Home THE TRIALS CAR Front End by Grant Campbell
See also THE TRIALS CAR Front End Struts etc
Click on an image for enlargement & further explanation


The Front End on my car is really what makes this car tick. When I built the first of this type of car I'd wanted something that would actually steer. At the time some cars had beam axles, ala Austin 7 and Ford 10. Others built by the likes of Dale Shaw & Barry Hudson used double wishbones. Although we all knew something of what I suppose is the current English design, like Syd Hirst's of NZ, nobody had done anything with them here. Certainly not with a rear engined car. The difference using a rear engine configuration like the VW meant that I was fairly limited in what I could achieve with the rear end travel so the next best thing was to get the front to do all the travelling. Right from the start I wanted to use components from very ordinary cars so spares wouldn't be a problem. I'd fixed the idea of a strut type in my mind, and after some seaching found that the KE30 type Corollas had pretty much all I needed. Cheap & plentiful.

Mr. Ackerman states that the inside front wheel must turn more than the outside to take account of the smaller radius described when turning. Back



While the 'Ackerman' principle is not strictly adhered to in a lot, if not most, modern cars, as manufacturers might take into account particular slip angles at various speeds & for various surfaces, it is important in a Trials car where incorrect angles can cause the front wheels to either slide or slow the car down simply because the wheels are fighting each other.
Click here for the next illustration, showing how to prove whether your ackerman angles are correct.