Modellismo Fioroni Modellismo Fioroni


€ 209,00
€ 159,00
- 23,00%
Prezzo iva esclusa € 130,33
19 pezzi disponibili


RSx3 is the next evolution in the RSx series of servos. Taking the current RSx2 format and increasing the feeling with the added HCS functionality to achieve a linear feel and response. Best settings for use have also been added to the 5 model memories in each servo.


HCS (High speed Communcation System) is the new high speed communication system between the receiver to the servo. The HCS mode shortens communication time of the signal which is compressed. HCS compatible servos change the mode automatically by signal from receiver. So HCS compatible servos can use with all receivers. If you want to use the servos with HCS, please use with a HCS compatible receiver.

RSx logoRSx3-Power H.C


<Torque type servo>
#Torque:31.6Kg-cm Speed: 0.11sec/60deg(@7.4V)
#Torque:26.3Kg-cm Speed: 0.13sec/60deg(@6.0V)

#Dimensions: 41x38x20cm(Standard size)
#Weight: 69.9g
#Operating voltage:6.0 to 7.4V(Lipo,Life,Ni-MH)
#The hard alumite aluminum gear
#Core-less motor
#Dual bearings

#The hard servo gear shaft
#The aluminum top case
#The aluminum heat shink middle case
#Gold plated connector
#Black cable
#HCS Compatible

#Recommend category
1/8 Off road, 1/8 On road, 1/8GT.

Made in Japan.

HCS is KO PROPO’s own propiortary high-speed communication system. The HCS mode shortens communication time of the signal between the receiver to the servo which is compressed up to 1/4 compared to the former system.

With HCS, the servo starts moving approximately 1/1000sec quicker. The time may seem very small, but with the operation signal being sent is approximately 300 times in a second, this advantage multiplies resulting in a response and substantially a superior smooth linear driving feel. The receiver must receive the signal of data from transmitter without a loss of the signal for HCS effect. So, we developed a new receiver with dual Rx system which has a high quality communication specification.KR-415FHD includes Dual Rx system which is compatible for HCS. If a radio wave drops the other receiver inside is able to reproduce the signal for accuracy to the servo, a KO PROPO unequalled precision.
*Corresponding servos are the RSx3/BSx3 series.
HCS is a compatible system between the receiver and servos. So all of our customer using FHSS transmitters can use HCS. But this true value is used with the EX-RR. Because the EX-RR was developed to have the best steering, throttle and software for use with HCS.
Please enjoy the wonderful driving experience while using the HCS.

How to change the mode.​


HCS compatible receiver can change a mode to each channel 1-4 indiviually. Changing the mode are very easy with the RX mode selector. Switch off the receiver and connect the mode selector to a channel that you would like changed. While pushing the set button on the receiver, turn the power source ON. When the LED of the mode selector lights up, the change is completed. The correspondence servo recognizes both modes automatically. So you do not change mode operation to the servo.


short Antenna

RxMode selector



The correspondence servo recognizes both modes automatically. In the case of use with HCS not compatible servo by HCS mode. Servo can not work. Please change mode to normal mode in the receiver.

HCS compatible models and related products.

Receiver: KR-415FHD, KR-415FHD Short antenna
Change mode device for receiver: RX mode selector

Servos: RSx3 & BSx3 series

Modellismo Fioroni

Privacy policy

Ai sensi del D.Lgs. 196/2003 e successivi vigenti, relativo alla tutela delle persone e di altri soggetti rispetto al trattamento dei dati personali, ti informiamo che i dati da noi raccolti riguardanti la tua persona, saranno utilizzati nel rispetto dei principi di correttezza, liceità trasparenza e tutelando la tua riservatezza e i tuoi diritti.

Invia Richiesta
chi ha comprato questo prodotto ha acquistato anche...


Acquisto sicuro
Modellismo Fioroni

Modellismo Fioroni s.r.l.
Via Monti, 4
20059 Casarile (MI)
+39 02 900 963 62
+39 02 900 908 10

P.Iva 03529830964


Iscrivendoti alla nostra newsletter sarai sempre aggiornato via mail sulle ultime novità...

Iscriviti Subito
  • Modellismo Fioroni
  • Modellismo Fioroni
  • Instagram