Singer Model 15-86 Sewing Machine Parts

Singer Model 15-86 - The Classic Workhorse in Treadle & Electric

Find vintage genuine and quality aftermarket replacement parts for the Singer Model 15-86, part of the legendary Class 15 series that began in 1895. Introduced in the 1930s, this versatile machine was available in both treadle-powered and electric versions, representing the pinnacle of mechanical sewing machine design with its heavy cast iron construction and industry-standard oscillating shuttle system.

History of the Singer Model 15-86

Introduced around the 1930s as part of the long-running Class 15 series, which evolved from Singer's Improved Family machine (1879). The Class 15 series became one of Singer's most successful and longest-produced designs, with the 15-86 available in both treadle and electric versions to suit different needs.

• Design Lineage: Evolved from Improved Family machine (1879) into Class 15 (1895)
• Production Era: 1930s-1950s
• Manufacturing: Often produced at Singer's Kilbowie plant in Scotland, especially RAF decal models
• Power Options: Treadle-powered (foot pedal and flywheel) or electric motor versions

Why the Model 15-86 is Legendary

• Mechanical Simplicity - Easy to understand, maintain, and repair
• Incredible Durability - Heavy cast iron construction built to last generations
• Versatile Power Options - Available as treadle (no electricity needed) or electric motor
• Industry Standard Design - Vertical oscillating shuttle became the industry standard
• Beautiful Cabinets - Often mounted in ornate treadle cabinets or portable cases (electric versions)
• RAF Decal Variants - Highly collectible models with distinctive decorative decals

The Famous RAF Decals

Important Note: "RAF" refers to the decal style, not the Royal Air Force. These distinctive decals were created by William Hopper of Dumbarton, Scotland, who worked at the Kilbowie Singer plant.

• Design Features: Stylized birds and lightning bolts in elegant patterns
• Era: Common on 15K models during the 1930s and 1940s, especially in UK and Canada
• Collector Appeal: Machines with RAF decals are highly sought after for their unique aesthetic and historical value
• Visual Charm: Add a layer of artistry to an already beautiful machine

Key Features

• Stitch Type: Straight stitch only - perfect, reliable stitches
• Bobbin System: Class 15 - Vertical oscillating shuttle with removable bobbin case (industry standard design)
• Needle Type: 15x1 (also known as 2020 or 130/705H) - still widely used today
• Tension Assembly: Located on faceplate above presser bar (unique positioning)
• Construction: Heavy cast iron body for maximum stability and durability
• Power Options: Treadle (foot-powered) or electric motor versions
• Mounting: Treadle cabinets with decorative ironwork or portable cases for electric versions

Why Sewers Still Love the 15-86

• Perfect Straight Stitch - Consistent, beautiful stitches that modern machines struggle to match
• Treadle Option - Ideal for off-grid living, power outages, or historical demonstrations
• Electric Convenience - Motor-powered versions offer modern convenience with vintage quality
• Easy Maintenance - Simple mechanics mean straightforward repairs and adjustments
• Built to Last Forever - Cast iron construction ensures these machines outlive their owners
• Handles Heavy Fabrics - Powerful performance on thick materials whether treadle or electric

Available Replacement Parts & Accessories

• Bobbins & Bobbin Cases - Oscillating shuttle bobbins and removable bobbin cases
• Shuttles - Complete oscillating shuttle assemblies and replacement parts
• Presser Feet - Low shank presser feet for various sewing techniques
• Needles - Standard 15x1 needles (2020, 130/705H) in all sizes
• Treadle Parts - Leather belts, treadle hardware, pitman rods, and drive components
• Electric Motor Parts - Replacement motors, motor belts, and foot controllers
• Tension Components - Tension assemblies and springs for faceplate-mounted system
• Mechanical Parts - Feed dogs, presser bars, and internal components
• Restoration Parts - Decals (including RAF style), faceplates, and cosmetic components
• Cabinet Hardware - Hinges, latches, and cabinet accessories for both treadle and electric versions

Maintenance & Care

The 15-86's simple mechanical design makes maintenance straightforward whether treadle or electric. Regular cleaning and oiling of the oscillating shuttle and moving parts will keep it running smoothly. Treadle versions need leather belt maintenance, while electric versions may need motor belts or motor brush replacement. The cast iron body is virtually indestructible but benefits from occasional cleaning and light oiling to prevent rust.

The vertical oscillating shuttle system is easy to access and maintain. The removable bobbin case should be cleaned regularly and checked for burrs or damage. The tension assembly on the faceplate is simple to adjust and maintain.

Restoration & Collecting

The Singer 15-86 is a popular restoration project due to parts availability and mechanical simplicity. RAF decal models are especially prized by collectors for their distinctive beauty and historical significance. Treadle versions often feature beautiful woodwork and decorative cast iron bases, while electric versions may come in portable cases or simpler cabinets.

Serial numbers can help date your machine and identify its manufacturing location. Kilbowie, Scotland machines often feature RAF decals and are particularly collectible.

Need help finding the right part for your Model 15-86? Our team has over 20 years of experience with vintage Singer machines. Whether you have a treadle or electric version, and whether you need oscillating shuttle bobbins, motor parts, treadle belts, restoration decals, or help dating your machine by serial number, we can help you find exactly what you need. These machines were built to last forever, and we're here to help you keep yours running for generations to come.