Did much today

The criminal in BC7 SUBARU Legacy LSi US model that have been suffered me from establishing Zero Thrust adjustment for over 20 years has found out at last! This was cleared after the thrust angle adjustment ignoring scaled datum just based on my 6th sense while actual run attempts. After establishing the thrust angle to go straight, minus angle was imagined by means of see through tire outer surface method, it means that left side run tendency caused by another reason is compensated by distorted thrust, so it goes straight but with twisted body clockwise direction, we often say the phenomena as "Crab Run". Also careful wheel base scaling proved the discrepancy, right side is longer than left with 2 mm value. On the other hand, frontal transverse link(lower arm is called so among SUBARU engineers) rear compliance bush case is mounted 2 mm anteriorly. As a conclusion today, frontal main bar must have been mounted twisted counter clockwise direction. The positioning correction of the frontal main bar would be an exiting task for tomorrow.

Our business use family vacuum cleaner became out of order the other day and repaired safe as mentioned, but careful checking revealed that there exist much water in the pipe way of the system. As the professional vacuum motor and pump system is constructed with separated design, motor and pump are connected with driving belt, so vacuum air flow does not pass through inside of the operating motor. No anxiety exist on invasion of water into the motor, so far as this professional use designed system. Though we had a professional use vacuum system as one of our equipment, but the terrible noise and vibration problem occurred from a neighbor. This is why we invited a family use vacuum cleaner as an alternative. Any tear drop of water is inconvenient for DC motor operation, especially for driving main shaft supporting bearing lubrication and armature sparkling portion. As a cylindrical shape plastic box shown right side is designed as a water dust trap, so I use this as water falling down trap in the moistened air way. Judging from a experimental trial, it would play good as our intentional trap. In addition, DIY AC voltage controller(left) is invited to avoid over-working of the motor to meet with original set dust indicator action, probably 75V/100V is the setting point here.