RE: Replacing a .61 with brushless what's a equivalent?
Is this what you have?
[link]http://www.aquacraftmodels.com/boats/aqub27-main.html[/link]
If so, it's a .46 size motor. For a .46 repacement you could go with an Axi 2826/8 or Mega 22/30/x motor. If you want a .60 size motor then you'd have to go with a Mega 22/45/3 or other can motor.