Unlike many other electric bicycles, the E3 Ultra has three speeds on the front chain ring and nine on the rear. Even a small crack could start to let water in and that would be bad. I also found that because the battery and down tube extend below the front chain rings, if you go up a big curb you will actually bonk your down tube and could crack the battery cap or cause other damage to a very sensitive area of the bike. This means you have to plan your round trip at less than or equal to ~20 miles and you probably shouldn’t store the bike outside since the battery will be there too and people can mess with it or water could start to corrode it. This design is stronger and lighter than some alternatives but the trade off is clear, you can’t charge the battery without bringing the bike along and that may not fly at your office or wherever you usually charge. It’s lodged near the center of the down tube with the controller and wiring located near the bottom where there’s a plastic cap. You really can’t remove the battery on this bike without extreme effort. This bike has done a decent job in terms of design but the trade off Currie made was with ease of battery removal. It’s a way to lower the center of gravity, protect the battery and make the bike look more natural. Many electric bikes are starting to integrate their battery packs right into the down tube as the E3 Ultra has done. There was even a stretch where I took advantage of the lock-out on the fork to improve pedaling input and get rid of bobbing. To my surprise, the seat shock and fork performed very well. I don’t like getting bounced around and this design is a bit more road-style than cruiser. At first I was concerned how this bike would perform in terms of ergonomics going over all of the bumps. There is also construction, a few sidewalk sections, several lights and a dirt stretch. I commute to work by bicycle every single day and there are some big hills along the way. This bike was designed for pedaling and is one of the fastest riding ebikes around. The frame is solid, fast and light weight – especially considering how much power it packs in! The tires are thin and firm which lets it coast extremely well, extending range and making cornering a very comfortable experience. That is not the case with the Currie IZIP E3 Ultra, this bike was built for pedaling performance. In most cases this means the bike frame gets larger, flexier and less responsive. Electric bikes tend to be heavy and require a sturdy purpose-built frame to support the motor and battery.
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