supercurio Posted March 28, 2023 Author Share Posted March 28, 2023 Absolutely brilliant testing @inMotional 👏 Quote Link to comment Share on other sites More sharing options...
Rich Sam Posted March 28, 2023 Share Posted March 28, 2023 Let me get this straight, two cutouts is all the evidence of all this conjecture? Seems a bit alarmist by nature. Even with footage of people whom know how to do big sends, doing big sends without issues. 1 Quote Link to comment Share on other sites More sharing options...
Rawnei Posted March 28, 2023 Share Posted March 28, 2023 1 hour ago, Rich Sam said: Let me get this straight, two cutouts is all the evidence of all this conjecture? Seems a bit alarmist by nature. Even with footage of people whom know how to do big sends, doing big sends without issues. I don't understand your complaint, LeaperKim is looking into it, if this is an actual technical issue that will get fixed we're all winners here. 1 Quote Link to comment Share on other sites More sharing options...
techyiam Posted March 28, 2023 Share Posted March 28, 2023 22 hours ago, chanman said: I know the S22 has 5x680uF, 21 hours ago, chanman said: the V13 is almost 3 times with 18x220uF. By me adding 4 additional capacitors to Abrams, I now have 6x560uF. The motor does run a lot smoother, more responsive, and quieter. S22: 5x680uF = 3400 uF V13: 18x220uF = 3960puF Abrams: 6x560 = 3360 uF. Quote Link to comment Share on other sites More sharing options...
chanman Posted March 28, 2023 Share Posted March 28, 2023 I guess for fun someone could modify their sherman-s controller with additional capacitors and see if that helps the issue. Given the big begode wheels are still in the 1-1.5mF range it would appear they aren't strictly necessary, but it's possible it could help if the problem is related to current demand spikes. 1 Quote Link to comment Share on other sites More sharing options...
Popular Post supercurio Posted March 28, 2023 Author Popular Post Share Posted March 28, 2023 (edited) 5 hours ago, Rich Sam said: Let me get this straight, two cutouts is all the evidence of all this conjecture? Seems a bit alarmist by nature. Even with footage of people whom know how to do big sends, doing big sends without issues. I understand the skepticism, and it is true that in the beginning the has not been that much to work with why I called it an early pattern. It's a bit like when we saw OG Sherman controllers burning during climbs in the early Chinese tests, or V12 cutting out burning their controllers early on. Would it be alarmist to say it showed a problem? There are things which are a bit odd and not supposed to happen and good to pay attention to. Sherman S cutting out on landings have been one of them, popping up in various feeds. Sherman controllers? I burned 2. V12 cutouts? Global recall. Correct it started with 2 confirmed cutouts. Then Patton doing the same thing from my Chinese source with the info that LeaperKim is looking into it, that's 3. Is it confirmed officially by @Linnea Veteran? Not yet. I'm guessing it doesn't fit very well in the marketing strategy on this new model. On Facebook we have one more fitting the pattern, that's 4Another one that could but might be just acceptable given the conditions Then @inMotional's report of cutout when pushing up stairs is very interesting too. So yeah it might lead nowhere, I can't guarantee that whatever it is up here will be fixed. But it's worth pushing to get this figured out. Edited March 28, 2023 by supercurio 4 Quote Link to comment Share on other sites More sharing options...
MrMonoWheel Posted March 29, 2023 Share Posted March 29, 2023 Im dead tired so I haven't reviewed all the replies in this thread yet, but from the video it seems the wheel simply was over torqued, even if just for a split second. That current spike is more than enough to overwhelm the electronics. I don't see an issue. Quote Link to comment Share on other sites More sharing options...
supercurio Posted March 29, 2023 Author Share Posted March 29, 2023 Unofficial update. LeaperKim continues its investigation and does not have a clear path on how to fix or improve this yet. Several options are considered starting with firmware tuning. If it doesn't produce the results desired adding more hall sensors in the motor in future production could be considered. There was even some discussion between manufacturers on that topic. Therefore the focus at the moment is on hall sensor signal input and processing when the motor instantly changes rotation direction, more than on power delivery. It was suggested to get expert jumpers in the loop in order to understand how much resistance to cutout is expected in order to match this level of performance and safety. So I'll use my connection with reviewers to try to get this started. In the meantime @inMotional, some questions and requests: Is your Sherman S untouched out of the box, or was the wheel opened for any reason - like tire change? The reason I asked is that I talked to a Sherman S owner who's wheel would cutout if he pressed on the top cover firmly after changing the tire, and that was solved by better cable management. Would you be able to record in video either another cutout or where/how it tends to happen? I'll try to get that to LeaperKim so they can try to reproduce. If it's for the same cause as the the landing cutout then it's a breakthrough. We should figure out if it's only your unit or all of then. 2 Quote Link to comment Share on other sites More sharing options...
inMotional Posted March 29, 2023 Share Posted March 29, 2023 2 hours ago, supercurio said: Is your Sherman S untouched out of the box, or was the wheel opened for any reason - like tire change? The reason I asked is that I talked to a Sherman S owner who's wheel would cutout if he pressed on the top cover firmly after changing the tire, and that was solved by better cable management. Definitely untouched and not opened. The first incident happened on my first real world ride. Like after 5-10 km. The only change is the soft mode setting. 2 hours ago, supercurio said: Would you be able to record in video either another cutout or where/how it tends to happen? I'll try to find a pattern that reproduces the behavior. My first effort today was unsuccessful. Will play around with the high speed setting and try again 1 Quote Link to comment Share on other sites More sharing options...
Tasku Posted March 29, 2023 Share Posted March 29, 2023 1 hour ago, inMotional said: I'll try to find a pattern that reproduces the behavior. My first effort today was unsuccessful. Will play around with the high speed setting and try again There could be a risk involved in this. Is it possible to contact the shop where you purchased it and make warranty action for the investigation? Just to be on safe side. 2 Quote Link to comment Share on other sites More sharing options...
Rawnei Posted April 2, 2023 Share Posted April 2, 2023 According to sources on telegram this is a firmware bug and LeaperKim will put out a firmware update to fix it. 1 Quote Link to comment Share on other sites More sharing options...
supercurio Posted April 2, 2023 Author Share Posted April 2, 2023 Good news indeed @Rawnei, tho let's see how testing goes to confirm the potency of the fix Here's the source "The ElectricMonkey" on Telegram, a Patton tester 2 Quote Link to comment Share on other sites More sharing options...
Rollin-on-1 Posted April 11, 2023 Share Posted April 11, 2023 Any updates on the effectiveness of the FW update? I haven't heard much about it lately on Telegram. I'm hoping no news is good news. Quote Link to comment Share on other sites More sharing options...
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