Dmm impact block

[Matthew Burton]

That is one good looking bit of kit! Those guys at DMM have some finesse.

[Rupe]

Nice video, some good testing going on there they look like they are up to some serious stick.

 

One serious stick and lots of cameras!!

 

Sorry, cynical head on again Mark, I'll have a look at some soon before winging, but correct me if I'm wrong but that video was for a pulley for cutting trees down, right?

 

They do look nice though!

[Peter]

Enough poncing about with bits of wood, when are you going to drop a Volvo on one?

[SJH]

Enough poncing about with bits of wood, when are you going to drop a Volvo on one?

 

 

that sounds cool!

[Tommy_B]

That looks like my rigging!! haha!! I want one!!!

[scotspine1]

Mark,

 

the blocks look great, looks like a lot of work and ideas have gone into them, good luck with them

 

questions -

 

price?

 

at 2.25, if the rigging line had failed for whatever reason - would the adjacent tree with the climber have taken a massive shockload? much larger than the 'block' tree? was the experiment as safe as it could be? was there any real need to have climber in that tree other than for filming reasons?

 

What is the working load limit of 12mm Sirius 500?

 

Does Ian Mackaye know you used that song? he's a pretty laidback person on issues like that but its always nice to ask. Dischord threatened to sue X-Games for copying the front cover of Minor Threat's first album unless X Games withdrew all the promo posters etc?

 

Treemagineers? Trees Imagination Engineering

 

Just wondered what courses you guys have done in engineering? as I'd like to look into getting a basic grounding in the subject maybe at HNC level

 

 

cheers

 

Tim

[Rupe]

Thats me off the hook then, thanks Tim.

[Mark B.]

Tim,

 

the line was Sirius 16mm with a MBS of 5850 daN.

 

As you can see in the test set-up diagram in the video, the upper line, once it had been released from the vehicle had at least 40m to run freely. In case of a failure of the rigging line, this would have been sufficient for the test mass to hit the ground before shock loading the anchor trees. So, in a nutshell, no, there was no risk of this happening for the climber in the adjacent tree.

 

DMM will be announcing the price closer to the release date. One thing worth bearing in mind in regards to the price is this: If you look at the technical spec under this link:

 

http://dmmindustrial.com/downloads/DMM_Impact_Block_Flyer.pdf

 

... you'll see that the MBS of the blocks are pretty much exactly double that of other products out there. The reason this might be interesting is that all of a sudden you can do most of your rigging with one of the S Impact Blocks, changing to L for the truly humungous bits. So instead of having to buy two conventional pulley now you could make do with one.

 

Regards,

 

Mark.

[scotspine1]

Tim,

 

the line was Sirius 16mm with a MBS of 5850 daN.

 

Thought it said in the vid you used 12-16mm Sirius? must've been mistaken.

 

Anyway, at 2.37, what sling/setup is being used? interested to know as soon be time to renew a couple of our Yale rigging ropes, may consider buying teufelberger, what is the red and white rope and how does it differ from the blue one?

 

As you can see in the test set-up diagram in the video, the upper line, once it had been released from the vehicle had at least 40m to run freely. In case of a failure of the rigging line, this would have been sufficient for the test mass to hit the ground before shock loading the anchor trees. So, in a nutshell, no, there was no risk of this happening for the climber in the adjacent tree.

 

glad to hear it

 

http://dmmindustrial.com/downloads/DMM_Impact_Block_Flyer.pdf

 

Nice PDf, easy to follow and understand.

 

... you'll see that the MBS of the blocks are pretty much exactly double that of other products out there. The reason this might be interesting is that all of a sudden you can do most of your rigging with one of the S Impact Blocks, changing to L for the truly humungous bits. So instead of having to buy two conventional pulley now you could make do with one.

 

 

Is there a danger that by creating rigging blocks with even higher Working Load Limits than the ones currently used - you are encouraging people to rig increasingly heavier sections of timber when as an industry we should be encouraging the opposite as the structural strength of the tree is largely an unknown factor? shouldn't we be trying to minimise the risk of tree failure during rigging operations?

 

What are your thoughts on this issue?

[bob]

Looks like a nice pulley

certainly looks well thought out and rounded corners ect

Think we need stronger thinner ropes next as they will certainly be the weakest link

Is there a reason MBS is still TBC when WLL has been set?

Also do we know how heavy they are?