The heat output fans always get brittle and break after a year.
Ive owned at least 5-6 of these units, i get them because of the double hose feature, every single one ive owned the plastic fan that blows the heat out of the unit and outside falls apart.. and it takes about a year for this to happen, you would think they would put a metal fan in them by now.
Reef's RC REEFS54 - Raw 500 Waterproof High Torque 7.4V Brushless HV, Servo
Feb 28, 2020
Amazing
The best servo ive ever used period... powerful , fast and waterproof.