Got a question, so I have some backup 50mm ECS driveshafts. Will they work with the stock plastic spool cups? Or do I have to upgrade to the aluminum diff outdrives and run blades as well?
I think they'll work with the plastic outdrives, but the end won't be very deep in the outdrive, so theres a higher chance that the outdrive will break in a hit.
The diff outdrives only work with a diff. For a spool, you'd want to use the xray steel spool outdrives or Side Piece Racing's Nikita aluminum outdrives. I think Flying Fox make some aluminum spool outdrives as well. And yes, all would require the use of 3.5mm blades.