FrenchUsa Posted February 18, 2022 Share Posted February 18, 2022 (edited) I watch a video made in UK, jump at 41min of the video, and he claim getting kickback at 29 miles with 26% battery. I am getting 26 miles on my S18 with 35% battery left. Is it a firmware issues or those number are correct for S20? Edited February 18, 2022 by FrenchUsa 1 Quote Link to comment Share on other sites More sharing options...
mhpr262 Posted February 18, 2022 Share Posted February 18, 2022 I was just about to post this, that result cant be true. Maybe the battery was very imbalanced at the beginning or something. At 22-23km/h I get more range than that out of my V10F, with a battery that is not even half as big as that of the S20, and that is with a 130kg rider!!! I would epxect to get at least 60 miles of range out of the S20 at that speed! Where is all the energy, more than 2200Wh, going?!?! Quote Link to comment Share on other sites More sharing options...
Mango Posted February 18, 2022 Share Posted February 18, 2022 It is rather odd Speedyfeet is mixing up imperial, metric and english units of measurements for this range test. The stated KS official 200 km range is so laughable that half that, 100 km, should be a realistic expected range for a 70kg rider going 20km/h. The more reviews coming out, the less enthusiastic I’m about this wheel. This is the following the similar hype trajectory of the S18. Begode Master is the wheel I’m leaning towards. 1 Quote Link to comment Share on other sites More sharing options...
level9 Posted February 18, 2022 Share Posted February 18, 2022 (edited) 1 hour ago, FrenchUsa said: I watch a video made in UK, jump at 41min of the video, and he claim getting kickback at 29 miles with 26% battery. I am getting 26 miles on my S18 with 35% battery left. Depends on the average riding speed. If he's showing imperial MPH avg. riding speed of 18.6, that's probably right. The faster you go, the faster it burns. My Best S18 avg. riding speed stats are: 29.4 km/h (18.27 mph) Which according to EUC World is: 82 % faster than other riders average 83 % faster than other riders average on King Song KS-S18 65 % faster than other riders average in United States I burned 40% of battery in 16 km (~10 miles) which means my max mileage would have been around ~25 miles at that speed - down to 0% battery. ...and he's still got 26% left after +29 miles. Sounds right to me... (and accounting for colder temps as Paul noted.. plus we also don't know wind resistance factors). Edited February 18, 2022 by level9 1 1 Quote Link to comment Share on other sites More sharing options...
Paul A Posted February 18, 2022 Share Posted February 18, 2022 Speedy was riding at temperature of around 5 degrees celcius. 1 Quote Link to comment Share on other sites More sharing options...
mrelwood Posted February 18, 2022 Share Posted February 18, 2022 6 minutes ago, Paul A said: Speedy was riding at temperature of around 5 degrees celcius. That is -20% of range to the wind right there, compared to summer riding. 1 Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted February 18, 2022 Share Posted February 18, 2022 Ian always gets low range. I think he is heavier than he looks, a fast rider, and the weather/cold/English bleakness does the rest. 50km at 50kph is a realistic though. The S20 has "only" 2220Wh, it's not a huge battery. It is credible that he rode it down at high speeds like this. Comparison: @Hunka Hunka Burning Lovereported getting 20km when riding his Tesla (1000Wh) fast (50kph). So you do the math for 2220Wh. Wait for a Marty range test for better numbers (Marty is a slower rider and the California weather is warmer) that might be closer to what you typically get. 1 1 Quote Link to comment Share on other sites More sharing options...
mhpr262 Posted February 18, 2022 Share Posted February 18, 2022 (edited) 40 minutes ago, Mango said: 100 km should be a realistic expected range for a 70kg rider going 20km/h. I get 52 real kms out of the 960 Wh battery of my V10F at 22km/h and with my 130kg on the pedals, in warm weather, in slightly hilly terrain and with a couple percent of dirt roads strewn in. And Inmotion doesnt discharge the cells as deeply as Kingsong. I would expect to get at least 110-115 real life kilometers of range out of the S20, even with my weight. Edited February 18, 2022 by mhpr262 Quote Link to comment Share on other sites More sharing options...
level9 Posted February 18, 2022 Share Posted February 18, 2022 It's worth noting this wheel isn't meant to be a long range cruiser wheel in any case. It would be very heavy if it was. Such a wheel (with suspension) doesn't yet exist. Just look at the Begode Hero. -400Wh less battery, tiny suspension and still weighs +3 lbs more. Kingsong probably wasn't sure if there would be a market for a +90-100 lb wheel, so they're playing it safe as they do. Maybe we'll get a long range cruiser version later.. 2 Quote Link to comment Share on other sites More sharing options...
Popular Post Tawpie Posted February 18, 2022 Popular Post Share Posted February 18, 2022 Transferring info from the S20 mega thread, evidently Ian wasn't able to update the BMS firmware so the initial numbers are suspect. Hard tiltback at 26+% surely isn't what is intended. Another data point is REVRides got nearer to 60 miles on a charge, two different riders. Lastly, the charger included with the demo wheels isn't the same one they'll deliver for production which may explain why Ian's wheel would only charge to 93%. The production charger may be a 6A charger, not 5A (according to the trailer graphics on a CN video). I'm guessing 100 km as a "planning range" is reasonable. I have no doubt Ian will retest it and confirm. 2 2 Quote Link to comment Share on other sites More sharing options...
Popular Post supercurio Posted February 18, 2022 Popular Post Share Posted February 18, 2022 (edited) Cross posting here: TLDR: Range test results are invalid because: Ian was not able to update the BMS firmware (flashing failure, Kingsong unable to help so far) Wrong BMS firmware / mainboard firmware combination leads to tiltback happening far too early (20%) Kingsong informed testers that the charger provided outputs 124V instead of 126V. Not fully charged at the beginning of the test (93% generously estimated) So for now, SpeedyFeet range test results must be discarded. However once all this is fixed, his range tests are quite useful because he tends to hammer the wheels enough to give a good sense of the "minimum range". I mean, not quite the range if you ride at 70km/h in a straight line for an hour, but on the low-ish range for most people at least 😄 Edited February 18, 2022 by supercurio 5 1 Quote Link to comment Share on other sites More sharing options...
Popular Post FrenchUsa Posted February 18, 2022 Author Popular Post Share Posted February 18, 2022 (edited) Wheels is still prototype and firmware still being working out, that why we have forum to discuss false reviews or i will say to early to do range test being prototype! Edited February 18, 2022 by FrenchUsa 1 3 Quote Link to comment Share on other sites More sharing options...
Roue Libre Posted February 21, 2022 Share Posted February 21, 2022 I'm afraid we start to see the drawback of the 126v. I could recently try a S20 (prototype in display in Brussels) and yes it's extremely reactive. But range might be the price. I won't order before we get a review of production version. I stick with my V11 for now, good suspension + very good autonomy. Quote Link to comment Share on other sites More sharing options...
Popular Post meepmeepmayer Posted February 21, 2022 Popular Post Share Posted February 21, 2022 Why would 126V give lower range? In theory higher voltages should be a little more effective, and 100V wheels have been observed to be more efficient at high speeds. It's just a Speedy Feet range test (always low results) with a not-fully-charged wheel (apparently - big deal for a range test!) so I would not put too much weight on this number. Other range tests will show what is up. It's not a 3600Wh wheel, even if everything else is top-end. Maybe range expectations are too high for that reason? 4 Quote Link to comment Share on other sites More sharing options...
FrenchUsa Posted February 22, 2022 Author Share Posted February 22, 2022 22 hours ago, Roue Libre said: I'm afraid we start to see the drawback of the 126v. I could recently try a S20 (prototype in display in Brussels) and yes it's extremely reactive. But range might be the price. I won't order before we get a review of production version. I stick with my V11 for now, good suspension + very good autonomy. I will be the guinea pig for you guys, i am keeping my order going. Quote Link to comment Share on other sites More sharing options...
level9 Posted February 23, 2022 Share Posted February 23, 2022 Speedyfeet's updated review. Range test ~26 miles. At the end of the video he admits to riding the wheel hard with the first 15 miles at 55 km/h (~31 mph) avg speed. So.. that makes perfect sense. If I rode my S18 at the 31mph max and avg speed I'd probably get between 10-15 miles out of it. The faster you go.. the faster it burns. True of any wheel.. According to EUC World, avg. speeds for most people are closer to 10-15 mph. So, most people (while continuing to ride at normal, low speeds) will likely see a 60+ mile range. 2 Quote Link to comment Share on other sites More sharing options...
DragonFZ Posted February 27, 2022 Share Posted February 27, 2022 Jimmy Chang's Range Test with the eScooter Guy 220 ish lbs aiming for 30 mph (got 19 mph avg) did 50 ish miles. Can't remember the video, I think it was RevRides or eRides did a range test with a 220 ish lbs rider aiming for 25 mph, got 56 ish miles. Hopefully, there will be more reviews on S20 range 1 Quote Link to comment Share on other sites More sharing options...
meepmeepmayer Posted February 27, 2022 Share Posted February 27, 2022 2220Wh is much, but it's not 3600Wh. Quote Link to comment Share on other sites More sharing options...
Paul A Posted February 27, 2022 Share Posted February 27, 2022 Might be the charger only capable of charging the wheel up to 93% as stated by e-rides in their video. New chargers to be supplied by KS that will charge up to 100%. 1 Quote Link to comment Share on other sites More sharing options...
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