Summary of Contents for Grin Technologies Ebike
- Page 1 Grin Technologies Basics Ebike Guide © July 2013, Grin Technologies Ltd. Prepared and Illustrated by: Adam Burvill...
- Page 2 Battery The battery is where the system gets its power from. Nowadays most ebike batteries are lithium batteries, similar to those found in laptops but are about 10x the size. The battery is usually recharged by a charger plugged into a mains power outlet.
- Page 3 Considerations when buying an electric bike conversion: Will it fit? Our goal at Grin is to make ebike conversion parts as compatible as possible with regular bike standards. To that end all of our front hub motors have 100mm dropout width which is the industry standard for front forks and they fit in the vast majority of bikes.
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Page 4: Regenerative Braking
The amount that regenerative braking recharges the battery can’t really compensate for the battery discharge over the course of an ebike trip, usually about 5-10% recaptured, but it is definitely useful for saving wear and tear on the brake pads. - Page 5 Alternatively we have a range of freewheels with 11 teeth on the smallest sprocket and this allows you to keep pedaling with the ebike even as it gets up to a higher speed from the motor power.
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Page 6: Disc Brakes
Finally, make use of the ebike simulator on our website to get a good idea of the characteristics of different setups and to help make an informed decision and don’t be afraid to ask us if there’s anything you need help with! - Page 7 Ebike Glossary: When we talk about electric bikes it is quite common to refer to electrical terms that may not be familiar to those without an electronics background. Here’s a list of the most commonly terms with an short explanation to help your understanding of electric bikes.
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Page 8: Battery Management System (Bms)
Battery Management System (BMS): Ebike batteries are collections of smaller cells linked together to provide a certain voltage and capacity. The battery management system (BMS) sits between the cells and the “outside world” and helps to stop the cells from being damaged. It... - Page 9 For example, a 36V Lithium Manganese (LiMn) battery is 42V when hot off the charger, whilst it will tend to operate around 36-38V for most of the discharge. A 48V Lithium Iron Phosphate (LiFePO4) can be as high as 60V at the end of charging but will normally operate around 48-52V whilst discharging.
- Page 10 In high power ebike applications you'll often hear of "blown MOSFETs" - this just means that the switching at high power levels became too stressful for the MOSFETs and they became damaged.
- Page 11 ( ), voltage in volts (V) and current in amps (A). Some also have a "diode" or "continuity" mode useful for testing for shorts. If an ebike stops working it is the go-to tool for figuring out why (and the Cycle Analyst can be a pretty...
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