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2025年04月26日 イイね!

Mechanical thermostat in Air-cooled VW

Mechanical thermostat in Air-cooled VWMost of the case, we didn't discuss about the existence of Thermostat at all even in the foreign air-cooled category. Though old Beetle's motor is so designed that cooling system is not liquid cooling but air-cooled, the parts, thermostat is equipped is equipped on the #2 cylinder fin. This mechanical construction controls air amount at first idle stage from closed to fully opened. As a matter for regret, this air controlling doors are kept fully opened because of thermostat failure leading to over cooled condition at first idle stage. This is why make it difficult to keep idle motor control. Most of air-cooled have some failed thermostat that is relatively fail, in addition, this parts never appear in the market, so grasp it without hesitation if you come across wherever and whenever it might be.
Consequently, idle speed control is not always depended only on the construction of choke controlling system installed in the carburetor body, this mechanism is controlled by coiled bi-metal heating electrically. I make it a rule to cut the circuitry at the beginning of first idle while cold season to extend warming up stage.
What I wanna say here is next stage to know the relation with idling stop tendency between BTDC 5 degree and TDC zero. As for my fortune telling, first idle will turn worse because choke control is done under advanced combustion condition. More investigation would be required on this point. This marvelous mechanical controlling system was invented by the German engineers over 50 years ago, interesting don't you think?
Posted at 2025/04/26 05:08:37 | トラックバック(0) | 日記
2025年04月25日 イイね!

Double diaphragm vacuum advancer

Double diaphragm vacuum advancerOnce the steering feel was far improved by lubrication, too sensitive accel feel was appeared up. I have been in the thought that distributor should be equipped both vacuum advancer and centrifugal one and they work well in harmony. Vacuum advancer react more quickly than mechanical centrifugal advancer, so the former one is indispensable to obtain smooth and sensitive accel feel. Consequently, BTDC 5 degree was applied as a common sense. Remembering past, I applied TDC 0 degree on the way back home from Kobe Transport Bureau, acceleration became better. The bad habit to have a tendency to cough and stall if accel pedal was pushed down too much. Consequently, I determined to think it over combustion timing consulting VW manual for '72 Super Beetle manual.

The diaphragm vacuum advancer equipped on 34PICT3 carburetor was so strange as to have double diaphragm, they are for advance and delay construction respectively! Also, dash-pod was set at idle stopper point to prevent sudden low down of rotation. Double diaphragm construction is aimed at keep ATDC 5 degree idle rotation. All of these measures are purposed for Anti Pollution exhaust gas controlling.

Judging from the vacuum control performance appeared in the manual, they always act antagonistically leading to no advance nor delay as a matter of fact.

According to the information from manual description, no vacuum control and centrifugal advance controlling only is done!

Then I close vacuum hose for advance only diaphragm activation with 5mm dia. brass material and the combustion timing was set at zero degree TDC. It means that only centrifugal advancer is alive from TDC 0 degree.

The impression of AD motor I have been in my mind for long time has completely revolved---now no complain at all! Bingo!!

No hesitation to push down accel pedal, no coughing nor stall down. Probably most of my elder brothers might know that 009 distributor has no vacuum advancer, this is why this one is so popular in US. A 10-year mystery has solved!

This description is done under happiest emotional condition.
Posted at 2025/04/25 22:08:43 | トラックバック(0) | 日記
2025年04月23日 イイね!

11AD steering gear box rubricant

11AD steering gear box rubricantExtraordinary resiting fliction on the steering wheel obliged me to feed hard gear oil. Though such kind of symptom was observed for long time ago, I thought the criminal of heavy steering must be caused by 15minites minus camber value instead of positive standard camber. Application of #90 gear oil wiped out all the strange and unpleasant reaction occurred in the steering gear box.The eye opening phenomena in my Super Beetle enhanced me to endure to keep this vehicle much longer.
Posted at 2025/04/23 18:08:09 | トラックバック(0) | 日記
2025年04月19日 イイね!

Civic RS arrived

Civic RS arrivedCivic RS arrived at hand to compensate a lack caused by sold Golf 7 GTI. Manual transmission and 40% profile tire are equipped standard. This model is so designed to meet with a bit softer suspension. But, from a geriatric standing point of view, too hard for daily use. This kind of driving taste is decided after several trials with desperate effort by the engineers in the specific division, so any changing or parts replacement by some another method are not preferable if we admire professionals. Tire pressure distribution might be permissible a bit?
Posted at 2025/04/19 23:07:49 | トラックバック(0) | 日記
2025年04月19日 イイね!

Old Tokina RMC 80-200/f4.0

Old Tokina RMC 80-200/f4.0While tidying the shelves, I came across with an old, cloudy zoom lens. I probably won it at Yahoo auction for 1 yen. It's a useless lens that doesn't let light through properly. It only captures images that look hazy.
Tokina RMC 80-200/f4.0. It has an in-tube zoom adjustment system and does not extend. The internal cam structure is simple and the movement is light. I disassembled it and wiped down the entire lens surface, and now it forms an image properly, transparently! It will produce a classic image that is different from modern recent products, so I'm looking forward to it.
I plan to take it with me for my next shooting journey.

Posted at 2025/04/19 17:17:31 | トラックバック(0) | 日記

プロフィール

「Difficulty in the establishment of wheel alignment http://cvw.jp/b/139985/46096876/
何シテル?   05/10 07:44
Kineboh! It's me!
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