Weishi washi

[gary17]

Hey

I am trying to make head nor tail about using this weishi machine.

Can some one look at these pics and tell me if this is a good reading or bad.

The movement is a valjoux 22 chronograph from 1937 and keeps great time.

I used this watch because it is such a good time keeper as machine suggests.

Butrlooking at the readings the watch is in a terrible state.

cheers

gary

[watchweasol]

hi Gary   Have a look at the attached, there is a section on the screen print ther is also a lot of other information...   the Weishi is just the chinese version of the witschi.. check out you e-mail   cheers

Witschi Training Course.pdf

[Klassiker]

Hi Gary,

You mean the watch keeps good time when worn? How good?

Why have you posted multiple images? Are they of different positions?

Approx. 150 deg. is low amplitude. Was the watch fully wound? Was the chrono. running?

[nickelsilver]

I had an Omega auto (forget the caliber) I bought and wore for a few months before deciding to check under the hood. It was within about 5 seconds/month, amazing timekeeping. Put it on the Witschi before servicing, had about 200 degrees of amplitude and a timing delta in 6 positions of well over 100 seconds. After service it had healthy amplitude, and a delta under 15. Never kept time as well though! Maybe 30 seconds/month (still fantastic, but it was almost "magic" before).

[gary17]

Yer

All 30 sec time gap watch was running watch all in same position

[spectre6000]

Mayhap it's like nickelsilver is hinting at. It's possible your positional error rates more or less cancel each other out. The numbers aren't great, it probably needs a service, but it may be like Mr. Burns (may be a US reference only accessible to a certain age group...). He has all the diseases known to man, plus three new ones, and they're all keeping each other in check. If they fix one ailment, all the rest will come crashing down and kill him. Poor amplitude, high positional error, rickets, etc., but it all works out.

Edited July 1, 2020 by spectre6000

[JGrainger]

It seems like a "spot the difference" quiz - if those pictures are different positions then it looks pretty consistent (good).. sometimes it can be surprising how different a watch seems to wear vs on the timing machine. The amplitude (is low) and rate (slow) otherwise suggest it would benefit from a service (not so good).

I'm presently wearing a 7 jewel pocket watch which is beyond economic restoration.. having suffered some bad past repairs, shows wavy traces, slightly poor amplitude after swapping to a new and stronger mainspring, and poor positional consistency.. taking it off at night, and wearing during the day, It's gained 1 second over the past 4 days (this is more luck than my skill).

Edited July 1, 2020 by JGrainger
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