Kinebohのブログ一覧

Yaris Z is disappearing and Civic RS is replacing. Spoon spring is too hard to endure for me, that would be returned into genuine parts soon. Remembering manual transmission that I experienced, lateral moving way of shifting "H" patterns were free, Familia Rotary Coupe and Air-cooled Beetle 1200. Consequently, I felt some resisting feeling on the construction of the transmission in Civic RS, the neutral sifting position is guided on the middle position between 3ird and 4th. So, I modified a bit by moving the end of returning spring position resulting in reducing the resisting power half strength. No complicated disassembling the trans axle itself, just the base portion modification was enough. Unnecessary muscle work done every shifting motion was reduced fairly, considerable improvement was observed as a matter of fact. As my pleasant matter, strut tower and bulkhead are connected mechanically, so firm construction. Unpleasant noise in cold start phase is discerned on the VTC actuator portion though rubber cover is applied.

As a matter of surprise, Blow-by gas combustion hose was not connected, between cum-cover and intake air way after air flow meter. Judging from the clump mark on the hose, so long period of time this condition was left undone. Deeper consideration led me the conclusion that measuring mal air volume imparting less air flow because of opened blow-by gas hose. Also, blow-by oil mist gas had been scattered in the engine room.

I'll come to know how the fuel consumption would be, better or not. Any way, different signal from the air flow meter would any transition to ECU. Former mischievous person did unusual attitude?

Spending all day long yesterday, I visited six tombs, 12 flowers were prepared for that. Driving Yaris Z with suspension spring harder modified, working fatigue was not so much as imagined. By the way, best designed setting by the manufacture's engineers cannot be exceeded by any layman tampering. The only way to make some customizing is minimize the constructive tolerance as less as possible.
The most effective element is thrust angle in the suspension construction. This proposition is relatively easily done if the measuring and scaling devices could be obtained if it is done by DIY.
Though some keen observation skill and concentration are required, driving feel changes apparently after the adjustment could be carried out adequately.
Computerized emission control and various safety system prevent an ordinary user to modify a secret in the black box.

Setting the thrust angle to zero minimizes sliding friction during driving, generating only rolling friction. This is because the forward and backward vectors are independent during driving, and aligning the directions of these vectors results in a thrust angle of zero. Normally, a car with a thrust angle will move in a circular motion without steering input, but the driver will perform corrective steering to maintain a straight line. At this time, the caster action of the steering wheel comes into play, reducing the measured thrust from the front by about half, making it difficult to notice. While thrust should be zero whether measured from the front or rear, it is possible for only one to be zero; in this case, the measurement from the front should take precedence.

Curiosity in the neutrally established centric position by EPS calibration led me to some direction. Because the centricity drifts a bit after the lain keeping function was applied. Of course I know that some increase of slipping resistance in the oblique running condition to keep straight run after EPS calibration is done. This conversation is prevailing in the thrust angle discrepancy within 2 to 3 minutes angle value. Very small displacement as the calibrated neutral steering position is, but keen concentrated attention can feel the drifting phenomena so clearly spoiling comfortable driving. Ordinary driver might not discern this kind of displacement or be deceived, he or she would not realize until the drifting phenomena should be focused with concentrated sensation. The field of researching and developing is interesting to come across with unknown phenomenon.