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Gear train question "Click" to Login or Register 
posted
This may be a new guy question, but are there two types of gear trains in the 992Bs? I have a watch that has a fourth wheel that doesn't match the rest of the gear train, cosmetically. I've included a picture. The fourth wheel has a round top to the spokes, while the rest of the gear train is flat on both sides. I couldn't keep the watch running, until I finally substituted another fourth wheel that was flat on both sides matching the rest of the gear train and now it runs without a hitch. I think I see a difference in the teeth, but I'm not sure. Could someone enlighten me on the subject? Thanks.

 
Posts: 54 | Location: Minnesota in the USA | Registered: June 26, 2013
IHC Vice President
Pitfalls Moderator
IHC Life Member
Picture of Edward L. Parsons, Jr.
posted
You are right John, this is a question that has been asked and answered MANY times in the past. The round spokes are a result of a casting used to make the 4th or center wheel.

The first 992B center wheels were cast, gold-plated and highly polished to give them the look of a solid gold center wheel. Around movement number C118000, the gold plating was dropped and later so were the castings, so the center wheels were stamped out of flat stock like the other train gears. This results in a rectangular spoke cross section.

Next time please try the find-or-search function before asking questions.


Best Regards,

Ed
 
Posts: 6696 | Location: Southwestern Pennsylvania, USA | Registered: April 19, 2004
posted
Sorry Ed,

I tried a search and didn't hit anything. Must not have used the right words. Thanks for the help.

John
 
Posts: 54 | Location: Minnesota in the USA | Registered: June 26, 2013
IHC Vice President
Pitfalls Moderator
IHC Life Member
Picture of Edward L. Parsons, Jr.
posted
John,

I give you credit for trying, but you probably were too specific in your search terms. Here's what I got searching on "992B center wheel" from the main page, which contains the answers to all your questions:

Search Results

Using search terms that are too specific is a common newbie mistake. Over the years terminology undergoes subtle changes and different people use different terms to describe the same thing, so you'll have better results if you keep your searches to a slightly more general topic area than the exact detail you are looking for.

You'll have to sift through more replies this way, but the key information you are looking for is much more likely to be there.


Best Regards,

Ed
 
Posts: 6696 | Location: Southwestern Pennsylvania, USA | Registered: April 19, 2004
Administrative Assistant
Picture of Dr. Debbie Irvine
posted

Hi John,

When I used the "Find Or Search" feature typing in the words "gear train 992b" the following came up...

gold train 992b

and when I went into this topic titled:

Gold center wheel info wanted on railroad watches

which provides links to other topics.

I don't know if any of these additional links help you or not.

You can also type is other key words to bring up previous topics! Smile

Debbie

Smile
 
Posts: 5203 | Location: Northern Ohio in the U.S.A. | Registered: December 04, 2002
IHC Member 1610
Picture of Harry J. Hyaduck Sr.
posted
John don't feel bad. When I started searching my results would not turn up anything and I got the same help as you just got. My searches still are not as good as these old pros but they are getting better.

Good luck,
Harry
 
Posts: 3850 | Location: Georgia in the USA | Registered: September 22, 2011
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