Davis Instruments Wheel a Weigh

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#1489

TRANSOM BRACKET KIT

For use with Launching Wheels for

Inflatables #1487 and #1488

ASSEMBLY INSTRUCTIONS

This hardware allows these wheels to be installed on

almost any boat with a hard transom of 12" (30 cm) high

or more.

EXTERIOR

of inflatable

Template provided

with kit

3/8" Drill

Holes

TRANSOM

INTERIOR

of inflatable

Transom

Bolt

Rubber

Gasket

Rubber

Gasket

fused to

Steel

Washer

Nut

1. Position the left and right struts on the transom,

wheels facing out and spread well apart to provide

lateral stability.

2. Mark the center of hole “TOP” for both struts or cen-

ter in the hole that may already be there. It is impor-

tant that the weight is carried by the strut brackets,

not by the knob assemblies.

3. Using the template printed on the next page of this

document, align hole “TOP” with the the left-hand

mark on the transom. Make certain that the strut as

outlined on the template is vertical. Mark the “LEFT”

hole. Repeat for the right-hand strut and mark the

“RIGHT” hole.

4. Drill through the transom at “RIGHT” and “LEFT”

using a 3/8" (9.5 mm) drill.

5. Assemble the transom hardware as shown in drawing

below. Bolt into place.

6. With everything positioned, check the alignment of

hole “TOP” and drill using a 3/8" (9.5 mm) drill.

3465 Diablo Avenue, Hayward, CA 94545, U.S.A.

Phone (510) 732-9229 • Fax (510) 732-9188

info@davisnet.com

For information about our other fine products, visit

www.davisnet.com

1489_Ins.pdf October 2005

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Summary

Wheel-a-Weigh Transom Bracket Kit Assembly Instructions

Step-by-Step Installation Guide

Detailed steps for positioning struts, marking transom holes using a template, drilling, and assembling hardware for the transom bracket kit.

The Davis Wheel-a-Weigh Transom Bracket Kit, model #1489, is an accessory designed to facilitate the installation of launching wheels (specifically models #1487 and #1488) on inflatable boats. This kit enables the user to equip their inflatable boat with a wheeled system, making it easier to transport the boat over land, such as from a vehicle to the water's edge, without having to lift or drag it. The primary function is to provide a secure and stable mounting point for the launching wheels on the boat's transom.

Function Description

The Wheel-a-Weigh Transom Bracket Kit allows for the attachment of launching wheels to the stern of an inflatable boat. This system is particularly useful for single-person launching and retrieval of boats, reducing physical strain and preventing damage to the boat's hull from dragging. The brackets are designed to be mounted on a hard transom, providing a robust connection for the wheels. Once installed, the launching wheels can be deployed to support the boat's weight during transport and then retracted or removed when the boat is in the water or being stored. The design emphasizes lateral stability, ensuring the boat remains upright and balanced during movement.

Important Technical Specifications

Compatibility: Designed for use with Davis Launching Wheels models #1487 and #1488.
Transom Requirement: Suitable for boats with a hard transom that is 12 inches (30 cm) high or more. This ensures sufficient surface area for secure mounting and proper wheel clearance.
Drill Bit Size: Installation requires drilling 3/8-inch (9.5 mm) holes for the transom bolts and the "TOP" hole.
Hardware Components: The kit includes essential hardware for mounting, such as transom bolts, nuts, rubber gaskets (both standard and fused to steel washers), and the bracket components themselves. The rubber gaskets are crucial for creating a watertight seal and protecting the transom material.
Template: A critical component of the installation process is the provided template. This template is shown at 2/3 size in the manual and requires enlargement by 150% on a copier to achieve the correct dimensions. It must be printed on legal-size copier paper (8 1/2 x 14 inches) to ensure accuracy. The template guides the user in marking the precise locations for drilling, ensuring correct strut alignment and vertical positioning.

Usage Features

Ease of Installation: The kit comes with detailed assembly instructions and a template to guide the user through the installation process. The step-by-step guide covers positioning, marking, drilling, and assembling the hardware.
Lateral Stability: The instructions emphasize spreading the left and right struts "well apart" to maximize lateral stability. This design consideration is vital for safe and stable transport of the boat.
Weight Distribution: The design ensures that the boat's weight is primarily carried by the strut brackets, rather than the knob assemblies of the launching wheels. This prevents undue stress on the knob mechanisms and enhances the durability of the system.
Adjustable Positioning: While the template provides fixed drilling points for the main bolts, the "TOP" hole can be marked at the center of an existing hole if present, or a new one, allowing for some flexibility in strut positioning relative to the transom's top edge. This ensures the strut is vertical, which is critical for proper function.
Watertight Seal: The inclusion of rubber gaskets is a key feature for maintaining the integrity of the boat's transom. These gaskets create a seal around the drilled holes, preventing water intrusion into the transom core.
DIY Friendly: The instructions are written to be accessible for users performing the installation themselves, requiring common tools and careful adherence to the provided template and steps.

Maintenance Features

Durable Materials: The components, including steel washers and nuts, are designed for marine environments, suggesting a degree of corrosion resistance. However, regular inspection for rust or wear is advisable, especially in saltwater conditions.
Gasket Integrity: The rubber gaskets play a crucial role in preventing water damage. Users should periodically inspect these gaskets for signs of cracking, hardening, or deterioration. Damaged gaskets should be replaced to maintain the watertight seal.
Bolt Tightness: Over time, vibrations and use can cause bolts to loosen. It is recommended to periodically check the tightness of all transom bolts and nuts to ensure the brackets remain securely attached to the transom.
Alignment Check: After initial installation and periodic use, it's good practice to check the alignment of the struts and the "TOP" hole. Any misalignment could indicate loosening hardware or stress on the system, which should be addressed promptly.
Cleaning: Regular cleaning of the hardware, especially after use in saltwater, can help extend its lifespan and prevent corrosion. Rinsing with fresh water is generally recommended.

The Davis Wheel-a-Weigh Transom Bracket Kit is a practical and essential accessory for inflatable boat owners looking to enhance the portability and ease of handling their vessel. Its robust design, clear installation guidelines, and focus on stability and transom protection make it a valuable addition for convenient boat launching and retrieval.