Why does the board have to lock up @ max speed?

  • You guys are not taking about the same thing, I have hit a bump, had the back of the board bottom out, and I was able to rebalance. What we are talking about is... Flying along at top speed at a constant rate not accelerating... And then without warning, like getting side swiped by a bus your face is in the pavement about 10 feet in front of the board. There is NO opportunity to correct anything. It's the equivilient of what you could imagine driving into a 1 foot high concrete wall at top speed would be like, but, with no warning. :)

    And, there was a comment that made sense, above, the board may not be locking up at all, the engine may just simply be cutting out, if the board is dying and there is no self balancing happening, the forward momentum of the board would carry you into a face plant.... So, that is clearly what is happening.. Because it would make no sense to design a lock up. So what is happening is if you push past the pushback, the board dies and your momentum carries you forward the board nosedives immediately, just basic physics there, it feels like someone hit the breaks, but that's the self balancing gone bye bye..

    By Joe I think we got it. :)

  • One aspect I'll bring up is that I don't think the board should be able to completely seize when the sensor pads experience a disengagement of pressure while moving. I think the board should remain active and provide a gradual deceleration of the device rather than the complete stop of the wheel rotation on pad disengagement while in motion. When I turn on the board, and don't have pressure on the foot pad, the wheel is very hard to turn, but I can imagine that accidentally having a foot slip off and have the boards wheel stop immediately can't do the rider any good. Maybe there is a way to have the board decelerate slowly for a given time period until while remaining the balance assistance or at least until pressure is put back on the sensor. Then again, this idea would have to only be put into effect while riding above a certain speed because if it was active all the time, it would be very difficult to get on the board and begin riding from a stand still.

  • @T-CAT When the board is moving you actually have to lose contact with one of the sensors for quite a few seconds before it cuts out. (edit: by "quite a few" I mean 3 or 4.)

  • That is true, but the boards wheel still immediately stops instead of gradually decelerating and balancing. This can be a safety concern if the both pads were to fail (or the associated electronics), or someone's foot is off the pads for just a tad too long, as the rider would go flying superman style. A gradual deceleration while providing balancing assistance would likely be the safest bet, along with having slightly wider foot pad sensors. Having four sensor pads (especially two strips of the ones on there now), but positioned horizontally instead of vertically may work. So, take the blue area now with the sensor pad (two) and lay that horizontal on the top portion of the wood plank, and another strip (of two) and place that on the bottom part of the wood foot plank. :)

  • I wish the sensors could be angled. Like the bindings on a snowboard. Riding goofy and turning right is slightly awkward.
    I think they designed it this way for ease of dismount. I peel my foot and sometimes start drifting back and then remount it and just jump off with both feet anyway most times.

  • @wheeler really? I find it a breeze turning right while riding goofy

  • @wheeler good call on the idea of an angled sensor pad. I always think that too. I ride very duck footed. I guess they would have to angle them backwards for me because I'm goofy foot though.

  • has anyone else noticed that it can freewheel? my wife and I have both disengaged the sensors a bit too early when coming to a stop and had the board freewheel out from under us and bam, right on our backs. we have both only made that mistake once! also I want to add to the conversation that I have accelerated too fast and went through pushback twice and just ran it out and once I think that I broke contact by squirming my foot around and I got launched with no possibility of running it out so I think that the responses are different.

  • The only thing that makes logical sense is they gotta be working on the lock up problem, but its something with the hardware like a cut-off of some kind with the DC motor that's supplied by others and thus can't just be tweaked with a few lines of code. It really seems to be the main thing holding these boards back from mass acceptance and unequivocal endorsement by current riders, I suspect its only a matter of time before we see a motor upgrade that definitively resolves this issue.

  • I noticed mine cutting out when I attempted to go over a curb a couple times. I was going too slow so the back of the board hit the curb as I was going off the curb but my feet didn't come off the sensor so I'm confused why It cut out.

  • @SeaP90d said in Why does the board have to lock up @ max speed?:

    The only thing that makes logical sense is they gotta be working on the lock up problem, but its something with the hardware like a cut-off of some kind with the DC motor that's supplied by others and thus can't just be tweaked with a few lines of code. It really seems to be the main thing holding these boards back from mass acceptance and unequivocal endorsement by current riders, I suspect its only a matter of time before we see a motor upgrade that definitively resolves this issue.

    I agree only lunatics and adrenaline junkies (like myself) may sign off on riding a board that mysteriously cuts out and leaves an uncontrollable wide open window for major injury or death beyond the already inherent dangers that exist. It would be alot more comforting knowing that as long as I don't do A,B or C I won't have to deal with an unexpected cut out.

  • Ok the devil is in the details, I had a similar fall exactly as you explained and this is the cause and solution below.

    You said "I had to lean forward to regain my balance, and in doing so, quickly pegged the speed on the OW causing it to stop and send me tumbling forward."

    So what happened was you pushed through the push back breaking the top speed of 12mph you will notice the nose is elevated near this point... once this happens the nose of the board will change behavior as you move past the push back point.

    The change in behavior is that the nose will start dipping as you increase speed towards 15 mph and beyond. What happened was your weight was on the nose while it was elevated near 12 mph... then you made it past the push back still with your weight on the nose combined with "beyond push back nose dip" instantly made you nose dive your board in less than a second. Its not a cut out, its a crash.

    This happened to me exactly two times and has never happened again because I expect it at high speeds. I still notice the slight nose dip tho.

    The solution is wait for the nose dip and and shift your weight off of it as you push past the push back point. You can go even faster, the board's nose will dip a little but you compensate for it.

    Like i said that exact thing happened to me, i know exactly what youre talking about. Its the nose dip after the push back phase. Watch where your weight is during that phase.

    Like I said, i really ride this thing as hard as i can several times a day. Its not a lock-up or a cut out... its a crash.

  • @Seekwence
    Were you in extreme or classic?

  • @wheeler extreme

  • @Seekwence I think you hit the nail on the head. The only times the motor has cut out on me suddenly were when I angled my foot too far off a sensor. Since I figured out how not to do that, all of my endos have been caused by digging in the front end either through turning too aggressively or accelerating beyond the limit. The OneWheel does have a mechanism for cutting off power to the motor gradually, it's the extreme push back into tail slide you get when it's time to charge or when you're over-volting it on a downhill.

  • @bmtka The way people react to pushback is actually what @Seekwence was describing. Pushback is actually caused by the board accelerating -- which shifts your weight back on the board -- so that when it does start to slowly decelerate, you don't go flying off the front via insta-nosedive.

    He's saying that if you try to lean forward to get the nose down while pushback is happening, what happens is you actually speed up, then nosedive and crash. What you should do is just sit tight and wait for the board to auto-decelerate and level out on its own.

    It is possible to push through pushback if you're daring, but it takes experience and knowing how to level the board without putting too much weight on the front.

  • @thegreck Ohhhhh...... That.

    One thing about OW is that it gives you way too much confidence in the beginning, but it takes many weeks to actually learn all of the important nuances and quirks and how to deal with them as your riding skill develops. I spent a lot of time in the yard learning and testing its limits on a friendly crash surface. Not fighting that quick acceleration pushback was checked off the list pretty early.

    I really think @Future-Motion should consider including a little physics tutorial about how the device works to keep the rider upright and the limitations of this mechanism as optional supplemental reading material.

  • @bmtka Agree 1,000%.

  • @bmtka I completely agree as well.

  • @bmtka Well, it might help, and certainly wouldn't hurt.

    I had my nose dive a week into it. It seemed like OW locked on me and I kissed the ground.
    After all, I had gone up that hill several times, why now?
    Until I analyzed things.

    It was the only time I wore high Timberland boots. (dumb move)
    I had experienced pushback earlier and remembered what I read here about launches after pushbacks.
    So I played it safe and slowed down. Come that hill, out of no where, I find myself diving into pavement in split second. It's like you never know what hit you.
    Luckily I was going slow, but still no fun dive.

    Pushback doesn't only happen at high speed.
    It can happen at mid speed and slow speed.
    It's OW's way of telling you you're doing something wrong.
    When you don't fix it, it launches you.

    It's all about maintaining that center of gravity and that takes time to learn.

    That's why it's best for newbs to really take their time with the learning curve.

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