Search results

  1. Metcalf

    Next generation snatch block

    I finished up the design on my snatch ring 'block' device. This works fantastic to keep the ring from 'tipping' over when the line becomes slack during a vehicle recovery. This keeps the line in the proper position on the ring and prevents you from having the lines saw through each other...
  2. Metcalf

    Synthetic winch line question

    Generally, once you get 10-15 percent of rated load on synthetic line it will permanently remove much of the air space in the braid. This will let you fit a bit more length on the drum vs steel cable typically. As others have mentioned, the closer to the 1st layer the stronger the winch will...
  3. Metcalf

    Next generation snatch block

    I just built it as a proof of concept. There are lots of ways to make it better moving forward. I paid $50 each for my rings delivered. Why don't you think this is strong enough for vehicle recovery? The forces on the ring are actually pretty isolated and generally just compressive. The...
  4. Metcalf

    Next generation snatch block

    Ummmm, ok. Where are your ideas, concepts, and testing again? The velcro strap does not have any load on it. It only keeps my anti-flip block in place on the soft shackle legs. As I mentioned, I wouldn't mind trying a few different strap alternatives. The velcro is so easy and adjustable I...
  5. Metcalf

    Next generation snatch block

    Here we go, first proof of concept.... The possibility of flipping the line out of the groove is no longer a concern. If your ring ( or traditional block ) is going through more than that during a pull, more power to you. This little device will weigh next to nothing. I am going to try a...
  6. Metcalf

    Next generation snatch block

    I'm working on the demo and video this weekend. You are not wrong on being concerned with the tension issue. The fix is just very easy and cheap. Stay tuned. I do have one question. Why can't you gain mechanical advantage with the single pulley you carry now? I'm confused by that statement...
  7. Metcalf

    Next generation snatch block

    Why? Have you tested your theories? What is unsafe about the low friction ring concept?
  8. Metcalf

    Next generation snatch block

    That is absolutely not what I am doing. I am only requesting that people have an open mind about new ideas. I have personally had issues with existing snatch blocks. I was shared those experiences. Your experiences may have been different. I welcome you to share them. I don't appreciate you...
  9. Metcalf

    Next generation snatch block

    And so then I posted further examples that CLEARLY show the same low friction ring concept being used in exactly the same situation as a snatch block. The line is still traveling though the 'thimble' redirecting the pull. In one configuration the wear is biased towards the ring. In the other...
  10. Metcalf

    Next generation snatch block

    Here, I will do some more leg work for ya. I guess the hand holding needs to continue.... https://www.ropeye.co.nz/sail-rigging-hardware/ Are the 'block' applications listed by this manufacturer an accurate enough correlation reference for you? The first examples I posted are only rigged...
  11. Metcalf

    Next generation snatch block

    Have you run a snatch block in a nasty environment for an extended period? I've had units rust up just from being stored in an open vehicle for too long. So the use cases from the marine world and arborist industries don't count in this case? They are called 'Low Friction Rings' in the...
  12. Metcalf

    Next generation snatch block

    It is a pulley, yes they have been around a bit. I'll try and replicate your concerns the best I can. I know where you are coming from, but i think you are focusing too much on one small issue. The SAME thing is a existing problem with synthetic lines and traditional snatch blocks. The line can...
  13. Metcalf

    Next generation snatch block

    It is new technology in the off road sport. It started with one or two companies giving it a try....now I notice 3 or 4. Give it a little time....
  14. Metcalf

    Next generation snatch block

    Oh I have lost weight while getting a winch workout for SURE during an extended recovery. Anything that can be done to eliminate weight in the vehicle and on the person doing the rigging is a good thing.
  15. Metcalf

    Next generation snatch block

    So basically you want a test if I can make the ring concept work for tension changes..... Basically all we really need is to run the winch in while allowing the vehicle to overspeed the winch. That will let the lines drop. I can get close to that, but it won't be a 75' total. Maybe 50-60' max...
  16. Metcalf

    Next generation snatch block

    How fast do you need to winch?
  17. Metcalf

    Next generation snatch block

    I found some temp testing on the aluminum ring for those interested.
  18. Metcalf

    Next generation snatch block

    This sounds like the same argument I heard about synthetic winch line back in the day......it will never work....mud abrasion, etc. How long is a snatch block bearing/bushing going to last when it is in the same gritty environment? The aluminum doesn't have to be 'soft'. These rings are made...
  19. Metcalf

    Next generation snatch block

    You know there are clear and obvious issues with most current snatch blocks and synthetic line right? In the same situation, the synthetic line can jump into the space between the pulley and side plate when being up tension and/or with tension isn't consistent. This can be very hard on the line...
  20. Metcalf

    Next generation snatch block

    What makes it 'professional duty'? I don't see a turned piece of aluminum being comparable.... A very nice snatch block from ARB in the recreational market is about $120. https://www.quadratec.com/products/92144_3000.htm I'm not against this idea, but not at a huge cost premium for a simpler...
Top