Expansion Chamber Design & Analysis

Click here for Expansion Chamber videos

Engine Tuning

• 3 Part Tuning for Power
• Best No Cost Tuning Method
• Fake NGK Plugs: Part 1, Part 2, Part 3
• Engine Oils Affect On Tuning A 2 Stroke
• Fast Burn Oil Effects on Combustion PSI
• Combination 2 Stroke Tuning

Squish Band

• Squish Band Tuning
• Technical Info on 2 Stroke Squish Bands
• Combustion and Squish Bands
• Squish Volume Effect on Swirl
• How To Use My Squish Calculator

Porting

• Engine Porting Calculator v14 Usage: Part 1, Part 2
• Porting for Delivery Ratio: Part 1, Part 2
• Finding Port Durations (with subtitles)
• Suzuki AX100 Porting
• More About Porting
• Two Ways To Find Port Durations
• 2 Stroke Blowdown: Part 1, Part 2

Crank Balancing

• Understanding My Crank Balance Calculator
• Computerized Crank Balancing Basics
• Equating Balance Hole Size for my Crank Balance Calculator
• Single Cylinder Crankshaft Balancing Methods Compared

Carb Jetting

• Jetting Overview
• New 2 Stroke Jetting/CHT Data
• Jetting - 1/2 to full throttle
• Jetting - Idle and Off Idle
• Jetting for low and high load
• 2 Stroke Jetting Calc Update v12
• Jetting Calculator version 11
• About 2 Stroke Jetting, especially needles
• Benefits of a Carburetor Jetting Calculator
• Using the Jetting Calculator to find a good substitute needle (PWK 28 example)
• Keihin Needle Decoder
• Measuring Keihin Needles
• Main Jet Selection
• Main Uses of Jetting Calculator
• 2 Stroke Main Jet Sizing - Advanced Method
• Complete Motorcycle Jetting Overview
• Benefits of a Jetting Calculator

Carburetors

• Fuel Atomization & Carb Sizing
• Correct Carb Size Factors
• Carburetor Torque Wing
• Intake Flow and Surface Texture

Reed Valves

• Analyzing with my calculator

Engine Oil

• 2 Stroke Racing Oil Selection
• Maximum Safe Fuel/Oil Ratios
• Premix Ratios by Oil Specs #1
• Premix Ratios by Oil Specs #2
• Fast Burn Oil With "Slow Burn" Timing
• The Main Cause of Spooge: Part 1, Part 2
• Engine Oils Affect On Tuning A 2 Stroke
• Highly Refined 2 Stroke Engine Mineral Oil
• Does More Mineral Oil Increase Power?
• Does More Synthetic Oil Give More Power?
• Does More Castor Oil Improve Power?
• Power Increase With Castor Oil
• Does Maxima Castor 927 give more power at 32/1?

CDI

• About 2 Stroke CDIs
• CDI Ignition Timing
• KDX200 CDI ignition timing
• Analog CDI's for KDX and other 70/80s bikes

Various

• High Engine Compression
• Compression effects on Combustion Speed
• Piston Port vs Reed Valve
• Crankshaft Balancing Methods
• Fixing Pre-Powerband Power Dip
• Stock 2 Strokes Need Two Changes
• How Pipe Crud Robs Power

My Motorized Bicycle Videos

• Motorized 2 Stroke Bicycle Engine Problems+Solutions
• Motorized 2 Stroke Bicycle Engine Problems+Solutions #2
• 2 Stroke Motorized Bicycle Mods
• Adjustable CDI for Motorized Bicycles (2 stroke)
• CDI & ignition coil for Grubee bicycle engine
• Jaguar CDI sparking a gap 5x normal
• Jaguar CDI ignition curve
• About 2 Stroke CDI Ignition Timing
• Motorized Bicycle Exhaust Pipe Comparison
• 2 Stroke High Compression Considerations
• Quiet expansion chamber design
• 2 Stroke Software Overview (Excel/LibreOffice)