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Technical Articles by Michael Traum

Organized by topic, and in no particular order.
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Energy Systems
Combustion Engines
The Good Ship Eva


Glossary of Terms - New terminology coined by Michael Traum.

Photography and Videography - Fixing images and getting them to dance.

Sony APS-C Cameras - Standard size digital sensors abord Eva.

Printing - Putting text and images to paper.

Classes of Errors in Writing

The Internet - From email to Paypal.

The Emoji - Embeded symbols and eight bit storage.

Energy Systems

Lead Acid Basics - An introduction to lead acid storage batteries.

Lithium Ion Batteries - The long awaited highly functional storage battery.

Electric Motors and Generators - Types, application and limitations.

Generator Sets - Turning fuel into electricity.

Solar Electric - Harnessing the power of the sun.

Heating Ventilating and Air Conditioning - Making living spaces livable.

Petroleum - The world's slowest charging battery.

Evolutionary Cosmology - Answering the big question.

Combustion Engines

Diesel Basics - The basics of diesel engine operation.

Small Marine Diesel Engines - A compendium of the few small direct injection engines that have been available.

Fuel Properties - How fuel burns, and what it means for engine design and operation.

Timing - Time of late compression ignition, engine speed, mean piston speed and temperature of combustion potential.

Small Bore - Unique Tuning Challenges for Small Gasoline Engines.

General Trends in Combustion Fuel Properties

Non-Homogeneous Gasoline - Types of potential problems and consequences for engine performance.

The Advance Myth - Correct advance as opposed to lots of advance in gasoline engines.

Compression Ratio Modification - Ease of modification of existing engines by valvetrain type.

Ethanol - The ins and outs of alcohol as a motor vehicle fuel.

Ring Structures - More pop per gallon.

Precise Jetting - Needle Shanks and Half Clip Positions.

Points Ignition Systems - Providing the spark for spark ignition engines.

Canted Valve Engines - Angled valves for better flow.

Camshafts and Valve Timing Systems - How, when and why valves are opened.

Camshaft Conundrum - How the shape of the circle caused excessively long stroke lengths in gasoline engines.

Rod Bearing Size - Oversize bearings mask reality.

Flatheads for (N)Ever - Why sidevalve engines were slow and dirty.

Exhaust and Exhaust Muffling - Quiet does not mean slow, but fast does tend to be loud.

Fixed Crankshaft Engines - Spining the cylinders to eliminate reciprocating losses.


2017 Updates on Various 1991 Husqvarnas

Confessions of a Long Stroke Wheeler - A Willies Powered 1942 Ford GPW.

Yamaha WR250F High Fuel Consumption - An open letter to Dirt Bike Magazine.

Wheelin' a 1961 Dodge W100

Car 54 Where Are You? - The 1954 Ford Automobile

Mustang Analysis - Why the first generation Ford Mustang felt slow.

Fuel Hogs - Why motorcycles get such poor mileage.

Dirt Bikes - The real motorcycles.

Husqvarnas - A personal quest for the early Husqvarna four stroke dirt bike.

Resurrecting the 1991 Husqvarna WMX 610 - The original four stroke motorcrosser rides again.

1999 Husqvarna TE 410 - The Lengthened 1999 Connecting Rod and Stroker 610 Ideas

1999 Husqvarna WMX 410 - Suspesion Upgrade

KTM White Power Suspension - 1990's KTM WP Suspension as Upgrade for Husqvarna Enduro Bikes

1986 Husqvarna 400 Enduro - The Swedish Two Stroke

1987 Husqvarna 430 WR - The big bore two stroke gets a manual transmission.

Husqvarna 250 Two Stroke - A Short Stroke Length Water Cooled 250.

Points at 11.3:1 - The rebuilt Husqvarna 610 motor gets a points ignition system.

Regular Racer - The Husqvarna 610 gets a 12.5:1 compression ratio.

A Tale of Two Huskies - Two more 1991 Husqvarna WMX 610 race bikes enter the pack.

A Period Correct Big Cam 1991 Husqvarna WMX 610 - Camming up the stock SEM ignition.

Lean Stumbling - Excessive Stock Spark Advance on the Period Correct WMX 610.

The 475 Big Bore - Going Big for Less Displacement.

1992 Husqvarna Suspension Upgrades - A Sachs Shock Yields Big Improvements.

A 1987 Husqvarna 510 XC - Newer 40mm WP forks and a better Ohlins Shock.

The Lifan Husqvarnas - Small Displacement Big Problems.

Shocking Success - A 1991 Husqvarna WMX 386 and various suspension adventures.

Variation Between Gears - The Husqvarna six speed transmission.

Husky History - 100 years of Husqvarna Motorcycles.

The First Generation Audi 5000 - A lightweight design that still impresses 40 years later.

The 2015 Volkswagens and Audis - Large additional performance improvements.

Maximum Compression Ratios - Putting the squeeze to gasoline.

Traction Control and Suspension - From preventing wheel spin to active stability control.

Steel - It's what's for building.

Structural Analysis - Predicting when something might break and a bit about how and why.

The Good Ship Eva

Failure Fiasco - Equipment failure on board Eva.

Relamination - A new epoxy bottom for Eva.

Fuel Tank Replacement - An integral tank in Eva's bilge.

Drinking Water - Eva's water system and water quality.

A Basis for the Clarification of Nutrients and Drugs

Electric Land Dinghies - Extra Vehicular Activity aboard Eva.

The Norsea 27 - Why this small 40 year old design works.

Sails and Sailing - Turning the wind into a driving force.