That s a question like: "how fast does a car go?"...

It depends very much on the hullshape, hullsize and the setup.

If you do a bit of reading you'll find that a rigger is the fastest hull, but the hardest to setup.

Check out the results of the various SAW trials and see what speeds are possible with different hullshapes, motors and number of cells.

Another thing to keep in mind is that most 500 series motors are only about 65% efficient, the rest is heat and friction..., there are more efficient motors around.

Regards, Jan.