grass as high as the hood of my B. I have a short video of mowing grass hay with some growth.