Motor Pinion Came off Again, what am I missing?

[Velodromed]

Hey Boss question on these

The shaft is long, so how do you use them with your pinion if the set screw is this long? With the FireTeam the set screw is pushed down to the end of the motor shaft, so it is under or within the motor mount bracket. It would not make a full turn being this tall unless I see this wrong

Thx

Hey buddy, that’s an issue I haven’t had yet. I’ve a Noto, Kraton and five, 3s cars and the pinions on them aren’t tucked in as far.. Those grubs come in 3 & 4mm also. I only like the 5mm for the deeper hex, which helps it not strip out. It’s the flat tip that makes the main difference though in securing the pinion. Compare them to the normal cup tip and you’ll see what I mean.
60Pcs M4x4mm Grub Screws Flat Point Socket Set Screws High Tensile 12.9 Grade Steel Black Oxide (60Pcs, M4x4mm) https://a.co/d/9Yy4TLT