Belt material

Hi,
PU (polyurethane) belt (with steel re-enforcement I think) is considered to have advantages over a rubber one.
But I am not sure about the min. bend radius. Anyone tried that on 16 tooth gt2 pulleys? Can it run on them without issues?
Thanks,
Andrej

I have not tried anything else. The standard gt2 belt we use is also reinforced, and the forces are not very high.