Components

TSDZ2, mini 750W mid-drive with torque sens...

Dec 01, 201827 Comments

The TS in TSDZ2 stands for Tong Sheng, and that company decided a few years ago to make a mid drive kit that was as

Mobipus hot rod controllers, and Shenta Tsa...

Nov 19, 20182 Comments

Over the last year, I would occasionally hear about these new Mobipus controllers. Once a few hot-rodders I know got their hands on one and

What’s inside an 18650 cell? And why ...

Jul 26, 201719 Comments

There has been a boom in ebike builders making their own battery packs out of the popular 18650-format cells (18mm diameter, 65mm long), and I

The New 21700 format Lithium Cells in 2017

Jun 16, 201721 Comments

EDITOR NEWS UPDATE OCTOBER 2017: Luna Cycle  has just announced their flagship ebike the Luna Apex which has 52v 28ah in a carbon case comprised

Ferrofluid and Hubsinks for HOT Direct Driv...

Apr 02, 2017No Comments

Ferrofluid is an amazing substance if you own a large Direct Drive  hubmotor. It does NOT benefit geared hubs or mid drives, but…if you like

Upgrading Brakes, is it Worth it? (*YES!)

Feb 27, 201712 Comments

Most factory cable-operated rim brakes are actually pretty decent. Even so, their performance can be improved by simply swapping to better pads. However…I am getting

Unusual Ebike Pack Mounting Solutions

Feb 15, 20175 Comments

Most people who decide that they want to buy a kit and assemble it onto an existing bicycle frame? They have to figure out two

Vivax Assist – Doped Electric Bike

Jan 25, 20179 Comments

Please read this recent story about a groundbreaking CBS 60 minutes episode where rampant use of electric motors in sanctioned bike races was exposed. To

Polini E-P3 mid drive, dual chainrings and ...

Dec 27, 20163 Comments

There is a new player in the very large European mid drive ebike market. Polini is designed and made in Italy, and the only mystery

1500W DD hubmotors with a 35mm wide stator ...

Sep 01, 2016Comments off

This is a direct drive (DD) hubmotor that I have been waiting for someone to produce the last two years, and now, someone finally has.