Badwolf Posted April 6, 2021 Report Share Posted April 6, 2021 I would have though that with any jack, if you jack up the car to the maximum that the jack would lift, measure the height, leave it overnight or longer, measure again and if it was still the same, it could be classed as pretty safe. Link to comment Share on other sites More sharing options...
PeteH Posted April 6, 2021 Report Share Posted April 6, 2021 Lifting devices, When tested, are usually taken to 1+times the max allowed working value. And held for a specific period. the actual times/values are dependant on the parameters set down by the test house or statutary documentation. eg; I used to hydraulic test pressure vessels, Most often, Steam Traction or Railway Engines, 1.5 times SWP for 30min without loss of pressure. Pete Link to comment Share on other sites More sharing options...
poppyman Posted April 6, 2021 Report Share Posted April 6, 2021 If i had a jack rated at 50 tons, i wouldn't go under my car without stands. Pressure testing is done for safety, i once saw a video of an engine boiler blowing up..... Terrible. Tony. Link to comment Share on other sites More sharing options...
PeteH Posted April 6, 2021 Report Share Posted April 6, 2021 23 minutes ago, poppyman said: If i had a jack rated at 50 tons, i wouldn't go under my car without stands. Pressure testing is done for safety, i once saw a video of an engine boiler blowing up..... Terrible. Tony. Neither do I, I always use axle stands too. I don`t go (didn`t) under 2 and 4 Post lifts either unless the lock`s where checked as being in place!. I`ve wittnessed some horrors in a 20year career, The aftermath of a Boiler Explosion at Bracknell in the 80`s, when 2 guys literally vanished was one. Pete 1 Link to comment Share on other sites More sharing options...
Bfg Posted April 7, 2021 Author Report Share Posted April 7, 2021 Decision made.., for better or for worse I've gone to CJ Autos and bought their 3T low entry, high lift trolley jack. . . ^ I recon CJ Auto are probably as sound a business to buy off as any other, insomuch as they actually give an address, a map and a telephone number to contact them on. And they seem to prosper on their innovative products and reputation. I'm tired of cyber-world nationals that hide away from direct customer contact. Anywas up., as you can see the spec is pretty close to what I was looking for .. Description - Low profile trolley jack This heavy duty yet low profile garage jack has been developed for users who give high priority to quality and durability. Designed to withstand demanding use in garages and workshops. A must for the home mechanic and serious enthusiast alike. Dual pump pistons for fast lifting action. Bumper pad on the handle to protect the vehicle. Two rear casters that pivot 360 degree for easy maneuverability. 3 Ton low profile trolley jack with double pump action to raise quickly. Lifting Range: 2-7/8" to 19-3/4" (75mm - 500mm) Saddle Diameter: 4.6" (116mm) Handle Length: 45.5" approx. Comes equipped with overload protection safety valve and over pumping prevention by-pass system. This item offers excellent stability. Universal joint release for precision control of load descent in any handle position. Heavy Duty all-welded steel construction. Min. H: 75mm Max.H: 505mm weight: 33kg Please note the saddle / dish is not removable. And at £108 including delivery, that's as competitive a price as I could find for a low profile high lift model. Visually, aside from it having no brand-name stickers, it is looks just like the 2T Draper 61829. And in all but the lifting capacity its dimensional specs are likewise very much the same. I tend to think of Draper Tools as being mid-budget but also pretty decent quality and reliable, so if the one I've bought is badge-engineered for half the brand-name's price - then I really don't mind. We will see if I have "chosen wisely". Pete. Link to comment Share on other sites More sharing options...
Nigel Clark Posted April 7, 2021 Report Share Posted April 7, 2021 CJ Autos have a good reputation. That is a very competitive price. My Draper trolley jack has made working on my classics so much easier. I've no doubt you will find the same. Nigel 1 Link to comment Share on other sites More sharing options...
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