Servo/speedo questions

[tdi250]

Hello,

I'm getting back into 1/10th buggies after a long break and have been running my old brushed ESC and motors with an old quick servo until now.

However i have purchased a brushless ESC (LRP Sphere). I was going to use it with my brushed motors until i could afford to get some new brushless ones but i am concerned that my servo may not work with this speedo.

My old Tekin brushed speedo has a wire coming from it which connects to a single wire on the servo via a resistor, as well as the usual 3 wire lead to the receiver, obviously the LRP Sphere doesn't have one of these wires, does this mean that I now need to buy a new servo also? and if so what sort do i need as i'm still using my old 27Mgz radio gear (stop snigggering!!) :)

Any help would be great!!
Ta
Wes

[sosidge]

It sounds like you have an older KO servo, the extra wire is a 7.2V power supply and can be picked up from anywhere along the battery positive wire.

The "resistor" is not a resistor, it is a choke.

Both the choke and the wire/plug/socket should be available seperately, I remember that Trickbits (via Horizon Hobby UK) used to do the choke and RC Disco should be able to supply the cable and connectors. Or you could hardwire it.

[tdi250]

Thanks sosidge,

I remember now, a choke that was it!! It's been a while!! lol!

So if i just unsolder the speedo end of the choke and hardwire it onto the positive battery wire somewhere, that should do the trick?

[john333]

Thanks sosidge,

I remember now, a choke that was it!! It's been a while!! lol!

So if i just unsolder the speedo end of the choke and hardwire it onto the positive battery wire somewhere, that should do the trick?

Yes that will do it :thumbsup:

Some of our top racers still use 27 meg so it's no sniggering matter lol (Neil Cragg does I believe)

[tdi250]

Thanks mate,

I thought everyone was on 2.4 Ghz these days. Neil Cragg IS a big name!

Nice one!