Automotive
- 0-60 Calculator – Calculate a rough estimate of your 0-60 time using curb weight and flywheel horsepower
- Bolt Patterns – Bolt patterns and rim sizes with widths for most cars and trucks
- Displacement Calculator – Figure out your cylinder displacement, just put in your bore and stroke
- JavaScript Tire Size Calculator – Calculator to show you the difference from one tire size to another
- The Ranger Station – Forum for all Ford RBVs (Ranger Bases Vehicles)
- Engine RPM Calculator – Planning on regearing? Check out this calculator to find out where your rpms will be
- JEEP2DIESEL.ORG – Lots of information on converting your Jeep to diesel (applies to other vehicles as well)
- Annual Test Results & Data – EPA emissions results for Motorcycles, Cars and Trucks
- Car vs Bike MPG calculator – Calculate how much you will save driving your bike instead of your car
Electronics
- DIY Stomp Boxes – Forum based site with many users, all devoted to building stomp boxes
- General Guitar Gadgets – Lots of schematics for guitar-centric projects
- Runoff Groove – Free schematics for guitar effects pedals and battery powered amps
- Smallbear Electric – Online store with effects pedal parts and more
- Tonepad.com – DIY music project resource
- 5 Bears Engineering – PCB Creation – Walk-through on how to make your own PCB
- American Wire Gauge table with load limits – Need to know how many amps can pass through your wire? Here you go.
- LM 317 Resistor Calculator – Nice little calculator to figure out resistor ratings for your LM317
- Bazz Fuss fun – Introduction to the “Bazz Fuss,” a simple guitar effect that is easy to build and still sounds good
- Analog Alchemy – Electronics projects by Joe Davidson
- Sopht amps – all tube 12v amps – Low voltage tube amp projects
- Old Tubes – Listing of almost all old audio tubes
- 50C5 SET Amp – Easy to build low parts count 5w tube amp
- Automotive Audio Calculators – Calculators for resistance, box volume, tube length and more
- Harmony Guitar Database – Excellent site with pictures, schematics and general information about Harmony guitars
- StewMac.com – Online store that has all kinds of guitar parts and electronics
- Peak SPL Calculator – Online calculator, put in your speaker and amp specs and find out how loud you really are!
- Decibel Addition – Web based calculator to add your decibels together and find total ratings.
Energy
- BTU Calculator – Calculate heat loss for your home or shop
- Maine Solar House – House in Maine entirely powered on solar: passive and active, water and pv
- Hearth.com – Forum about wood stoves and hearths
- DSIRE: Solar Incentives in Maine – Incentives and Policies regarding solar installations in Maine
- Sweep’s Library – Firewood BTU Comparison Charts – Chart listing btus and lbs/cord for many types of firewood
- Log Weight Calculator – Great little calculator for calculating the rough weight of fresh cut timber
- Watts Expansion Tank Calculator – Calculate what you need for an expansion tank in your hydronic heat system
- Mike Brown Steam Engines – High quality steam engines hand built for active use (generators and boats etc)
Mechanics
- MFG Supply – Online store carrying small engine parts and related items
- PricePoint.com – Online bicycle parts store, lots of selection
- ArboristSite.com – Arborist-centric forum, although the chainsaw crowd is the most active
- Hazen-Williams Equation – Friction head loss calculator for pipes
- Sheldon Brown Chain Maintenance – Excellent tutorial showing how to care for bicycle chains
- Chain Saw Collectors Corner – Chainsaws specs from Aircraft Specialties to Zundapp Werke and all those in between
- Baileys – Online chainsaw and logging store
- Hydraulic Cylinder Calculator – Calculator to figure out your maximum force given a certain size piston and pressure
- Aquarium System Volume Calculator – Calculate your aquarium size in gallons
- Permco Hydraulic HP Calculator – Calculator to determine your required engine hp for a hydraulic pump
- Motorcycle Tire Size Conversion – Chart comparing old and new motorcycle tire sizes
- Making Drag Pipes Work – Dyno-tested motorcycle drag pipe modifications to actually make power, not just noise
- Motorcycle Dyno Charts – Motorcycle dyno charts for many modern makes
- ATV Tire and Wheel Size Application Chart – Chart of many ATV tire/wheel combos
Technology
- EveryMac.com – Excellent resource to find out specifications on new and old Apple hardware
- Hex Color Code Generator – Generate custom hex based colors with an intuitive graphical interface
- TRC Webcams – Webcams around the state of Maine in the Three Rivers Community
- VersionTracker – Download all kinds of software updates, free software and the like
- MLCalc – Excellent loan calculator with interactive graphics
- Storm Software – Freeware programs of all shapes and sizes, including a great little Vero-board layout program as well
- Codecademy.com – Free online programming “courses”. I recommend trying out the “Getting Started With Programming” course
Tractors
- Johnny Popper Forums – Forums about Dubique built two cylinder John Deere Tractors
- The John Deere Model 40 and Other Dubuque Built Tractors of the Fifties – Self explanatory eh?
- Meyer John Deere Tractors – Stats and pictures of old John Deere Tractors
- TractorPart.com – Restoration supplies for John Deere 2 Cylinder tractors and more
- JD40.com – Info about the John Deere model 40 as well as tractor projects like a DIY backhoe
- Ford tractors – Some history about Ford Tractors
- TractorData.com – Information on all makes and models of tractors
- Antique John Deere Tractors – John Deere tractors and implements of old
- Deerely Departed – John Deere 40 parts and more
- Genesee Products – Electronic ignition conversions for old tractors, even 6volt!
