Hermle clock problems with chime train

[LittleWatchShop]

2 minutes ago, oldhippy said:

These modern ones are expensive rubbish

I think I agree

[watchweasol]

Hi. The modern day clocks are built from different levels of brass and steel in order to cut costs and increase the profit margin , I have said before  the buying public are wowed by the look of it  aka fashion watches selling at 100 s of pounds all swish and nice powered by a Hattori plastic movement costing a few quid at most. Modern clocks are no better. You could put the best movement possible in a crappy case and it wouldn’t sell well.  Unfortunately it is the modern way, don’t like it but we have to accept it .

[RichardHarris123]

Are there any reasonable priced modern clocks?

[oldhippy]

33 minutes ago, RichardHarris123 said:

Are there any reasonable priced modern clocks?

What do you call modern? 

[RichardHarris123]

28 minutes ago, oldhippy said:

What do you call modern? 

Brand new. 

[rjenkinsgb]

18 hours ago, LittleWatchShop said:

I think I am going to hit it with a little heat unless someone objects

Try manually running a narrow strip of thin paper or aluminium foil though between the wheel and the vane pinion & see how deep and sharp the impression is?

How sharp (or not) it corrugates the strip should hopefully allow the actual meshing depth to be seen?

[oldhippy]

5 hours ago, RichardHarris123 said:

Brand new. 

Absolutely nothing.

[oldhippy]

18 hours ago, RichardHarris123 said:

Brand new. 

I just thought of one. Sinclair Harding but be careful there are fakes. 

[LittleWatchShop]

Back in my other shop with all the parts of this clock. Look at the difference in the chime and strike pinions.opinions.

Manufacturing flaw??

[RichardHarris123]

To me, it looks like you're comparing orange's to apple's but as stated, I know little about clocks.

[oldhippy]

Is it the same model?  

[LittleWatchShop]

26 minutes ago, oldhippy said:

Is it the same model?  

Same clock

[Dell]

If you look the pin wheel & fly pinion are different from chime side  to strike side have you got them mixed up ?

Dell

[MikeEll]

Which model Hermle movement is it?  I've just grabbed some pics below from a couple of 340/341 movements I had lying around.  The strike side fly pinion is distinctly different from the chime side.  Can't say I've noticed before, as I think the shape of the fly blades prevents them from being interchangeable.

Please ignore the filthy pinions, these are spare movements that I havent touched yet :-).  

The first two pics are strike-side flys with a shorter, stubbier pinion. The second two are the chime flys, with longer, slender pinions. 

14 hours ago, LittleWatchShop said:

Back in my other shop with all the parts of this clock. Look at the difference in the chime and strike pinions.opinions.

Manufacturing flaw??

So this picture from @LittleWatchShop shows the chime fly fitted to the plates, and the strike-pinion loose for comparison.  They look the same as the movements I have, with the exception that the teeth on this fly pinion don't look finished all the way to the end.  Not that it would affect the running of the clock as the wheel meshes at a point where the teeth look good.

Edited March 24 by MikeEll

[oldhippy]

2 hours ago, Dell said:

If you look the pin wheel & fly pinion are different from chime side  to strike side have you got them mixed up ?

Dell

Good point Dell that is why always use tubs to keep the parts separate. 

[LittleWatchShop]

Here is a closeup of the chime fly pinion. Notice the shape of the pinion left to right. Starting on the left with a larger outside diameter and then growing smaller as you move to the right.

If the pinion were consistent the left diameter, it would probably work.

I do not know which model this is because it is branded Seth Thomas on the plate.

6 hours ago, Dell said:

If you look the pin wheel & fly pinion are different from chime side  to strike side have you got them mixed up ?

Dell

I will check.

6 hours ago, Dell said:

If you look the pin wheel & fly pinion are different from chime side  to strike side have you got them mixed up ?

Dell

I will check.

Dell wins the day!

When I disassembled the clock, I intentionally kept the chime and strike side separate as I always do. I must have screwed up along the way and the warning wheels got switched.

The problem was compounded by me taking only part of the clock with me to my other location, limiting my ability to make comparisons.

At any rate, it is a screwup, no way to sugar coat it.

[MikeEll]

1 hour ago, LittleWatchShop said:

 

 

The pivot mounting lug looks well chewed up in this picture.  I suspect the pivot hole isn't at the correct position for the gears to engage properly, and needs to be reset to the correct depth with a depthing tool/manual adjustment.  From my pics above, this looks like a chime fly pinion and looks to be in the correct position (strike or chime) in your earlier comparison pic.  

@LittleWatchShop can you share a picture showing the full rear of the movement, please?

Edited March 24 by MikeEll

[LittleWatchShop]

[MikeEll]

yeah, that's a Hermle 340-020 movement (https://www.cousinsuk.com/product/hermle-340020-a).  I have one here on my bench.

Edited March 24 by MikeEll

[LittleWatchShop]

Ok, I have it all together and running. Well, except for one c-clip. Damn things.

What kind of amplitude should I expect?

 

[MikeEll]

Looks perfect.  I’d expect the impulse jewel to go at least 180 degrees past the neutral position, which it looks to be doing.