Castle 1717 Higher than 6s

[b.mcdaniel.2009]

You're thinking backwards though. The larger the hull is, the less freedom you have to add RPM. The larger hull will pull more current than the smaller one, even on 6s, just because its a greater load/hard to push. The larger hull also requires a larger prop, which compounds the problem. If you want a reliable setup to go faster in that big of a boat you have to go up in voltage and DOWN in kv. Run it on 8 or 9s, but at the RPM you are running in your 33", and you will be able to prop it to go just as fast, probably faster.

Okay I understand now. thanks for the info like always keith!

I have a X452 I want to try on 6s and a X457/3 I want to try on 5s

Get some video of that!