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Home > Frequently Asked Questions > Utilizing a Stopper Pin with 18-note Sankyo Gold Music Movements with Stopper Wire

Utilizing a Stopper Pin with 18-note Sankyo Gold Music Movements with Stopper Wire

Utilizing a Stopper Pin with 18-note Sankyo Gold Music Movements with Stopper Wire

Utilizing a Stopper Pin with 18-note Sankyo Gold Music Movements with Stopper Wire is rated 1.0 out of 5 by 1.
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The following is an example of how the stopper pin (#30097) can be utilized so that the lid opening and closing can turn on/off the music movement. Please note that the music box frame shown is a general example. Also note that a mounting diagram and recommended mount board thickness will be illustrated on the following page. Please read through all information, and determine how best to accommodate the music movement and stopper pin to your music box, before completing any machining for the music movement and stopper pin.

Typically, the stopper pin will be utilized on the front or side portion of any music box assembly. Since the rear portion will typically accommodate the hinge, the music movement and stopper pin hole should be located towards the front portion of the case. The music movement should be positioned so that the end of the base, on the side where the stopper wire protrudes, is located no more than 2” from the stopper pin slot. Remember that the stopper wire can always be trimmed to reduce the stopper wire length (however it should be trimmed in small increments until it reaches the required length). The 1/8” wide stopper pin slot length will depend on the case assembly itself. Typically, the slot length will be a minimum of 3/8” long. The 7/64” diameter stopper pin hole should be at a depth of about 1-1/8” – 1-1/4”.

Mount the movement (see illustration 2). Position the stopper pin into the Ø7/64” hole with the stopper wire hole at the bottom. Insert the stopper wire through the 1/8” wide slot and through the small hole in the stopper pin (see illustration 1). Allow excess wire to extend through the pin (as the wire will tend to follow a slight arc when moving up and down).

Stopper Pin Example

You may use the dimensions provided below to locate required mounting holes for Sankyo 18-note Gold music movements with pre-attached stopper wire. Note that ¼” maximum thickness has been recommended for the music movement mount board. We recommend ¼” thick plywood veneer (which will typically have a nominal thickness of 7/32”). This will ensure that the key-wind shaft will be able to extend through the mount board with a bit of excess shaft for clearance.

Stopper Pin Example

The stopper wire can be bent accordingly to allow for engagement of the stopper pin so that the pin is able to extend up out of the case frame when the lid would be open. This is a trial and error process that may require repeated adjustments to achieve. After initial adjustments, test the stopper pin and wire assembly by opening and closing the music box lid. If the movement continues to play with the lid closed, check to make certain the stopper wire is engaged through the stopper pin. It may also be necessary to make bend adjustments to the end of the stopper wire which engages the flywheel of the music movement when the stopper pin would be down (simulating a closed lid). If the pin should not pop up when the lid is opened, make certain the wire does not extend too far through the pin (and rub against the inside depth of the slot). Continue to adjust as need be until lid action will activate/deactivate the music movement repeatedly with ease.


 
Rated 1 out of 5 by from stopper pin Bought these by mistake. BUT is really strange that you offer a pin but not the wire stopper the pin requires to be used. Now I have to order a stopper wire from another company at an added expense and a second cost of shipping. I will most likely look for a site that offers all the parts for a music box
Date published: 2016-02-02
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can you use a stopper pin on the white covered mechanism? if so, can i order stopper pins separately?

Asked by: redm
Hi redm, a stopper pin cannot be used on our white covered music movements.
Answered by: Klockit
Date published: 2016-09-15

Does it comes with the wire stopper?

Asked by: Papo46
Yes, out 18-note Sankyo music movements come with a wire stopper.
Answered by: Klockit
Date published: 2016-06-07
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