Meidjo Release, Maybe, Maybe NOT

[Manney]

More flex = more pressure on BoF. More pressure on BoF, more pressure on binding. More pressure on binding, harder pin grip. Harder pin grip. Harder for being to release. At least that’s how I read the points made on BCT.

[Manney]

No apology needed.

The ROM affects binding release. More pressure on toe, harder the pins engage. Not my idea… result of testing on BCT.

So… your binding didn’t release. We now know that M3.0 releasability higher than ppl may realize… compared to DIN (which we’re all familiar with). Binding in walk mode drives release point higher. So does boot, when in walking mode… due to downward pressure on toe, pins.

Lots going on. Big take always for me as I think about M3.0 in the future… tension low, binding, boot in ski mode when skiing. Only walk mode when touring. No exceptions. My tolerance for more injury low tho… having gone thru something similar… not fib, but acl, mcl.

Perfect storm is when tension is high, boot, binding in walk mode. To be avoided… no matter how good we think we are. Crud, clutter only raises possibility of catastrophe.

No it does not. Lifting the heel, or the duckbutt affect release. Skiing with the boot in walk mode does not effect the mechanics of release. Now if you ended up being in the back seat because the boot cuff didn’t hold you forward, and the tail levered an ACL, or MCL and caused ligament damage, that could possibly be caused by skiing with a boot in tour mode. That is not we are talking about.
Now Manny, you made a comment about LAA being old, like that made his comments of less value. I’m a little older too. We talk straight.
I really think you grew up earning participation trophies. You seem to believe we should cheer your inane comments. It’s pretty obvious you are not an experienced Telemark skier. However you are pretty good with a search engine.
Might I suggest tennis? I don’t play tennis, and while I would miss your posts on the tennis forum, I think I’ll get through it just fine.

https://www.backcountrytalk.com/forum/b ... post122813

”Another problem is that the std 2 pin binding uses downward pressure to hold the pins closes. if you look at the geometry, the pins are slightly inward of the wing pivots. That means with boot in, as you press down, you close the wings tighter. So that causes variation in release with heel down. not as big a deal as AT, but for tele, the more active the binding the more of an issue it could be. But this is a bigger deal as the heel rises. that increased forward pressure now has a downward component which acts to hold the boot in the toe.”

With your age, weight, fitness, and interest in assembling your own custom binding parts… my guess is that you’ll be posting a crash report in the next year or two. Tennis? You won’t even be fit for pickle ball. LOL.

[fisheater]

I read your above post, what does that have to do with a boot in walk mode???
As for my fitness level, you have no idea of my fitness level.

However as for your knowledge of Telemark skiing your above post is indicative of your lack of understanding

[Manney]

You need to go to BCT… sort jasonq out.

https://www.backcountrytalk.com/forum/b ... post122814

Watching for your comments to set everyone straight… it will be fun.

[lowangle al]

You're the one that needs straightening out, they've already called you stupid over there.

[Manney]

Didn’t think you’d have the balls to go to BCT and start schooling jasonq.

[jtb]

I'm not getting involved in the ad hominems, just here to say that boots in walk mode would decrease downward pressure on the toes due to a shorter and more flexible lever compared to the long, solid lever from leg to toe in ski mode. This is fairly obvious if you ski telemark turns with cuff locked and then unlocked... unlocked makes it harder to generate force on the uphill ski, requires more leg strength, causes chattering edges, etc.

[Manney]

Yeah but you still have weight shift thru the BoF.

Easy to focus on boot angle in ski mode… easy to dismiss skier weight, weight balance, which doesn’t magically disappear when the boot is in walk mode.

Less than, sure. But still additional downward pressure to drive the pins inward. Weight is weight. Keep in mind we’re looking for a logical explanation for why the binding didn’t release.

Like to hear jasonq’s view too. He was the guy doing the test, elaborating on how the binding works in such situations.

[Stephen]

For anyone that cares, it is true that downward pressure on the front of the boot (down pressure on the toe pins, and with the toe in ski mode, that is, unlocked) will make it more difficult to rotate the heel of the boot out of the duckbutt (because to rotate the heel out, the pins have to open).
I think this is an important factor to consider when thinking about the reliability of release for the Meidjo binding.

Uh uh. I know what you're thinking. "Did he fire six shots or only five?" Well to tell you the truth in all this excitement I kinda lost track myself. But being this is a .44 Magnum, the most powerful handgun in the world and would blow your head clean off, you've gotta ask yourself one question: "Do I feel lucky?" Well, do ya, punk?

Think of force vectors. The pins will never release from the boot toe dimples with strictly down force — the boot toe support of the binding prohibits that.
The boot will fairly easily release from the toe with upward pressure. Has happened to me more than once with snow icing under BOF slowly building up until it raises the boot toe enough to pop out of the toe unexpectedly. As the force vector line rotates from 0* down to 180* up release from the toe pins becomes easier and easier.

So, if the binding tests to an equivalent of say a DIN of 9 in a pure horizontal release test (90* force vector, with no down pressure on the toe), then, with down pressure on the toe (maybe a forward, twisting fall), the release value will be higher (even more so if that forward twisting fall also raises the heel of the boot).

[Manney]

YES!. This makes sense. Explains why the binding didn’t release.

It doesn’t matter how the additional pressure reaches the toe… more from a boot in ski mode, less in walk mode. Either way, it’s an additional force driving the pins. Makes binding harder to release.