The only problem that I have with the converted car engine stands is that you still need to somehow get your engine up in the air and hold it there until you can bolt the sucker into the stand, so you need a couple of strong men, or an engine lift, or a "chain hoist" to get it there, and when you do, it's fixed at one height that might not suit you ergonomically, depending on how tall you are, and whether you like to work on your engine standing up or sitting down, etc.
The company I used to work for bought this hydraulic scissor action trolley to make it easier for us to move .50 cal machine guns from APC's in and out of the armoury at work, but I could see that it was much more valuable to me in my garage, so I "borrowed" it, and I've found it to be probably one of my most useful garage tools. Eventually I'll put smaller castors on it, but for the time being I can raise my bikes an extra couple of inches by sitting the center stand on a length of 2 x 4 so that I can slide a 750 engine straight out of the frame onto the trolley, then I just push it into where I want to work on it, and jack it up to the desired height, for when I want to stand up, or sit down. Once I've done the work, I just roll the trolley over to the bike, and slide the repaired engine back in.
I place the engine on a cardboard sheet which allows it to easily swivel around to where I want it, and just prop the engine up on a couple of blocks of wood, and I can easily strip the engine down from "still in the bike" to the bare cases, all by myself, with no outside help. If I need to swivel the engine upside down I can use the trolley to move the engine over to an engine stand to hook it up, but I have to admit that I haven't needed to do this yet, as the only thing I've needed to do underneath the engine is remove the sump plate, oil pump, and all the lower engine bolts, which I can do on the trolley just by rolling it forward. (750 engines are "front heavy" so naturally want to roll forward anyway) This trolley cost the company $1000.00 when they bought it, but you can pick up a chinese version for a couple of hundred bucks. It's rated to 500 KG (1100 pounds) so with slightly smaller castors fitted, you could also use it as a bike lift. Cheers, Terry.
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