Like Tree1Likes

Thread: Load release Hitches

  1. #26
    Forum Member

    Join Date
    Jan 2012
    Posts
    79

    Default

    You CAN pass a knot through an MPD based system without a load releasing hitch if you use an MPD for the belay line as well. You have to tie off your mainline to do it to maintain a true two rope system for the entire operation.
    I used to be DCFDRescue 2. Forum changover locked me out.

    www.rescue2training.com

  2. #27
    Forum Member
    MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default

    The thing I don't like about the radium is all the excess rope you have to deal with. Won't 15 foot radium as opposed to 30 foot still be good?

  3. #28
    Forum Member
    jdcalamia's Avatar
    Join Date
    May 2010
    Location
    Broomall, PA
    Posts
    106

    Default

    The radium is basically a dirty 3:1, which cuts your throw by a factor of 3 right off the bat. So a 15 foot piece of cordage will provide you with less than 5 foot of throw, which depending on your operation could really jam you up. The typical 33 feet that is used gives you about a 10 foot throw (lose 3' for knots, bends, etc... just to be conservative) much more workable for multiple raise/lower switches, the occasional loaded belay, etc...When you pre-rig your LRHs, try putting the excess into a small accessory type bag, it manages it well, or daisy chain it and stay on top of it.
    John D. Calamia, BS, NREMTP, FP-C
    Firefighter/Flight Paramedic
    Broomall, PA

  4. #29
    Moderator
    ProgressiveRescue's Avatar
    Join Date
    Jan 2010
    Location
    New Jersey
    Posts
    228

    Default

    Quote Originally Posted by Rescue 2 Training View Post
    You CAN pass a knot through an MPD based system without a load releasing hitch if you use an MPD for the belay line as well. You have to tie off your mainline to do it to maintain a true two rope system for the entire operation.
    Good point Kelly....So simple,less equipment seems like a no brainer to me. I do understand the importance of staying sharp with all your skills even if something bigger and better has replaced them. I just hate to see guys discount a new piece of gear just because it's new or not the way they were taught.
    -Mike-
    "Training Prepares You...For Moments That Define You

  5. #30
    Forum Member
    FiremanLyman's Avatar
    Join Date
    Dec 2009
    Location
    Texas
    Posts
    948

    Default

    Quote Originally Posted by jdcalamia View Post
    ...When you pre-rig your LRHs, try putting the excess into a small accessory type bag, it manages it well, or daisy chain it and stay on top of it.
    when you daisy chain the radium, make sure you start at the tail end AWAY FROM the hitch so it can play off into the LRH. otherwise you'll have to unchain the whole thing before being able to use it.
    ~Drew
    Firefighter/EMT/Technical Rescue
    USAR TF Rescue Specialist

  6. #31
    Forum Member
    MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default

    Quote Originally Posted by jdcalamia View Post
    The radium is basically a dirty 3:1, which cuts your throw by a factor of 3 right off the bat. So a 15 foot piece of cordage will provide you with less than 5 foot of throw, which depending on your operation could really jam you up. The typical 33 feet that is used gives you about a 10 foot throw (lose 3' for knots, bends, etc... just to be conservative) much more workable for multiple raise/lower switches, the occasional loaded belay, etc...When you pre-rig your LRHs, try putting the excess into a small accessory type bag, it manages it well, or daisy chain it and stay on top of it.
    I never thought about the 3;1 MA, now the length makes sense. Thanks for the insight.

  7. #32
    Forum Member
    MichaelXYZ's Avatar
    Join Date
    Jan 2012
    Location
    San Diego
    Posts
    354

    Default

    Quote Originally Posted by jmatthe2 View Post
    The sewn mariners hitches from CMC and Rescue Technology are simply not long enough for all applications. I remember my first exposure to them and I crapped my pants when I was out of throw and still needed a few feet to pass the load!!

    The radium is a great hitch when used with 6 mm cord. Thicker than that and it can have too much friction. The hokie is ok...I don't use it as its just too bulky and troublesome for my liking.

    Many have hit on it but ALL rope buffs should have a mini-haul (Aztec, Jigger..). This is a most bang for your buck piece of gear.

    MPD....I've only used one once; can't seem to talk CMC to send us one to demo. Seems like a great, yet pricey piece of gear. To bring the conversation full circle, you would still need some type of release to get a knot through the system, correct? My point is, no matter what new high end piece of gear shows up, it will never replace the need to maintain proficiency on basic rope skills and techniques.
    If you had thicker cord, say 8mm; could you just do away with the munter to compensate for the added friction?

    I tried to google Aztec Jigger, but turned up nothing,
    Last edited by MichaelXYZ; 09-27-2012 at 05:26 AM.

  8. #33
    Forum Member

    Join Date
    Feb 2012
    Location
    British Columbia
    Posts
    7

    Default

    Here you go: AZTEK

    We use 8mm cord for our Radium Release Hitches all the time, and have not noticed any problem with too much friction. I would consider the ultimate strength of the system before you decided to go to a 6mm cord.

  9. #34
    Forum Member

    Join Date
    Jan 2012
    Posts
    79

    Default

    Quote Originally Posted by snoboy View Post
    Here you go: AZTEK

    We use 8mm cord for our Radium Release Hitches all the time, and have not noticed any problem with too much friction. I would consider the ultimate strength of the system before you decided to go to a 6mm cord.
    RIGHT! 6mm would probably hold, but 8mm has been tested and documented to hold. 8mm with a Munter does not have too much friction. If you have an NFPA two person load (600 lbs), even with a 3: 1 MA, you are still having to hold 200 lbs on 8mm cordage. No I'm not taking into account the friction of the cordage on the biners. But try holding on to even 125 lbs of weight hanging vertically on a strand of 8mm. Difficult.
    I used to be DCFDRescue 2. Forum changover locked me out.

    www.rescue2training.com

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Load releasing hitches
    By bolt109 in forum Specialized Rescue
    Replies: 23
    Last Post: 10-29-2007, 07:42 PM
  2. LRH Load Releasing Hitches(Rope or Web)
    By shrek85tsvfd in forum Specialized Rescue
    Replies: 19
    Last Post: 08-19-2006, 06:54 PM
  3. Flat load vs. accordian hose load
    By theotilus in forum Firefighters Forum
    Replies: 21
    Last Post: 07-30-2003, 11:03 PM
  4. name release
    By ltcjmurphy in forum Emergency Services Dispatcher
    Replies: 8
    Last Post: 07-21-2003, 08:00 PM
  5. Load release hitches
    By prussik745 in forum Specialized Rescue
    Replies: 5
    Last Post: 12-01-2000, 08:55 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Log in

Click here to log in or register