Don't really follow you Jan..
About the thickness, can't go thicker because than it would block some of the bolt/nuts required to disassemble the lower half.
Regarding the model. Yeah super lucky with this. Some french guy drew his entire XS tracker. The amount of details are crazy. It's open source and you can find it on grabCad. I just used his model
Dont have CAD here that quickly ..Trying to put it in words in Bad English
Mechanics statics --- has 2 aspects Force equilibrium and Moment. equilibrium
Illustrating with a game the big boys in the excavator shop had selecting the men from the boys .
Not many could do it. Few tried
A sledge hammer is standing on the shop floor with the handle vertical hammer head at the floor
Kissing the sledge the game was called .One grabs the handle at the top and with your wrist turns it backwards .In a circle
The hammer has the same weight all the time but at the point 90 degrees out back one has to have very strong hands and wrists
It is because the hammer head is extended backwards about one meter
I dont remember what sledge it was 8 - 10 Kg
Lets say for the reasoning 8 kg For equilibrium the force to keep the sledge up is the same 8 kg + the handle but the Torque the wrist must handle is
1m x 8 kg. The torque is less in every other angle because the torque arm length is smaller
At the starting point not much wrist strength is needed . Nor at the end when the kissing of the sledge is done
If one did not have strong enough hands one could not control the motion and the hammer head can hit your face and teeth ( over the shoulder )
and one has to abort get the face out of the way to the accompanying laughter of the collegaues with words. Shouted.
Some of the big boys can do it but not many.
I am not even close myself.
So the point
The motor for equilibrium wants to rotate around the pivot point the hand in the sledge hammer game .. and the force needed upwards is the weight of the motor ..
But the torque arm is between the center of gravity to the rotation point .. If that is larger a large Torque is needed,
If i get this right here it will be about 300 mm between the center of gravity and pivot point
I cannot do it with the Kissing the sledge hammer but I do it with smaller hand sledges as a workout For strengthening the wrists. At times
If you grab a hammer say 1. 5 kg hold it verticallly with the hammer head up 12 o clock and then slowly rotate it clockwise.
You'll notice at 3 o clock it takes more strength to hold it there .
If i get this rigt the same Phenomena with the engine stand the longer the distance between the Pivot point and center of gravity the larger the moment at the pivot point..( Strong hands ) Inserting more load.