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回复 4楼 bobhlu 的帖子
137机芯95年出世,经过15年左右了,这枚自制机芯还算是比较稳定的。不过有评测指出过这枚机芯存在摆幅过大的严重问题,能到340度,对机芯的长期走时是重大不利因素,数十年的长期考验才能真正体现一枚机芯的价值,比如劳力士超稳定的机芯。评测详见下文网址,仅供参考。
网址:http://www.worldtempus.com/fr/ac ... 11-btr-chronograph/
内容:
322 components: Ebel Caliber 137.
The rate can be finely adjusted via a Triovis adjustment mechanism. And Ebel’s watchmakers have obviously mastered the art of fine adjustment. The 1911 BTR Chronograph gained between one and two seconds per day on the wrist. This admirably accurate performance was confirmed by our timing machine, which determined that the average deviation was just +2 seconds with the chronograph switched off and +3 seconds with the stopwatch function running. The greatest deviation among the several positions was likewise very pleasing: just three or four seconds per day, depending on the status of the chronograph mechanism.
The 1911 BTR Chronograph has rightfully earned an official chronometer certificate from the COSC. … Only the amplitude, which sometimes exceeds 340°, is too high – so high that the balance is in danger of knocking, i.e. swinging so far in one direction that it strikes against the other side. Perhaps the barrel of our test specimen hadn’t been properly lubricated: this would cause the slip-spring, which acts like a friction clutch, to convey too much torque to the gear-train. The high amplitude, however, didn’t create any problems with the rate during a several-day-long empirical test on the wrist. |
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