discomania · Jun 20, 2016

Anyone here lifted a 90 on a 2-post? Where did you lift from? Looking at it I would try and use as far forward and as far back on the chassis where it is still flat... Sound reasonable? Chassis is newish so I don't expect to see the lifting pads disappearing into the chassis!

jamesmartin · Jun 20, 2016

i have trailing arm mounts and in front of radius arms

freelance · Jun 20, 2016

Once wheels are off the ground, give it a shove on each corner so you feel happy it's balanced(safe) before you raise it further and go underneath

MeatCleaverX86 · Jun 22, 2016

a depending on you suspension setup ! took mine to a garage they went to raise it on a two post and the axles just kept dropping almost ripping off my break hoses thankful they noticed before they went to far needless to say extended hoses have since been purchased.

discomania · Jun 22, 2016

richard_paradox said:
a depending on you suspension setup ! took mine to a garage they went to raise it on a two post and the axles just kept dropping almost ripping off my break hoses thankful they noticed before they went to far needless to say extended hoses have since been purchased.

I was thinking about this! My expectation is that the axles will drop until the shockers are are full extension, the springs will take some weight too. Depending on what work I was doing I guess I could ratchet strap the axles to the chassis if I suspected too much axle drop.

The thing is, they are heavy things the full axle with wheels and calipers and what not bolted to them - not sure I am overly happy about it all swinging on the shockers.

GCS · Jun 22, 2016

discomania said:
I was thinking about this! My expectation is that the axles will drop until the shockers are are full extension, the springs will take some weight too. Depending on what work I was doing I guess I could ratchet strap the axles to the chassis if I suspected too much axle drop.

The thing is, they are heavy things the full axle with wheels and calipers and what not bolted to them - not sure I am overly happy about it all swinging on the shockers.

I have a two post and prefer it over a four post any day. Makes taking a allen off a doddle.
As for axle drop the shockers are more than capable of hold the weight of the axle. Front is restricted the radius arm anyway and I made up some straps that hook on the chassis for more extreme cases.

jamesmartin · Jun 22, 2016

discomania said:
I was thinking about this! My expectation is that the axles will drop until the shockers are are full extension, the springs will take some weight too. Depending on what work I was doing I guess I could ratchet strap the axles to the chassis if I suspected too much axle drop.

The thing is, they are heavy things the full axle with wheels and calipers and what not bolted to them - not sure I am overly happy about it all swinging on the shockers.

ive been using one for a lot of years and theres little weight on the shockers

Brown · Jun 23, 2016

Yup, when I've jacked up via the chassis, it's always the bushes that seem to take most of the strain. Indeed, if you take the shocks off, the axle doesn't drop much more. If the shocks can't withstand the axles dropping then they wouldn't be any good if you went over a humpback bridge or level crossing, or anywhere else where the axle drops suddenly.

I'd love a post lift. It'll be a while until I'm in a position to get one, but there seem to be quite a few available for between £1000-£2000. I'd probably find a 2 post (where the weight is taken on the chassis) more useful as it's easier to work on the suspension and drivetrain. If you're very worried about the chassis slipping off the supports you could probably make a clamp out of bits of flat plate and threaded rod to clamp the chassis rails on firmly.

discomania · Jun 23, 2016

Right OK - I got a 2 post 4 ton on Monday. At my business premises I have spare warehouse space I have used for years to do all the maintenance on my cars (where I did the 90 rebuild) and all the families and friends, it got pretty serious so the ramp was on the cards, but a year old ramp (the ones Snap-On brand up for themselves) was offered to me at short notice, what do you say! I paid the £200 to have it installed and tested and away we go.

I will get the 90 up on it soon for a good checkup.

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