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ShotPuck SP1 rev B

Above: SP1 rev-b with texture black enamel finish

specs:

Total weight: 340.2 g, (12 oz)  (.75 lbs)
Net #9 lead shot weight: 270 grams
Printed material: ABS resin, caps and body
Spindle bushing : lathe-turned Delrin
Total height: 46.7mm (1.839 inches)
Outside diameter: 74.7mm

 

Status: Available for sale

Price: $47.50

Shipping: $15.50 USPS Priority Mail flat rate box to Conus (1st Class International everywhere else)

Paypal, Money order, cash (if local pickup)

Please direct inquiries to: webmaster@theanalogdept.com

 

Product Notes:

This model is derived from the ShotPuck SP1 rev-A in that it retains the overall shape with five cylindrical shot chambers arranged in a five point star configuration.  It differs from SP1 rev-A  as follows:

  1. There is extended body geometry in the form of a "hat".

  2. Otherwise the ABS body, chamber and chamber cap geometry is the same as SP1-rev-A.

  3. Like the SP1 rev-A, this model implements a post-print procedure which results in a much smoother external finish.  The process is sometimes called Acetone Vapor finish.  The acetone vapor process increases the total manufacturing time requirement by an additional 10 hours.  The visual impression, I think, makes the added time worth while, and also can eliminate the need for paint   At this time the standard finish for this model is texture black enamel.  Natural finish pucks (no paint) will be made available separately, soon.

DSC_3537.jpg (187911 bytes) DSC_3538.jpg (170724 bytes)

The cad model dimensions in millimeters

rev b sketch_1.jpg (201238 bytes) rev b sketch_2.jpg (181882 bytes)

All CAD models for the ShotPuck product line are drawn in-house at The Analog Dept. by yours truly, webmaster. (aka user510)

What is the purpose of this record puck? (also known as a record weight)

Q: We might just as well ask the question; what is the point of any record weight?*

A: to dampen vibrations running through the record as it is being played.

Q: why lead shot chambers?

A: Very much like a sand box, the individual lead shot vibrate against one another when stimulated by an external source of vibration.  This implies that the individual shot act as a conduit through which vibrations travel.  However, because the individual shot are in intimate contact with a large mass of shot, there is not enough energy coming from the source stimulant to force the vibrations to pass completely through the chamber.  Ergo vibrations go in, they are dissipated and die within the shot chamber.  When this theory is executed properly within a record puck, the end effect is that the reduction in record vibrations result in a cleaner sounding playback.  This should also result in a measurable improvement in the s/n ratio.

*(Record weights are often nick-named a 'puck'. because the size and shape often resembles a hockey puck)