I think i can recall a test of the "lead" for the FWA of the JD8100 I owned. Measure a set number of wheel revolutions of the front tyre, with the FWA NOT engaged. Return to the starting spot, engage FWA and drive the same line, for the same number of wheel revolutions. The distance should be less by about 1.5% [if I recall correctly]. This makes the front tyres 'work' trying to pull the rear end. I am pretty sure that 1.5% eliminated any tendency to develop bounce or 'power hop'. Final comment, if your tractor is pulling anything, not just rolling along, FWA is more efficient! Without them pulling, they are being pushed as a dead weight by the rear wheels. |