DollaTek RC Cooling Fan Dual Head RC Motor Fan with Aluminium Radiator for 3650 3660 540 550 36-38mm Brushless Motor

Does not fit my 3660 motor exactly BUT it has 3 holes which are perfect for attaching cable ties, which I would have done anyway for piece of mind. The small gap between the motor and heatsink helps with airflow from the down firing fans.

Size is 42mm and fits rival mt8 perfectly, good quality

Bit big for motor in description but if you push the edges in will fit on motor and them two fans push some power and certainly keep motor cool bit loud but at least you know they working I would recommend this product

does not fit a 3650 or a 3660..... fits well on my 42mm motor so now i have a spare..

Fits snuggly and fans have very good power, but a bit noisy if you care about that. But after 3 uses one of the wires fell out of the fan making it unusable and unrepairable so only 1 now works :(

Works a treat on my ftx dr8

Disappointed as it did not meet description of fitting a 540 motor, even when bending it to try and make it fit it does not fit nice

Inte bra alls! Den va för stor för min 3660 motor och jag fick böja in den ganska mycket för att passa en 3660 motor. Fläktarna kyler annars bra men låter riktigt högt på full hastighet men kyler därmed bra.

Ottimo prodotto..un aereo..soffiano tantissimo, estetica molto bella

Ne convient pas à un moteur 3660, radiateur trop large

Es perfecto y muy solido

Ich bin echt beeindruckt für einen kleinen Preis, zwei Lüfter zu bekommen, die auch super passen. Ich persönlich kann den Lüfter nur weiter empfehlen, wie sich die Lüfter bei den ersten Sprüngen verhalten, weiß ich jetzt leider noch nicht aber die Kühlung ist super bis jetzt 5 Sterne