futaba 9254 for t-rex450??

[rayman]

I have hiteck hs-81 for my tail servo at the time.but i think this servo is to slow, and if i give full pitch/trotel the rudder kan almost tunr 360degrees. but i have a raptor50 just hanging on the wall because it is nitropowered and if i wana fly that size i rader fly my 600cf-rex.but the thing i am wundering about is, can i usefutaba 9254 for my 450 t-rex whit 401 gyro.i have ordred a new tail servoFutaba S9650,but i dont wana wait that long. if it is ok to use it, do i have to use a 5.1 step down voltage regulator??and where must i annsaø it? betwine the servo and reciver??

[istandalone]

you can use that servo for your 450 tail, but it's a full size servo whereas usually with 450 class helis a micro servo is used. it'll also make your heli more tail heavy, which is easily balanced out by moving your lipo pack forward a little bit. you really should use a stepdown with it too, but it can be used without one. it will definitley shorten the servo's life, not using a stepdown.
and where must i annsaø it? betwine the servo and reciver??
i'm not sure what you mean by this. if your asking where to connect the stepdown, connect it between the gyro and servo. if your asking where to mount the servo, the only way you'll get the 9254 in a 450 is to boom mount it.

[RMJ22]

My T-Rex 450 has never flown, still in the build setup process, but I have the 9254 with GY401 on it. I don't care for the size of this full-sized servo weighing down the tail boom, plus it doesn't fit the stock mounts so only 2 screws fit to hold it on, which isn't going to work. What micro-sized Futaba servo is everyone else running on the tail? I maybe be heading that direction. . .unless maybe there's another mount kit that would allow all 4 screws to be used??

[schwaggs]

I am using a 9254 on one of my V2s and it is very fast compared to the 9650, it is also quite big... the 9650 or 9257 is more correctly sized for the 450.