Kingsong S20/S22 (Confirmed)

[Tawpie]

I'm wondering if you used the "custom" battery percentage feature of EUCWorld if the battery % would make more sense on the EUCW display (126V = full, 99V = empty, although given how quickly the pack drops voltage when it's nearly exhausted I might set the 'empty' to 101V so there's a little warning). Obviously KS still hasn't gotten that little detail worked out yet!

[Elliott Reitz]

18 minutes ago, Tawpie said:

I'm wondering if you used the "custom" battery percentage feature of EUCWorld if the battery % would make more sense on the EUCW display (126V = full, 99V = empty, although given how quickly the pack drops voltage when it's nearly exhausted I might set the 'empty' to 101V so there's a little warning). Obviously KS still hasn't gotten that little detail worked out yet!

Yea I'm sure the 100% isn't correct.   So looking at some battery discharge curves (Understanding Charge-Discharge Curves of Li-ion Cells • EVreporter) I have the impression that 3.0V cell voltage = 0% (voltage dropping out knee).  The per cell of 126V is 4.2 so (3/4.2)*126 = 90V.  ... well pucned this into excel, comes out 81% remaining. 

= (119.22-90)/ (126-(3/4.2)*(126))

0.811666...

= 81% remaining after 12.76 miles.

 

Edited April 8, 2022 by Elliott Reitz

[chanman]

There's some additional complications of the 124V charger output shipped with some (all so far?) wheels not giving a full capacity charge which I think has resulted in some underreporting of the range.

[Elliott Reitz]

9 minutes ago, chanman said:

There's some additional complications of the 124V charger output shipped with some (all so far?) wheels not giving a full capacity charge which I think has resulted in some underreporting of the range.

My wheel only charges to 124.2V according to the app.  I did use a multimeter to measure the charger directly and its outputting 127V.  So now I'm wondering what the actual battery voltage inside the wheel really is(?).  or is it another app problem.  hmm (except the KS app says the same).

Edited April 8, 2022 by Elliott Reitz

[Bizra6ot]

On 4/8/2022 at 12:44 AM, supercurio said:

If there's any doubt with @Brendan "nog3" Halliday wrote (really should not), the 2.19 Changelog contains:

C. Optimized the motor drive part to make the output power larger.

 

9 hours ago, Blunzn said:

 

On one hand the changelog and @Brendan "nog3" Halliday states that, and on the other hand in a comment from The EUCster under the video @Ginger On Wheels replies by showing a short video https://fb.watch/cg0ZXCBPAR/ where the wheel has the latest FW up to date but seems even more feverish than before as we could see for example on the Wrongway video which showed the pedal dip on a steep slope, yet here the slope seems to be much less steep

What to think about it?

[techyiam]

4 hours ago, Bizra6ot said:

What to think about it?

@Ginger On Wheels did say in his video that he felt his demo wheel S22 was a bit more powerful than his Sherman, as he was going up the incline. However, Hsiang said in his S20 vs Sherman video, that he felt his Sherman has a slight edge over his demo wheel KS S20B below 20 mph. 

I think to be clear and convincing, the easiest way to show the difference is to have a S22 and a KS S20B go up the same incline by the same rider back to back.

My gut feeling tells me that, for those who are expecting the S22 to outperform the RS19, EX-N, or better Begode wheels at the low end are going to be disappointed for the current batch. 

Edited April 9, 2022 by techyiam

[Blunzn]

2 new vids

 

[madbikes]

Cutting spring in any length to make it fit is not the best thing to do.

[Eucner]

24 minutes ago, madbikes said:

Cutting spring in any length to make it fit is not the best thing to do.

Very true. It also makes the spring stiffer, when he wanted it looser.

[Blunzn]

25 minutes ago, madbikes said:

Cutting spring in any length to make it fit is not the best thing to do.

from his commentsection

[Elliott Reitz]

Cutting the spring?  Well at least I didn't do it with my torches.  I almost did but decided I could do a neeter job with the angle grinder.  Anyway, cross-posting this with my new thread for spring changes:  

On that thread is my ride today the ride validated the jumping test in the garage.  The stopper moved about the same.  Highest drop-off was about 2'.  

 

Edited May 27, 2022 by Elliott Reitz
bold the cross-thread ref.

[Paul A]

#S22 #EAGLE Challenge of the Extreme Slope

56 views

Apr 11, 2022

King Song International

3.66K subscribers

 

[Paul A]

Why are Electric Unicycle So damn EXPENSIVE?!

3,678 views

Apr 11, 2022

Hsiang

13.9K subscribers

 

[techyiam]

59 minutes ago, Paul A said:

S22 #EAGLE Challenge of the Extreme Slope

Kudos to the rider in the video. Job well done. And a nice conquest pose at the end. However, we were also shown S20's before, where riders were able to climb 50/40 degrees slope, but only to be disappointed after watching it being out done by a V11 in the hands of a Youtuber on a mundane slope. And once again it appears we are faced with discrepancy. In the words of @Ginger On Wheels, that without some momentum, his S22 with him on it, would not have been able to roll up a modest slope at the end of a gravel pathway. What gives? 

[Rawnei]

4 minutes ago, techyiam said:

Kudos to the rider in the video. Job well done. And a nice conquest pose at the end. However, we were also shown S20's before, where riders were able to climb 50/40 degrees slope, but only to be disappointed after watching it being out done by a V11 in the hands of a Youtuber on a mundane slope. And once again it appears we are faced with discrepancy. In the words of @Ginger On Wheels, that without some momentum, his S22 with him on it, would not have been able to roll up a modest slope at the end of a gravel pathway. What gives? 

If you are talking about Wrong Way on the dirt hill (difficult to tell exactly what you are referring to) the S20 handled it just fine until it lost traction on loose dirt/sand.. same place where the V11 in question motherboard burned up attempting to do the same thing the day after.

[techyiam]

1 hour ago, Rawnei said:

If you are talking about Wrong Way on the dirt hill (difficult to tell exactly what you are referring to) the S20 handled it just fine until it lost traction on loose dirt/sand.. same place where the V11 in question motherboard burned up attempting to do the same thing the day after.

You are entitled to your very own interpretation of what transpired, but it is in no way in agreement with what Wrongway described in his very own words. For the S20, he used adjectives and phrases such as "lack of torque", and overpowered. The V11 fried its mainboard on his fifth attempt or there abouts. But that in itself doesn't mean it has less torque than the S20. In fact, Wrongway feels the V11 had more torque. The S20 just tilted back and made him lose balance instead. However, Wrongway believes the V11 may need better temperature monitoring, and better warning.

But let's not lose the plot here. We are only talking about the V11, which isn't exactly a torque monster. In Wrongway's V11 video review, he had great difficulties going up a short 40 degrees, hard-surfaced slope. And the S20 was being shown climbing a long 50 degrees dirt hill. Big difference. 

The videos are timed stamped. Watch them to hear from the horse's mouth.

 

 

 

 

 

 

Edited April 11, 2022 by techyiam

[Rawnei]

1 hour ago, techyiam said:

You are entitled to your very own interpretation of what transpired, but it is in no way in agreement with what Wrongway described in his very own words. For the S20, he used adjectives and phrases such as "lack of torque", and overpowered. The V11 fried its mainboard on his fifth attempt or there abouts. But that in itself doesn't mean it has less torque than the S20. In fact, Wrongway feels the V11 had more torque. The S20 just tilted back and made him lose balance instead. However, Wrongway believes the V11 may need better temperature monitoring, and better warning.

But let's not lose the plot here. We are only talking about the V11, which isn't exactly a torque monster. In Wrongway's V11 video review, he had great difficulties going up a short 40 degrees, hard-surfaced slope. And the S20 was being shown climbing a long 50 degrees dirt hill. Big difference. 

The videos are timed stamped. Watch them to hear from the horse's mouth.

I have eyes so I can see for myself in the videos that he uploaded what happened, and the plot seems to be that you are on a crusade against the S20 for some reason, not even the S20 going up that same hill as the Master or Sherman Max seems to convince you that it has enough torque to go up a steep hill instead your are searching actively for contradicting information, what is that all about?

[Paul A]

Kingsong S20 uphill

4,183 views

Mar 16, 2022

EUC Serbia

368 subscribers

 

Kingsong S20 downhill uphill

4,144 views

Mar 14, 2022

EUC Serbia

368 subscribers

 

[Bizra6ot]

It looks like tiktok life hacks that never work in real life

Expected: KS team succeeds on 50° steep slope

Reality: https://fb.watch/cg0ZXCBPAR/

[techyiam]

On 4/11/2022 at 6:56 AM, Rawnei said:

I have eyes so I can see for myself in the videos that he uploaded what happened

Certainly it is your prerogative to dismiss Wrongway's thought on the matter. Are you doing the same with @Ginger On Wheels's testimony on the S22 too?

 

On 4/11/2022 at 6:56 AM, Rawnei said:

the plot seems to be that you are on a crusade against the S20 for some reason, not even the S20 going up that same hill as the Master or Sherman Max seems to convince you that it has enough torque to go up a steep hill instead your are searching actively for contradicting information, what is that all about?

Both Wrongway and Gingeronwheels are main YouTubers. Wrongway's videos on the S20 have 17k, and 13k views. What are you spinning about? Actively searching? Wow!

If you mean Marty's video with Eevees owners riding along, that provides a data point too. But that in no way is comparable to climbing a 50 degrees dirt hill. So where is the relevance?

 

Edited April 13, 2022 by techyiam

[techyiam]

@Paul A That is exactly my point. 

[mrelwood]

Asian riders tend to be much lighter than even Adam WrongWay, which can explain the inconsistency of the various tests. Add a bit of US average in the mix and the results can again be quite different.

[Paul A]

https://en.wikipedia.org/wiki/Human_body_weight

 

 

[Rawnei]

14 minutes ago, mrelwood said:

Asian riders tend to be much lighter than even Adam WrongWay, which can explain the inconsistency of the various tests. Add a bit of US average in the mix and the results can again be quite different.

For sure, and it's also a big spectrum between a lighter rider going up a steep slope or a heavier rider trying to torque it up some steps or rev it up through loose dirt (as if that's the norm), simply with all wheels we don't know truly what their limits are until more people have ridden them and some sort of community consensus can be reached. The S20 specially shows how subjective the riding experience can be, some experienced riders who rode it are praising it for how amazing it feels and all the potential it unlocks while others are saying it lacks torque and is weak, what conclusions can we truly draw from all that conflicting information? Well I'm no psychic so I will reserve my opinion for when I actually tried it myself instead of cherry picking what I want to hear.

Edited April 11, 2022 by Rawnei

[Paul A]

https://www.livescience.com/36470-human-population-weight.html

May 30, 2013

The Weight of the World: Researchers Weigh Human Population

The average body mass, globally, was 136 pounds (62 kilograms.)

In North America, which has the highest average body mass of any continent, the number was 178 pounds (80.7 kg).

North America has only 6 percent of the world's population, but 34 percent all the human biomass in the world that is due to obesity, the researchers said.

In contrast, Asia has 61 percent of the world's population, but only 13 percent of the world's biomass due to obesity.

 

If all countries had the same average BMI as the United States, the total human biomass would increase by 63 million tons (58 million metric tons), equivalent to the weight of of 473 million people, the researchers said.

The study is published today (June 17) in the journal BMC Public Health.