Live Axle Discussion

[MrNumbskull13]

Yes, I really like it but;

I don't own any cv joints or portal hubs (I use custom portal hubs)

The wheels I use are a bit smaller than the unimog ones.

Is it still possible to make a kingpin inclination with universal joints and custom hubs?

[nicjasno]

Of course. It'll be a bit bulkier perhaps. Just remember to have the center of the universal joint on the axis that goes from the top pivot to the bottom one. If projected to the ground, the pivot point should be ideally on the edge of the tire or slightly inside of it.

Edited January 3, 2014 by nicjasno

[MrNumbskull13]

Thanks! I'm gonna have a go at it.

[z3_2drive]

When making High speed builds, such as my cars that get to about 10-12 mph, complex geometry helps a lot! Positive caster is an absolute must, and camber+toe-in/out also affect the handling greatly. But when building such high speed cars you need to sacrifice geometry for a robust setup, so I usually incorporate positive caster and sometimes negative camber.

[Thirdwigg]

This is what I have for front steering for a super car. Positive Caster, Kingpin Inclination, and decreasing camber through suspension travel. Still needs some polishing, but the basics are there.

I guess you could run a drive axle through it with a CV Joint to help with the change in drive shaft length, though I have not tried it.

Edited January 3, 2014 by Thirdwigg

[nicjasno]

That is not a good wheel hub. Much too bulky. Use 4x2 L liftarms and have the steering link connected to a connector to those liftarms.

I do however like your use of the 6L and 6.5L suspension links.

In order to avoid bump steer you will have to have the 6L steering link as close and paralel to the upper 6L link as possible.

[Technyk32231]

I'm trying to make a driven and steered live axle that has kingpin inclination to be used with 62.4 wheels. Does anyone have any suggestions or ideas? I have no CV joints, so I have to use universal joints.

[Thirdwigg]

That is not a good wheel hub. Much too bulky. Use 4x2 L liftarms and have the steering link connected to a connector to those liftarms.

I do however like your use of the 6L and 6.5L suspension links.

In order to avoid bump steer you will have to have the 6L steering link as close and paralel to the upper 6L link as possible.

Version 2.0 is a little cleaner. The motor is in the way to have the 6L Steering link and rack mounted as high as the top liftarm. I'll see what I can do.

I can't get a 4x2 L liftarm to mount the steering to the hub as the bottom Double Pin with axle hole keeps my connecting part options limited.

[pigpen]

Just an Idea while at work, adjustable camber that could be adapted for steering axles plus 4WD. might not be that strong in some applications but the principle is there.

[nicjasno]

I certanly would not adjust camber like that :) Nice concept, but not good when applied to a model.

[Technyk32231]

Just an Idea while at work, adjustable camber that could be adapted for steering axles plus 4WD. might not be that strong in some applications but the principle is there.

Great idea, but this is the live axle discussion.