Catching up with Chris Promethean Liver #466
The Fast Life Podcast
Catching up with Chris Promethean Liver #466 The Fast Life Podcast · Jun 12, 2026
Catching up with Chris Promethean Liver #466

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Catching up with Chris Promethean Liver #466
Term

wiring schematic

A wiring schematic is a diagram that shows how the bike’s electrical parts connect to each other. It helps you wire everything correctly instead of guessing.

Term

wiring harness

A wiring harness is the bike’s main bundle of wires and plugs. If it’s old or damaged, replacing it can make the electrical system work correctly again.

Term

speedometer

The speedometer tells you how fast you’re going. When people rewire or upgrade a bike, they often need to make sure the speedometer is wired correctly too.

Term

exhaust systems

The exhaust system is the parts that move hot gases out of the engine and out the back of the bike. Better flow through the exhaust can help the engine run more smoothly.

Term

M unit

An “M unit” is an aftermarket motorcycle electrical control module (from Moto gadget in this case) that manages core functions like power distribution and signaling. Because it expects wiring to be done in a specific way, it can force different grounding and signal routing than a typical stock harness.

Brand

Moto gadget

Moto gadget makes aftermarket electrical parts for custom motorcycles. The “M unit” they mention is a controller that changes how the bike’s wiring works, so it can feel different from stock setups.

Term

ground

In wiring, “ground” is the electrical path that completes the circuit. If the turn signal needs to “go to ground,” it means the signal won’t work correctly unless the wiring is connected to the right return point.

Term

turn signal

A turn signal is the light that tells other drivers which direction you’re turning. When you change the bike’s electronics, the turn signal wiring can work differently than it did from the factory.

Term

horn

The horn is the motorcycle’s sound signal. In some custom builds, people remove it temporarily so they can reach the electronics they need to troubleshoot or reset.

Term

hard reset

A “hard reset” means forcing an electronic module to restart from scratch. It’s used when the system is acting wrong and you need it to reboot so it can start behaving normally again.

Term

choppers

Choppers are a style of custom motorcycle. They’re known for a unique, stretched look, and the host is saying they use quality parts on that kind of bike.

Brand

Arlen Ness.com

Arlen Ness is a famous motorcycle customizer and brand. The host is telling you to check their website for what they’re releasing for 2026.

Brand

Kabuto motorcycle helmets

Kabuto makes motorcycle helmets. The host is saying their helmets are designed to cut through wind and protect you, especially at high speeds.

Term

wake stabilizer

A wake stabilizer is a shape on the helmet that helps control the air flowing around it. That can make the helmet feel steadier and quieter when you’re going fast.

Term

crest spoiler

A crest spoiler is a small aerodynamic feature on the helmet. It helps the air flow more smoothly so the helmet doesn’t get pushed around by wind at speed.

Term

triple digit speeds

“Triple digit speeds” means over 100 miles per hour. At that speed, helmet design has to handle strong wind so it stays stable and comfortable.

Term

ACT tech

ACT tech is a helmet construction technology associated with Kabuto’s protective design. While the segment doesn’t spell out the acronym, it’s presented as part of the helmet’s lightweight composite shell approach for safety and comfort.

Term

MIP safety standards

MIP safety standards are the helmet’s safety requirements it’s designed to meet. The host is basically saying it’s built to pass recognized protection testing.

F 17
Car

F 17

“F 17” is the exact helmet model the host wears. They describe it as a full-face helmet made for MotoGP-style riding, with good ventilation for hot weather.

Brand

Harley-Davidson

Harley-Davidson is a well-known motorcycle brand. Here, the speaker is saying the bike isn’t a typical Harley—it’s more of a custom “chopper” style.

Concept

chopper method

The “chopper method” is basically a DIY custom-building approach. Instead of doing what the factory says, you experiment and make changes yourself to get the look and feel you want.

Term

fuel injected

Fuel injection is a system that sprays fuel into the engine using electronics. It’s different from a carburetor, which mixes fuel and air more mechanically.

Term

carburetors

A carburetor is a mechanical device that mixes air and fuel before it enters the engine. Enthusiasts often prefer carburetors for their simplicity, tuning feel, and classic look, even though modern fuel injection can be more precise.

Term

throttle body

A throttle body controls how much air can get into the engine. With fuel injection, it’s usually part of a more complex system than a carburetor.

Term

fuel injector

A fuel injector is the part that sprays fuel into the engine. It’s the hardware you’d expect to see with fuel injection, instead of a carburetor.

Term

magneto

A magneto is a device that makes the spark that lights the fuel in an engine. It works without needing the battery, so it’s common on older bikes and some custom builds.

Term

throwing a code

“Throwing a code” means the bike’s computer noticed something wrong. It logs an error so the motorcycle may not behave normally until the issue is fixed.

Term

wires

The bike uses wires to send signals between its sensors and computer. If a wire connection is slightly off or damaged, the bike can misread the signals and act like there’s a problem.

Term

eye bolts

Eye bolts are bolts with a loop on the end. Here they’re being used as solid mounting/connection points for wiring and electrical grounding.

Term

fueling

Fueling is basically how the engine gets its gas. If the fueling is off, the engine can run poorly, so it’s a key part of why carburetors get discussed.

Term

choke a carburetor

Choking a carburetor is a starting trick for cold engines. It changes the fuel/air mix so the engine can start, but you have to use it properly so you don’t flood the engine.

Term

EFI system

EFI means the bike uses electronics to control fuel delivery. If it stops working, you usually can’t fix it by simple carb adjustments—you often need to diagnose what the computer is seeing.

Term

scan tool

A scan tool is like a code reader for the bike’s computer. It can tell you what’s wrong by pulling error codes and sometimes showing sensor readings.

Ducati
Car

Ducati

Ducati is a famous Italian motorcycle maker. Here, the speaker is working on a Ducati bike and talking about how its fuel system works and how reliable it is for daily riding.

Term

fuel injection

Fuel injection is how a motorcycle delivers fuel to the engine using sensors and a computer. It’s different from a carburetor, and the speaker is saying they’re keeping it because it tends to work well for daily use.

Concept

daily bike

A “daily bike” is the motorcycle you ride regularly, like commuting or errands. The speaker is choosing the setup that’s most likely to start and run consistently every day.

Term

jetting

Jetting is how you tune a carburetor so it squirts the right amount of fuel. Different jets control fuel at different throttle positions, so the “right” jetting helps the bike start cleanly and run smoothly.

Term

pilot jet

The pilot jet controls fuel when you’re idling or just barely opening the throttle. If it’s too big, the bike can get too much fuel (flood) and won’t start or run cleanly until you adjust it.

Term

intermediate jet

The intermediate jet is part of the carburetor that controls fuel when you’re not fully off-throttle and not wide open—somewhere in the middle. If it’s not the right size, the bike can hesitate or run weird as you start to accelerate.

Term

main jet

The main jet is the carburetor part that controls fuel when you’re giving it more throttle. If it’s not sized right, the bike can feel wrong when you accelerate harder.

Term

flooding

Flooding is when the engine gets “too much fuel” and can’t burn it properly. With a carbureted bike, it often happens if you give too much throttle while starting.

Term

SNS carbs

SNS carbs are a specific type/brand of carburetor. The host is saying that with these carbs, it’s common to feel a stumble or cough when you open the throttle just a little.

Term

quarter turn throttle

Quarter turn throttle means you’re only opening the throttle a little—like a small twist. Some carb setups stumble right around that amount of throttle, so it’s a useful clue for diagnosing jetting/transition issues.

Term

altitude

Altitude changes how much oxygen is in the air. Higher up, the air is thinner, so the bike may need different fuel settings to run correctly.

Term

stock

In this context, “stock” means the manufacturer’s original configuration, including the original jetting/fueling parts. Comparing stock vs modified jetting is a common way riders diagnose whether changes (like smaller jets) are causing a lean or rich condition and affecting fuel consumption.

Term

throttle position

Throttle position just means how much you’re pressing the gas pedal. More throttle usually means more air entering the engine, and that changes how much fuel the bike needs to run right.

Concept

higher speeds

Higher speeds can make problems show up that you don’t notice at slower speeds. That’s why people test on the highway after tuning the bike.

Term

vibratey up in the handlebars

If the handlebars start vibrating at a certain speed, it usually means something in the bike’s running condition isn’t happy at that moment. It can be related to how the engine is fueling or how the bike is being pushed.

Car

Harley Davidson hardtail chopper

A Harley-Davidson hardtail chopper is a custom-style motorcycle with no rear suspension. That makes it feel firmer and more “rigid” than bikes with rear shocks.

Term

super steep rake angle

On a motorcycle, the “rake angle” is how the front steering is tilted. If it’s set very steep, the front end can feel stiff and not soak up bumps as easily.

Term

forks to compress

The forks are the front suspension. “Compress” just means they move when you hit a bump—if they don’t move much, the bike feels stiff.

Term

five weight fork oil

Fork oil is the fluid inside the front suspension. The “weight” (like five weight) affects how easily the forks move and how smooth or stiff they feel.

Term

mild steel

Mild steel is a pretty common type of steel. It’s not as strong as some specialty steels, so you often need thicker pieces to make the structure strong.

Term

chromoly

Chromoly is a stronger kind of steel than mild steel. Builders like it because it can let you use thinner metal while still staying strong, but it can be more expensive and harder to work with.

Term

stress relief

Stress relief is a heat-treatment process used to reduce internal stresses in metal after forming or welding. By heating to a controlled temperature for a set time and then cooling in a controlled way, the material’s properties become more stable and predictable—important for high-performance structural applications like aircraft-grade builds.

Brand

Royal Enfield

Royal Enfield is a motorcycle company. The hosts are talking about where the company is based and how it places itself near other motorcycle-focused people.

Place

Milwaukee

Milwaukee is a city in the U.S. that the hosts use as an example of where Royal Enfield of North America is based. The discussion is less about the city itself and more about how motorcycle brands locate near communities of riders and builders.

Brand

Triumph

Triumph is another well-known motorcycle brand. The point being made is that Royal Enfield chose to locate near Triumph, likely because that area already has lots of motorcycle culture.

Jeep Wrangler
Car

Jeep Wrangler

A “Wrangler” is a Jeep model known for off-road capability. Here, “cult Wrangler” means a Jeep that’s been heavily customized by a builder so it looks and feels like a one-of-a-kind project.

Term

cafe racers

Cafe racers are a style of motorcycle that usually looks stripped down and sporty. People build them to have a classic, minimal look and a more focused riding feel.

Term

Chevy 350 motor

“Chevy 350” is a well-known V8 engine from Chevrolet. People often use it for swaps because it’s common, supported with parts, and relatively straightforward to build.

Term

trans axle

A transaxle is basically the gearbox and the rear axle/differential combined into one unit. Race cars often use this to fit the drivetrain better and help the car handle.

Person

Colin Chapman

Colin Chapman was the key person behind Lotus. He’s remembered for designing race cars that handled really well, and the host is saying this builder studied his ideas.

Brand

live wire

LiveWire is Harley’s electric motorcycle brand. The discussion is about who might be buying a dirt-bike company to expand into electric bikes.

Brand

Dust Moto

Dust Moto is a dirt-bike brand. In this episode, they’re described as making an electric dirt bike meant to feel like a 250-class bike.

Person

Colin Godby

Colin Godby is the person who started Dust Moto. The host also says he worked on another electric bike company before this.

Brand

upco

Upco is another electric bike company mentioned as Colin Godby’s previous workplace. It’s included to give background on his experience.

Brand

Stark

Stark is another electric dirt-bike brand mentioned as a comparison point. The host is describing where Dust Moto fits in the lineup.

Brand

Surran

Surran is another electric dirt-bike brand mentioned for comparison. The host is saying Dust Moto will target a space between Surran and another competitor.

Concept

250 equivalent

“250 equivalent” means the electric bike is trying to feel like a typical 250cc dirt bike. It’s a comparison so riders can judge what to expect.

Term

pre sold

“Pre-sold” means people paid for the bikes before they were delivered. The host is pointing out that deliveries are late compared to what was expected.

Concept

kiss of death

The “kiss of death” idea is that someone might let a company struggle or fail, then buy it cheaply afterward. The host is using it to criticize how some big players handle early electric startups.

Concept

market validation

Market validation means proving people will buy the product before it’s fully available. In this story, pre-orders are treated as proof that the electric bike idea had real demand.

Concept

top of funnel

“Top of funnel” just means the early marketing stage where you’re trying to get people to notice you. The host is saying their strategy built awareness before serious buying decisions.

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