HOBAO Hyper 9E Build complete

[Marvin]

On 4S I'd use a 1900 or 2000kV motor. The maximum RPM is right in the 28000-35000rpm efficiency range with these, and it makes gearing easy.

I used to run a 36-60-2000 Medusa in my Hyper 9E, on the same cells that you have, geared 15/40 and it was excellent. I would now go with a 14T 1st however, which is nice, since they include one with the kit.

It's such a bummer Medusa aren't around anymore.