Kinebohのブログ一覧

Thrust error has observed in NCP10 TOYOTA Vitz this morning, right side potential trend means minus thrust angle. Permissible range as it might be, plus minus 10 minutes following The European Automobile Standard, I dare correct it into zero, because the precise adjustment would obtain some completely different driving feel after that. Though the task would be very tiresome requiring desperate concentrations not to make any measuring errors nor adjusting ones, it would be always rewarded. Frontal geometric construction and wheel alignment had been settled last opportunity when the drive shafts, differential output oil seals and hub bearings had been replaced because of strange clicking noise generation. As a countermeasure, setting the wheel bases on both sides at the same value, hub case setting would be adjusted by inserting sim at joint surfaces between trailing arm and hub case promptly. It shows the thrust error all the time that unintentional steering wheel rickety while starting and stopping always combined with that. Thrust error and self steer effect are competing each other at those times. This is the point that I want to correct as aligned correctly. The tire wearing condition affects not a little on the thrust error, at least 100km running is necessary to set up the tire surfaces in newly applied physical conditions. This is why only an attempt could not achieve a final goal.

SXE10 TOYOTA Altezza still remains somewhat dissatisfaction probably because of lack of rear total toe value, around zero or minus, much more rear stability would improve comfortable driving. Precise scaling with Special Tools and adjustment is desired. Enhanced frontal stabilizer bush insertions, 2mm thickness soft rubber pieces must be removed, because the harshness after that is not favorable. Reduction of the frontal compliance by this attempt affect on the rear axle behavior in conjunction with frontal compliance change. Aishin-Seiki 5 speed automatic trans-axle is one of a completed form as a torque converter equipped one, so I appreciate. Needless to say that the trans axle mechanism is one of an indispensable element to achieve a good character and dignity of the model.

VW 1302 Super Beetle has acquired ideal steering stability, actual scaling on rear axle construction would provide ascertain contentment. Odor like antiques comes out from heater ducts? Duct cleaning from the entrance to exit inviting chemical material like some Kalki and mold removal would solve the problem, the same problem B-Vectra has. Now apparent residual disadvantage for Super Beetle is painting with a rusting a bit. As the 2 liquid type Urethane color, #54 Marina Blue is prepared for repainting, I should do that without any escapement.

NCP10 TOYOTA Vitz needs precise scaling and adjusting on rear torsion beam axle construction, probably sim inserting hub inclination adjustment would be performed. Camber and toe direction must be established with combinations. Description like this is easy but an actual procedure is complicated and hard to carry out on earth, because some calculations inviting trigonometric function is required. Additionally, shorter wheel base value in smaller automobile require more precise adjustment. The smaller the more difficult.

Minus 60 minutes front camber and minus 90 for rear alignment on XH200 OPEL B-Vectra might be too much inclination for relatively low speed traffic in Japan, on the other hand there must be some resistance and rolling friction occurring camber thrust effect on all the wheels. It too sticky in centric steering wheel position when I try to turn though the stability while straight running is solid and stable so much,30 minutes reduction on each wheel would improve steering comfort?

Minolta MC Rokkor 50/1,7 old lens for SLR camera in ancient silver salt period of time was disassembled to adopt on Canon EOS Digital body. Necessary adjusting room for the purpose was constructively observed on helicoid coupling portion. So, the foresight to compensate 0,5mm difference of flange back has established with relief. Lens element was removed from anterior direction as one piece. The construction of lens case was formed with aluminum alloy material, so all the 6 lenses formed Gaussian designing are easily removed to clean closed surfaces in case of emergency like mold invasion. On the other hand, the lens case of later MD lenses were made of engineering plastic, probably one piece plastic casting technology. So, it would be hopeless to disassemble lens case to clean glass pieces. The life of a lighter MD lens even with plastic helicoid construction would end when chronic mold invasion. As a conclusion, old metal case MC lenses are available as consumer durables.

Though the weather condition is not so favorable today because of coming across of Typhoon near to Japan mainland, I'm going out for taking photo to know the potentials of Minolta MD Rokkor 35/2,8 that was modified to adopt on Canon EOS Digital body. The comparison would be done with the second generation of Summilux 50/1,4 on M9, of course I know the condition of developing soft wears are different each other, Canon Digic and Kodak. Anyway I want to recognize again a famous the most unlikely and unparalleled high-dimensional spherical aberration correction between 1,4 and 2,0 in Summilux.

Old Minolta MD Rokkor lens could be modified to adopt on Canon EOS Digital body, so I did on Rokkor-W 35/2,8 utilizing EOS body cap made of engineering plastic. Some anxiety might happen on the bayonet flange connection because of viscoelasticity of plastic, there exists some light weight lenses with plastic bayonet connection, so a Canon genuine plastic body cap parts is applicable for bayonet lens flange connection. Some additional idea has come up in my mind, how about applying the same manner on standard 50mm MC Rokkor lenses that had been star actors while silver salt period of time about 30 years ago. Every camera maker exerted to make up ultimate performance on 50/1,4 as a flagship product. They had been introducing similar Gaussian design with symmetric 6 or 7 element. It might be very interesting to revive typical 50/1,4 on a recent digital image format?

Right side running tendency recommended on NCP10 TOYOTA Vitz last night, so existing minus thrust angle should be corrected after precise scaling by LASER equipped Special Tool. This unpleasant bad habit would be eliminated soon if the constructive designing is some easy-to-move position torsion beam axle construction.
Also the rear toe-in value should be scaled and corrected at the correct state.

I feel too much rolling friction resistance at rear axle portion on VW 1302 Super Beetle after the toe direction adjustment performed the other day, so precise total scaling and re-adjusting would be performed as a following procedure.

Also an opposite phenomena is observed in SXE10 TOYOTA Altezza after a thrust angle adjustment done a week ago, light and illusory feeling from the rear axle, the same manner would be done seeing some opportunity, probably the total toe should be around zero or minus status, so I guess.

Precise checking is required on BC7 SUBARU Legacy LSi US model, because some potentially presenting left side tendency is felt occasionally, as the tendency is very slight as to permissible, so, more precise procedure must be performed form the beginning of scaling wheel base alignments on both side.