MotoCalc Electric Flight Calculator Subscribe Recommend		Welcome to Stefan Vorkoetter's web site! I'm a full-scale and model aviation enthusiast, slide rule and calculator collector, electronics hobbyist, Hammond organ enthusiast, and software developer living on a Fjord horse farm in Ontario, Canada. This page is a gateway to the ever growing collection of articles I write describing my projects and hobbies. If your interests coincide at all with mine, I'm sure you'll find something useful here. Table of Contents Electronics Reviews Batteries and Chargers Pre-Charged (Low Self-Discharge) Rechargeable Battery Roundup Choosing and Using Nickel-Metal-Hydride (NiMH) Rechargeable Batteries Sanyo's USB Powered NiMH Charger Testing Sanyo's Eneloop Low Self-Discharge Rechargeable Battery Gadgets HP 35s Programmable Scientific Calculator The Ultra-Portable 'MoGo' Laptop Mouse Electronic Projects and Techniques Battery Charger Projects BattMan II: A Computer Controlled Battery Manager USB Powered AA NiMH and NiCd Battery Charger High Speed NiCd Charger for Electric R/C Low Cost Thermal Peak Detection NiCd Charger Projects for Radio Control Hobbyists LED Bargraph Optical Tachometer Analog Bar Graph Expanded Scale Voltmeter High-Rate Electronic Speed Control with BEC and Brake High-Rate Speed Control with Battery Eliminator Circuit (BEC) High-Rate Electronic Speed Control with Brake On/Off Motor Controller with Brake BattMan II: A Computer Controlled Battery Manager High Speed NiCd Charger for Electric R/C Low Cost Thermal Peak Detection NiCd Charger Projects for Aviators Handheld GPS Glareshield (or Dashboard) Mount with Power Supply Miscellaneous Projects Retronome - A Versatile Analog Drum Machine for My Hammond Organ Make a Dual-Boot IDE Cable Techniques and Theory How Permanent Magnet Electric Motors Work Making Excellent Printed Circuit Boards Op-Amp Oscillator Design with the HP-67 Programmable Calculator Low-Sensitivity Sallen-Key Filter Design with the HP-67 Programmable Calculator Op-Amp Gain and Offset Design with the HP-67 Programmable Calculator Electric R/C Model Airplanes Construction Projects and Reviews Electrifying the Great Planes SlowPoke Sig Riser 100 Electric Conversion Flit! A Speed 280 Four Channel Aerobat Sig Kadet LT-25 Twin Electric Conversion Trials and Tribulations of an Ace Pacer Electric Conversion Spectra-V: A Modified Great Planes Spectra GravelMaster - a Cheap Tough Speed 400 Fun Plane A Speed 400 PuddleMaster Flying Boat Power System Selection Choosing a Power System Speed 400 Upgrades Powering Sailplanes 3D Aerobatic Power Model Aircraft Power System Selection Using Your Computer: A Tutorial Introduction to MotoCalc Electric Flight Rules of Thumb Fourteen Cell Fun Motors, Gearboxes, and Propellers How Motors Work Motor Math Demystifying Gearing and Gearboxes Propeller Basics Speed 400 Upgrades Batteries, Speed Controls, and Connectors NiCd (and NiMH) Battery Care Using 1100AAU Cells for Speed 400 An Electronic Speed Control Primer The Battery Eliminator Circuit To BEC or Not To BEC Electric Flight Power Connectors What About the Wires? Electric Flight Wiring On Fuses Design and Construction Always Ready to Fly ARF Upgrades Scale Electric Design Conversion From Glow to Electric Motor Mounting Methods Battery Mounting Methods Building and Installing Skis on Your R/C Plane Electrical Techniques and Theory Measuring Up Electromagnetic Interference Reduction Let's Do the Twist How Motors Work Electric Flight Terminology More Electric Flight Terms Flying and Field Equipment Caring for Your Lead-Acid Field Battery What to Put in Your Field Box E-Flying at High Elevations Winter Electric Flight Electronic Projects LED Bargraph Optical Tachometer Analog Bar Graph Expanded Scale Voltmeter High-Rate Electronic Speed Control with BEC and Brake High-Rate Speed Control with Brake High-Rate Speed Control with Battery Eliminator Circuit (BEC) On/Off Motor Controller with Brake BattMan II: A Computer Controlled Battery Manager A High Speed NiCd Charger for Electric R/C A Low Cost Thermal Peak Detection NiCd Charger Getting the Most from Your Radio Control System R/C Aerial Photography A Collection of Aerial Photographs Summer Aerial Photos of My Farm - July 5, 1998 Winter Aerial Photos of My Farm - January 21, 1999 Electric R/C Events 1998 Kingston Ontario Electric Fun-Fly Miscellaneous Electric R/C Articles A Look at Slowflyers and Parkflyers My Fleet in the Spring of 1998 My Airplanes Before 1998 General Aviation Pilot Gear Aviator Sunglasses Checklists for the Cessna 172/152 and Diamond DA20-A1 A Tale of Two Whiz Wheels: E6-B versus CR Wind Solutions Emergency Survival Kit Aircraft Full-Scale Electric Powered Airplanes Aircraft Photos and Aerial Photography Projects for Aviators Handheld GPS Glareshield (or Dashboard) Mount with Power Supply Das Volksplane Introduction Inspiration Rudder Construction Stabilator Construction (1 of 2) - Stefan's Volksplane Homebuilt Airplane Stabilator Construction (2 of 2) - Stefan's Volksplane Homebuilt Airplane Fuselage Construction - Main Bulkheads Fuselage Construction - Firewall and Sternpost Fuselage Construction - Sides My Workshop Hammond Tonewheel Organs Repair, Maintenance, and Modifications Overhauling and Improving the Hammond M-100 Series Vibrato System Adding a Rotary Speaker to a Hammond M-111 Organ Retronome - A Versatile Analog Drum Machine for My Hammond Organ Window Seat Bookcase Tone Cabinets for a Hammond Organ Overhauling the AO-29 Amplifier in the Hammond M-100 Series Hammond Organ Tonewheel Generator Capacitor Replacement and Calibration More Hammond projects in the pipeline: Adding Foldback to the M-100 Series Spinet Adding Presets to the M-100 Series Spinet Musical Theory and Techniques The Science of Hammond Drawbar Registration Electronic Calculators My Calculator Collection Hewlett-Packard 19C Programmable LED Printing Calculator Hewlett-Packard 32E Scientific LED Calculator Hewlett-Packard 34C Programmable LED Calculator Hewlett-Packard 35s Programmable LCD Calculator Hewlett-Packard 41CX Programmable LCD Calculator Hewlett-Packard 42S Programmable LCD Calculator Hewlett-Packard 67 Programmable LED Calculator Sharp PC-1211 BASIC Programmable LCD Pocket Computer Calculator Articles Repairing an HP-41CX Programmable Calculator Software A Matrix Multi-Tool for the HP 35s Curve Fitting for the HP 35s Op-Amp Gain and Offset Design with the HP-67 Op-Amp Oscillator Design with the HP-67 Low-Sensitivity Sallen-Key Filter Design with the HP-67 Resistor Network Solver for the HP-67 Op-Amp Gain and Offset Design with the HP-41C/CV/CX Op-Amp Oscillator Design with the HP-41C/CV/CX Low-Sensitivity Sallen-Key Filter Design with the HP-41C/CV/CX Slide Rules My Slide Rule Collection Aero Products Research E6-B9 Aristo Darmstadt Nr. 867U Aristo Pocket Multilog Nr. 870 Aristo Multilog Nr. 970 Concise No. 300 Faber-Castell 111/54A Faber-Castell 2/82 Faber-Castell 2/83N Faber-Castell 62/83N Hughes-Owens 1777 (Post 1460) Jeppesen CR-3 and CR-5 Keuffel & Esser 4070-3 Keuffel & Esser 4080-3 Keuffel & Esser 4181-1 Lawrence Engineering No. 10-B Pickett N600-ES Pickett N3-T Soviet SPZ Pocket 5161-57 Sun Hemmi No. 259D Slide Rule Articles A Tale of Two Whiz Wheels: E6-B versus CR Wind Solutions Slide Rule Simulators Aristo Multilog Nr. 970 Simulator   Buy Stefan a coffee! If you've found this article useful, consider leaving a donation to help support stefanv.com   Last updated Monday December 28, 2009. E-mail Stefan   Disclaimer: Although every effort has been made to ensure accuracy and reliability, the information on this web page is presented without warranty of any kind, and Stefan Vorkoetter assumes no liability for direct or consequential damages caused by its use. It is up to you, the reader, to determine the suitability of, and assume responsibility for, the use of this information. Links to Amazon.com merchandise are provided In Association with Amazon.com. Copyright: All materials on this web site, including the text, images, and HTML mark-up, are Copyright © 2009 by Stefan Vorkoetter unless otherwise noted. All rights reserved. Unauthorized duplication prohibited. 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