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Degsy

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Posts posted by Degsy

  1. The vehicle manufacturer's plate on the chassis shows the maximum design weight which would be allowable under an STGO. The paperwork in the cab shows the weight the truck is plated for ie 44 tonnes with a 3 axle trailer which is the maximum GVW allowable in the UK apart from vehicles which are operating under an STGO. All heavy trucks have a design weight greater than the maximum allowable legal weight which gives a safety margin but also allows the truck to be uprated if the maximum legal weight for the class of vehicle is increased. The only plate you need to worry about is the one in the cab which will be checked when the vehicle goes for it's annual test.I think you said the Cromwell weighs 28 tons which leaves you a margin of slightly less than 16 tonnes for the tractor unit and trailer. You will also need to make sure that your axle weights when loaded comply with the maximum weights shown on the plate in the cab, a moveable fifth wheel is useful in this respect. Hope this helps you a bit Rick

  2. Can't help being on a different island and all, but what's the unrefuelled range of a GMC?

    Looking a bit hairy over on t'continent right now.

     

    Depends on how it is driven, I used to average 10mpg on a run cruising at 40mph. Tank holds 33 Imperial gallons (40 US galls). Assuming the vehicle starts with a full tank it should cover the distance even if the fuel consumption was as high as 6mpg.

  3. 20/50 should do the job. I use the Halford's Classic 20/50 in my 1944 Dodges with very good results.

    As has been pointed out to you many times before Tony the engines in 1940's/50s vehicles were not designed for multigrade detergent oils.

    I don't know the grade of oil for the K9 but suspect like most vehicles of that era it would probably be 30 grade.

    I use Morris Oils in all of my old vehicles (always have done) as do many other members on here.

  4. Also - having read the rules again to find this I also noted that they now say:

     

     

     

    If I read this right - as of April 8th virtually every weapon owned by exhibitors are now classed as a "defective deactivation" and thus not in compliance with current UK legislation so cannot be taken to the show. If we all follow this rule to the letter it's going to be a pretty boring show for the public especially in the Living History area.......

     

    At the present time there is no law on the UK statute book under which anyone can be charged , however to speed up the processing of a new law an addition has been made to legislation already on it's way through Parliament. Assuming that this legislation passes into law before the show then I can foresee problems.

  5. This is a totally true story.......I know 'cos I was there!:trustme: Some years ago I was tipping soil on a farm which apart from the fairly new farmhouse was a total shambles, rickety buildings and the yard covered in slurry up to 18 inches deep. After tipping my exit was blocked by another truck delivering.........yes, you guessed it..........molasses. The tall cylindrical tank was stood on what I can only describe as four sticks and the remains of a door standing about 5 feet high and the driver was busy pumping in 750 gallons of the black sticky stuff. When pumping ended the driver climbed a rickety ladder that was resting against the tank in order to retrieve his hose, as he reached the top and grabbed the hose the stand collapsed, the tank toppled over a fence towards the house and burst when it landed. A wave of molasses washed up against the pristine white walls of the house and then gradually spread all round the house, the garden and the driveway.In the meantime the driver had tried to jump clear but only succeeded in measuring his length in the slurry face down from which he emerged looking like the creature from the brown lagoon. I have to admit to being helpless with laughter, tears streaming down my face for several minutes before I could get out of my truck to go to his aid. Fortunately for him it was a hot summer day and I hosed him down struggling to keep a straight face whilst sympathising with him, which was a bit false because I thought it was his own bl...y silly fault for unloading into a structure that was swaying about at the slightest touch. That was not quite the end of it, the farmer returned and the pair of them went for each other, both swearing blue murder until I gave them both a tap with a shovel to settle things down. Needless to say the whole matter was subsequently settled by the insurance companies and eventually the farmer and his wife were able to laugh about it. Just remembered, when the farmers wife returned from her teaching job she just looked at the mess, made no comment but got a pair of wellies from her car and carried her two young children through the mess into the house.

  6. I suspect you're right - probably find fluid leaking from somewhere well before 200bar (probably doing well to get to 110 ... will need to inspect PTO - am guessing it'll have a release valve designed to open at a given pressure located somewhere?).

     

    So the manufacturers line-pull figures (at 110bar, based on 80% overall efficiency) refer to moving a dead weight (in a horizontal plane)?

    As you say, the friction/resistance between the ground and object the winch is attached to will have a big impact (wondering how manufacturers set up test conditions).

     

    Have a sheave block - will see what it's rated at (no doubt a few accessories will be going on the shopping list in due course!)

    As I said previously I don't have expert knowledge, you will need to contact the manufacturer for answers to your questions.

  7. Although I've had experience with hydraulics I don't claim any expert knowledge but I suspect that the quoted figure of an 8 tonne line pull at 200bar is more of a theoretical figure than an achievable one, I think 200 bar is a very high pressure in this application. Always remember that in vehicle recovery it is normally a rolling load which is obviously very different to a deadweight pull or lift. If the vehicle you are trying to recover is bogged then the judicious use of a shovel before pulling is the important thing.:D

    You can easily increase the pull by the use of one or more sheave blocks.

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