The hubs as per title are having freeplay to the extend the steering linkages having too little clearance from the front tyres.

This subsequently causes the steering linkages rubbing against the sidewall of the front tyres especially when the wheels are being steered.

The rear part of the steering linkage along with the axle towball constantly getting dislodged from Block 2X2, #1 (72008), I have lost one towball and one link.

I'd appreciate to hear suggestion of countermeasure.

First off, the mods will probably tell you tht this should not be a separate thread but in the dedicated thread for 42160.

Second, what are you driving this with? Original technic hub/batteries or is this a Buwizz3 mod? Your wheel hub seems pretty worn, with plastic dust on first image? That's why there's much freeplay maybe? Do you remember if it touched when it was not worn out? Though true that it was probably close enough to start with..

1 hour ago, New_User said:

I'd appreciate to hear suggestion of countermeasure. 

Put tape over the axle hole, then push the ball with axle in it. You can do this with the pinholes too. It wont stop the tire rubbing, but it will stop the pins coming out and keep the links on a lot lot better. Also, maybe use wd40 BRAND ptfe spray to lubricate moving parts, not generic everything spray, that stuff eats plastic.

1 hour ago, gyenesvi said:

First off, the mods will probably tell you tht this should not be a separate thread but in the dedicated thread for 42160.

Second, what are you driving this with? Original technic hub/batteries or is this a Buwizz3 mod? Your wheel hub seems pretty worn, with plastic dust on first image? That's why there's much freeplay maybe? Do you remember if it touched when it was not worn out? Though true that it was probably close enough to start with..

My apologies this is not part of the thread specified for 42160. I actually intended to have a thread more towards the wheel hub and I understand 42160 is not the only model using this specific wheel hub, and the linkage and wheel clearance is most likely due to the freeplay of the wheel hub. 

The model is driven by 4 units of 5292 motors.

From my observation, the clearance has been gradually decreasing, which is inversely proportional to the freeplay of the wheel hubs.

1 hour ago, Aurorasaurus said:

Put tape over the axle hole, then push the ball with axle in it. You can do this with the pinholes too. It wont stop the tire rubbing, but it will stop the pins coming out and keep the links on a lot lot better. Also, maybe use wd40 BRAND ptfe spray to lubricate moving parts, not generic everything spray, that stuff eats plastic.

Thanks for the suggestion. Never thought of this, going to give it a try. Not using the WD-40 anti-rust spray, it's bad for ABS, tried PTFE paste, noticeably decreased resistance.

 

 

Below are photos of the tyres with worn sidewall and more close-up view of the hub :

Take Your family car to rally ;)

This has had shopping, and school runs within building's concrete and tiles flooring only. Never been outdoor as I am aware Lego is not meant to be played outdoor.

Try turning the tire/rim around. From my experience they are not totally symmetrical. Also check sure you steering racks are properly alligned so they are not pushing more into one side than other.

7 hours ago, New_User said:

I actually intended to have a thread more towards the wheel hub and I understand 42160 is not the only model using this specific wheel hub

In that case maybe the Generic Part Discussion thread :) Anyways, fine with me..

Quote

The model is driven by 4 units of 5292 motors.

Well, that's the root cause of the problem then :) That's a lot of power for the plastic. Probably greasing / lubricating would slow down the process of eroding the components and building up the freeplay, but I guess it would not prevent it totally.

14 hours ago, Zerobricks said:

Try turning the tire/rim around. From my experience they are not totally symmetrical. Also check sure you steering racks are properly alligned so they are not pushing more into one side than other.

Thanks for the suggestion. Have tried swapping all 4 tyres around and from inside to outside, symptom persist, there is now two tyres damaged on both left and right side.

13 hours ago, gyenesvi said:

In that case maybe the Generic Part Discussion thread :) Anyways, fine with me..

Well, that's the root cause of the problem then :) That's a lot of power for the plastic. Probably greasing / lubricating would slow down the process of eroding the components and building up the freeplay, but I guess it would not prevent it totally.

Noted on that. Admin please feel free to move the topic to the correct channel.

 

Bought this set because of the hub, and Lego gave me the impression that we finally have the right wheel hub for a RC.

5282 motor's no load speed at high-speed output axle is around 1,700 r.p.m., with direct connection to the differential, maximum revolution to the wheel hub is going to be way less than 1,000 r.p.m., probably this is too fast for even Lego's own 5282 motor.

The front hubs are more resistive than the rears when the hub's input center axis is offset from the differential's output center axis, and this is made worse when it's steered.

If there is a way to change the geometry of the connection between the front wheels and the suspension linkages, at least further damage to the tyres can be avoided.