Motor sounds like a "Drill"

Hi Everyone,

I've changed my foot mount sim to be a should mount Sim and I'm busy reworking all my profiles...
(Why do we keep tinkering?!!!?!? )

It's still not quite finished, but will post pics when it is...

Anyways... I noticed that if I take a sharp right corner and the sim leans, my left hand motor (the one that would be pointing downward) makes a "drill" like sound as it tries to return me back to level.

If I quickly tap the Power Kill, the motor snaps back and it's fine again in terms of movement. Just odd that a quick power off/on make the motor come back to centre, so it's making me think it's power rather than "drive" related. (Otherwise it would just struggle again once power comes back)

Is this a sign the wormdrive is going?? or is this the sound the motors make when hitting stall current??

I never had this sound on my foot mount sim, but the lean angles were not as great then either.

Thanks,

Archie.

if you increased the lean angle, you could be putting too much pressure on the motor to lean you back to centre. Fiddling with PID may help to a point
Try reducing the actual travel of the motor a bit, If it still does it to a point, you may need to look at using 50:1 - 60:1 boxes on the motors.

Thanks guys. Which value in the PID would I concentrate my efforts on? The motor arms are currently very snappy and run well, but happy to take advice on PID settings, as I found some values that worked and never really tinkered with them beyond that point.

When they snap to centre, they sure do "snap". Minimal "settling"... if any.

Thinking I might go the 50:1 to 60:1 gearbox route. Just really can't be bothered reworking the Pot mounts and arm mounts to suit the solid shaft. I'll never get any game time in

I will make a video at some point. Sim is smaller now so fits better into the room. Needs some refinement before I let it out in public though... hideous fan mounts and rats nest cabling while I test profiles etc....

"D" tends to tighten it up, try increasing, but check with "P" as well, might have to reduce it a bit.
Prepare yo may have to fiddle with motor settings as well if need be

Just to close this off, and in case anyone else has the same issue...

It was actually linked to my Feedback going out of range, so the motor would just go back and forth at the last "feedback" point, wondering what to do and would make the "drill" sound because it was rapidly going forward and then back.

To solve this, I put one motor (via the JRK utility) at 0 and the other one at 4096 to give me full lean.
I then reduced the MAX Feedback until the lean was not quite as pronounced.
Using the Input slider each time to check the "throw".

You can tell this is working in the JRK utility because the lean will slowly be pulled back to level the further away from "Max" that you go.

For example, after using "Learn" and your Max is set to say 2800, if you enter 2400 and apply the settings you will feel the rod pull you away from the lean. Then use the input slider again to ensure the lean feels like it should under rapid changes.

Do the same on the other side, and match the lean angle and the Pot's will never go out of range.
I was getting some ungodly sway angle anyway, so it's not a great loss for the Sim experience.
Too much sway and everything just feels like you're driving a boat!!

I also upped my D value a little bit, so now my PID is P= 0.39990 and D = 0.79980 (D was 0.75980)
The combination of all this means that in the JRK graph the Scaled Feedback and Actual Output lines follow each other to the Pixel!