Jason McNeil Posted September 19, 2015 Share Posted September 19, 2015 Our first batch of King Song 800W 14" Wheels sold out within the first week of arrival, with almost all the buyers existing Wheel users looking to upgrade to something more powerful, responsive, & with a higher safety margin. In appearance, the only visible distinction between the original & this latest variant is they've fitted red covers around the LED lights, also, but less visibly, there is a serial number stamped on the hub motor. This Gen II build was delayed by about a month, mainly due to issues implementing a new integrated bluetooth module—still to be release—it will support a new version of the App that will be compatible with both Android & IOS. Some of the other improvements for our latest consignment are: Reduce the absolute low-voltage threshold from 55v to 50vImproved water proofing around the side-panelsInclude 4A fast chargers as standardSmoother ride, especially at top speedTilt-back implementation at 30kph (2kph faster than originals)Up-rated control-board supporting over 3,500W peak powerHow much benefit is there by reducing the low-voltage from 55v to 50v?By decreasing get-off-now voltage to 50v, the KS 680Wh/800W achieves an additional 34minutes of ~25kph of cruising time, or 14km range, which is a massive 25-30% improvement in range over the previous firmware. A proper range test will be conducted tomorrow morning. Note: for the gap between 56-60min, in another recording session there is another ten minutes of (slower) ride time, so works out to about the same...With the 4A charger, how much time does it take to charge from 0%-80%? The eLogger didn't capture the charge-current, but the voltage curve is fairly good indicator of the state-of-charge, at around the 120 minute it reaches 80%. Link to comment Share on other sites More sharing options...
SirGeraint Posted September 19, 2015 Share Posted September 19, 2015 Just curious what did they do to get the "Smoother ride, especially at top speed"? Link to comment Share on other sites More sharing options...
Cloud Posted September 19, 2015 Share Posted September 19, 2015 @Jason McNeil the covers around the lights on mine are red (see attached) and my top speed ride is pretty smooth but i am not sure that i have other upgrades, charging to full battery takes about 6 hours or even 6 and a half. Could you comment please and how i find out if i have other upgrades? I think i will finally buy the phone today and check the top speed.. Link to comment Share on other sites More sharing options...
Gimlet Posted September 19, 2015 Share Posted September 19, 2015 @Cloud if you've had your wheel for a while, as I believe you have then it's highly unlikely to be the latest that has only just been released. Link to comment Share on other sites More sharing options...
Cloud Posted September 20, 2015 Share Posted September 20, 2015 Yes, maybe a month and a half, its just the Jason mentioned that the new batch has this red plastic and i have it as opposed to other kingson ive seen received a week before mine that doesnt. My guess is they introduced different changes at slightly different times, perhaps they issued a few wheels in between with some changes but not all of them, Link to comment Share on other sites More sharing options...
MetricUSA Posted September 20, 2015 Share Posted September 20, 2015 Will the 18" get the same software upgrade? Increased range... Link to comment Share on other sites More sharing options...
Jason McNeil Posted September 20, 2015 Author Share Posted September 20, 2015 Jason mentioned that the new batch has this red plasticThe different colour covers are not indicative of the the exact type you have, probably, just what they happen to have stock of at the time... Link to comment Share on other sites More sharing options...
Fnape Posted September 20, 2015 Share Posted September 20, 2015 Does it concern 500W too or only 800W ? Link to comment Share on other sites More sharing options...
Jason McNeil Posted September 20, 2015 Author Share Posted September 20, 2015 Just curious what did they do to get the "Smoother ride, especially at top speed"?Correct, in the original, once you're >25kph there's some slight buffeting action from the motor, that becomes more pronounced towards the 28kph limit—caused by the back-emf. Somehow the engineers were able to improve the PWM timing sequence to smooth this out; it's still there, just more subtle. Link to comment Share on other sites More sharing options...
Cloud Posted September 21, 2015 Share Posted September 21, 2015 @Jason McNeil when will kingsong incorporate customizable speed warmings that you can set at your own speed or at least turn off? I dont understand why they havent done this yet Link to comment Share on other sites More sharing options...
Jason McNeil Posted September 21, 2015 Author Share Posted September 21, 2015 Yes, but this feature is only available on the Mark II boards. Link to comment Share on other sites More sharing options...
Cloud Posted September 21, 2015 Share Posted September 21, 2015 Oh, so this new batch will have this feature? And there is software support? This is great.. Link to comment Share on other sites More sharing options...
Jason McNeil Posted September 21, 2015 Author Share Posted September 21, 2015 Learned something new about how this extra speed limits will be implemented: King Song will be using an authorisation code system, where the owner requests a code to unlock the higher speed potential. I've got to say that in my limited limit testing of yesterday, even riding on a perfectly smooth surface, the rider really has to be extra vigilant, any slight irregularity on the roads surface, say a 3cm bump, is not pleasant at those speeds. IMO, I think the realistic max cruising speed on a 14" wheel is around 25-28kph, anything more is just for boasting rights, like a 'potential' of a sports car to achieve 200mph. Link to comment Share on other sites More sharing options...
MrBump Posted September 21, 2015 Share Posted September 21, 2015 ..any slight irregularity on the roads surface, say a 3cm bump, is not pleasant at those speeds.IMO, I think the realistic max cruising speed on a 14" wheel is around 25-28kph...A 3cm bump at 10km/h is a bit hairy on my TG T3, so I'd say they're not doing too badly. Link to comment Share on other sites More sharing options...
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