Regula 25

[TimeafterTime]

Im interested in knowing when reassembling a Regular 25 movement does the 2nd wheel strike wheel which has the double lobes on it. I need to know which position it should be when vertical or horizontal when putting the movement back together.

 

[Willie X]

At normal stop, the cam you mention should be in the 'do nothing' position. And (on the front) the little lifting pin should be dead center of the gullet in the heart shaped gathering pallet. It should not start up the ramp on warning.

Also, the hammer and bellow lifting tails should look like this. If not, the set screw on the lifting wheel will allow adjustment on the main-wheel shaft. If the movement is post 1976 the lifting wheel is pressed on and adjustment can only be done by remeshing the main-wheel. Willie X

 

[JeffG]

If I remember correctly, Steven Conover's book on cuckoos suggests reassembling the strike train with one of the lobes at 11:30 as seen from the back (assuming the top of the movement is noon) and the warning pin at 12 o'clock as a place to start.
-Jeff

 

[lwalper]

. . . or it will cuckoo backwards — like mine did. That took some head scratchin'.

 

[John P]

Those lobes should be level with the plates as in 3 oclock and 9 oclock. Pin should be centered in gathering pallet and stop wheel pin touching lever. (Cuckoo repair manual)

 

[JeffG]

I did not remember correctly.
It is William J Bilger's book that suggests the 11:30/5:30 lobe position and pin at 12:00 for reassembling the plates. This is assuming a complete teardown when there is not yet a GP or stop lever installed for reference.
-Jeff

 

[dperry428]

At normal stop, the cam you mention should be in the 'do nothing' position. And (on the front) the little lifting pin should be dead center of the gullet in the heart shaped gathering pallet. It should not start up the ramp on warning.

Also, the hammer and bellow lifting tails should look like this. If not, the set screw on the lifting wheel will allow adjustment on the main-wheel shaft. If the movement is post 1976 the lifting wheel is pressed on and adjustment can only be done by remeshing the main-wheel. Willie X

View attachment 712018

With the new lift wheels, I broach the brass hole to an easy slip fit, drill and tap a hole in the side of the brass collar and put a set screw in it; i.e. make it like the old ones. Helps out the future repairman.

 

[TimeafterTime]

At normal stop, the cam you mention should be in the 'do nothing' position. And (on the front) the little lifting pin should be dead center of the gullet in the heart shaped gathering pallet. It should not start up the ramp on warning.

Also, the hammer and bellow lifting tails should look like this. If not, the set screw on the lifting wheel will allow adjustment on the main-wheel shaft. If the movement is post 1976 the lifting wheel is pressed on and adjustment can only be done by remeshing the main-wheel. Willie X

View attachment 712018

I'm trying to figure out the do nothing position for reassembling the movement. As I read below, there's some discrepancies in where to locate the lobes.

 

[Willie X]

The "do nothing" position is the position where the cam is not doing anything. Willie X

 

[Willie X]

Just checked a few including one new one.

Looking at the back of the movement, the flat part of the 'birdie perch push out cam' is at about 9:45, with the high side to the left. The cam has two purposes: first to push the birdie out and then imediately force the latch down to lock it. (here is a pin on the latch that is knocked down by this two lobe cam to fully latch the birdie in the out position.

There is an internal lever on the front plate that is struck downward when the rack drops at the last cuckoo call. That unlatches the perch latch and allows the birdie to snap back in but that won't happen if the cam has gone one tooth to far clockwise.

IMO, this is one of the most complicated Mickey Mouse mechanisms in clockdom but fortunately it gives very little trouble!

Willie X

 

[POWERSTROKE]

1:30 and 7:30 o'clock looking through the front plate.
On a Herr the lift cam goes directly below the line at 3 o clock looking at the back.

 

[Mike Mall]

It's near impossible to get a good photo - here's the best I could get highlighting the cam at the stopped position.

 

[Willie X]

That's going to be close. Willie X

 

[TimeafterTime]

I got conflicting responses as you can read above. I've gotten the lobes should be at 9:00/3:00 and 11:30/5/5:30.
Can anyone verify these positions?

 

[Dick Feldman]

Me thinks that if you put it back together wrong and it does not work, it can be a valuable learning experience.
You only have to take it apart and try again till you get it right.
If you learn that way, you are likely not to forget.
It will probably be a good reminder to take before photos, and to pay attention.
Dick

 

[John P]

What Willy said is right.
I just finished rebuilding a regula 34. I set the lobes at 9 and 3. After installing the movement back into the case, I noticed the bird door start to open when the warning runs. This caused a stall at times. Back out with the movement to move the position of the lobes to 9:45. This allowed some free run time before pushing open the bird door. Learned something new.

johnp

 

[TimeafterTime]

With the new lift wheels, I broach the brass hole to an easy slip fit, drill and tap a hole in the side of the brass collar and put a set screw in it; i.e. make it like the old ones. Helps out the future repairman.

I guess manufacturer's look anywhere to cut a penny. That's great you do that.

 

[TimeafterTime]

What Willy said is right.
I just finished rebuilding a regula 34. I set the lobes at 9 and 3. After installing the movement back into the case, I noticed the bird door start to open when the warning runs. This caused a stall at times. Back out with the movement to move the position of the lobes to 9:45. This allowed some free run time before pushing open the bird door. Learned something new.

johnp

That's exactly where i'm at. The door is opening to early.

 

[POWERSTROKE]

1:30 and 7:30 looking through the front plate. A Herr is at 3 o'clock looking at the back plate. I've done hundreds of cuckoo clocks

 

[POWERSTROKE]

I don't take the starwheel off if the pivot hole isn't worn.