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Yeah this really only focuses specifically on the motor and the inverter that drives it. Realistically, the fact it's part of a train is almost irrelevant but not quite because there is traction control

Excellent

The 450 was alright because it doesn't really need to be clear, we all know the spiel from the 350.

I'm not sure. The maintenance staff at Leeds don't have technical manuals that chart them, and the line speed isn't to high either

It always sounds clear because it's a requirement of inductor recordings to literally get as close to the stator or inverter legs as possible.

There's quite a lot that can go wrong EMI-wise, actually. It's not easy to get clear recordings all the time because the dense field diameter of transmission can extend to hundreds of metres at such a high voltage that linkage is inescapable regardless of spherical position. Some cars mount multiple power electronics and chokes in-plane with stator leads and windings like this ACU. In scenarios like this, especially where the bodyshell is formed of aluminium, post-processing is inevitable and may be excessive. All of this is just for people who are genuinely interested in VVVF to count pulses as clearly and quickly as they do (A, 21, 15, 11, 7, 5, 3, 1) for review. The only thing that could genuinely never go wrong is wrapping low-Henry coils point-blank around the stator leads, or having a datasheet with a frequency graph / pulse chart as there are different modulation and clocking methods. Even within SHE, there are different types.

Yes

Yep very bizzare sounding. Also yep this means he sat near the drivers end where the BREL 465 joined onto the met cam

That's true, but it didn't matter which motor I chose because I'm using a 1H coil. It picks up flux from trains from hundreds of meters away. So regardless, you still would detect the other 465s clearly. Simple science.

@@ItsYa165 100s of meters..tf!! Crazy science if you ask me . But at the same time tbh I can hear 465 BRELs like 1 mile away from my house when they are at speed.

@@ItsYa165 also ......given the nature of inductor coils...I'd love to hear the 465 BRELs ...if you have any recordings 😬💁🏾‍♂️ that recording must sound wacky at first.

Completely disagree

If you go to the motor bogie, you can hear the RCFM, you can hear the gearbox, and you can hear the sync modes even if it's faintly. You can also hear them clearly from outside the train as well so...

@@ItsYa165 I agree to an extent. But what I mean is it's very faint by Comparison to other trains. But personally I'm not really a fan of the elusive sounds ..the gearbox is very faint imo. As the gear ratio seems to be some small gear ratio that goes to a high frequency and out of hearing range really early on. Just not satisfying to me personally tbh. Class 730s seem to be a louder both in and out of the train but at higher speeds they become non existent in sound. Probably due to some variances in the gear ratio/insulation but idk. Yeah hence why aventras aren't my cuppa tea sound wise. I actually have a video of the 720s above the motor bogies in the motor carriage

@@ItsYa165 tbh on talent 2s the RCFM sounds better in combination with the more lively sounding traction overall. So I don't mind RCFM in that context. It's also slightly deeper than the 720s carrier frequency. And the sync modes sound WAY better from a talent 2 or "3" But again that's my opinion.

@@gapthemind--mindthegap8524 I guess you've never been on a 345 which is literally the same pulse modes as the Talent 2...

I actually disrespect these trains now and want to avoid Kiepe powered trains

@@ItsYa165 I guess it makes up for it with nice audiable gearbox harmonics :^). They almost imitate the sync mode frequencies somewhat. Lol. But I get what you mean , its rather dull.

@@gapthemind--mindthegap8524 there gearbox doesn't make up for anything. I don't care if it's suspended, there's no sync so the 455 can just go away.

@@ItsYa165 lmao I mean the noise sounds rather similar to sync frequencies. But just more mechanical and it doesent randomly change audiability like an actual module would do. But its just deep sounding like a sync mode sound is what I mean. But I get what you mean also, it's not the same as actually having those changes in sound or frequency patterns etc. Just overall ambiance and function seem boring by comparison. I do love the 321 gearbox harmonics though for this very reason.

Good, the 455s suck.

Similar but not the same. Ebara Express has inductor recordings of both on YT, please watch

The 1995 stock is objectively more efficient as I've explained in the description

Yes it's the same on the 466

⁠Yep

The traction sound on the Victoria Line 2009 Stock sounds absolutely incredible.

I've already done it. Just watch the 390 it's the same

The stock I've done is 1995, 1996, 09, S. There's no reason to do DC motors for obvious reasons. Why would you want an inductor recordings of something that has no inverter???

Yeah that's right, and the same inverter

⁠Indeed.

Discovering the true boredom of the Kiepe KITs has left me never wanting to step foot on the Class 455 again

No idea, but it won't be hard to work them out - this is so clearly rendered that it essentially looks like a manufacturer's pulse chart from a technical manual.

I made the mistake of not putting the waveform gain up so you can see it in the video but oh well

@@ItsYa165 no bother

I think this might be 300Hz, 17P, 13P, 11P, 9P, 7P, 5P, 3P, 1P but I'm not too sure... I have found it hard to focus on where half-waves start and end. Hopefully someone else can come and double-count.

Not particularly. Non of these videos are in any way related to TSW.

That's exactly what I counted too!

I've counted it four times now and yeah, I think this is about right.

These are synchronous pulse modes. It's just to uphold the torque of the motor as the electrical frequency increases.

I'm sorry, you will have to do independent study.

These videos are targeted at people who have a baseline understanding of this topic and are curious about different trains from around the UK.

Because they both use Onix 800 with 2400Hz PCFM... that's why. They're the same traction

@@ItsYa165 ohhh makes sense

They're alright trains, yeah

Indeed.

Nobody likes those Fainsa seats on the /6, /7, or 387

Irl

They offered to I think

They're all the same

Maybe, but none of that matters in the electromagnetic spectrum

Not sure about that one

I don't need to do all of those because half of them are identical

⁠Ah I see. Thanks for letting me know. 😊

It has a very low CPWM frequency so it tracks

Except not the 345 because that's 550Hz RCFM which might imply the use of more 15P

True.

That's correct.

😁

Certainly

The Class 387 is the Class 377/8

@@ItsYa165 if it was then they would have labled it as that

@@SouthernRex www.liebherr.com/en-gb/n/liebherr-to-supply-hvac-systems-for-electrostar-class-377/8-trains-23334-4715716

@@SouthernRex They did label as that, and it was changed to 387...

I see

Even with all the noise, this train is powering on with all its might just to reach the line speed. Sync occurs at very high speed compared with most trains in the world, some ~110km/h

Im sure sync occurs nearer 50mph with desiros. Weird that​@@ItsYa165

@@gapthemind--mindthegap8524 it's around 65mph

@@gapthemind--mindthegap8524 the line speed of Reading - Waterloo is 70mph and we basically just scraped 70mph when sync was clocked

ruclips.net/video/0JSxwhmDQf4/видео.html

There's never a scenario where it DOESN'T happen. Third rail is simply the worst electrification system in the UK.

@@ItsYa165 can imagine🤣not sure why they don't at least adapt it to be better gradually. Or change it gradually if possible.

@@bb-3653 How? How could you possibly change this system to be better? There's nothing you can do without replacing the rails and the shoe gear. The issue is that the rail has no insulation from the air above it and that current collector is a surface-to-surface sliding contact where the contact area changes dynamically because of the truck kinematic constantly changing both the cartesian and spherical systems of reference frame for the shoe gear. That means the shoe is essentially doomed. The pantograph is a much more advanced system because it's suspended and its job is to maintain tangential contact rather than surface-to-surface. This is easier because the pantograph and the wire can be considered as tied to each other despite vertical translation in the moving frame because it's a tension system.

@@ItsYa165 yeah that's why I was making it the point because are there step by step goals that can be done to replace them with ohle? Cuz idk.

@@bb-3653 It would be too eggspensive

Trainsimcommunity.com

@@ItsYa165 Thanks! By which category can I find it?

@@Trix-J you do not need further help

This mode is good

@@ItsYa165 it does sound alot better than DC carrier From the start, but sync mode frequencies irl sound terrible compared to other trains but that's my opinion anyways. Seimens propulsion sounds much better abroad to me desiro HC are a dream example 😁

@@bb-3653 The Desiros in the UK have basically always reused the traction package from the 360s because they were compliant enough already. In the future, Desiros will be different. Siemens' 24TS for instance uses 750Hz for rotor position estimation. After then, it clocks 1450Hz for 590VDC and 790VDC like the Class 350 did when it was commissioned on 750VDC... but instead of PCFM it uses RCFM for driving up to 35km/h on 590V and 42.5km/h on 790V before various sync modes kick in. The TIC of the 24TS is studied from the TCU of the Cl450 and is designed to reach 105km/h top speed. So in the future, the Desiro Verve should also be using RCFM instead of PCFM.

@@ItsYa165 wow you basically are the first person to tell me about a new desiro I just checked out a PDF of it online. Let's hope the overall ambiance sounds Interesting, like how the 24 tube stocks already seems to sound better than a desiro city and not boring like older desiro models similar to how german desiros sound pretty nice , all things considered like sync frequencies and gearbox sounds. Uk desiros pretty boring imo always have been since the CAF/seimens 333/332 trains. But the 24 ts sounds surprisingly nice from the limited footage ive seen. Mireo and desiro HC are a favourite atm for me in summary

@@bb-3653 That's good because Desiro Verve UK is in fact a Mireo case study of the Desiro UK just in general... the PDF really isn't accurate to anything - it's all just artwork and marketing. It says it follows on from the success of the Desiro City, which is technologically true. The Verve will be using the SF7500 bogie which is the instalment after the SF7000 used only by the Desiro City. Electrically, it'll use whatever Erlangen has developed.

One day, I will go into London and just get everything

I can look into it