angle for front fork tube + 130-160mm travel for fork
Additionally there are things that you can't really measure:
- stronger frame
- bigger weight (mostly because of choosing stronger parts which mostly adds weight)
That is how I understand it :-)
Although I think that no one really knows the difference because it is all moving to one or other side as person prefers his bike build As far as I can tell by people comments then overall standards are:
XC - >68 for angle, <130mm fork travel
AM - 66<68 for angle, 130-160mm fork travel
DH - <66 for angle, > 150mm fork travel
or in other words - if it does not seem to be XC and it does not seem to be full DH, then it is AM
There is no man living that can not do more than he thinks he can. Henry Ford
What about wheels on the ground vs off the ground and height of drops/air?
XC is mainly going to be on the ground (built to be light, not take big drops), AM some drops/air but less than DH. I have no clue on reasonable numbers. My lbs appears to think 2ft drops is where you should be considering AM over XC.
My AM does have the slacker head angle, but an adjustable fork so I can drop it and get a steeper angle for riding that is closer to XC. Works well for climbs. Less wandering.