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How Does a Peerless Differential Work?

How Does a Peerless Differential Work?

Posted by BMI Karts
The Peerless Differential is a small mechanical differential commonly used in go-karts, lawn equipment, and small utility vehicles. Its job is the same as a car differential: allow the two drive wheels to rotate at different speeds while still being powered by the same axle. This is important when turning.
How To Measure Wheel Bolt Patterns

How To Measure Wheel Bolt Patterns

Posted by BMI Karts
Understanding 3-lug and 4-lug wheel bolt patterns is essential when selecting hubs, wheels, or racing components for your kart. A bolt pattern refers to the diameter of the circle formed by the centers of the mounting holes.
Gear Ratio Calculator for Jackshaft Setup

Gear Ratio Calculator for Jackshaft Setup

Posted by BMI Karts
A jackshaft setup on a go-kart uses an secondary shaft mounted between the engine and the rear axle to transfer power through two separate chain drives. This allows you to change gear ratios more easily, improve torque and acceleration.
Go-Kart Top Speed Calculator (MPH)

Go-Kart Top Speed Calculator (MPH)

Posted by BMI Karts
This easy-to-use tool helps you calculate gear ratios and estimate top speed based of your go-kart.
Go Kart Sprocket Diameter Calculator

Go Kart Sprocket Diameter Calculator

Posted by BMI Karts
Plug in key information to find the diameter of the sprocket is measured along the circle through the centerline of the chain rollers.
Redesigned Idler Hub for 8

Redesigned Idler Hub for 8" Wheels

Posted by BMI Karts
The redesigned Aluminum Idler Hub now fits cleaner and more precisely into the center bore of nearly all 8” wheels, improving alignment and reducing play. Featuring both a 4 on 4” bolt pattern with 1/2” holes and a 4 on 110mm metric pattern, this updated hub offers greater compatibility, easier installation, and a great fit for go-karts and custom builds.
Comet 780 / 500 Series - Engagement Speeds

Comet 780 / 500 Series - Engagement Speeds

Posted by BMI Karts
Estimated Engagement Chart for Comet 780 / 500 Series
SMC Vortex Clutch - Spring Chart

SMC Vortex Clutch - Spring Chart

Posted by BMI Karts
SMC Vortex Clutch (6 Spring) - Estimated Engagement Chart.
The engagement speed is set by spring stiffness (Silver, Black, Gold) and the position (1 thru 5) of the lower spring leg.
Brake Band Installation & Setup Guide

Brake Band Installation & Setup Guide

Posted by BMI Karts
How do you set up a brake band? This guide explains the key steps for attaching the band, connecting the brake rod, and making adjustments for this type of setup.
Need a Bracket to Mount MCP Brake Caliper for a 1

Need a Bracket to Mount MCP Brake Caliper for a 1" Axle

Posted by BMI Karts
BMI Karts made an easier, bolt-on bracket to install an MCP brake caliper to a 1" live axle setup. 
Predator 224cc Hemi Engine Analysis

Predator 224cc Hemi Engine Analysis

Posted by BMI Karts
This engine is best suited for governed cruising or trail riding, but due to its poor piston design and lack of replacement options, we do not see a viable performance market for it at this time. Therefore, we will not be carrying a billet rod or side cover for this engine.
212cc Ghost Predator Engine: Performance Overview & Upgrade Guide

212cc Ghost Predator Engine: Performance Overview & Upgrade Guide

Posted by BMI Karts
As most of you know the Ghost is a Ducar style 212cc engine with a Chinese copy of a Briggs Animal slide carb, a slightly different cam profile, factory top plate and most importantly a 6000 RPM Rev limiting coil.
How to Properly Mount a Racing Seat

How to Properly Mount a Racing Seat

Posted by BMI Karts
This video is a great guide for mounting a racing go kart seat. Pay particular attention to installing your seat struts without pulling or putting tension on the seat.
Meet Don Daily - The Man Who Turned a Little Red Wagon Into a Racing Machine

Meet Don Daily - The Man Who Turned a Little Red Wagon Into a Racing Machine

Posted by BMI Karts
Using BMI parts, Grandpa Daily surprised his son and grandchildren by transforming a simple little red wagon into a racing machine! See the parts he used, the process he went through, and the end results.  
What Is Pozidriv?

What Is Pozidriv?

Posted by BMI Karts
Pozidriv, commonly spelled incorrectly as "Pozidrive", is an improved variation on the Phillips drive design. After the patent for the Phillips head expired, the company GKN Screws and Fasteners created the Pozidriv design.
Bully Clutch: 1

Bully Clutch: 1" Jackshaft Turbo 4 Disc Set Up Info (098-469)

Posted by BMI Karts
Bully Clutch: 3/4

Bully Clutch: 3/4" Jackshaft Turbo 6 Disc Set Up Info (098-468B)

Posted by BMI Karts
Installation and adjustment information for Bully Turbo Jackshaft Clutch, 10,200 RPM, 4-Disc / 6-Spring (3/4" Bore).
Bully Clutch: 2 Disc 6 Spring Setup Info

Bully Clutch: 2 Disc 6 Spring Setup Info

Posted by BMI Karts
Installation and adjustment information for Bully 2-Disc 6-Spring 3/4" bore clutch.
Basic Racing Go Kart Layout

Basic Racing Go Kart Layout

Posted by BMI Karts
Diagram of the basic terminology, parts or sections on a racing go kart chassis.
Camber Go Kart Mechanics

Camber Go Kart Mechanics

Posted by BMI Karts
Camber is the angle between the vertical reference (perpendicular to the road surface) and the line that runs through the center of the tire/ wheel.
Toe In / Out  (Go Kart Steering)

Toe In / Out (Go Kart Steering)

Posted by BMI Karts
Go kart steering toe-in and toe-out basic mechanics.
Hydraulic Disc Brake Mechanics

Hydraulic Disc Brake Mechanics

Posted by BMI Karts
Basic Mechanics to Hydraulic Disc Brake Setups.
Four-Stroke Engine Basics

Four-Stroke Engine Basics

Posted by BMI Karts
A 4 stroke internal combustion engine has to do 4 things to complete one cycle.
Electronic Fuel Injection Vs. Carburetor Go Karts

Electronic Fuel Injection Vs. Carburetor Go Karts

Posted by BMI Karts
EFI is an option that, while adding to the initial expense, can save money over the long run and provide several operational advantages that will appeal to many Go-Kart owners.
Honda GX390 / Predator 420cc Top Plate ADJ-3146 Installation

Honda GX390 / Predator 420cc Top Plate ADJ-3146 Installation

Posted by BMI Karts
Honda GX390 / Predator 420cc Top Plate ADJ-3146 Installation
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