trado/walking beam/boomerang

[Hanno Spoelstra]

Originally posted by ericnuyt
But what is it? What's a walking beam? Is it similar to the Trado?
How does this work?

Nuyt, see http://freespace.virgin.net/scammell.man/history.html for an animation of the huge axle articulation available from Scammell's walking-beam rear suspension design.
I don't know which was there first, Scammell's walking-beam suspension or the Trado conversion. It is much the same with Marmon-Herrington's all-wheel drive conversion; someone thought it up, after which it was copied by others, or did several engineers design similar constructions independently of each other? We know that is how the wheel was invented...

Relating the Engesa Cascavel to the DAF M39 is stretching it a bit too much, I think.

H.