I also run a 50 series Medusa in my daughter's crt.5 w/no issues
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S
Freind of mine ran one in his and it was great, only problem is since the rear of the motor faces forward and is not secured very well a few bad nose landings and the rear popped off. Secure the rear of the can and it is a great motor.