After purchasing the flipsky trucks, I find that they dont fit my style of wheels. I have the 12 inch trucks coming. But, if I take the hanger off the 15s, I can chuck it up in a lathe, and strip off the aluminum machined diameter. The pulley is VERY stout, and has two 6099z bearings. This means standard bearing dims, but a 10mm thru hole. And so, it fits the axle, just doesnt go far enough in, to get any threads to mount wheels. And so, I purchased some 6900-2rs bearings, to make the wheels fit the 10mm as well. Simple operation, and gives me the stronger trucks with wide stance. I am thinking that the wide trucks will increase stability.
That shiny part should be removed, to scooch in the pulley, till the motor aligns. This will have a slightly narrower track than the front, but will look rather cool, and three points defines a plane.
This also makes it less likely that I clip the rear on stuff. I can watch the front.
And so, it will require a 10mm spacer to mount wheels, or, grind down dia some, and run a die further up the axle. Very doable. This allows easy fit of 6374 r motors.
This makes a great way to fit 6374 motors, AT wheels, and have a stout truck. The machining is fall off a log easy. I am likely to be able to fit a 15mm wide belt.