Movement Identification - Bovet

[mcoulton]

Hello

Does someone know what type of movement this is? It can out of a Bovet military watch but I don't think its a Valjoux or a Landeron. I haven't taken the dial off and looked on the other side of the movement.

Thanks in advance for any help that can be provided.

Michael

 

[Nucejoe]

 Looks very much to be a  FHF70. 

 

 

[oldhippy]

Agree. Here is the Ranfft link.

http://www.ranfft.de/cgi-bin/bidfun-db.cgi?12&ranfft&0&2uswk&FHF_70

[Nucejoe]

I wonder what grade this movement is? 

[oldhippy]

Its not shockproof. Its just a standard movement. A simple one to practice on. 

[rogart63]

18 minutes ago, oldhippy said:

Its not shockproof. Its just a standard movement. A simple one to practice on. 

But i see a Incabloc spring. So must be shockproof . Never seen a FHF 70 with center second attachment? 

[oldhippy]

18 minutes ago, rogart63 said:

But i see a Incabloc spring. So must be shockproof . Never seen a FHF 70 with center second attachment? 

 Where?

 

19 minutes ago, rogart63 said:

But i see a Incabloc spring. So must be shockproof . Never seen a FHF 70 with center second attachment? 

 

[wls1971]

It does have shock protection:

[oldhippy]

2 minutes ago, wls1971 said:

It does have shock protection:

Sorry yes you are correct. I was looking at the one in the link I posted. Looks like I'm going to have one of those days. 

[Nucejoe]

1 hour ago, rogart63 said:

But i see a Incabloc spring. So must be shockproof . Never seen a FHF 70 with center second attachment? 

Many variants to fhf70 with different bridge layout were made, namely inderctly driven min hand, then this with center second cock and your regular sweep second with min wheel incorporated inside ebauche. 

Its ancestor fhf30 and on, were mostly sub second versions.

Almost every manufacturer put some versions in their watches,  some were in-house and high grades , Rolex did too. 

 

[watchweasol]

Hi  If you are servicing it this might be handy.  Attached tech sheet.

2943_FHF 70.2N,701.2N.pdf

[mcoulton]

Thanks to everyone for their responses. You've been a big help. Here are two more pictures of the time piece I'll be servicing. The crystal more than likely will need replacing as will the stem. I can't put any power into the movement as the click won't sweep fully to allow the crown wheel to turn.

Questions:  1.) Does my watch come with a seconds hand? I'm not sure if it does or if it uses a sub seconds which the dial doesn't accommodate.

2.) Are all seconds hands sized the same? I don't mean the length, I mean the pinion that they are secured to on the fourth wheel (?), is it the same for all seconds hands? Hope that makes sense.

3.) I'm thinking of buying an assortment of ETA watch stems, will I find a stem that fits this movement or do I need to search for a fhf70 movement specific stem. 

4.) What is the best parts source for this movement; Cousins, Gleaves London? 

Thanks in advance for any help that can be provided.

Michael

[Marc]

11 minutes ago, mcoulton said:

1.) Does my watch come with a seconds hand? I'm not sure if it does or if it uses a sub seconds which the dial doesn't accommodate.

There appears to be a seconds hand pinion in the middle of the minute hand hub, and the movement shows a cock and tension spring for a center seconds pinion.

 

11 minutes ago, mcoulton said:

2.) Are all seconds hands sized the same?

No. You can measure the end of the pinion with a micrometer to determine the correct size.

17 minutes ago, mcoulton said:

3.) I'm thinking of buying an assortment of ETA watch stems, will I find a stem that fits this movement or do I need to search for a fhf70 movement specific stem. 

No. You will need the correct stem for this movement, which may be common to other FHF calibers in the same family, but very unlikely to be common with any ETA stems. If there is enough thread left on the broken stem you could use a stem extender.

19 minutes ago, mcoulton said:

4.) What is the best parts source for this movement; Cousins, Gleaves London?

Cousins certainly seem to have a comprehensive stock of FHF70 parts.

You may need to get a more positive ID for the movement. Ranfft lists the FHF 70 as a sub-seconds movement but yours has a sweep seconds hand. It is definitely part of the same family as the 70, but some parts will differ from the sub-seconds 70.

[rogart63]

There is one large problem. The third wheel is missing the pinion and the extra wheel that should drive the second pinion . Not easy to find. I can have a look in my box of old movements . Maybe cousinsuk have it? 

[mcoulton]

Thanks very much for the responses. I believe the next step will be for me to dismantle the movement and have a look. I have a list of items I want to order from Cousin's and if I can figure out what I need from this watch then I'll include them in this order. 

Thanks

[mcoulton]

Hello

I've stripped down this movement and have noted the markings. Can someone please clarify the type of movement based on the photo I provide? Is it a FHF I75 (as is i75) or a l75 (as in L75). I'm also having a little difficulty in figuring out the size for the second hand. I measure the pinion (?) at .30mm (second picture). Does that sound correct? 

 

Thanks

[Poljot]

FHF 175

Hands
1.40 x 0.70 / 0.21mm

 

Edited November 28, 2020 by Poljot

[watchweasol]

Agree 175

 

[rogart63]

21 hours ago, Poljot said:

FHF 175

Hands
1.40 x 0.70 / 0.21mm

 

That isn't 100% sure as it's a center second version of this movement. FHF 175 has normally subsecond 

This is how the movement should look. 

[rogart63]

You need the sweepsecond wheel if you don't have it. That you can buy for the FHF175-3 movement. 

[Nucejoe]

Just stumbled upon this old thread , must have left the discussion and didn't bother to revisit.

FHF 175 came in two versions, subsecond and sweep second . In subsecond version the minute hand is incorporated with gears of the train under gears bridge, has a long arbour that protrudes through the dial plate for the subsecond hand to mount on. 

The sweep second , however, has short arbour on 3rd wheel and sweeps through centre of dial plate. 

Google fhf175 to see image of both versions.

Rgds