Transom Adapter Bracket TWIN/QUAD

DISCLAIMER

This is a digital STL file. No physical product will be shipped.
All sales are final. Due to the nature of digital downloads, no refunds or exchanges are offered.
Files are for personal use only. Redistribution, resale, or sharing of the files or printed parts is prohibited.
This is an original Tremendous Marine RC design and is not affiliated with, endorsed by, or associated with Freeman Boatworks or any other manufacturer.

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FREEMAN TRANSOM ADAPTER BRACKET — TWIN / QUAD

Put the 3548 outboard system on an existing Freeman hull. No hull redesign, no reprint.

The Freeman Transom Adapter Bracket lets TMRC's 3548 outboard motor system install on existing Freeman hulls originally designed for flat transom motor mounts, bridging the original transom geometry to support single, twin, or quad outboard configurations.

Legacy Freeman hulls were never designed for the mounting geometry or torque loads of modern 3548 outboards. This adapter corrects outboard mounting alignment, provides proper transom spacing, distributes load across reinforced mounting surfaces, supports higher-torque quad setups, and eliminates the need to modify or reprint the hull.

Print it. Install it. Scale your build.

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Specifications

• Type: Transom adapter bracket
• Motor Compatibility: TMRC 3548 outboard motor assemblies
• Configurations: Single, twin, or quad
• Hull Compatibility: Freeman hulls originally designed for flat transom motor mounts
• Orientation: Print flat on the transom face
• Supports: Not required

Not designed for non-Freeman hulls or custom transoms unless modified by the user.

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What's Included

• Freeman Transom Adapter Bracket STL
• Print-ready geometry optimized for strength
• Designed for direct integration with existing Freeman hull files

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Recommended Print Settings

• Material: PETG, ASA, or ABS-CF (recommended)
• Walls: 4–6
• Infill: 30% (Gyroid or Cubic)
• Layer Height: 0.20 mm (required)
• Supports: Not required

This part was designed and tested specifically at 0.20 mm layer height and 30% infill for optimal strength, dimensional accuracy, and vibration resistance.

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Filament

Printed in SUNLU PETG. Get it here (affiliate link): https://store.sunlu.com?sca_ref=11554757.OetPZf1JlD&utm_source=sunluaffiliate&utm_medium=sunluaffiliate&utm_campaign=sunluaffiliate

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Assembly Notes

• Quad motor configurations increase stress — print settings and quality control are critical
• Minor sanding or fitment adjustment may be required depending on printer tolerances
• Always test at low power before full operation
• You are responsible for print quality, material choice, assembly, and final use; files are provided as-is, without warranties of any kind

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Digital Download Only

No hardware, motors, electronics, shafts, couplers, hull files, or drive components included.

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TMRC
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Built by enthusiasts, for enthusiasts.

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