DMM Impact Block Configurations

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whats the load rating on the center spindle?

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The hollow spindle is an integral part of the block and is therefore "fully rated". The Working Load Limit of the large Impact Block is 60kN. When using more than one rope, the sum of forces on the hollow load spindle must not exceed the WLL.
 
I would really like to see the shieve and spindle used in concert in a lowering/rigging scenario or possibly floating. It's good footage but maybe I'm missing something.
 
WOW! Great video Taylor, you do a fantastic job of helping with visualizing the many uses of these innovative tools. Personally, I think this vid is the best one yet.

One thing I would love to see is a small block with the hollow spindle. I think many of these floating anchor or control line situations that make the hollow spindle so useful would be more likely with branch wood, where a smaller block would be more convenient. Just a thought.
 
Taylor, you know I love ya, right?

Another excellent DMM product, might well turn out to be the champ of all rigging blocks!

You make very clear and concise videos....another Jerry B perhaps.

The content of this one, some I liked, some I didn't.

Are you a treemaginer now, or DMM or tuffel or what? Hope you dont mind me asking. Thanks
 
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Are you a treemaginer now, or DMM or tuffel or what? Hope you dont mind me asking. Thanks

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He could tell you but then he would have to kill you
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Ha

Just saying it would be cool to have a USA treemagineer team...
 
Thank you for the comments, everyone!

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Taylor, you know I love ya, right?

Another excellent DMM product, might well turn out to be the champ of all rigging blocks!

You make very clear and concise videos....another Jerry B perhaps.

The content of this one, some I liked, some I didn't.

Are you a treemaginer now, or DMM or tuffel or what? Hope you dont mind me asking. Thanks

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Thanks Reg... I love you too!
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And, all kidding aside... I value your insights.

I am always open to comments, opinions, and critiques. The videos, and work scenarios they capture, are certainly not perfect... I wish they could be!

No, I am not a Treemagineer. I don't think they have any open positions! Nor am I an employee of DMM or Teufelberger.
 
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I am always open to comments, opinions, and critiques. The videos, and work scenarios they capture, are certainly not perfect... I wish they could be!


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On here or pm?

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No, I am not a Treemagineer. I don't think they have any open positions! Nor am I an employee of DMM or Teufelberger

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Fair enough, with your hands-on skills and a name like Taylor Hamel you dont need a fancy title anyhow....but I do hope those boys are looking after you for the work you're putting in.
 
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Awesome video Taylor! If you need any more "help" Let me know - maybe next time I can run the ropes smoother for you!

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Oh yeah, sorry Jason. I should mention that Jason and the City of Woodbury provided two locations for filming and one lightning struck cottonwood!
 
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I am always open to comments, opinions, and critiques. The videos, and work scenarios they capture, are certainly not perfect... I wish they could be!





On here or pm?

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Keep it public, Reg. Go for it! I won't whine.
 
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On here or pm?

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Keep it public, Reg. Go for it! I won't whine.

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Ok Taylor. With respect, I know a little about product placement on videos and photos etc but I think you guys could be a little more subtle of late. Just a couple of recent examples:

http://www.treebuzz.com/forum/showflat.php?Cat=0&Number=266880&page=4&fpart=1&vc=1

http://www.treebuzz.com/forum/showflat.php?Cat=0&Number=272858&an=0&page=0#272858

Pot calling the kettle black, perhaps....ok guilty of that myself many times over....but the mere suggestion that I need one DMM pulley + DMM Karabiner to lower another DMM pulley out of a tree is just too much, even by my low standards.

Hopefully moving on from that.
The profile on the impact block is a thing of beauty....such curves are long overdue for critical hardware of this purpose, not to mention the WLL. You already sold it to me right there.

The hollow in the big block is a nice touch also, I’ve seen that kind of thing only previously in sailing pulleys etc. Of course I can set up the same floating configurations by attaching my pull lines to the sling instead of the block....but yours still looks a little slicker and less cluttered.

The traverse (speed-line) set up. Apart from needing one less pulley/sling, there’s no real advantage of running both lines through the same block, right? I personally try to separate the lines by at least a foot so they’re are less likely to get crossed over on the way down or back up.

You had a couple of logs double tied, a control line running through the hollow of the big block, which was also used to redirect the primary line over its pulley and then up to the PRP and back down again onto the log.

The sequence in the video clearly worked to plan....but I couldn’t help notice the huge distance you allowed between the big block and where the control line was ultimately tied off. So that log has the potential to shift twice that distance towards the tree/climber when it comes off the stump. I know it didn’t come into play in your examples because your primary rigging line must have been tied off either in-line or inside the rigging point up above, which would cause it to swing away as opposed to towards....but if your line was tied off outside the high rigging-point then the log would do the exact opposite, the extent and sometimes violence of which obviously depends on the size of the limb and just how far out you tie-off the primary rigging line along the limb.

Now you, I and probably most of the members on this site are well aware of that scenario, but on youtube in general, who knows what and how much might be taken for granted. Of course you could say that for a whole bunch of video on there, but this one I think carries a little more responsibility seems as it is actively promoting a real product and respective methodology. I mention this only because I want you to cover your back brother.

FWiW, when using the same technique I always taken the time to explain to the guys why I’ve placed the block as absolutely close the tie-off as is safe to do so, and make sure I’m the hell out of the way when it falls off the stump (see attachment).
Look at all this $hit I’ve written already, boy you can tell Juliet it out tonight!
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The traverse (speed-line) set up. Apart from needing one less pulley/sling, there’s no real advantage of running both lines through the same block, right? I personally try to separate the lines by at least a foot so they’re are less likely to get crossed over on the way down or back up.

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I will say that using one less pulley and sling is reason enough. However, having used the block in this configuration a few times now, the lines work together very well. You can "cheat" the block by using the spindle to keep it in a certain attitude. In the cottonwood, I chose to pass the speedline through the spindle and then anchor it just a short distance below the block on the stem. (We were using a GRCS on the downhill side to tension.) This kept the ropes running quite fair and I prefer to keep the block in this attitude as we were using Hitch Climber pulleys for the trolley and the haul line needs to run below or to the side of the speedline in order to connect to the HC. If you terminate the speedline directly to the spindle, then using a top connection (such as the PINTO becket) is more appropriate to avoid rope twist and crossover. Another wonderful configuration is to use a doubled speedline through the spindle (if you have enough rope and need the strength or tension or whatever). These observations are based on my limited experience with the block at this point and speedlines in general. A particular configuration may very well be better off with a separate pulley.

The pieces that were secured with the tagline/control line were indeed rigged with the primary line and rigging point pulling the pieces away from the climber. The original plan was to take the limb in one piece rather than two. While setting the rigging and inspecting the crown, I changed my mind! The brush piece needed to be cranked up quite a distance to clear the house and the tagline was really just a little extra insurance. On the butt piece, I definitely wanted the tagline due to the proximity of the fence. I agree that when the butt will come toward the climber or structure, the shortest distance possible between block and tie off is imperative.

I don't know what to say about posting vids on YouTube. Clearly, there are videos marketed as "How To" that are scary to watch. I've noticed that when you don't choose a category for a vid, it defaults to "How To and Style". Maybe misleading? The videos I make are not "Training Videos" and I don't believe your's are either. However, some nut could watch a vid and decide to cut a tree down... with or without products being highlighted. That's a tough one. If I stated in the vid, "Only tighten the anchor pin half way", or "Tie a Timber Hitch using only two wraps", that would definitely be a serious problem.

Cheers, Reg! As I said before, I appreciate and value your input.
 
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These observations are based on my limited experience with the block at this point

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Seems as I have non whatsoever, I will give you the benefit of the doubt. Keep up the good work
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