steering glitch

[Mike5025]

Building a wraith kit with my son. Put battery in front(3s). Spektrum TX/rx. Tekin fxr, castle bec set to 7.2, wired direct to servo, only signal wire to rx. Every time we punch the throttle the wheels turn, they straighten out as you drive, but even when you're moving, punch it and the wheels turn. Any ideas?

[SMR 510RR]

Spektrum radios have been known to glitch without a ground wire going from the servo to the rx. That would be the first thing I would try.

[Mike5025]

So can I share the ground with the bec?

[Charlie-III]

Originally Posted by Mike5025

So can I share the ground with the bec?

Spektrum radios like the servo ground to the RX to reduce glitching.

Right now, you have 2 servo wires going to the BEC & 1 servo wire to the RX (signal).

You either need to move the servo ground (black or brown wire) to the RX or make a jumper so the servo ground goes to the RX & BEC.

[Mike5025]

Made the ground go to both, works great, thanks!

[Santee Creeper]

I'm having the same issue. running a Hitec Shredder RX with Hitec HS-755mg servo and CC bec. should i also (as the org. poster above) run a jumper wire from the servo back to the RX? i have the BEC powering only the servo. bec is set at 6V. Radio is old Hitec sport AM 27mhz. Green freq.

[Charlie-III]

Originally Posted by Santee Creeper

I'm having the same issue. running a Hitec Shredder RX with Hitec HS-755mg servo and CC bec. should i also (as the org. poster above) run a jumper wire from the servo back to the RX? i have the BEC powering only the servo. bec is set at 6V. Radio is old Hitec sport AM 27mhz. Green freq.

That may help, but running some of todays ESC's & servos on a AM or FM radio has it's own challanges.
You may want to go to 2.4ghz soon.