what do they all do?
I'm returning to outdoor 1/10th touring car racing with my tamiya ta04-r. In the past I ended up using a front one-way diff, and centre 'spool'? I think - it was a solid shaft ie no diff action; and normal ball rear diff.
I only used them cos that what other racers said to do. So after a long layoff I'm thinking of going back to all 3 original diffs and starting again. So can anyone tell me in simple language what's what, and why I should change diffs?