ORIGINAL: tIANci
Here is a simple guide:
64mm EDF 3S - 20mm/24mm motor - 4,200KV to 5,300 KV
70mm EDF 3S/4S - 28mm motor - 2,600KV to 3,300 KV
90mm EDF 5S/6S - 36mm motor - 1,600 to 1,800KV
Have fun ok!
thank you very much for the reply and guide!
I don't mean to question your recommendation, but the website says the fan requires a 3900Kv motor. You are recommending a 1800-2600Kv motor (since the fan is ~80mm). People that have left comments about that fan say they ran it up to ~30,000 rpm.
So what should I buy for a motor? Should I get a 2500Kv motor (14.8v) so it spins up to 37,000 rpm? Should I get a 3900Kv motor that would 'TRY' to spin the fan to 57,720 rpm?
Is the recommendation on the site wrong about the fan needing a 3900Kv motor?