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Sine-wave controllers, making hub-motors super quiet
Sine-wave controllers are starting to get some interest, so we thought some of our readers would like to know what the benefits are, so they can decide if one of these is the right choice for them. The...
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Motor tech: Learn the Terms-Part 1
Most new E-bikers don’t care about the details inside the motors that we ride, as long as they just work. But occasionally we use terms in our articles to describe some characteristic about electric...
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Ingredients for Fast Electric Bike: Motor, Controller, and Battery
Hot-rodding an ebike is not as simple as some people might think. That is because you need to consider 3 critical interlinked components when hot-rodding, and if you don’t change all 3 components,...
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Large Hot Rod Hubmotors for Street E-bikes, the Double D’s
Direct drive hubmotors have remained popular for street E-bikes that are running hot rod amounts of power. Here is a list of some of the more popular rear hubs for building up a street-fighter E-bike...
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Water-proofing, and basic ebike trouble-shooting
Sooner or later, even the most expensive ebike can have a minor glitch. The problem is that…right now there aren’t a lot of ebike mechanics out there. If you have a factory turn-key ebike, they might...
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52V battery packs, plus the 3077 FET we love, and you should too.
For years, the electric bicycle market used legacy designations for power system voltages, like 24V, 36V and 48V. This was because the earliest systems used the common 12V Sealed Lead Acid (SLA)...
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Ebike Battery Math: Volts, Amps, Amp Hours, Watt Hours
These days, awesome ebike battery packs constructed of quality 18650 cells are available to average bike builders thanks to advances in 18650 DIY pack building methods and vendors such as Luna Cycle...
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The 3 Critical Components: Motor, Controller, and Battery
Hot-rodding an ebike is not as simple as some people might think. That is because you need to consider three critical interlinked components when hot-rodding, and if you don’t change all three...
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Mid Drive Kits, Dump the Derailleur and get an IGH?
The popular Bafang BBS02 and BBSHD mid drives are introducing an entirely new generation to electric bikes. Many of these new ebikers are asking about the option of using an Internally Geared Hub...
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Ebike charging for long Battery life
Ebike charging for long Battery life So, you want your battery to last a long time?…remember that most people will not ride their ebike 500 times in their lifetime. Maybe hard to believe, but 500...
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Ebike charging for long Battery life
Ebike charging for long Battery life So, you want your battery to last a long time?…remember that most people will not ride their ebike 500 times in their lifetime. Maybe hard to believe, but 500...
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Motor Tech: learn the terms, Part-2
If you actually know anything about electric motor technology, and you don’t hate me yet? Buckle up…this article is going to be a bumpy ride. I think I have a firm command of the terms that define the...
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Amazing new 18650 cells for E-bike batteries in 2015
The new 18650-format cells that are just now becoming available are an exciting milestone that changes everything in the high-performance E-bike world. Back in 2013, we wrote about the trend of E-bikes...
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How to make a lithium battery last, or…kill it, if you like.
We have written in the past about tips that will help your expensive lithium battery pack last as long as possible. This article will cover some additional information about what happens inside the...
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An introduction to lithium 18650 batteries
The development of electrical transport, from skateboards and scooters to buses and trucks, has been an evolution of battery power. We’ve been able to store electrical energy for several centuries, but...
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Ebike charging for long Battery life
Ebike charging for long Battery life So, you want your battery to last a long time?…remember that most people will not ride their ebike 500 times in their lifetime. Maybe hard to believe, but 500...
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Making a Resistance Soldering Unit, and maybe a spot-welder too…
Most ebike builders have never seen a resistance soldering unit, so they don’t know that it’s an option when you are moving up to soldering larger connectors. If you want to buy one, they are...
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Bafang Ultra Max, the new big dog on the porch
The Bafang Ultra Max mid-drive has the biggest motor you can buy in a factory turn-key ebike right now. It is labeled as a 1,000W drive, but…it is capable of MUCH more. Not only that, it has ISIS...
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Switched Reluctance motors, an old design is suddenly important now
Reluctance is an engineering term that (as far as I can tell) means that when you create an electromagnetic field (in the shape of a loop)…any steel part that is located near that field is “reluctant”...
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Electric vs Gas vs Diesel: When is a horsepower not really a horsepower?
I’ve driven every single fast car, fast motorcycle, big truck, and electric anything I can get my hands on in the past 30 years. I’ve always made a mental note of how many ‘horsepower’ whatever device...
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