​Ebike Battery Math: Volts, Amps, Amp Hou...

Dec 05, 201530 Comments

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

52V battery packs, plus the 3077 FET we lov...

Nov 02, 201514 Comments

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

Water-proofing, and basic ebike trouble-sho...

Oct 23, 201513 Comments

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

Five Large Hot Rod Hubmotors for Street E-b...

Aug 10, 201510 Comments

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

Amazing new 18650 cells for E-bike batterie...

Jul 12, 201529 Comments

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,

The 3 Critical Components: Motor, Controlle...

Apr 07, 201511 Comments

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,

Motor tech: Learn the Terms-Part 1

May 14, 201417 Comments

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

Sine-wave controllers, making hub-motors su...

Sep 01, 201311 Comments

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

GNG Gen2 750W Mid-Drive Kit Review

May 01, 20137 Comments

This is an affordable and useful mid drive, if you think you would be happy with 750W…and live where there are hills. Quite a few buyers

Is My E-Bike Legal? USA Ebike Law

Apr 23, 201357 Comments

Disclaimer.  This article is not written by a lawyer, and in no way constitutes legal advice. This article is intended only as a guide to