Introduction
Ansonia 8-day clocks use a count wheel strike system that depends on precise alignment of the stop pin, count wheel slots, and lever positions. If any component is out of position, the clock may strike the wrong number, fail to stop, or jam during the strike cycle. This guide explains how to set up the strike train correctly, how to position the count wheel, and how to protect the pendulum rod and spring during movement handling.
Understanding the Ansonia Count Wheel System
How the count wheel controls strike
The count wheel has deep and shallow slots that determine how many times the hammer lifts. When the lever drops into a deep slot, the strike train stops.
Role of the stop pin
The stop pin halts the train at the end of the strike cycle. It must align with the stop lever at the exact moment the count lever falls into a deep slot.
Warning and run behavior
Before striking, the train enters warning. The count lever must be lifted clear of the wheel so the train can start cleanly.
Why alignment matters
Incorrect alignment causes over‑striking, under‑striking, or continuous running.
Protecting the pendulum assembly
When removing or adjusting the movement, shield the pendulum rod and spring to prevent bending or twisting.
Setting Up the Count Wheel Strike
Step 1: Bring the train into warning
Advance the minute hand until the strike train enters warning. The count lever should lift off the wheel.
Step 2: Position the stop pin
Rotate the second wheel until the stop pin is just about to contact the stop lever. This is the correct stopping point.
Step 3: Align the count wheel
Rotate the count wheel so a deep slot is directly under the count lever when the stop pin reaches its stopping point.
Step 4: Test the drop
Advance the minute hand into the strike. The count lever must fall cleanly into the deep slot at the end of the strike cycle.
Step 5: Verify repeatability
Cycle the strike several times to ensure the count wheel stops correctly on every hour.
Fine Adjustments for Reliable Strike
Check count lever depth
The lever must fall deeply enough into the slot to stop the train, but not so deep that it binds.
Check stop lever clearance
The stop lever must meet the stop pin cleanly without bouncing or slipping past it.
Check hammer lift timing
The hammer should lift smoothly during each strike and reset fully before the next lift.
Check wheel endshake
Excessive endshake can cause inconsistent stop‑pin alignment.
Check for bent levers
Even slight bends in the count lever or stop lever can cause misalignment.
Testing the Strike Train
Run through all 12 hours
Advance the hands manually and confirm correct strike count on every hour.
Check for hesitation
The train should start immediately after warning and stop cleanly at the end of the cycle.
Check for double‑striking
If the train restarts after stopping, adjust the stop lever or stop pin position.
Check for premature stopping
If the train stops before completing the count, the count lever may be dropping too early.
Protect the pendulum rod and spring
Ensure the pendulum assembly is not disturbed during repeated testing.
Troubleshooting Flowcharts
If the clock over‑strikes
Check stop pin alignment → Check count lever depth → Check count wheel position → Check lever bends
If the clock under‑strikes
Check count lever drop → Check deep slot alignment → Check stop lever timing
If the strike runs continuously
Stop pin missing alignment → Count lever not dropping → Deep slot not positioned correctly
Common Mistakes to Avoid
Setting the count wheel without the train in warning
This causes the stop pin and deep slot to be out of sync.
Ignoring lever bends
Even slight bends cause misalignment and inconsistent stopping.
Over‑adjusting the stop lever
Too much pressure causes bounce; too little causes slipping.
Forgetting to test all 12 hours
Some errors only appear at specific deep‑slot positions.
Handling the movement without protecting the pendulum assembly
The pendulum rod and spring bend easily and must remain perfectly aligned.
Checklist for Final Verification
• Count wheel aligned with deep slot at stop
• Stop pin meets stop lever cleanly
• Count lever drops fully into deep slot
• Strike count correct on all hours
• No hesitation or double‑striking
• Pendulum rod and spring undisturbed
FAQs
Why does my Ansonia 8-day clock over‑strike?
The stop pin and count wheel deep slot are out of alignment.
Why does the strike stop early?
The count lever may be dropping too soon or too deeply.
Why does the strike run continuously?
The count lever is not falling into the deep slot at the correct moment.
Do I need to adjust the snail?
No. The count wheel system does not use the snail for strike count.
Why protect the pendulum rod and spring?
They bend easily and must remain perfectly aligned for accurate timekeeping.
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