thats y the rpm limit was imposed. However a used motor that had never been tweaked, Only regular cleaning,oiling and com drops pulled above that limit when tested.

Back in the brushed days the novak GTX? was the speedy to have you could not get close with a budget speedy. I ran 540 with a $50 speedy, then some of the other guys i enjoyed close racing with bought higher end stuff and i struggled to keep up. Its the way of this hobby and has been for years, just moreso now that new tech comes out fairly reg and to be up the pointy end u have to update. Remember brushless tech in rc is still young there will be a point where they wont be able to go any further with AT tech then they will search for other areas to get more out