25 Ryvid | Dossier Controlling performance One of the things the team looked at closely was how much technology and adaptability to put on the machine for the end user. The conclusion was to make a bike that performs well but is simple to use, and that led to the selection of two specific off-theshelf controllers that make the bike’s operation as simple as possible. The standard bike uses a Volta power controller, while the higher-performance model uses one from ASI, manufactured in Canada. The harness is designed to fit both units and they also both work with the same batteries, giving full flexibility for users to select the performance level they require from the start. In time, the company plans to develop adaptable software and additional features, but that is simply a development of the firmware and software controlling the BMS management. One thing that was essential, however, given the operational temperatures in the target markets, was to develop programming that could manage ‘beyond-normal’ situations. In most cases, air cooling is perfectly satisfactory, but in exceptional circumstances, the motor controller can kick in and help manage the system. “There’s a lot of safeties put in place to make sure that the motor and the BMS don’t overheat, and that the controller doesn’t blow itself up,” explains Tran. “The aim was to get strong enough performance that it feels exciting to ride without overly stressing out the system. We created our own battery discharge table that controls our motor controller, so at different speeds, different performance, different temperatures, it varies the output of the battery. “We had to do a lot of custom tables to make that work well and the end user doesn’t really notice. They just know that at a certain battery range it will slow down slightly because it needs to manage its output. Obviously, this can get a lot smarter and we have every plan of making it quite a bit smarter. E-Mobility Engineering | May/June 2025 There is plenty of fun to be had from the performance of the Outset The bike has an unusual performance function – it can move in reverse
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