Hey Pete, Do you have any products in mind for a heavier duty hydraulic pump or do you think it could withstand something like a “cheater bar” to give you some more leverage? I’ve got a very similar car bodywork repair hydraulic pump and i’m very dubious that it can actually put out the force advertised on the box. thanks, cal
I haven't looked at alternatives to this pump I'm afraid. I was hoping to keep this setup mobile so I discounted electric hydraulic systems or anything likely to be significantly heavier. I think if you want more pulling power, you need to move away from hand pumped rams. Extending the pump handle for more leverage is a tricky one. It does not feel at all flimsy on this pump, but I'm not sure how well the arm pivot would take the extra force of a longer lever. It's good kit, but not mega beefy hardware. The brand of pump and pull ram I have is Porta Power, and they get good reviews. I'm sure I can get 50kN+ out of it, which is the limit of my test bed sensor anyway. I have been up to 40kN already no problem, so 4T equiv force. If you need more force, can your setup pull on a 2:1 with chain or cable and a big pulley? That way you can exsert half the force at the pump than the force on the sample/car/load.
A pulley or two would be a lot cheaper than buying a bigger hydraulic setup or electric winch. I’ll have a look at steel cable and some pulleys to take it. I suppose the cable itself won’t need to be able to take the full output force. i would guess the stress would be divided equally across all strands of the pulley system, although i wonder whether there’s different amounts of stress in the slower moving strands close to the load compared to the fast moving strands on the hauling side.
Harry Long Straining the ends round the outside of the ladder to fasten them (i,e. the very short length between the last rung and the splice) as shown in some of your footage puts an excessive strain on that very short length of wire. This leads to potential damage and is very bad practice. When I became leader for UWFRA I found they were using stainless steel wire - as advocated at the time. hopefully, no longer in use anywhere. Looking at this I found that I could break the wire by hand with a minimum of effort and thus binned all their ladders! The only really safe way of fastening the ends is by threading one side wire through the coil to mesh with the C Link on the opposite side and the same for the other side.
Stainless wires are more brittle than galv in repeated flexing. I've seen stainless zipwires need replacing much faster than galv ones. Anyway, if you have to strain the wires to join the links because the ladder is not coiled well or too large to do this with, then yeah, it's probably going to stress them, but all my ladders are short and can be coiled tight enough so the last links easily connect together. Not bad practice at all, you just need to not force things.
Respectfully disagree here. The addition of a good quality pulley as a redirect does little to reduce the overall MA of the system. It does however allow the hauler to fully leverage their body weight by pulling down holding the rope or via a chest ascender. This will be far less effort than using legs and lower back for upward pulling. Someone like me with 90kg of gravity will have a massive advantage in a haul with overhead anchors verses just pulling up directly. Of course both work and would be safe, and in some situations direct up-pulling may be better, but overall using body weight is better than muscle for stamina and injury prevention when a good overhead anchor is present.
Another great video Pete, really glad someone is producing these resources! If it's useful, at 07:42 You don't need to remove the pulley when changing from the traxion to the rig, just pull some slack through - reduces the chances of dropping anything!
Great video Pete. I had seen the technique of breaking into a fixed SRT line using a short sling and traxion but never thought about applying it to a belay system . Thank you!
Same here, Peak district, late 70s early 80s, Waterway Swallet etc. Home made ladders made from cheap aluminium tubes , TV arial rigging wire, trapped in the tube by wooded pegs hammered into the ends of the tube. Safety rope? We sometimes used truck ropes if it looked really bad. Had a ball, but all so long ago now.
Plenty of galena in the mine where I work. We're a flourspar mine in Derbyshire. A large mineral vein through predominantly limestone. The lead is collected alongside the flourspar. The galena has unusually "bubbled" up in areas, thats the only way I can describe it, rather than it being a vein as such
I agree it’s smart to leave stuff in mines for others to enjoy. But a word of caution. Governments don’t care! In Utah and other places in the US the government is actively closing, baring up, or blowing up mine entrances to keep people out. In some cases they’re just demolishing everything historical buildings included. So if you’re in an area where it’s going to be destroyed id say collect what ya want because the government will stop future generations from enjoying mines even if the mines are safe. Some mines are dangerous or unstable and that makes sense to close but a lot are in good condition. It’s sad to see history being destroyed by government. What’s also sad is the hypocrisy. My friend is a scrapper and ships truck loads of scrap. He asked the government if he could clean up a 100 year old dump that’s just on the outside of town. The government said sorry that dump is protected by federal law. Let’s save a dump and destroy mines. I think environmentalists love when mines are destroyed at least in Utah. There’s a mountain range where there were tons of mines and today it’s a wilderness study area. Wilderness protects areas that haven’t been touched by man but now wilderness is used to prevent the use of land even if the land has clearly been mined in the past. I’m jealous of the UK. I read the UK requires people to turn in finds from metal detecting but are rewarded. In the US if you find something in the west on public land and sometimes private the government will just take it with no reward to the finder. So obviously a lot of history isn’t reported due to incentives from the government.
Very clear! Good to see, i like the reminder about placing the casualty safest and quickest spot for first aid to commence. Big shout out to beard bag too, great acting there!
I have some clog and 'snow and rock' carabiners. I bought them about 10 years ago. I know clog made snow and rock equipment and wild country bought clog years ago. Any idea of where I can find life span ratings for them? They live on my personal rack as i am unsure. Great videos by the way. keep up the good work. HP
Hi mate, cheers. I think the only people to ask will be Wild Country. I would expect that as there is no benefit for them stating that gear made by another brand before they took over would be fine to use, so they'll just say replace it. Rope Test Lab on FB is a good place to ask for old paperwork as people seem to hoard things like that!
