![]() It is a real pain to clean this tar off everything and is one of my least favorite jobs - it gets everywhere: on your tools, bench and hands. In the latter case, it is quite serious and often gets onto the tuning fork and coils and stops the movement it can also find its way onto the dial. ![]() After 40 years, the case back gaskets either go very hard or they turn into liquid rubber / tar. Obviously not restricted to Omega f300 watches and is probably a common occurrence in many 1970s watches. Or more specifically, rubber case back gaskets that turn to a gooey mess. And a spinning second hand does not always indicate a worn index wheel it can also occur if the index pawls are poorly adjusted. On a well worn index wheel, the second hand will sometimes spin forward or backwards when winding the hands, but by this stage, the index wheel is probably useless anyway. They are lots of stories about never turning the hands backwards on an f300 because you’ll strip the teeth on the index wheel - rubbish. But they do wear out and loose their teeth, especially if the pressure of the indexing pawls is too great. Nothing inherently wrong with the f300 index wheel it is as fragile as the ones found in Accutrons. So while you might use a little solvent to clean the jewels on the end of the indexing pawls, it is best to keep it well away from the coil assemblies! Those are the two main problems out of the way and the remaining list are things that I often come across when repairing these watches. The cream coloured plastic used for the coil / electronics moldings will soften and dissolve in solvents often used by watch repairers. I have a question that may or may not be relevant in this forum, so I apologize if I'm not in the right. Much less often, the transistor fails but this is usually always due to battery corrosion and is very visible. Hi guys, It's my first post in the HEQ subforum. But on the f300 coils, there is often no sign of why they have gone open circuit - it’s a mystery. Casio - CasiOak, Blingshock Citizen - Promaster Tough Dekla - Bronze Flieger B Dial DIY Watch Club - Diver Garmin - FR245 Music Grand Seiko - Snowflake Longines - Master Collection (L2.673) Monta -Triumph. The coils on Bulova Accutrons (cousin to the f300s) also fail but on these, the reason is usually visible and is often caused by either physical damage or battery corrosion. I think there's better value in FC but both have some great pieces. By “fail”, I mean there is a break in the windings and they then read as open circuit on an Ohm meter. CASE: SLEEK AND SEXY ALL-STEEL CASE MEASURING A. (There was an HMT e-commerce site up last year, but they don't ship to the US.They fail and often for no apparent reason. FOR SALE IS A SUPER RAD NEAR MINT 70s TITUS TUNING FORK ELECTRONIC GENTS WATCH WITH STUNNING HOBNAIL DIAL. One of the thread members made a trip to the factory store last year, and later sold me some really fantastic watches for about $45 each, complete w/B&P, which I gave to my team at work as Xmas gifts.Īn original authentic HMT is a great addition to anyone's collection. Condition: Watch Case is Good Condition But Dial color is Faded Form some places, Im Selling as it Measurements: Case Width is 35 mm Case length is 42 mm Case thickness is 11 mm Lug Width is 18 mm Normal Shipping 14. HMT recently had two retail stores open, one in Bangalore near the original factory, and they sell NOS watches. Several members live in India, and have eagle-eyes for spotting re-dials and frankens. There's a great HMT thread in the Affordables Forum. I took it apart for fun, and it had an ETA logo stamped on the movement, but it was definitely a Miyota 0201 clone. One late night I saw a vintage Roamer watch and ordered it without really thinking, and the crown came out in my hand the first time I tried to set the time. The other brands - I recently spotted a "NOS vintage" Oris for $19 - are fakes and absolute junk. The Mosaba (montres sans balancier) technology was created by Max Hetzel, who invented the Bulova Accutron and developed it between 19. So you'll get a watch that is at best a refurbished HMT, at worst a franken-watch. Mosaba was the name for a family of tuning fork movements from Ebauches SA, produced between 19. When you see HMT watches for $17-$30 on eBay, plenty of them will have the original movement, which is pretty sturdy, but nearly all are re-dialed, or dials re-painted, or entirely re-cased. HMT also manufactured Citizen-branded watches for the Indian domestic market through the 1980s. ![]() The wrist watch division started in the late 1950s as a partnership with Citizen, so most HMT mechanicals use the HMT Caliber 0231, a clone of the workhorse Miyota 0201 17-jewel movement. HMT (Hindustan Machine Tools) is a fascinating company that makes farm tractors and machine tools, and also - though now shuttered - wrist watches. ![]()
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