We shook the car down with a transversely mounted chain-driven ZZR-1100. The package
looked beautiful (the picture doesn't do it justice) and worked well but, with space at a premium, the engine was difficult to work
We were using
what we now appreciate was an overly complex drive-train - a short primary
chain taking the drive to an intermediate shaft, where a secondary chain
drove the centrally mounted diff.
We expected too much of the primary
chain which, despite our TLC, objected by stretching and breaking the more we
asked of it. At each round we were spending valuable set-up time tending to the primary chain.
Mid-season, we decided to cut our losses and rebuild the back-end of the car from the engine firewall back.
We were back in action after
only 5 weeks, with a completely re-packaged rear-end.
The engine is now mounted
in-line with drive taken via a mandatory reverse gearbox to a Sierra
differential, forming the load-bearing sandwich in the new suspension module.
As always happens in these situations, no sooner had we revamped the back of the car than we found a simple tweak to remove our chain woes.
The aluminium module which tied
the original back-end together so effectively is about to be resurrected. You may
well see a chain-driven chassis on the track again this season.
The front of the car remains
unchanged. Extra-long lower wishbones minimise camber change, while our
patented passive suspension endows the car with massive grip under braking, and compliance
over the bumps.
How many other cars have you
seen keep all four wheels on the ground through Cadwell's hairpin?