Dynafit radical ST DIN

Hey, I'm struggling a little to understand what it is exactly that you're asking. But I think you're asking about how much of a gap there should be between the back of the boot and the heel piece. If you're not and I just got myself confused please say.

There should be 5mm between the back of your boot and the heel piece, and you can set this using the piece of plastic that comes in the box with your bindings. It's crucial you get this distance right because the pins act as levers and thus affect the value of your safety release. The gap also allows the ski to flex underfoot. So if the gap is too small and you trigger a release when the ski is flexed quite considerably, then your boot and heel piece can become trapped together, so preventing release. Conversely if the gap is too big the boot can come unclipped whilst the ski is being flexed.

Hopefully this helps, if any part of this seems confusing or you don't understand how to adjust your bindings please pay the £$€¥ and get a shop tech to do it for you.

Feel free to pm me with any further questions, Joey

5,5mm is correct. The bindings should come with a spacer for this. (at least mine did. Both of them) IIRC this distance may change a little bit once you have stepped in and out a few times; you may have to fine adjust one final time. You should be able to sort this at home before skiing.

If the gap is too big, you are more likely to prerelease. If it is too tight, you risk staying in during a nasty fall.
For most people, sticking to 5.5 is recommended.

Start at 6 like yoy said, ski 'low risk' and slowly increase aggression until you reach your limit or you prerelease/up the DIN/repeat.

Both answers are helpfull. I probably mixed both my questions to much. I was asking about both, the gap between boot/heel and DIN settings and prettymuch got answers for both. :D

Thanks!