So when I modify the tire/wheel, there is a field for wheel_offset. Which makes perfect sense. The wheel center is a design position on the intersection between the spin axis and the mating surface where the wheel is bolted on. On this design, different wheels can be used with different offsets. That will among other things change the scrub radius. The problems are This parameter is not used by anything. Changing it does not move the tire in or out. Using the suspension testrig, there is nowhere to set this parameter. As this is using a testrig tire that does not expose this parameter. I can change it by manually search for this variable and change it. But it looks like an oversight. And it does not change the scrub radius or anything else in the simulation OK, it is easy to fix for the full vehicle tire template, but it seems wrong to me. Anyone else looked into this? @Martin Kieltsch you must have fixed this?

Wheel offset?

So when I modify the tire/wheel, there is a field for wheel_offset. Which makes perfect sense. The wheel center is a design position on the intersection between the spin axis and the mating surface where the wheel is bolted on. On this design, different wheels can be used with different offsets. That will among other things change the scrub radius.

The problems are

This parameter is not used by anything. Changing it does not move the tire in or out.
Using the suspension testrig, there is nowhere to set this parameter. As this is using a testrig tire that does not expose this parameter. I can change it by manually search for this variable and change it. But it looks like an oversight. And it does not change the scrub radius or anything else in the simulation

OK, it is easy to fix for the full vehicle tire template, but it seems wrong to me.

Anyone else looked into this? @Martin Kieltsch you must have fixed this?

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0 Martin Kieltsch over 7 years ago

Concerning the variable set by the wheel modify dbox:

.ACAR.macros.mac_tem_whe_smo is setting $wheel.center_offset

That's only used in $wheel.geo_ctr which is (according to database navigator) which is only used by "$wheel.wheel_hub.cm"

Just that there is no $wheel.wheel_hub.cm as wheel_hub is a cylinder and not a part.

Without digging deeper, I simply assume

that the intended behaviour was to move $wheel.cm and as a consequence it'd be bug.
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0 Martin Kieltsch over 7 years ago

Concerning the variable set by the wheel modify dbox:

.ACAR.macros.mac_tem_whe_smo is setting $wheel.center_offset

That's only used in $wheel.geo_ctr which is (according to database navigator) which is only used by "$wheel.wheel_hub.cm"

Just that there is no $wheel.wheel_hub.cm as wheel_hub is a cylinder and not a part.

Without digging deeper, I simply assume

that the intended behaviour was to move $wheel.cm and as a consequence it'd be bug.
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