[suicideneil]

Peak ratings will be alot higher too on less efficient motors- they heat up quicker the harder you push them, compared to better quality motors (9XL vs Medusa 80mm 2000kv- personal experience).

Feigaos do cost ~$60-80, and the Medusa ~$140-150, so I can see the issue there, but its worth waiting a little longer to get a motor that will last years, rather than buying a cheap one that will last a few runs if you dont watch it like a hawk.

If you already have the 7XL, its best to run it with 4s lipo for certain- if you are dead-set on 5s lipo, save up and get the medusa or CCneu 2200kv (or the 1800kv motor thats coming soon- longer and more power, and kv is better suited to 5s lipo).