Re: Why Sliding block on racers

[Simon Favre <simon@xxxxxxxxxx>]

Exellent discussion. Very good points. Isn't another fault of the
trunnion (A-arm) system that it causes the rear of the car to dive
under acceleration and stick up under braking? The weight transfer
under braking and acceleration wants to make the car do this anyway,
and the rear suspension geometry on the 101/105/115 live axle cars
just aggravates it. Some of the more exotic Panhard rod setups I've
seen also included a much longer upper link to replace the trunnion.
It was just just a torque arm, having nothing to do with lateral
location. I have seen a lot more Panhard rods on racers than sliding 
blocks. The point about hanging greased parts out in the dirt stream
is a very serious one.

Point 1 is so obvious if you think about it, but so surprising if you
haven't.

Chris Prael wrote:
> 
> Will's, Simon's, and Richard's discussion of the properties and
> "correctness" of the various ways of locating is very interesting. I
> would like to bring up a few points that seems to have been missed.
> 
> 1. A live axel and a Dedion rear suspension are geometrically
> identical. They differ only in which mechanical components are attached
> to the chassis and which are not suspended.
> ... {SNIP}

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