Jump to content

cosrec

Members
  • Posts

    1,234
  • Joined

  • Last visited

Everything posted by cosrec

  1. very much like the one i mentioned
  2. Some of the lifting gear suppliers eg ships riggers operate on site testing for lifting gear. If you have a word with them the can be a good source of cheap equipment for winching. They do site visits to large companies and end up with skipfulls of straps shackles etc. Sometimes for no other reason than office staff cant find the certificates for them or they have lost there id tags. Only get gear that is way above the capacity of the winch you own and has no obvious damage. At the moment i think those endless straps made of like nylon rope with protective sleeves on are the best things since sliced bread and working loads way above what you would think. Lighter than chains and as long as you dont wrap them round sharp edges will get you out of the s?*t . You can leave your hemp ropes wrapped around front bumpers for authentisity and just get these from under your front seat if you need them
  3. I think all winches elec air mechanical and hydralic are rated on bare drum eg first layer by manfacturers. (except for the more expensive constant line pull ones by rochler and plummet) Mechanical winches oftence have shear pins or friction clutches to stop overload. Air and hydraulic have relief valves. Very expensive electric winches sometimes have thermal overload cut outs on them. All winches must when tested be able either through friction or gearing or brakes be able to hold the full load with out running back. Now a days recovery operators who take thier vehicles for Lolar examinations (a requirement for many contracts) have fallen out of favour with the electric winches. The reason being the cheaper electric winches even between the same models in the same range have such a vaired stall piont. Little tip as stated winches are rated on bare brum. You have got stuck at the bottom of a long steep bank. You have a tree at the top and your vehicle is going to take 3 tons to pull it up. you have a 4 ton hydraulic winch on front bumper so you make with the winch and go for it. Embarassment your winch stall before you get to the top. Reason as layers go on winch power reduces. To show how much our bigger wreckers are fitted with twin 12.5 ton Superwinches these will pull 12.5 tons on bare drum. 5th layer they only pull 6.3 ton a big difference. So what ever the size of winch you have it pays to know what it will pull on each layer Whoops forgot to say in answer to Rcubed rope is matched to first layer rating. On cheaper winches drum diameter is sometimes that small rope gets permantly deformed wrapping round it
  4. Whats the photo n0 6 reminds me of a mack NO is it a Scammell cab on it
  5. One thing that pees me of it is the wording Freak accident no its not a Freak accident it happens many times a day through out the world and nobody gets injured the only time it becomes a Freak accident is when it happens in your local area and somebody you know gets grief over it
  6. cosrec

    Ndt

    HGV tests the man goes around with toffee hammer taping wheel nuts and chassis bolts test for tightness but they also some times tap brakedrums when brakes are of if they dont ring chances are they are cracked
  7. Long time ago i went to a furniture removal TK on M62 to tow it to local Bedford agent. On arrival driver had virtually emtied front portion of body and lifted the front panel and floor that went over cab. The cab had been tilted and the driver was expecting me to fit a water pump. The cab was raised with the standard screw jack which was stood on what looked like a proper manufactuers bracket riveted to the N/S chassis rail and pressed against a bracket on the underneath of the cab. The brake and clutch pedals had been removed by undoing pinch bolts. From what i could see the only non standard parts where a U/J replacing fabric disc coupling on steering coloumn and two hinges where standard cab mounts supposed to be at front. Forman at dealers told me it was a factory option from new but nobody would pay the extra £16 for it
  8. Hope this link works http://tow411.yuku.com/topic/91329 Its for those who think winch cables are harmless. Sad thing is it will have been preventable either equipment not up to job or under estimation on forces involved
  9. What a cute little truck sure looks fun done anything else to it apart from bigger wheels
  10. Dont know exactl numbers but at least 3000 were repatriated to Montivadio by a converted car ferry Owned by North Sea Ferries called MV Norland
  11. Reply to Paulob sorry if this turns out to be a long reply. First the recovery calculater is some thing i have never heard of and i would like more info or perhaps some more pics of it. Bit of history when the flegling recovery operaters assosations were try to change the recovery mans image from cowboy to that of proffesional (make your own mind up how well they have done?). It was decided that training was the order of the day. It was looked in to and some of the founders approached the army who had done RD into recovery. One of the things they came away with was a complicated list of calculations that covered all situations. Over the years our assosiations have simplyfied these to cover i would say 90% of what any one is likley to come across. Now to work for contracts for police forces and lots of other goverment departments you have to have certificates in training and one of requirments is you have a working knowledge. Sounds all very complicated truth exact opposite. We carry all the info on a little card not much bigger than a credit card. Can be all worked out with wet finger on side of dirty truck. WT=Weight of casualty Winch Power Required = Rolling Resistance+ Damage Resistance+ Gradient Resistance Rolling Resistance= Smooth Road WT divided by 25 Grass/Gravel WT divided by 7 Beach Shingle WT divided by 3 Sand WT divided by 6 Mud WT divided by 3 Soft Clay WT divided by 2 Bogged to axle WT times 1 Bogged to wheel top WT times 2 Bogged to Rad top WT times 3 Damage Resistance=WT times damaged wheels/tracks divided by total no wheels tracks Gradient Resistance (simplyified) 10 to 30 degrees WT divided by 3 30 to 45 degrees Wt divided by 2 Above 45 degrees total WT All above require winch force to be applied parallel to gradient As i had pionted out to me these figures probally wont get you the best seats at the match but sure stop you arriving at the wrong stadium. They oftence throw up some suprising results. Plus if you work them on a vehicle being used to do a recovery You can calculate how much (or suprising how little) you can winch I am also willing to piont out a couple of other pit falls i it helps anyone
  12. Thought you were showing a genuine intrested there not trying to have a go. Any way you have answered your own question axle missing two wheels damaged. work it out.
  13. On wheeled or tracked vehicles if missing or wont rotate for some reason then its classed as damaged Damage resistance= Wt of vehicle X damaged wheels/tracks divided by total number of wheels/tracks
  14. Know it wont probably interest anyone but heres the maths for this recovery Damage resistance 0 Gradient Resistance 30 degrees ? = 6.5 tons Rolling resistance Grass bank ? 7 = 1.85 tons Ihave guessed wt of Scammell 13 tons So should move at 8.35 ton say 9 tons allowing for bits rubbing on grass bank. Bit of a suprise for size of vehicle compared to figures for stalwart. All together lot more workman like thought out job or least thats the way it looks on vidio
  15. STAL 108 i must reply i have given you advice learnt from my own mistakes the occasion when i lost my teeth and recieved conccusion and whip lash was etremely painful and if it could save anybody going through the same grief it would be well worth this post. as for the occasion with the commer van i was trying to draw your attention to potential leathal dangers. the widow in holland was a lady who i met whose husband had been decapitaded by a (harmless)winch wire when pulling a truck out of a ferry. You are free to do what ever you want but please but dont advise others do the same As i believe you do with over width vehicles
  16. The pent up energy under heavy winching is unbelievable. Many years ago i was winching a loaded cement mixer out of a road side dyke i broke a chain . Unpreturbed we carried on on finishing a fitter who had come to come to give me hand went to our commer van which was parked three hundred feet away in the side of it was a hole about about 2 inch dia the front screen was knocked forward and smashed out at one corner on the dash was about 1/2inch of chain link
  17. when the chain rope recovery equipment breaks as we have seen and it drops back in to the water would you stand up and say it was your fault if the driver was knocked sensless and something happened to him you may laugh but the whole thing alas is down to who can blamed for this or that watch telly listen to the no fault accident adverts
  18. Knock as much as you want a little thought could have made all the difference and more important reduced the danger to all involved. EG instead of trying to winch it through the bank a recovery vehicle with ample capacity was on scene why not try try backing up a bit so winching upwards more instead of through. Or try using those round wooden rollers to winch over that are carried on milatry vehcles (forget what they are called now) either method would have reduced strain on equipment by half. Get all non essential personal out of way that includes driver and passengers of stalwart they were only adding to problems and dangers
  19. I stand by my use of the words Balls up and not because the rope snapped. But because of irrisponsble way the recovery was handled. Now i know people were probally still on an adrenalin high and not thinkinking about the forces involved perhaps a little ignorance was involved. but believe me all winching operations should be treated with respect. As for there being little danger i personaly met a widow in Holland who would not agree. My self lost 16 teeth and spent 24 hours in hospital when a wire rope parted. Here is a tried and tested formula to aid you on your next recover job might just save someone a lot of grief one day Winch power Required= 1 Rolling Resistance+ 2 Damage Resistance+ 3 Gradient Resistance Damaged Resistance= wt casualty *damaged wheels/Total no wheels in your case 0 tons Gradient Resistance= Wt casualty/60*slope in degrees over 45degrees = Wt in your case 9tons Rolling resistance= Sand Mud Wt/2 in your case 4.5tons therefore Total winch power needed a tadge over 13.5 tons if winched parallel to gradient in your case i would suggest the angle it was being pulled at meant at least a third to half of the energy you were applying was doing nothing but pull stalwart into bank. This is born out later in the vidio when you see the earth in front vehicle start to rise up. You compounded the strain on the tackle by trying to drive the machine at the same time this can easily double loads by shock loading. This was all done on two ropes with at guess 2.5 tons SWL it was a no boner from the start. Frankly i am suprised the chains didnt go the same way
  20. would you use these same words if some body had a claim against you " I will admit it was far from safe. yes admit" The whole recovery operation was a balls up from start to finish end of
  21. Try these guys they are good to deal with and it is always top notch gear at reasonable prices www.red-bhw.com.
  22. if you posted what the mods were it would make any decisions to buy or not a lot easier i am curious. As you post suggests they arnt road legal wether all ready registered or not
  23. Tut Tut antarmike i thought you would have realised by now there is no piont in tryinging to draw peoples attention to points of law all you will do is get the posts locked. By not mentioning it any problems will dissapear Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen. Winston Churchill Criticism may not be agreeable, but it is necessary. It fulfils the same function as pain in the human body. It calls attention to an unhealthy state of things
  24. talking to a revenue officer yesterday while working His own personal opinion of a public road/highway/place was land maintained at goverment expence. His only knowledge of an agricutural vehicle getting dipped was a tractor dressed up as a steam train that travelled a short distance on a public road and charging passengers for rides. Although he didnt know the outcome he had worked at one of the steam fairs on the NE circuit but had never targeted agricultural vehicles. He did say old non company registered landrovers are allways worth a try if nothing else is about
  25. HELLO ANYBODY IN dont think some of you guys are reading this right when you are on private property eg off a public highway you can run on what ever fuel you want you just cant use non duty paid fuel to ride to and from event on public road
×
×
  • Create New...