Gone fishin

List of group members

Norman P. Frese
Vincent T. Guilliams
Michael D. Henson
Patrick B. Cox
Ethan Livingston


This project is to design a mechanism that will allow a person in a wheel chair with limited mobility and strength in the arm and hand to fish. The idea or goal is to translate the physical results of fishing motions via a machine to allow someone incapable of those motions to enjoy the sport of fishing.


A wheelchair bound 11yr old girl is wanting to fish with her family and due to a muscular degenerative condition lacks the arm mobility and strength to grip and cast a fishing rod. The idea is to rig a platform where with her limited mobility and strength in both arm and grip she can cast a line and reel in a catch. The design needs to be able to work with her powered out door wheelchair, without risking or compromising the wheel chairs function and her or her family's well being. The interface should be simple and physically easy to use requiring very little strength to operate.

Design Specifications

User is a 11yr old girl with a degenerative muscular condition with extremely limited mobility and strength in arms, hands and fingers. Customer is able to utilize a video game controller.

Design must be able to:

Fit safely onto and function with a motorized wheel chair.
Cast a fishing line with the press of a button
Reel in the fishing line with the press of a button
Allow customer to be able to aim/direct the line to desired fishing location with the use of a simple joystick controller
Be safe to use and operate for the customer and anyone accompanying them
Be simple to maintain and cost efficient to use.
It must be capable of performing for extended periods of time up to several hours in a single day of use.
It should be fun for the customer to operate
It should be easy for the customer and anyone accompanying them to understand and maintain.
Low/effecient cost.

Design Concepts

Design Concept 1

The concept behind design one is a delivery system using a crossbow like mechanism to Launch a weighted fishing hook out into the water. The Crossbow would rest and attach via pin/revolute joint at the rear pistol grip to a horizontal rotating base and rest forward near the arms on an elevating piston. The Base would rotate 30 degrees off center left and right, the piston would elevate the nose of the crossbow up to a maximum of 45 degrees to allow for maximum range of casting. Attached to the crossbow would be the fishing spool and a motor to reel the line in. The base, piston, remote trigger, and reel motor would all be controlled remotely by a video game controller for ease of use by the customer. The base itself would attach to a table that would latch to the customers wheel chair with a cut out allowing for chair mobility as well as fishing.


Design Concept 2

The concept behind design two is a two part approach. The Delivery/casting of the fishing line is going to be done with a paintball gun modified to launch the hook, line and sinker with a similar setup to the crossbow as far as attachment and control. The difference is design two uses a separate location for the fishing reel and guide pole rather than attaching it to the gun. It utilizes the same table design as the crossbow placing the paintball gun and fishing reel on a table that latches to the two arms of the chair. The fishing reel is an "automated" fishing reel design that already exists and would simply need modification to mount and attachments to aid in the casting process. Additionally both design one and this one would have a bipod that would extend from the front of the table to the ground in the event a large fish was caught to prevent any over balance of the chair.


Design Concept 3

Design 3 is a concept that envisions a more compact all in one design. The modified paintball gun is utilized as the launching platform as in design two, but the difference is the fishing spool is attached to the gun as is the motor for reeling it in. It utilizes the same mobile platform as the previous two designs with one significant addition. The whole system is mounted to the left side of the entire chair on the arm. This design incorporates elements of both previous designs into a single unit and utilizes a bi or tri pod for increased stability to the side of the chair to prevent tipping. A full table could still be utilized for customer's convenience as fishing is a time consuming sport, allowing for snacks and drinks to be at hand while fishing is done off to the side.


Component concepts designs

Various parts of this design are motorized and this area is a record of our thought processes on how to accomplish some of the individual tasks such as the auto trigger mechanism, elevation control spool setup etc.


Concept Evaluation

Category Design1 Design2 Design3
Safety 2 1 4
Cost 1 3 3
Ease of use 2 3 5
Fun 5 5 5
Simplicity 4 4 3
Weight 2 4 4
Longevity 3 4 4
Maintenance 2 5 5
Function 4 5 5
Total 25 34 38

We rated each concept on a scale of 1-5, 5 being best. We rated safety, cost, ease of use, fun for customer, simplicity of design, weight, longevity, maintenance, and capability of performing the function required. Design 3 scored highest.

Design 1 safety: Bolt to shoot less safe, placement, weight of design
Design 2 safety: Placement,
Design 3 safety: whip incase of line breakage

Design 1 cost: Crossbows expense
Design 2 cost: autoreel's expense
Design 3 cost: Motorized expense

Design 1 ease of use: Would need assistance in load and cocking of delivery system
Design 2 ease of use: Would need assistance in load of delivery system
Design 3 ease of use: near complete autonomy for customer

Design 1, 2, 3, fun factor: All three score high for fun, what 11yr old wouldn't want to shoot crossbows and paintball guns to fish.

Design 1 simplification: simplistic setup plenty of space for mounting all necessary parts
Design 2 simplification: plenty of space for mounting all necessary parts
Design 3 simplification: more complex due to condensing and offsetting the system to the side

Design 1 Weight: Heaviest
Design 2, 3 weight: Same and significantly less than design 1

Design 1 longevity: String and arm of crossbow has shorter lifespan and may not properly function in adverse weather
Design 2, 3 longevity: same and expected to last significantly longer than design 1

Design 1 maintenance: Particular care must be taken of crossbow string and arm, as well as cocking mechanism
Design 2, 3 maintenance: Designed to be near maintenance free aside from baiting, line replacement and air canister replacement

Design 1 function: Delivers the function of allowing customer to cast and engage in the sport of fishing, complications bolt, loading, and adverse weather may hinder function
Design 2 function: Delivers function of allowing customer to engage in fishing.
Design 3 function: Delivers function of allowing customer to engage in fishing.

Design Overview

Give a brief description and schematics of the final design. Divide into as many subheadings as needed for organization.


Describe the three types of analysis performed on the design. Use equations and schematics as needed.

Engineering analysis 1

Engineering analysis 2

Engineering analysis 3

Bill of Materials

Part Drawings


Windage driving motor


Solenoid trigger driving motor


Base drawing with platform attached


Weapon and mount drawing


platform channel arc and location drawing.

Assembly Instructions

Include as many descriptive pictures as possible.

Implemented Design

Include pictures of the final product.

Summary and Conclusions