/ BCA Alpine trekkers
They are known as day wreckers for a reason...For the odd tour they're fine, but definitely a pain in the arse for steep traverses and tricky 'tour to ski' transitions.
However, if I had to choose between the MFD and trekker, I would probably choose the trekker as it still leaves you with 100% solid alpine binding for the down. With the MFD, all of the torque gets transferred to the plate and pivot (which have been known to bend in several instances). Also, the MFD is very long so has a funny stride and can create a flat spot on the ski.
If you were considering MFD plates, have you thought about Salomon Guardians? (this is what I've ended up with as I don't trust anything made by Marker).
Speaking as someone who tries to avoid being an early adopter at all costs, I applaud folk like you willing to use a brand new and minimally tried'n'tested device and work out all of the various manufacturing defects and failure modes so they can be resolved in the next revision.
Marker's touring bindings are hardly perfect, but at least their issues are known ;-)
Me, I'd see about getting some binding inserts or swap plates fitted so you can whip off your alpine bindings and slap on a nice set of dynafits for touring. Bit more pricey than a set of Guardians, but the premium is well worth it.
If you have to go uphill for more than an hour, or on terrain steeper than 25/30degs then avoid them at all costs, spawn of the devil.
If you've got a half hour skin in a straight line up a 20deg slope they will function fine.
True enough about being a guinea pig, but for me personally I have eliminated all other options....
- Dynafit still only have low DIN bindings available (other than the Beast for next season which I'm not willing to part $1000 for, and I would be a guinea pig anyway).
- The design of the Duke has multiple flaws including weak plastic around the pivot where metal would prove stronger, a badly designed ski - tour lever that puts a huge amount of pressure on the centre screw in a tail heavy landing, as well as high stack height and sharp dildo to stab you in the arse in a crash.
- The Trekkers are somewhat inefficient to say the least, and whilst they are the only solution that give you a true alpine binding for descent, the amount at which they twist on steep slopes is somewhat worrying.
- The MFD has an inefficient pivot point and there have now been several warranty claims from twisted plates.
The Salomon and Atomic teams have been skiing the Guardian for the last few years and have not had any issues. There has been one known failure so far, but this is likely due to icing under the toe piece, and could be considered user error.
If, however, you are light enough (or ski smooth enough) to ski dynafits, then the swap plates / inserts make perfect sense.
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