Gents,

I hate lifting anything out of my car, if done crude without care of pressure or loading points.

This kind of "cradle" is too crude for my liking. Looks like cement block.




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This kind of super table ( cradle ) at US$6,000 is too much, but is very very nice for engine works.




Since I am waiting for the rear subframe bushings to come and measure their diameters ( not the 2 + 2 subframe to body bushings ),
https://mbworld.org/forums/e-class-w...hing-tool.html

I decided to make the Jacking System & The Cradle.

I like calling it cradle, because when I ship yachts from Europ, USA or Hong Kong to Singapore, I paid good money for a good cradle.
Something like below but mine is mixed with steel beams.

Make a poor cradle, the fiberglass hull can crack from improper pressure point locations and lack of load spreading.


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The cradle. This is not final yet, as it will have 3 more support points. 1 for DIFF and 2 for rear side of subframe under its bushings housing.
Now with exhaust system in the way, I can't complete the 3 more support points.





The two Y shape supports are to be for these 2 locations:







The wood Y shape will rest of the subframe steel and not the arm bushing/bolt.









Exhaust is still there and blocking my work for the 3 other support points



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These are the "height" measurements.




Height clearance for subframe if pulled out towards the rear.




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The 2 Jacks I use are for motorcycle, same like below : ( supposedly rated 500KG or 1,100 LBS )




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I miscalculated the height of the jack base with wheels, by using 3inch caster wheel. It is too tall by 4cm, as per my calculation. I am using only a Quick Jack and not a 2 Post Lift, so my car rise up height is limited.
Anyway, I now have 2 version of the jack base with wheels for different task.




3 inch caster wheels





1 inch caster wheels. I use 8 pcs per jack, to spread the load. These are supposedly rated 30Kg per wheel. I tested 4 wheels and me at 69KG sitting on the jack playing on it like a kid
on a DIY skateboard , the wheel smoothness is not bad at all.





Damn....... David and Goliath.





100KG load test. Spin and raise.



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120kg load test ( 6 tanks ) and I 69KG was lying on top of the 6 tanks for a while. LOL




Height clearance calculation





So far so good..............


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I am enjoying this DIY actually. I am so bad with cutting wood. Often not very straight hahaha.
I use this :









End of Report.