Compact Full frame, 2Dof with TL

@noorbeast Hey mate, What would be causing the front 2 motors to be easy to move even whilst powered? not as in rotate all the way but i can move them about 20mmish before they "Load" up properly i hope that makes sense, im getting an issue whilst traveling in a straight line the sim sort of wobbles left to right a bit, Only in a straight line, I know the worm gears have back lash but i would have thought the weight pushing on them would of held them firm unless direction changing

Any idea's???

Cheers

I'm thinking the latter issue could be a balance or rod upper location issue perhaps? i think i need to put more weight on the motors maybe?

The balance point was pretty bang on when i put everything on the upper frame and put a pipe underneath then sat in it and marked it for the pivot point/Uni location

@Blame73

Hey mate, was reading back through your MD30c information and was wondering if you ever experienced any issues with your motors having like a "soft area" either side of center?

Basically when the sim is powered and stationary i can grab the levers and push them down a bit with quite little resistance to a point then they stop and when i let go they slowly come back to where they were bump it and it starts to wobble around then it settles and stops as well and when driving on a straight road it sort of rocks side to side, I've found if i add a bunch of weight to the front of the sim it goes away, but thought there may be a setting in the code somewhere to make the area around center "stronger"?? rather than adding unnecessary weight,

@p00ky have you had any issues or have any thoughts?

@noorbeast i checked my balance and its definitely got a bit of preload over the front, as it drops to floor when powered pretty quick, even when I"m sitting in it'

Also looking to purchase a server power supply shortly for once its done and goes inside, Question, Will i need anything fancy between the power supply and battery and is a small sealed motorbike battery all good for absorbing the regen?

Cheers for the help over the years Guys!

Yep very slight preload on the motors, I've also moved the levers to next hole inwards to try slightly shorter c-c distance but same result,

I'll take a video this arvo of what I'm trying to explain, But i guess it kind of acts like suspension (up&down) by a few degrees before it goes rock solid, But I can stand on the pedal plate and run SMC3 testing an it is flawless but sitting in its spongy around center like its not being powered fully near center to hold it there, when stationary on manual mode in the center position adjusting the settings in SMC3 do not help the issue, Hence i was thinking maybe something in the code and not so much a backlash or balance issue (unless it wants way more front bias) I'd say at least 5 to 10kg!

Cheers Noorbeast

I'm using the 25:1 units from Motion Dynamics they do have a little bit of back lash, The c2c at the moment would be about 45mm I'm pretty sure, It was at 55-60mm in the next hole up, Thought i would try smaller to see if it helps but same same,

When the unit is powered up i can feel the backlash with my hand which is fine i get that bit, what i mean is with it powered up sitting idle at center i can grab the c2c lever and move it by hand past any backlash either way which is a good few degrees of travel before i can no longer move it by hand, I can feel the motor resisting more and more until i can no longer move it by hand, I would have thought that it would go just off center and the motor would register the movement and try to return to center and stop me or just be at the point of not letting me move it at all in the first place,

I think the video will explain it better i hope, Appreciate the help mate hopefully between us all we can work out whats going on haha, It just seems strange and I've spent hours trying to find someone that has had similar issues to no avail

Cheers

Oki doki here's the video

https://youtube.com/shorts/v1PkDIv9hTk?feature=share

Cheers

Kp is 230 I had it at 300 but it made the wobbly problem worse, just had a mate sit in while I drove him around on lfs and if I push down on the front slightly the problem goes away, I think maybe it just wants more weight over the front

Do you think if I attach the levers closer to the pedals it would help?

Ok so either increase the c2c or decrease the pivot length should potentially stop the wobbles

Ok so I moved it one hole on the c2c to make it longer and upped the kp to 400 and its better, if you lean forward in the rig the wobble fully goes away

Hey,
weird, I can't move mine at all. Being it powered on or not I just can't move it, there's a little play due to the gearbox, but I'm talking about 1-2 mm.

Yeah ok interesting, haven't had a chance the past week to get much done, but will continue on shortly, thanks for the reply mate

Hmmm still having this stupid issue with spongy motors, any ideas what the hell could be causing it??

Grabbed a copy of simtools 3 and pro license
And was in the middle of setting up a profile in assetto but this is pointless at this stage due to the constant rocking from side to side because of the sponge around center,

I'm lost, I don't know how to fix it