Not to sound snarky, but isn’t the mach1 deck conducive?
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The suspension is isolated by bushings. Add that with the truck bushings and you got 4 sections isolated.
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They increased the bell diameter by .5mm Bioboards did that before they did though.
The noise, imo is due to heat related eddy currents. Static would build up on a dyno but i am skeptical of any disturbance it would create if you were actually moving along
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What are you on about
Was meant for Mach One owners:
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Pardon my Californianess but not exactly sure what that means. Not on about cuz.
Anyways is that not the change that was made?
I was surprised that Reacher had not updated their listed sizes. My heat extractors fit 63mm motors so to find they have 64mm but say they are 63mm made me think they were hiding something they thought was valuable.
Thanks for sharing.
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So just a wireman here, not an EE, but it sounds like this only becomes an issue when transitioning between different riding surfaces. This can allow the front truck to discharge stored static electricity before the back truck / wheels touch said new surface, creating a difference in potential between the two trucks causing the static to potentially discharge through the front trucks via the electronics before the back truck/ wheels can come in contact with the new riding surface.
Could be way off, it’s been a long day in the sun but that’s what I’m getting from the video.
If this is really a problem for people with electronics in the front of their board, couldn’t a simple and dirt cheap solution be to run a bonding jumper between the two hangers so they’re always at the same potential? Might not be pretty but neither are the dudes I ride with.
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Apparently there’s a bridge in Washington DC that has caused this enough times to be considered repeatable.
I will bring a multimeter with me next time and take a video of the screen as I ride over the bridge next time I’m in the area. Or maybe @MacKeeper28/@AdityaAurora can do it?
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Yes you understand correctly. And yes an ground wire between the two trucks should be an easy way to prevent it. But proper ESD protection is ideal as a ground lead attached to moving parts may become damaged and stop being effective without the rider realising.
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What do you mean “the change”? We developed the whole motor over several years, hundreds of hours of R&D and making changes. Reacher doesn’t use 64mm diameter even though we do on our site because they prefer marketing over facts.
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Yeah hangers are always moving and subject to major vibration. To be fair though a PCB could fail too. It just seems like sometimes engineers fix a problem by engineering more points of failure. At least you have a chance of seeing a broken bonding jumper.
I believe New York has a bridge like that too.
I’m not sure you’ll learn much with a multimeter. Static charge is such low current and high voltage that it may dissipate through the meter before you can read it. Its worth a try though. We used static charge measurement devices.
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Well the motor controller is also a PCB, so if we can’t trust that then why bother at all haha. The Mach One is fairly complicated electrically, but aside from this static charge issue the electronics have always been super solid thankfully. I prefer to rely on a PCB than a flimsy wire on a moving part.
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I’ll see if I can get my hands on one
For sure and I saw this response coming, but I have had PCBs fail countless times. No idea how many escs have been destroyed over the years. I do think it’s cool that you’re recognizing a potential problem and providing a solution though. There could be some kind of notification if that PCB does fail so the rider could know to replace it.
Thems fighting words🤣
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In my experience so far, all electronics failures I’ve ever had could be pinpointed to an exact cause.
I wouldn’t be surprised if some or many vesc failures are from static charge.
How often does the ECU in your car need replacing? How often do Tesla inverters fail? Aren’t Tesla’s the lowest maintenance car of them all?
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How often does the ECU in your car need replacing?
I don’t think it ever has but everything is at the same potential in a vehicle. Either way, there absolutely could be electronic failures in vehicles that could get someone killed. Same with these way more fun modes of transportation we’re into that aren’t just overpriced couches on wheels. The bonding jumper was just to make sure I understood the issue correctly but as a wireman and not an EE, I have no choice but to pick the flimsy wire over the PCP any day 
.
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Haha fair enough.
Yes everything fails, although cars are produced in the millions whereas electric skateboards have a remarkably high failure rate considering the far smaller sample size, and I attribute this to hobby engineering and that most eskate brands treat them as toys.
Cars have ESD protection standards to prevent such failures.
My mission has always been to bring eskate out of the hobby realm and produce something closer to automotive standard to significantly lower the risk of injury and we’re getting there! Ironed out nearly all of the gremlins over the last 5 years. RTS unfortunately introduced a new elusive one, but in a way I’m glad it allowed us to discover the static charge phenomenon and add protection for that. Just wish we figured that one out a little earlier😅
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Awesome, hopefully everyone on this forum is working towards that same goal in their own way. You don’t have to learn lessons the hard way like I did!
Can’t imagine if I had someone teach me how to mountain board and DIY (could still use a mountain board sensei).
DIY eskate only dies if the experienced builders lose their passion and quit helping the new builders.
If someone taught me at the beginning it would have saved me so much money and stuffing around… I remember being frustrated at the lack of support at the very beginning.
Although we used to DIY because it was often better than buying a pre-built. But now production boards are getting so good and some of them insane value, more reliable etc that it’s becoming harder and harder to justify DIY, as you might end up with a more expensive less reliable and less capable machine than just buying something.
I think it makes the most sense for open class racing to DIY still, so if racing gets bigger so will DIY in that way, but the only way I see racing getting bigger is with stock class racing, which again eliminates DIY 
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