EUC Addict Posted June 13, 2020 Share Posted June 13, 2020 Two Veteran Sherman riders document 200 mile (322.4 km) electric unicycle (EUC) ride from Beijing to Ulanqab. Unfortunately, the Tik Tok video does not show the start time of the trip, which begins June 13, 2020, but what is revealed is a potential new top range and a peek into the Sherman’s battery usage. (Read more) 2 Quote Link to comment Share on other sites More sharing options...
FreeRide Posted June 13, 2020 Share Posted June 13, 2020 The calculation is totally flawed, but the Sherman will have a long range obviously because it has a 3200Wh battery, and essentially Gotway Electronics, and the motor can be expected to have a similar efficiency. Quote Link to comment Share on other sites More sharing options...
EUC Addict Posted June 14, 2020 Author Share Posted June 14, 2020 47 minutes ago, FreeRide said: The calculation is totally flawed, but the Sherman will have a long range obviously because it has a 3200Wh battery, and essentially Gotway Electronics, and the motor can be expected to have a similar efficiency. How is it flawed? It's not meant to be accurate for sure, but a rough estimate. Is that what you're referring to? Quote Link to comment Share on other sites More sharing options...
FreeRide Posted June 14, 2020 Share Posted June 14, 2020 (edited) 11 hours ago, shwinston said: How is it flawed? It's not meant to be accurate for sure, but a rough estimate. Is that what you're referring to? V/m ... not valid. Never accurate, not expected to be accurate, and this is why the cheap battery gauges are not accurate. You have to consider Wh, and the remaining Wh in the battery required to run the wheel is not linear with respect to the voltage of the battery. Edited June 14, 2020 by FreeRide Quote Link to comment Share on other sites More sharing options...
Ben Kim Posted June 14, 2020 Share Posted June 14, 2020 (edited) 6 hours ago, FreeRide said: V/m ... not valid. Never accurate, not expected to be accurate, and this is why the cheap battery gauges are not accurate. You have to consider Wh, and the remaining Wh in the battery required to run the wheel is not linear with respect to the voltage of the battery. About 200 mAh per cell between 3.1 and 3.3V @ 2A so just on that difference alone the Veteran should get more range than a hypothetical 3200Wh Gotway wheel. Given the working voltage of Sanyo GA cells is 2.5-4.2V, there is plenty of headroom even at a 3.1V low voltage tiltback. I also can't imagine anyone depleting the battery to 3.1 on a daily basis given it will go ~64 miles even at full send speeds (assuming a 50Wh /mi number). Edited June 14, 2020 by Ben Kim 1 Quote Link to comment Share on other sites More sharing options...
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