Blue wire on Sphere Comp.

[ErikRC10]

I finally got my Sphere Comp today and it looks really nice and it come with more things then I thought like a power cap and heatsink. but there is a blue wire comming out of the side along with the on/off switch that I don't know what it is and I didn't see anything in Intructions about it. Does anybody no what it does, because I mean it's not fraied on the end to solder or anything. I just don't want to screw up my brand new esc. Thanks for the help.

Erik

[ElectricThunder]

It's for servos that use FETs (they need the extra voltage and current or something). A lot of LRP's ESCs have them. You probably don't need it, so just bundle it up with all the other little wires.

[Rtsbasic]

ET's correct, its for use with FET servo's that operate off 7.2v, e.g. most Ko Propo servo's. If you have a particually poor rated servo - e.g. Futaba S3003, you can "overclock" it by getting connecting the red pin that normally goes to the reciever to the blue wire, to make it run on 7.2v as opposed to the 5v the LRP provides the rx. You do need to run a small FET "choke" inline on the wire though, otherwise you will get radio interference from it. Well worth doing, makes a cheap servo feel a *lot* better, both in speed and torque. You do wear it the servo out a bit quicker, but at the end of the day, its perfectly safe to do so, I've never damaged a servo doing it.

[ErikRC10]

so I don't really need to worry about it right? if I do I'm kinda confused....

[ElectricThunder]

so I don't really need to worry about it right? if I do I'm kinda confused....
Unless you're running a Ko Propo or super duper high end servo (that uses FETs), then I doubt you'll need the wire.

[ErikRC10]

okay thanks. I'm not running a high end servo or a Ko Propo servo so I should be good.

[Rtsbasic]

Just insulate it and tuck it away and you'll be fine.

[Vic Nyce]

... You do need to run a small FET "choke" inline on the wire though, otherwise you will get radio interference from it. ...
what is a FET choke? im intersted in this as i have a S3003 servo in my otherwise top line gear :D