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24-08-2020, 14:39   #46
jmreire
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Originally Posted by BrownFinger View Post
Its annoying when you jack a car at the jack point that you cant put the stand under the jack point or sometimes even close to it because the base of the stand hits the trolly jack.

I always put some folded corrugated cardboard between the car and the stand to protect the car a bit.
If you look at the sill panel ( its the very bottom panel, running the length of the car, between the wheels) you will find an edge running along it as well. When cars are damaged in an accident, its this "lip" that is used to clamp the car to the jig-... and from this point, the car is hydraulically pulled back into alignment, so it's very strong. Its actually several panels spot welded together that forms the lip. So what I do in the same situation as you, is I put a length of 4 "x 2" x 4 r 5' along the sill under the lip, and jack the car up from there, that leaves the actual jacking point clear. Place the jack just far enough away from the jacking point to allow placement of the axle stand. Never place the jack in in the centre of the sill panel, to try and lift both wheels on the same side, always do it wheel by wheel. Personally, I would never put anything between the jacking point and the jack..for me, its metal to metal all the way, as this is the way its designed to operate. Dont worry to much about damaging the car, it wont happen, if the jack / axle stand is placed correctly. ( as a matter of fact most of the jacks supplied with the car, have a "V" shape in the top of the jack, and this is to allow it to be used along the sill panel lip. Some others have a "spud" at the top and this fit's into the car jacking point. )

Last edited by jmreire; 24-08-2020 at 15:53. Reason: Additional info
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24-08-2020, 22:04   #47
RobAMerc
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I personaly think your fears about axle stands used properly are unfounded.

I like to use axle stands under a cross member or something of the subframe if possible - and I hate the way the axle stands have those 2 "prongs" ( upward part of the top U plates ) - I worry one will bend and cause the car to tip and then slide off ( poorly explained, I know ! ). I would like interchangeable ones, flat when under something flat, U shaped for curved surfaces like an axle
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24-08-2020, 23:54   #48
kadman
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The draper axle stands are 5mm wall thickness of the tube, so no car made could bend these babies.
And the top of the axle stands U shape is probably about 8mm thickness , or more.

These are the best available that I could buy at the time, and i have used them many times.

As Jmreire pointed out, its important to tap each leg of the stand to make sure the 3 legs have firm contact with the
ground, as you dont want them rocking on 2 legs. Thats the proper method of using these.

Combined they carry a weight of 6 ton on each axle stand. And i never ever had any hesitation getting under any vehicle
with these stands.

I bought them for 35 euro a piece at the time, which I thought was expensive, but now they are 80 euro each.

I rarely use them now as I have a full height scissor lift, 7foot to the top of the tables, that are brilliant.
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25-08-2020, 00:26   #49
jmreire
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I like to use axle stands under a cross member or something of the subframe if possible - and I hate the way the axle stands have those 2 "prongs" ( upward part of the top U plates ) - I worry one will bend and cause the car to tip and then slide off ( poorly explained, I know ! ). I would like interchangeable ones, flat when under something flat, U shaped for curved surfaces like an axle
Unless the stands had these "prongs" on them, I would not even consider using them....and I have plenty of experience using stands including "Jack- Stands", which are 6' stands used with lift. They are used for maneuvering / positioning a vehicle on a lift.
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25-08-2020, 16:48   #50
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two railway sleepers ftw....make sloping ramps and drive it on up. tbh I'd go for purpose built ramps, cheap enough or better still, big jack and axle stands.
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06-09-2020, 21:02   #51
MrCostington
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Hi, just to update you all. After much faffing around, including a false economy of buying a really cheap jack, I finally finished the stands and got the car up on them.

Myself and another guy tried to rock and push the car off them, everything was solid. If anybody can see any reason not to get under it, please let me know.

Thanks!



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07-09-2020, 08:01   #52
RobAMerc
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looks good to me, great job !

The Merc is a beaut by the way.
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08-09-2020, 00:54   #53
jmreire
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Hi, just to update you all. After much faffing around, including a false economy of buying a really cheap jack, I finally finished the stands and got the car up on them.

Myself and another guy tried to rock and push the car off them, everything was solid. If anybody can see any reason not to get under it, please let me know.

Thanks!



Personally, I'd have gone a bit higher, at least one but possibly two more layer's of wood,while I was at it. If you are trying to do a transmission ATF change and flush, you will need plenty of room to maneuver the large basin needed to catch all the oil underneath. Lovely Merc BTW.
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08-09-2020, 08:44   #54
kadman
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Originally Posted by jmreire View Post
Personally, I'd have gone a bit higher, at least one but possibly two more layer's of wood,while I was at it. If you are trying to do a transmission ATF change and flush, you will need plenty of room to maneuver the large basin needed to catch all the oil underneath. Lovely Merc BTW.
Totally agree. You are only up an additional 4 1/2 " from no stands.

How do you get under. Do you use a creeper, which surely raises your body
another couple of inches.

Its too low for me anyway, and too cramped for ease of working if you are not on a creeper. Apart from that the higher up it is, the more light is getting in under the car for working.

Personally I would double the height, but of course that doubles the cost.
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08-09-2020, 10:11   #55
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Originally Posted by kadman View Post

Personally I would double the height, but of course that doubles the cost.
Doubling the cost of that amount of timber could see you hit the - €20 ? - mark.
Hardly a factor.......


Check out the wooden supports holding this 45t lot up at:

00:41
01:41

https://www.emining.ch/en/


Cars really aren't going to test a wooden stand....
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08-09-2020, 13:01   #56
MrCostington
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Originally Posted by jmreire View Post
Personally, I'd have gone a bit higher, at least one but possibly two more layer's of wood,while I was at it.
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Totally agree. You are only up an additional 4 1/2 " from no stands.

How do you get under. Do you use a creeper, which surely raises your body another couple of inches.
Thanks both. I agree is it a bit tight and uncomfortable, but I'll put up with it for maybe 5 hours a year under it. I just had a quick look under it (no creeper, just slid on the foil covered yoga/exercise mat you can see there). As I said before, I might go up one more layer, hopefully I'll do at least the engine oil this weekend and see how it goes.

The thing about going higher, is getting it jacked. I used a 3 tonne jack that goes from 14cm to 43cm and even with that had to put a block of wood under the diff. I think trying to go too high increases the odds of an accident during the jacking process (don't forget I have to bottom out the suspension travel before the wheels start to raise).

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Doubling the cost of that amount of timber could see you hit the - €20 ? - mark.
Actually, it took many lengths of 2x4 and 2 off 2x2 and a box of screws, over 50 quid so far (in Chadwicks)

Anyway, any further thoughts re safety?
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09-09-2020, 16:30   #57
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Originally Posted by MrCostington View Post

Actually, it took many lengths of 2x4 and 2 off 2x2 and a box of screws, over 50 quid so far (in Chadwicks)

Anyway, any further thoughts re safety?
I suspect my timber buying price is better than what you pay Chadwicks

I think the safety is fine. Timber blocking is widely used: look at what holds up the keel of a ship in dry dock...........can't see a W123 testing it tbh....
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09-09-2020, 17:46   #58
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Thanks both. I agree is it a bit tight and uncomfortable, but I'll put up with it for maybe 5 hours a year under it. I just had a quick look under it (no creeper, just slid on the foil covered yoga/exercise mat you can see there). As I said before, I might go up one more layer, hopefully I'll do at least the engine oil this weekend and see how it goes.

The thing about going higher, is getting it jacked. I used a 3 tonne jack that goes from 14cm to 43cm and even with that had to put a block of wood under the diff. I think trying to go too high increases the odds of an accident during the jacking process (don't forget I have to bottom out the suspension travel before the wheels start to raise).



Actually, it took many lengths of 2x4 and 2 off 2x2 and a box of screws, over 50 quid so far (in Chadwicks)

Anyway, any further thoughts re safety?
I'd have no qualms about getting under the car with that kind of a set-up safety wise....but as already mentioned, its a little bit on the low side for comfortable working conditions. 18" between the ground ( or better ) would be fine for me. That's not saying that the boards would have to raise the wheels 18" though...the suspension's will also lift the car up.
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10-09-2020, 11:33   #59
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Thanks for everyone for your help.


Quote:
Originally Posted by jmreire View Post
I'd have no qualms about getting under the car with that kind of a set-up safety wise....but as already mentioned, its a little bit on the low side for comfortable working conditions. 18" between the ground ( or better ) would be fine for me. That's not saying that the boards would have to raise the wheels 18" though...the suspension's will also lift the car up.

I hope to try them out this weekend, so will see how I get on and report back!
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10-09-2020, 11:41   #60
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I personaly think your fears about axle stands used properly are unfounded.

I have used these axle stands for years, and fully extended under beetles I have worked on. And if you can topple these from below, then you can topple your blocks too.

And these are not the el cheapo versions that come from lidl/aldi.

Support stands are all about the base of the stand, the wider the better..
You would have to be the hulk to push a car, PROPERLY set up on these stands
I have these, https://ige.ie/3-ton-axle-stands-pair/

And i still dont like getting under the car. Have been known to throw wheels underneath just in case something goes wrong. Awful fear and rightly so around working underneath vehicles. Theres been enough poor soles have a vehicle drop on them.
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