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BrianG · 11.03.2008, 11:12 PM

Sounds reasonable to me. 40mph on 4s should be pretty easy to do. Feigaos in general will tend to get warm no matter what you do since their efficiency is lower than other better motors. Stepping up to a Medusa 60 (or 70mm) motor around the same kv would be better.

4s on the 8XL is good, but 5s is pushing it a little. Those motors like to go no higher than ~35krpm before they starting getting too warm. Another reason to get a Medusa because they don't mind higher rpms.

BTW: Welcome to the forums!

	(#2)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	11.03.2008, 11:12 PM Sounds reasonable to me. 40mph on 4s should be pretty easy to do. Feigaos in general will tend to get warm no matter what you do since their efficiency is lower than other better motors. Stepping up to a Medusa 60 (or 70mm) motor around the same kv would be better. 4s on the 8XL is good, but 5s is pushing it a little. Those motors like to go no higher than ~35krpm before they starting getting too warm. Another reason to get a Medusa because they don't mind higher rpms. BTW: Welcome to the forums!