There have been several major technology breakthroughs in the last few years with ebikes. Lithium batteries have completely eclipsed all over battery technologies for ebikes due to their light weight and ability to put out massive amounts of power. Neodymium Magnets (also known as rare earth magnets) reached the price point to be used in…
When planning and designing an ebike build one of the first questions that a builder needs to ask themselves is how much power do they really need? A perfect build would have enough power to get up the biggest hill in your commute at the speed you want to go uphill at and would also…
A lot of people have been asking me about the MXUS XF40-45H 3000W direct drive hub motor. In general I tend to steer people towards mid-drive systems (see why here). This is mostly because I don’t like the idea of having a 20 lb hub motor in my rear wheel. That being said there is…
This post is designed to help people navigate the world of cheap Chinese ebike products without ending up getting ripped off and saving the most money they possibly can. Where to buy from The three big options for chinese goods are Ebay, Alibaba\Aliexpress and direct from a Chinese vendor’s website. Each of these options have…
If you mount a hub motor that is over 500 watts on any bike frame you’re going to want to use a Torque arm to prevent your dropouts from opening up under load and in some cases catastrophically failing. There are a couple good options from Grin Tech that involve hoseclamps (the v3 and 4v…
The FatMAC from em3ev has finally arrived in the US. We received our first one today. It looks to be a little over a pound heavier than the standard mac. The spacing is insane on this motor. It will easily fit a 205mm dropout with a few washers. The rotor mount is pretty far in…
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