Hi Fretka,
sorry for the delay but I just wanted to be sure before stating something. Regarding F1 boxes, your description is accurate, and makes me wonder how you know so much. This is not a field in which many people know what they are talking about, not because it's complicated, just because there aren't many guys working on it, and they are mainly in Europe. Even the japanese teams are based here, either in England or in Germany. Let me just state that, at the risk of looking that I'm trying to show off, I have the luck to work with the people actually designing them.
Anyway, one of the differences between bike gearboxes and F1 cars gearboxes is how the gear teeth are oiled. In both cases, the rolling bearings are, indeed, oiled with channels running inside the secondary shaft. The reason why an oil bath is not used on a F1 car (or motorcycles) gearbox is simple: if the gears have to dip their teeth up to the meshing line (and at 22000 rpm in the case of F1 car engines) in oil, they are robbing too much power. "Too much" being about 2 HP (out of typically 800) and that, in F1, is a lot. Specially because by precisely applying tiny doses of oil to the teeth (with a device not entirely different from the common rail used in Diesel injection, just a much lower pressure) one can achieve the same lubrication, so this is what F1 cars use. The oil amount in the gearbox casing that one can collect at the end of the race is probably smaller than a small measure of whisky. However, the worst thing that happens is not those 2 HP lost, but the foam that the oil is turned into and hinders the pump's work, heat exchange and what not. Hence the injectors, to limit the amount of oil in the casing, and the careful design of the bottom of that casing to collect the oil and direct it to the reservoir. Another reason is that the oil in the gearbox is separated from the oil in the engine, unlike most bikes (bar the boxer engines from BMW, for example).
In bikes, the gears still get lubricated by the oil sprayed in the casing, not any injection, and underneath the gear cluster the oil gets collected. I have no clue how this is achieved in the C14, but I take your word for it and asume there is some sort of injection; however, I'll keep looking into it.
PS: your disclaimer about HDs was unnecessary. Unless your definition of "motorcycle" is very, veeeery broad...
PS2: an F1 diff is just a normal spur gear diff, except that it should desintegrate after 4 weekends (about 2000 miles). If it lasts longer, it was too heavy!!!
