There is a lot of misleading advice for cornering your mountain bike, often from top racers who aren’t actually doing what they say they are doing! Greg Minnaar and I got a kick out of Myles Rockwell’s announcing at the world championships a few years ago. Myles was talking about Greg’s “forward” riding style. Greg will tell you that he rides centered with all of his weight on the pedals (and this is a case of top racer actually doing what he says he is doing). He is “forward” of being “back on the bike”? Yes, but he is not “forward” of centered on his bike. (Myles is a great rider (world champion!) and super nice guy, no offense was meant by this post, this is an excellent example of top athletes not being the best at explaining things (because it is not their job!)).
This is a case of perception being distorted by “society”. In this case the 1980’s and 1990’s mountain biking “society” that was used to riders riding with their weight back (that, long stems, and narrow bars are why if you watch a downhill race video from 1995 or prior you will see tons of pro racers who look wobbly and out of control) created the expectation of seeing a rider in that weight back position, so when Greg (and Neko Mullay, Aaron Gwin, Rat Boy, etc.) rides centered he looks forward to riders expecting to see 1993 body position. This is because the rider’s head and chest are forward and low, but, their hips have scooted back, keeping them centered over the pedals. An important part of body position is “hinging at the hips” with a flat back. When you hinge your chest drops and goes forward as your hips go back so you stay centered. This puts you in a balanced, neutral and athletic position so you can respond to anything the trail throws at you, quickly and powerfully! It also lowers your center of gravity! Watch video of the world cups and notice how low Aaron Gwin, Steve Smith and Neko Mullay are. Like a sports car, getting low helps you stay centered (braking, cornering and acceleration forces have less effect on a lower rider and/or vehicle).
Focus on getting low! A great way to practice this is to ride straight down a smooth road and focus on hinging at the hip with a flat back and dropping your chest until you are in a half push-up position. Next make sure you have heavy feet and light hands (check if you are in the right position by loosening your grip and sliding your hands side to side on the grips, if your hands won’t move you are too far forward, if it feel like you are pulling up on the grips you are too far back). Once you are solid at doing this in a straight line focus on maintaining this low, centered (fore-aft) position while turning in both directions. Once you are consistent at this then try cornering on pavement with weight too far back, then too far forward, then centered again. You will feel that your bike feels lighter and takes less effort to change direction when you are centered. When are are consistent at all of the above, keep practicing until you can’t get it wrong! More on cornering!