meepmeepmayer

The pedal dipping I know: it dips while turning, and when you go straight it levels out again. Is yours different?

As said above, guys: pedal dipping when turning to one side (but not when turning to the other) might be because you lean the wheel sideways more when turning to the dipping side. Test it. That's valuable info

Less range, yes. In the middle between 18XL and 1600Wh Gotways. According to KS via @US69, the 16X goes down to 3.15V per cell (3.0V on 18XL and 3.3V on Gotways). That's the info on the 16X battery behavior. The 16X will probably still throttle at 25% with this big battery. I'm guessing - has anybody tested when the speed reductions start? Just "25%" means something different here. It corresponds to the same charge state as ~34% on the 18XL (and 14% on Gotways).

The working theory is that the sensor is thrown off and does no longer reliably tell what is level when the wheel is tilted too much to the side. So that is what causes the dipping (= pedals not level) in turns, because in turns the wheel is tilted to the side. The fact that the dipping only happens when turning to one side is probably due to the specific calibration you did, together with a susceptible sensor. If it is anything you do, it is because you tilt the wheel sideways further when turning right than you tilt it when turning left. You can try and see if the dipping depends on how much you tilt the wheel in turns, maybe just by controlling the wheel with your hands instead of riding it. But in the end, ideally you just get a new board. Should be a warranty thing. At least ask. $2000+ is a lot, everything should be perfect then.

It will fit. But isn't it the same tire? The 16X doesn't empty the batteries as far as the 18XL does before it considers them to be at 0%. So that is to be expected.

You can still play around with different calibrations, maybe something changes. The sideways tilt is what counts for the calibration. Did you buy from ewheels? You could just ask for a new board.

Might be 80% of the motor top (no torque) speed or something like this. Strictly voltage dependent. @Chriull had a nice post where he did some math with these numbers, I can't find it.

In theory it's a balancing act between Higher top speed along with a bit of better efficiency at high voltage. Better acceleration at high current, which implies a low voltage. Range is the same (ignoring possible efficiency differences which seem to be small). In practice, I guess we'll find out. With the Nikola it just looks like the 100V can go faster and the rest is the same. So higher voltage is better? Not sure.

If we assume the 100V Nikola can do 65kph/40mph, that means an 80kph/50mph 126V Nikola Why are they even doing this? Who wants to ride that fast? I wonder what other reasons than speed made them do this. Interesting!

That's a really nice and quick reply by Kingsong. Thanks for the info! Does that mean KS stopped shipping the 16X, or the engineer just asked for it? Sounds like they have a (board change/hardware?) fix they are testing, and stopped shipping for now.

Sure, let's talk about motor minutia! @esaj @Chriull Does x% higher voltage mean x% higher top speed? If they use the same motor as in the 84V or 100V wheels, how fast will it go? You can predict that, right?

"Why are you always staying away from me all of a sudden?" "Why can't I find my glasses? Have you seen my glasses?" "Why can't I find my garage barn keys? Where are they? You can't always offer to get stuff for me, Dan honey! I wonder where I left my keys..."

Gotway knew from the beginning there would be a 100V Nikola. Still they decided to make it so only a 84V 60 cell pack would fit, but neither a 72 cell 100V pack or a 80 cell 84V pack. Despite the wheel having so much space inside, they could likely have made the battery space longer to accommodate these options (certainly the 72 cell). But they didn't I'm sure I whined about that somewhere. That's why I was so excited about the "sizes" of 126V batteries, they fit the same spaces as 84V batteries. (Side question: Ah = "capacity" and Wh = "size", right? Are there better words?)

Yes, but physically the wheels were designed for 60 cell packs. 3*20 works and 2*30 works exactly. Meanwhile, 2*24 has space left and 3*24 doesn't fit. Which is why the 100V wheels waste space = potential battery size = range. E.g. 1600Wh 84V MSX vs. 1230Wh 100V MSX or 2400Wh 84V Monster vs. 1845Wh 100V Monster. My point is, 126V is a more logical step coming from 84V because no space is lost and everything just "works the same". Unlike the 100V wheels. Even the 100V Nikola wastes space on the sides (just like the 100V MSX and 100V Monster), they were just lucky with their oversized design and managed to cram 1845Wh instead of 1230Wh into it. So "the sizes work" meant literal, physical size of the battery packs

If they use that same board in other wheels, they can have a 2400Wh 126V Monster. 1600Wh 126V MSX. All these sizes work just like 84V.

I credit Kingsong with finally forcing them to do that with the 18L speed and the 18XL/16X 1600Wh battery.

126V checks out as exactly 4.2V*30! (84V is 20*4.2V and 100.8V is 24*4.2V.) Also, the Nikola 84V battery packs are 60 cells each (3*20), but a 2*30 126V battery would also be 60 cells. It fits the designed battery space exactly! No capacity lost due to bad geometry! You could have a 1600Wh 126V Nikola or even a ~1940Wh 126V Nikola (30 extra cells on top - 60 won't fit). 2400Wh 126V Nikola. Now I'm really intrigued! Wow indeed!

In that case the after effects seem to be expected behavior... but certainly not what came before! (lasers ON sharks my friend!)

That's normal. When nearly but not quite level and standing still, the wheel will slowly crawl to level. My ACM does that, too. That seems to be a normal behavior of the balancing algorithm not reacting hard when it detects that the wheel isn't changing its tilt fast and therefore doesn't have to react quickly. Try your other wheels, they might do the same. As soon as you move the wheel then, it will instantly go to level. Unless it does NOT do that, this is normal. edit: Clarification, this is right after you switched it on but didn't move it yet, right? This would be the situation I'm referring to. Or did it tilt from level and then went back to level?

Different rider behavior I guess. Some people ride less "extreme" and may not entice that oscillation even if it might be lurking in the background. And maybe there are subtle differences between boards (gyro sensors) that somehow have an influence. Or is it the tire pressure? Rider weight? Not the first mysterious head scratcher in this world of EUCs.

You are aware of next weekend right? <- this is me, green with envy

Hi! Yep this is a bad calibration. It just shows more in soft mode apparently. You don't need to be super careful when calibrating. Leaning the wheel against a hard wall is enough. Just make sure it is tilted sideways as little as possible. The sideways tilt is what throws off the calibration. The pedal tilt can be as you like. In fact, I always recommend a crazy steep pedal calibration (like 45°) just to confirm your calibration method works. After that, you can calibrate again, this time to level pedals (or whatever you prefer). Also, keep the wheel still during the entire calibration, this may be one off/on cycle more than it looks. If your board/sensor stays stubborn, play around with the calibration process. Maybe one calibration with a crazy sideways tilt, and then the next one might be good. Etc. But usually one nice upright calibration should be enough to remove (or at least minimize) the pedal tilting in curves.

When will the firmware update that fixes the oscillation come out? What FW version is it? This needs to happen soon so people see if all those possibly-related pedal problems go away then.

Once the firmware and app fix are out, this will be a great wheel. EUCs have teething problems but always end up being awesome in the end. No worries

Awesome! Current Nikola confirmed to be as robust as expected! Which wheel would you say brakes better downhill - ACM or Nikola? Trying to get a feel for how it rides in comparison.