![]() ![]() In the video below I show the bike I chose, then I demonstrate the building process and test out the final e-bike. Yet another reason not to use a cheap department store bike. Thus, 40 mph on a smooth street is definitely within the design tolerances of a good quality mountain bike. The frames are rugged because they are meant to bounce off boulders and tree roots while racing down mountain trails. High quality mountain bikes were built to handle speeds over 40 mph because you can easily hit those speeds on hills, though you may want to upgrade your brakes if you’ll be sustaining such speeds. However, if you start with a high quality bicycle, you can still build a safe machine. This is definitely true, any sort of tinkering will void your warranty. Each will have some generic statement about how this voids their warranty and the bikes weren’t designed for such applications. A used downhill bike will still be high quality, but won’t have the same high price tag.Ī quick note about donor bikes: no bicycle brand will condone you turning their bike into an electric bicycle. Downhill bikes are built to handle extreme terrain and thus make great high speed electric bicycles. But decent Shimano hydraulic brakes can be found for around $70 to add to any bike.Īnother good option would be to start with a used downhill bike. One component I would have liked to have on this donor bike is hydraulic brakes, which would be nice for stopping at these speeds. This is a nice balance between a full suspension bicycle that has high enough quality to be safe, while not breaking the bank with a $2,000 bike. I’m using a Motobecane Jubilee FS bike, which costs around $600. However, please do not use a cheap department store full suspension bike. Full suspension smooths out the ride and can keep you from getting jarred when hitting a pothole at 40 mph (64 km/h). I recommend using a full suspension bicycle when building a high speed electric bike. We’ll start with the donor bike, which we’ll convert to an electric bike. If you plan to build a fast electric bicycle, please pay attention to every safety advisory.] Choosing a donor bike for a fast electric bicycleĬomponent choice is critical, as this is what will make your e-bike safe and effective. Lastly, there are multiple safety advisories peppered throughout this article. Depending on local laws, this could be an “on private property only” project, or may require adding mirrors and lights before registering as a moped or light motorcycle. Please start with a tamer, more reasonably-powered electric bicycle first.Īdditionally, please check your local laws to determine if a fast electric bicycle is legal in your area. Please do not attempt to build your own high speed e-bike if you do not already have experience building custom electric bicycles. [Disclaimer: Fast electric bicycles can be dangerous. Read on to see how to build your own DIY fast electric bicycle. That’s why I decided to build my own, with the goal of reaching 40 mph (64 km/h). However, there aren’t many commercially available options for fast electric bicycles. With so many people commuting on electric bicycles, the extra speed of a fast electric bicycle is a nice addition for many, allowing them keep up with traffic. That’s fine for pleasure riding, but it leaves many enthusiasts looking for more speed. Outside of a few exceptions, most electric bicycles fall in the 15-28 mph (25-45 km/h) range. It seems like every week we hear about another new model entering the market. ![]()
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