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Gear Train Project

The document describes a gear train project involving 3 gear trains with ratios of 16:1, 20:1, and a reverted gear train. It details using a high-geared reverted gear train to produce 16 output revolutions per input revolution in order to pull 6 pounds of weight efficiently. Testing added sandpaper and weight to the front wheels to increase traction, allowing the robot to pull around 10 pounds. The results section lists improvements like a more compact gear train, better gripping wheels, and better chassis/gear train planning.

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63 views8 pages

Gear Train Project

The document describes a gear train project involving 3 gear trains with ratios of 16:1, 20:1, and a reverted gear train. It details using a high-geared reverted gear train to produce 16 output revolutions per input revolution in order to pull 6 pounds of weight efficiently. Testing added sandpaper and weight to the front wheels to increase traction, allowing the robot to pull around 10 pounds. The results section lists improvements like a more compact gear train, better gripping wheels, and better chassis/gear train planning.

Uploaded by

api-628245069
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Gear Train Project

By Blir, Emit, Dillan, Micah, Androo & Zephin


Gear Train #1: 16:1 Ratio
Gear Train #2: 20:1 Ratio
Gear Train #3: Reverted Gear Train
Our Plan
In order to reach the threshold of six pounds pulled in a compact and efficient way, we decided to use a
high-geared reverted gear train that produces 16 output revolutions per one inputted revolution.
How it’s made
Our gear train used high gear ratios and low gear speeds to create a robot that would haul the most possible
weight, but at least six lbs.
Testing
The first test resulted in the wheels turning in place. After that, we
added sandpaper to the wheels, and moved the weight to the front,
on top of the driving wheels in order to maximize the traction of the
wheels, as the vector of kinetic friction between the ground and the
wheels equals the mass of the wheels times the force of gravity
times the coefficient of friction between the ground and wheels.
Using this equation, we determined that adding mass to the robot
would increase the normal force on the wheels and therefore
increase friction, adding more traction. Making these additions
resulted in our highest value of weight pulled at ~10 lbs (Our best
picture is featured below).
Results

What we would do differently:

● Make a more compact gear train, as we ran into difficulties with making changes to the gears.
● Use wheels with better grip, as pulling weight proved to be challenging with the wheels we had
chosen.
● Plan out chassis and gear train for better design, since we had difficulties finding space to add/adjust
parts on the chassis.

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