Originally Posted by doublediamond223
What is the correct way to set forward pressure? I set mine as tight as it can go while still allowing me to step in. I raise it a click with the boot out, put it in, then pull it out and tighten it until I can't put the boot in any more. The bindings (various Atomic race and Marker 1400) release when they need to and don't often pre-release. Din is 11-13. Is this technically correct?
For a variety of reasons, thats not really a good way of doing things.
Springs tend to not do their job well if they are binding. From the sound of it, you may be forcing the springs to bind. This limits the flex of the ski...the heelpiece has to move as the ski flexes (in most designs anyways) and you may already have it jammed as far back as it will travel on the forward pressure (usually a pair of 'em) springs. This is probably inconsequential if this is on race skis with plates that float.
As others have mentioned, the methods for setting forward pressure vary by manufacturer, model, and the attitude of the guy who wrote the tech manual that year. Various different systems exist. The bindings you are working with are the best, with a worm gear terminated in a pozi head to move the heelpiece forward and backward on some sort of metal track.
The safety hazard is that when the ski is flexed, instead of the engineered amount of force holding your boot against the toe and heelpiece being limited by the forward pressure spring, the flex of your ski may be slamming toe and heel together with far more force. Yeah, it probably won't prerelease when you nail a hole at a gate under a lot of load.
If you had too little FP, the opposite problem would occur. When the ski isn't flexed or when it flexes "the wrong way" violently (as they do when crossing chattermarks at speed) the forward pressure spring will run out of travel at the forward end of its range and the amount of force holding your boot in place drops to nil. Bad situation.
Being the decidedly not graceful or light kid, I have a lot of experience with bindings coming off my feet at inopportune times. I've never found the "two extra clicks past flush" to do a damn bit of good, but then again I do adjust my own bindings that way when I set them up. Kinda like a Spinal Tap amp going to 11 deal I suppose.
Bindings bend and twist and flex in so many different ways that its very hard to figure out just whats going on and how to make it better. The ski makes a difference too. I can ski all day on a plated race ski with a Salomon retail binding set at 9 or 10, but put a 912Ti on some modern ski that flexes and I can't stay in for the life of me, regardless of settings.
Put an Axial or FKS binding on just about anything, set it somewhere above 8, and I'll never come out of that either. Just for fun I set my race binders at 9 last year and didn't come out once. The one time I did come out was upon crossing an ugly hole at a bad angle with some FKS that were actually at 12.5. Ripped my leg so hard that my ankle hurt for days. I would have much preferred to have that binding set lower...would have likely hurt less.