What Pulley/belt system I should use?

While waiting for the spindle and other parts, I installed this little baby spindle

When this little spindle grows up, it will be a bt-30  



Philip

 

I was able to find this coupling locally with tapered bushing

looks slightly undersized, I will have to calculate the design torque for the belt. looks very cool.

I could not find multi-rib pulleys locally. I will order over the net