Originally Posted by kiwiski
I know of a 30+ year old adult here who is using standard (adult) boots with junior bindings on their skis. The DIN range is acceptable but I was under the impression that the difference between junior boots and adult boots is that the toe and heel lugs the bindings grab on to are smaller in size for the junior boots and that junior bindings are designed for those smaller size lugs. I know adult boots can be jammed into junior bindings, but is this likely to compromise the performance of the binding and/or increase the chance of breakage?
What is your verdict on this?
The appropriate poll response would be "Depends..."
The majority of today's junior bindings accept both Junior and Adult ISO standard lugs. A couple don't. If it fits and the skier successfully gets down the hill with it, it probably is designed for both.
The reason they are designed for both is so that 75lb kids wearing 22.5 ski boots (or 25.5, or whatever) can use junior bindings, making Ma and Pa's ski trading easier, and more importantly reducing liability for the manufacturer stemming from Joe Idiot shop employee selling a Jr binding to a kid with a 22.5 adult boot.
Reasons it ain't particularly great for an adult, even if the DIN range is OK:
- Elastic travel with the adult boot in it is about nil. So any torque greater than the release value will cause near instant release.
- Packaged with shorter screws for thinner Junior skis. More chance of pulling binding out of ski. Probably not an issue for anyone that would be doing this anyways.
- Cheesier and more prone to breakage, in general.
- Forward pressure spring is always weaker than adult binding, which means that pre release if the ski bends is more likely.