B-Vectra in "Zero Thrust"

Probably about plus 5 seconds discrepancy of thrust angle in XH200 OPEL B-Vectra was adjusted by moving trailing arm hinge position utilizing newly constructed special device yesterday in the busy interval of the moving. Of course the stability has been much improved though I had been in the contentment before that. Then what will happen if "Zero Thrust" condition might be established? I know that the fact of self center seeking capability so designed is caster angle, including it the Steering Axis Inclination in addition plus scrub setting, but above that, "Zero Thrust" is worthy for achievement. I have realized the resulting facts again and again after adjusting the rear total toe directive vector to the Zero point. Remember here that the adjusting procedures are performed under the condition of moving squishy, it's just like shaping a octopus form into that of a squid. Accomplishing the accuracy of 10/1000 mm is a very difficult task and needs some experience and tips, in the complicated environment with uncontrollable atmosphere.
It took me over 10 years period of time with doing hard. This is the desire from my younger age, so the sense of accomplishment of this work is greater for me.

When the steering centric repositioning work was performed, found I some critical fault on the steering tie rod end ball joint boots, cracks and packed lubricant grease comes out. As the temperature inside of garage exceeds 40 degree celsius now, it would be done early tomorrow morning immediately after done. Of course, the joint rubber boots would be replaced on both sides. I hope the ball joint mechanism is still alive with no rusting. This kind of steady maintenance makes old car lasts longer and longer. Though knuckle ball joint boots replacement requires much efforts, in case of tie rod end boots not so much.

My house name plate invested in a stone gate post would be removed, it might be a troublesome work. Long lasted villa supporting me well would be removed and the land would be kept for our next generation as a vacant lot. Though there is no way in the change of era, feel a loneliness of vague these days.