ElectricMotorcycleForum.com
Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: Anx2k on September 12, 2021, 04:29:37 AM
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I just did one of my longer rides on my 2020 SRF Premium, basically a big triangle, about 300 miles or so, with the first part on slower back roads and the return on the freeway. Definitely a good learning experience, and ended up at most of my charging spots with less than 10 miles of estimated range. On my last leg to my house, I ended up having to stop at another charging station to make sure I had enough charge - then ended up not being able to charge because the battery was too hot - assuming this is why, it was right after coming off the freeway I didn't have any other options so just sat around until it would finally charge about 30 mins later (and it started charging at like 0.3 amps and slowly increased for the next hour). Anyway, my generic rule of thumb has been 1% SOC per mile - depending on speeds and how I'm riding this can be more or less - but it was primarily surface streets for the last 13 miles, so I charged to 15% SOC. On the way back, there was a detour and I managed to get lost and ended up at 0 % SOC and range - and figured I'd ride it as far as I could, but probably was going to have to push it or get a tow. I made it back to my house, and ended up riding about 2 miles at 0 SOC - so my question is this, how much range do you really have at 0 SOC? And is there something I can do to maybe increase the accuracy of the SOC? I've seen people mention riding the bike to basically 0, but just wondered how they did this exactly? Just driving in circles in a parking lot or is there ideally some easier method?
Any help or insights would be appreciated... I will say the back road portion of the ride was awesome on the SRF - the lack of sound is actually very cool on the windy roads I was on, and the lack of vibration I think made the overall ride much more enjoyable. And I had just added the Corbin saddle, so I'm sure that helped as well. ;)
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I once rode for 6 miles on my 2018S with PT after seeing a SOC of "00". It was still pulling up the hill to my home when I reached my garage. So my guess is that there is maybe 10 miles in "reserve" when you hit "0" SOC.
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Can anyone else translate this pile of gibberish? I can't understand what's trying to be communicated.
Mod edit: looks fine to us. Suggest you take your shitpost somewhere else?
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so my question is this, how much range do you really have at 0 SOC?
I would guess usually around four of five miles at slower speeds, but it varies.
At 0 SOC, I would try to go as slow as possible.
And of course, charge back up ASAP or ruin your battery as well as your battery warranty.
-Don- Reno, NV
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I learned that with lower SOC, there is some deduction applied to the SOC that is displayed in the dash. I rode my bike to 0% and further, as there was still remaining range shown. Afterwards I pulled the logfiles. I was suprised to find, that while 0% SOC was displayed, the MBB log as well as the BMS log told me that the bikes battery‘s real SOC was at 3%.
So: Check your logfiles. There seems to be a security margin.
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Can anyone else translate this pile of gibberish? I can't understand what's trying to be communicated.
It is mostly a ride report.
How far can the premium zero go at zero state of charge showing?
How can the zero owner get a display value of 0 soc to be when the bike will go no farther?
Besides riding around a parking lot in circles how can an electric motorcycle owner experiment to see the behavior approaching the point pushing or calling is necessary?
I can comnent on the last one, experiment uphill from a charging point or have a chance vehicle.
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I rode my zero s 2019 till it would not start up a few times.
I noticed that I never saw 1% SOC on my dash. it jumps from 2% to 0%. First time it happened it gave me a heart attack :P
When I hit 0% I can drive about 15km while driving with a max of 50 to 30 km/h.
The best way is probably to try it some time. I have a circle around my house of 1km. So worst case i have to push 500m ;)
After trying this a few times; you will really get to know your bike; it helped me against my range anxiety.
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I rode my zero s 2019 .........
I noticed that I never saw 1% SOC on my dash. it jumps from 2% to 0%. First time it happened it gave me a heart attack :P
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You will eventually find that the even tenths don’t have x1 (01, 21, 41, 61, & 81), only odd tenths have x1.
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I have rode 30km - 35km on 0% can't remember. But my battery is borked. in 2 weeks it is getting replaced. (2020 SR/S)
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It is all variable. I've had my FXS show 0% and 0 range left for a mile or two without issue. But I've also had the bike shut off a block after hitting 0 range.
Unless you work for zero and can install a customized firmware to your bike, you probably will not be getting the BMS' SOC displayed on your dash.
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heheh, thank you for the summary. :)
I included the details of the full ride just in case this would effect what the 0 SOC performance would be like. For example, when I was close to 0 SOC after all the freeway miles, the regen braking (which I have set a 100%) was basically non-existent - but both at the first charging stop and after the last charge stop where the bike/battery had cooled down some, the regen braking was working fine at 0 SOC. Just wasn't sure if details of the ride would be relevant, and figured a few extra sentences of details could be helpful.
And thanks for everyone who provided their experiences with range at 0 SOC.
Can anyone else translate this pile of gibberish? I can't understand what's trying to be communicated.
It is mostly a ride report.
How far can the premium zero go at zero state of charge showing?
How can the zero owner get a display value of 0 soc to be when the bike will go no farther?
Besides riding around a parking lot in circles how can an electric motorcycle owner experiment to see the behavior approaching the point pushing or calling is necessary?
I can comnent on the last one, experiment uphill from a charging point or have a chance vehicle.