im struggling to get any motors faster too.i need NdFe-Br magnets and a new bbcanand wire thickness too,damn jaycar doesnt have enough variety.But wat i used is pretty simple,use a longer armature with a copper top commuter,0.315mm wire with 13winds per pole in the pyramid pattern.Using a metal bearing not bb can and finally silver brushes.
Not sure how to measure the out capacity,dont have an ammeter or and test equipment.
