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MND group

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#1 vons

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Posted 22 January 2016 - 11:07 AM

Well its the first info I have seen on MND's detachable product
http://www.mnd-group...rayables_FR.pdf
Thanks to our french counterparts for finding the info
http://www.remontees...20

Interesting to note the grip uses a linkage that moves the springs to unload them, so it is both a two position grip and should have low opening forces.

#2 Peter

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Posted 22 January 2016 - 01:48 PM

Very interesting. I translated the press release and put my take on my blog: http://liftblog.com/...duct-this-year/
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#3 Lift Dinosaur

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Posted 22 January 2016 - 02:04 PM

Good job, Peter. Thanks-
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#4 vons

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Posted 15 April 2016 - 04:02 PM

The grip and chair. As seen at Mountain Planet. Photos from RM, Funivie and various twitter feeds of the event.

The chair
Attached File  Cf-9dsFWIAExtud.jpg (293.11K)
Number of downloads: 133Attached File  ch1.jpg (78.3K)
Number of downloads: 200Attached File  ch2.jpg (72.82K)
Number of downloads: 196Attached File  ch3.jpg (46.32K)
Number of downloads: 176Attached File  mndc1.jpg (160.98K)
Number of downloads: 195

The new over center grip designed for up to 6/8 place gondolas 4/6 seat chairs according to the spec sheet photographed (not shown)
Attached File  mndg1.jpg (169.39K)
Number of downloads: 225Attached File  mndg2.jpg (138.76K)
Number of downloads: 231Attached File  mndg3.jpg (162.34K)
Number of downloads: 234Attached File  mndg4.jpg (162.09K)
Number of downloads: 173

#5 julestheshiba

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Posted 16 April 2016 - 06:45 AM

Those seats don't look particularly comfortable.
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#6 vons

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Posted 18 April 2016 - 08:43 AM

video of grip action
https://www.youtube....h?v=K32vqvKMGj4

#7 liftmech

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Posted 18 April 2016 - 11:21 AM

The fact that one guy can open the grip makes me a bit nervous. What happens if something jolts the grip on line? On the plus side it'll go through the terminal much easier.
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#8 Mike12164

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Posted 18 April 2016 - 11:42 AM

View Postliftmech, on 18 April 2016 - 11:21 AM, said:

The fact that one guy can open the grip makes me a bit nervous. What happens if something jolts the grip on line? On the plus side it'll go through the terminal much easier.


The guy was opening it with one hand with what appeared to be little effort by the end of the video, perhaps this is a demo model with much weaker mechanisms for the purpose of easily showing how it opens and closes...

#9 Sacdelic_Skier

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Posted 18 April 2016 - 12:06 PM

in the video it looked as if the springs did not move. maybe the springs were not tensioned
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#10 vons

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Posted 18 April 2016 - 03:18 PM

The design loads the springs only when a rope is in the jaws, the BMF/Wopfner grip that has been in service for some time has the same feature in that it too can be manipulated when it is not on the rope. When this grip is online it will still require a substantial amount of force to open so inadvertent jolts should not be an issue.

Video of a BMF grip in service being hand manipulated at around the 20-30 seconds for compairison.
https://www.youtube....h?v=fTYF66kwLeo

#11 snoloco

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Posted 18 April 2016 - 05:00 PM

At first glance, it looks as flimsy as the faulty Yan grips. How can the springs only be loaded if the rope is in the grip?

#12 backyard lift

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Posted 19 April 2016 - 12:34 AM

Think of the mechanics of a vise grip. When the jaw is not loaded, the various pivots are loose. The Wopfner grip is similar. When snapped over center the jaws are locked. It does require a very interesting (and somewhat noisy) grip actuation rail-almost a tunnel!

Having said that, the MND grip looks quite different in the video at the tradeshow above. It does not look like the grip was actually moved over center by the person operating it by hand.

This post has been edited by backyard lift: 19 April 2016 - 12:39 AM


#13 vons

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Posted 19 April 2016 - 04:18 PM

The over center action occurs with the spring/actuating arm linkage so when the grip is closed the compressed springs force the actuating arm (black lever with roller) to pivot toward the rope onto a stop.

#14 backyard lift

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Posted 19 April 2016 - 11:38 PM

OK, see that now-thanks!





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