scythe wrote:Only issue you might have with the spider couplings would be from slipping on the shaft.
Dimple the shaft where the grub screws sit at the very least and it will probably be enough.
What sort of motor are you using to drive it? Wiper motor?
Unfortunately this style of coupler doesn’t have a grub screw directly into the shaft, it just relies on compression. If it slips, I’ll just have to drill through and tap a hole for my own grub screw.
The motor is from Motion Dynamics. Motor/gearbox combo is designed specifically for this job. I should have bought the kit years ago!