https://www.proteanelectric.com/ http://in-wheel.com/en/solutions-2/direct-drive-in-wheel-motors/ https://www.nissan-global.com/EN/TECHNOLOGY/OVERVIEW/in_wheel_motor.html Just move the rotor to the wheels, and turn the wheelhubs into the stator? And instead of ball bearings or air bearings or whatever, have magnetic bearings that use the electromagnets already there. No more drivetrain at all. Perfect turns on a dime, in place even.
Hello, fellow physics people I have a question regarding the mathematics behind how a magnet will slow down as it falls through a copper pipe. I am aware of the mechanism in which this works, the falling magnet results in a changing magnetic flux which induces eddy currents in the copper pipe which creates an opposing magnetic field. However, I am not exactly sure how Maxwell's equations can be used to show the relationship between the speed of the falling magnet and the magnitude of the opposing magnetic field.
Similarly, I was wondering if it is possible to set the experiment up slightly differently and get the same result. Imagine if instead of a copper pipe we have a copper shaft and a donut-shaped magnet. If we insert the shaft through the hole in the magnet and drop the magnet will the magnet's motions be slowed down? if so can we write down equations to describe this system?
I really would appreciate any help with setting up the equations or even a setting up of how the free body diagrams might differ in these two situations!
Hey guys! I got a delta 8 cart about a week ago and have been getting baked af recently. However, my cart has a threaded connection while my battery (airis tick) has a magnet connection. Problem is, my last cart which had the magnetic connection i had to throw away as i was getting searched. Therefore, i dont have it to put on the new cart, which only has the thread bearing. To cope with this, i push the cart down into the pen as far as it will go and take a hit... problem with that is that i think its causing it to overheat because its leaving a burnt taste and producing too much smoke, ans that smoke is alot harsher than it should be on my lungs. I have my battery on the lowest power but it doesnt seem like it is since im pusshing it down. Anyways, any solutions to this? The burnt taste and harshness on my lungs makes me not wanna use it anymore but i still love being high so idk what to do. And i cant get a new pen for another 2 weeks.
We are looking to replace our old oil-bearing chillers with fancy new magnetic bearing chillers. My question is, how much additional electricity will the average magnetic bearing draw for a 125 ton chiller? Will the magnetic field effect our power factor? The facility doesn't have a dedicated electrical guy, we pay a consultant to do our electrical.
I know we'll have an extra few kW availible on the feeder because of increased chiller efficiency, but I dont know if the mag bearing electrical draw is included in the kw/TON rating. Any advice would be greatly appreciated.
For all those who just came for the TL;DR
there exists no circumstance when you should take Magnetic Bearings over Lighter Barrel assembly
(but if you take variable chamber pressure that's still fine)
Now, for those more interested in the details. First off, the minigun has a base spinup time 0-f 0.7s and spindown time of 3s, and here's what's available for the minigun at tier 4:
- Lighter Barrel Assembly Start killing things sooner with a shorter spinup time (-0.4s spinup time)
- Magnetic Bearings Barrels keep spinning for a longer time after firing, keeping the gun stable for longer. +3s spindown time
- (And there's also variable chamber pressure, but that's not relevant for this post)
When it came to upgrading the minigun the first time I saw these two options I was a bit confused because:
- Faster spin-up time is more general, it applies even firing from a "cold start"
- But faster spin-up time also has a larger bonus (133% advantage vs 100% advantage)
I thought this ought to be the other other way around, withe the more generalizable spin-up-time upgrade having a smaller bonus than the spin-down bonus that only helps if you fire again shortly after having been shooting. Nonetheless, I asked around on the discord and it was suggested to me that the minigun spin up and down might behave in some not-so-linear way that makes my naive assessment wrong. That said I was still concerned so I went into a mission with each combination* and then did a frame-by-frame analysis (which took forever)
The horizontal axis is time since the trigger was released, and the vertical axis is the time it took to spin-up once the trigger was pressed. Lower values are better.
The upper chart is my empirical observations, compared to the lower chart which is my theoretical assumptions. They appear to line up nicely (there are some more data-points that got cut off for Magnetic Bearings at 0.7 spin-up).
Looking at the chart you can see that while both offer improvement over the base minigun there is also no competition as to which is better, no matter the time-frame lighter barrel assembly results in less time to firing than the magnetic bearings. Weather you are in the re-firing in the spin-down time or not a lighter barrel assembly will get you killing glyphids faster.
So, it looks like this upgrade is useless. How could it be made useful? Perhaps increasing it's value, the following chart shows what th
... keep reading on reddit ➡
I'm rebuilding a steering stem in an old Honda. I decided against switching to tapered bearings since I had all supplies on hand to rebuild as stock. I pulled out my magnetic tray and dumped in some shiny new "440 stainless" ball bearings I'd ordered online a while back. They didn't stick to the magnet and it stopped me in my tracks. The old bearings I took out very much stuck to the magnet. I'd expected the new bearings to do the same.
Anyone here know whether this could mean the steel alloy of the bearings were misrepresented? Or is it possible they are what they say and just don't stick?
It's making me rethink going to the tapered roller bearings, that's for sure.
As I tend to do, I'm looking for ways to min-max my various builds. I've unlocked all of the upgrades for the starting weapons on each class now and am finalizing three builds for each.
My final build for the Gunner's Lead Storm is primarily focused on accuracy, so I obviously used the accuracy upgrade for Tier 1. I'm curious about the Tier 4 options, though. Lighter Barrel Assembly primarily reduces the spinup time before firing, and Magnetic Bearings allows the barrel to remain spinning longer between volleys. These seem fairly straightforward, and I currently have LBA selected on my Blowthrough + Hot Bullets build (my favorite setup).
However, I'm curious as to whether either of these also affect accuracy in some way, since the Lead Storm becomes more accurate during sustained fire. Does reduced spinup time also reduce the time it takes to gain maximum accuracy while firing? Does longer spindown time increase how long you remain at max accuracy after you stop firing, or reduce the rate at which accuracy degrades? Or is accuracy gain/loss completely unaffected with either option?
Would love to see if anyone has tested these weapon mods in relation to accuracy, or if any of the devs might know.
