trya

King Song 2017 plans

84 posts in this topic

1 hour ago, Cloud said:
2 hours ago, trya said:

KS-18A с 2000w motor, max speed: 60-70km/h, February 

Suicidal. Gotway/Kingsong performance race can get ridicuous sometimes.

this is most likely a cut-off speed, the actual riding max speed should be at most 45-50, they think...

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I thought the KS16S was scheduled for January, is it a typo because the rest of the list is in chronological order and it says "mid" june, that's pretty specific compared to the others only stating months?

For the 18" 2000W motor I think more power is needed for 60 km/h anyway, but it would be great for max 40-45 km/h! 16" diameter is better for 20-30 km/h, 18" for 30-40 km/h. 40-50 km/h range would be better with 20" and 50-60 km/h needs probably at least 22". Without suspension 60 km/h is too fast for an 18" tire even with 10 kW power...

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:D  Without suspension wheel 18"  Is not too small for 60 km/h :D and even more than 90 kmh is ok !  :D:P ( This is a lot of the smaller wheel and without suspension  )

 

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Haha that's a funny machine! But a bike has a wheel base i.e. the distance between the wheels and also handles to hold onto and a seat too!

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3 hours ago, nomad said:

thought the KS16S was scheduled for January, is it a typo because the rest of the list is in chronological order and it says "mid" june, that's pretty specific compared to the others only stating months?

correct, thanks! @EcoDriftconfirmed the typo, I changed it

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2 hours ago, Jason McNeil said:

I'm going to go out on a limb & say I think KS need to rethink their developmental priorities. If the goal is to break the land speed record riding through a shopping center on one Wheel, great, but if they want a successful long-term business, then I think they should be focusing App development, improving waterproofing, serviceability & reliability. I don't believe there is the remotest chance of any regulatory body approving a >40kph Wheel. 

Agreed. And, outside of that approval...how many people would WANT to actually ride a wheel that goes that fast?  There are lots of REALLY fast things that very few people think are safe enough to actually try.

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To me this lineup from KS looks logical and offers three diverse devices! But then you want a lower compact Msuper 3 type shell on KS18 instead of the tall one that goes up to the knees for much better stability and has integrated seat.. 840Wh big heavy battery on KS14D instead of compact and lightweight.. 25 km/h top speed on KS18 instead of 40 km/h which is still bicycle speed.. Are you guys sure? Because to me it seems it would result in the whole lineup being pretty much the same, then they could just offer the KS16 as the only option, as it will cover all those above mentioned needs, no?

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1 hour ago, UKJ said:

I STRONGLY think that 25 kph is plenty fast for general use, maybe even to fast?

That is exactly how I see it as well. As illustrated in a previous thread (link below), 20km/h is like jumping from 1.6m height whereas 25km/h is like jumping from 2.5m height, and it's usually not jumping feet forward in case of an EUC.

 

 

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42 minutes ago, nomad said:

then they could just offer the KS16 as the only option, as it will cover all those above mentioned needs, no?

Possibly, which means they could put much more development effort into a single eventually much more awesome wheel. I am happy that I don't need to make their business decisions though.

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4 hours ago, UKJ said:

<snip>

I STRONGLY think that 25 kph is plenty fast for general use, maybe even to fast?

UKJ

 

25 kph is certainly too slow for me. I'm not into extreme speeds, but I regularly ride 25 - 30 kph. If 25 was the top end I'd rarely ride the wheel.

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6 hours ago, UKJ said:

I STRONGLY think that 25 kph is plenty fast for general use, maybe even to fast?

I'm riding my current KS16 often between 25 and 30 km/h on a long cruise, and I don't view me as a racer.

But I will still replace my KS16 for the new KS16S next year, for 2 reasons: the stronger motor with more torque, and the larger battery (my current is the 640 Wh version, and I confess, if I would already have the 820 Wh version, I would not upgrade).  But the KS16S is a great opportunity for me to combine the larger battery with the other advantages.

I'm quite sure I'll drive the new wheel also with 35 km/h sometimes, if it is as reliable as the current KS16.

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1 hour ago, Chris Westland said:

Correct me if my math is wrong, but 70kg appears seriously suicidal overkill to me …


70km/h = 63504(m/s)^2

 

70 km/hr = 70*1000 m/3600 s = 19.45m/s.

So the kinetic energy for a 70kg guy is = 1/2*mv^2 < 0.5*70*20^2 = 14000 J.

It is not energy, rather it is the pressure breaks a bone. For example, you can scratch a bone for a long time so that the total energy spent is large. But, because the energy is applied over a long duration, the bone will be fine. But, if you use a cleaver with very sharp edge, then it does not take much energy to break the bone because the sharp edge make the pressure huge even though you only used a little force.

 

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When some laws and regulations are in place, maybe already next year in Europe with PLEV I think, it will require a registration plate and a drivers licence for any faster wheels. If you don't want that then just get a slower wheel as usual.. I'm thinking about getting the 16S myself so the top speed of the KS18 is none of my business, unless I get that wheel then it is my business but none of yours hah! I just wonder if any of the current manufacturers will be able to comply with the safety standards for making legal faster wheels, or will they only sell low speed models to Europe while other manufacturers take over the high end?

https://en.wikipedia.org/wiki/Footspeed#Limits_of_speed

https://en.m.wikipedia.org/wiki/Moped#Individual_countries_regions

BTW how many bones can I break with a Lightning LS-218 ?!

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On the other hand, it would be fun to overtake a Porsche on the highway with an EUC at 130 mph (~200 km/h), waving friendly. :D:ph34r::D

Edited by HermanTheGerman
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Would be an interesting question how far one could realistically spec out something like the Ryno in principle. So far it goes 10 miles per hour.

 

 

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3 hours ago, Mono said:

Would be an interesting question how far one could realistically spec out something like the Ryno in principle. So far it goes 10 miles per hour.

 

 

I notice a lot of clone/wannabes for the Ryno on Aliexpress, etc.  I haven't ridden one, but I'm wondering if the sitting position really is better than standing (the Ryno is certainly less portable than an EUC)

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45 minutes ago, Chris Westland said:

I notice a lot of clone/wannabes for the Ryno on Aliexpress, etc.  I haven't ridden one, but I'm wondering if the sitting position really is better than standing (the Ryno is certainly less portable than an EUC)

What do you mean by better? 

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