hi torque digital servos going crazy ! need help quick.

[Supernitro17]

ok so today i was bored, and decided to switch some electronics...

i took my jr radio and hi torque steering servo from my losi xxxt and put them into my supernitro, however, I'm still using the stock HPI sx-1 for the throttle. while the radio is turned on , the throttle servo has a tendency to twitch and go sorta crazy sometimes , and from time to time there will be a little glitch in the steering too. i am wondering what this is caused by, if it is mainly the fact that I'm using a digital radio and one digital servo, but still the stock throttle, or is it that i just dont have enough battery power running in the car (I'm just running the 4 AA batteries)

anyone that can help , id really appreciate it. i guess if worst comes to worst i can put the stock hpi stuff back in, but i really like my JR stuff. and i was thinking of using the same JR setup for my savage that I'm getting on saturday (my remote has 2 model memory and i was just giong to get new servos and a reciever)

thanks in advance

 

[SkyMaxx]

Glitching servos can be caused by weak batteries, but typically the problem has more to do with some metal to metal contact that is not tight. When the engine gets going the vibrations cause the loose metal to metal contact to vibrate. This in turn creates an EM field that inteferes with the servo and or receiver. Another cuplrit is a loose connection between the servo and receiver. Make sure the servo plug is firmly seated in the receiver. Lastly, you might have some bare wire contact with the chassis or other metal part. Make sure that the sleeve for the servo wire is in tact and not being crimped or cut through by something metallic.

The last possible problem that you might have is a dead or dying servo. Take the servo out of the car, and check to see how it works without being connected to the steering linkage. If it behaves normally, then the above listing is your next troubleshooting guide. Good luck, and let us know how it goes.

 

[Supernitro17]

thanks skymaxx ...

 

[Çh®i§tiªñ]

Wait a minute, if I read this right, you are using all digital gear EXCEPT one servo? Some pure digital / hrs systems REQUIRE all digital servos. Check your manual to make sure.

Lastly, do you run a failsafe? If so, take it out for a few minutes and see if the same happens. My digital servos are way more prone to twitching with a failsafe as opposed to a nondigital. The only way around this was to get a different failsafe. In fact, it was the same brand.

 

[SkyMaxx]

Good points Çh®i§tiªñ. I didn't know that the JR radio was a full on digital set up (receiver and all). That could also be the problem. The reason I didn't mention it, was I have never had that problem with my own.

 

[Supernitro17]

Originally posted by Çh®i§tiªñ
Wait a minute, if I read this right, you are using all digital gear EXCEPT one servo? Some pure digital / hrs systems REQUIRE all digital servos. Check your manual to make sure.

Lastly, do you run a failsafe? If so, take it out for a few minutes and see if the same happens. My digital servos are way more prone to twitching with a failsafe as opposed to a nondigital. The only way around this was to get a different failsafe. In fact, it was the same brand.

yes christian , everything was digital EXCEPT for that one throttle servo , i figured that was what was messing it up ...

I'm not using a failsafe

sky and christian those are both great suggestions. thanks for all the help .