Here's a valuable correction from @jacklemon8689 - he found some rare photos of Georg Plasa's BMW 134 Judd V8 exhaust th-cam.com/video/BPau-dlWLqc/w-d-xo.html Contrary to my statement in the video, the 134 Judd BMW doesn't use an 8-in-1 header, but rather a Y-pipe to merge both banks together. This added inflection point promotes the high-pitched sound. Technically, the exhaust starts with 8 pipes and ends in 1, but this isn't what I had in mind when I read '8-in-1 exhaust' on the official website. Thanks to @jacklemon8689 for finding that, and thanks to everyone else for watching!
hopefully this could shine a light on path towards your goals, there is also an ancient forum post of 40+ pages where most of an engine is custom built. th-cam.com/video/YczDqbvfwx8/w-d-xo.html
I’m sure you know / are aware of this for the V12 drift car project, but I’ll put it here anyhow…..if you treat it like 2-inline 6’s that merge together to a single pipe, you can get more inflection points if you use a 6-3-1 header design over a 6-2-1 (and each merge collector if sized correctly can act as a “step” in area, without the header having any steps)……additionally, this places the pluses w/360-deg. separation from bank to bank when looking at each merge branch, so there could be a slight low-end performance advantage if the camshafts have a lot of overlap……there’s some good info on this by ConeEngineering, BurnsStainless, & the SpeedTalk forum by a member named Calvin Elston {aka: Exhausted}). Keep up the good work!!!
If you remove comments like on the other vids, you will only hurt your channel in the long run. You can never get rid of idiots, you need to learn to ignore them. Besides that I really like the videos, I’m looking forward to more of them!
"No Officer, it's stock. Actually, it weighs a little more than stock". As a former audio technician and a hifi/loudspeaker enthusiast, I was going to commit the sin of commenting before watching with a big spiel about how it sounds better because the density of the material greatly reduces internal resonances along the length of the exhaust tract, which means that more of the energy in the exhaust gas is being contributed to the exhaust note instead of being wasted as heat, and the tone is much more dependent on path length/shape rather than resonance tuning... but you very neatly summed that up in the first minute. Cool video!
First, it was cow hoof repairs, then watch repairs, then MRE testing, then hydraulic press crushing now exhaust manufacture Thanks and yes this is what yt is designed for 👏 🙏
Wow that sounds so good great work maisteer, how about a 6>3>1 header with 1-6, 2-5 and 3-4 pairing in theory having 3 360° twins merging into the Y-pipe instead of the usual 2 3 cylinder split would it have significant impact on the sound?
It would definitely add more inflection points and allow an area change at each merge like a step in the header (without needing any steps)....I personally think this would simplify fabrication / enhance packaging, and be the means to the end of what he's is trying to accomplish on the V12 drift car.....good-idea.
Well as somebody who has made some instruments out of PVC pipe, I can tell you that instruments made from PVC pipe sound unmistakably like PVC pipe. The material does affect the sound.
Very creative content. Even that shop set up is interesting as heck. Never seen garage doors like those. Seems like the kind of place you wish you could go, hang out and design and develop crazy stuff.
This video will forever be one of my favorites on YT. The science of sound. Can't wait to use this research one of these days when I've got the cash. Thanks a lot for your work.
I’m not sure which one had the stepped exhaust. The first video sounded best to me. @Maisteer when I was at Goodwood after watching your videos I looked more closely at the exhaust of the pagani huayra r. It actually doesn’t use steps, but many different merge collectors. I think it’s 12-4-2-1 with a pinch point just before the exit.
All this exhaust header stepping makes me wonder how a stepped inlet manifold affects performance and sound. Still pressure waves present in the inlet as you've mentioned in previous videos.
The tape was ideal for me, I can see where tape holds it's value by the "reel" enthusiasts out there. (Sorry for the pun) But I did like to see vinyl holding its own and also having a different listening experience which is why I decided to start collecting vinyl 👌 This was an amazing video, thank you! ❤
You've got me imagining a Trombone-exhaust that is automated to change lengths depending on RPM to get the perfect sound all the time.... if only I had Money I'd do it myself! I have the knowledge and I know how I'd do it- Time is the true enemy! *Really great vid, I thought I was subbed- well, I am now ;)
having no musical background and some missunderstood physics ive finally had my AHH HA! I UNDERSTAND IT NOW! moment. all thanks to you. ill be spending the next year in the garage probably failing at putting this into a real life exhaust... thanks!!!
So we went from trumpet references to the exhaust trombone, and I'm only 6 minutes in. Since woodwind instruments use a special resonator in the mouthpiece - how long until that features in the exhaust demo :D
I'm on this journey with you to learn as much as I can about exhaust sound. One day maybe I can make the BMW K1600 I6 engine on my bike sound as it should. A 1600cc inline 6 with an 8500 rpm rev range should be able to sound really cool.
This project is your Ahab like quest for the white whale of supercar exhaust sound. I think I'm going to buy the extra videos because this is fascinating and must go on. I already dug out one of my SAE texts on manifold design and started watching sport bike exhaust sound videos to try to notice differences in design. The stepped or tapered pipes tend to have more of the sound you are looking for. Interestingly, all bike headers mispair the cylinders 1-2 and 3-4 which is different than the typical 180 degree pairing typically on 4 cylinders. I do notice a different sound quality on my 4 to 1 air cooled VW when it has a megaphone attached.
On a side note your thick accent sounds like you could be from near Thuringia. Yet there is often a hint of Swiss or Austrian. Very interesting. In Gera haben die immer so einen tollen Akzent.
interesting .. wondering if you could use coherent air pressure (like a laser ) from exhaust and modulate the separate pipes to tune it to its natural resonant harmonics. would need a sensor controlled malleable cavity, perhaps trombone style or values to other chambers? likely going to get something completely different and the back pressure will probably negate this.
It kind of sounds like the sampled and simulated audio that something like beamng might use or any racing game really that dynamically creates the revving sounds idle notes .etc. the concrete seems to isolate any errant resonance or rattles that accompany the acoustics of live vehicles just leaving its pure tone from its timing and pipe dimensions
Do you think adding a step up from 1-3/8" to 1-7/8" in the primaries shortly after leaving the head (6-10") and then another step up where the 1-7/8th slides into a 2" and then the 2" has a cone reduction back to 1-7/8th, would help that resonance increase and thus furthering the chase for the F1 sound?
Here on YT someone is working on a pretty detailed engine simulator and that includes exhaust system sound. I think 2D version has been completed and now 3D version is WIP. I wonder how it could be used by someone who actually has some idea about engine exhaust design.
Hey prof! Can you talk more about how to make inline 4 to have F1/ motorbike(YZF-R1) / LFA sound? I really love that kind of sound with 4A GE or 3S GE😍😍😍. The similar video of sound you can find from Larry Chen 4AGE Formula Atlantic page. It's a good reference.
Germany, the industrial engineering capital of europe where also bach and beethoven are from... yeah this guy knows what he is talking about when it comes to the art of beautiful engine sounds.
If you check any videos of the cars in pits, you can see that they also use stepped headers. Considering the high pitched nature and what Maisteer showed in this video, they all use some form of stepped 6-1. Quickly searching for pictures I couldn't find any that reveal the full system but then searching for BMW M1, it also reveals that the ones that produce high pitched "race" sound use stepped 6-1 headers (probably with some form of intermediaries as Maisteer has shown).
Here's a valuable correction from @jacklemon8689 - he found some rare photos of Georg Plasa's BMW 134 Judd V8 exhaust th-cam.com/video/BPau-dlWLqc/w-d-xo.html
Contrary to my statement in the video, the 134 Judd BMW doesn't use an 8-in-1 header, but rather a Y-pipe to merge both banks together. This added inflection point promotes the high-pitched sound. Technically, the exhaust starts with 8 pipes and ends in 1, but this isn't what I had in mind when I read '8-in-1 exhaust' on the official website. Thanks to @jacklemon8689 for finding that, and thanks to everyone else for watching!
hopefully this could shine a light on path towards your goals, there is also an ancient forum post of 40+ pages where most of an engine is custom built. th-cam.com/video/YczDqbvfwx8/w-d-xo.html
I’m sure you know / are aware of this for the V12 drift car project, but I’ll put it here anyhow…..if you treat it like 2-inline 6’s that merge together to a single pipe, you can get more inflection points if you use a 6-3-1 header design over a 6-2-1 (and each merge collector if sized correctly can act as a “step” in area, without the header having any steps)……additionally, this places the pluses w/360-deg. separation from bank to bank when looking at each merge branch, so there could be a slight low-end performance advantage if the camshafts have a lot of overlap……there’s some good info on this by ConeEngineering, BurnsStainless, & the SpeedTalk forum by a member named Calvin Elston {aka: Exhausted}).
Keep up the good work!!!
We crave the formula for the perfect header
Got that ancient Mesopotamia exhaust
This reads like a line from a dracula flow video
Or Mesoamerican pyramid exhaust on Pontiac Aztek.
LMAOOOOOOO
@@AlfonsoSosa-ii6tshe’s him
@@worawatli8952 🤣🤣🤣
That sounds a lot better than I expected. Those engine mounts are working overtime.
no replies? let me fix that ;)
It's a giant eco chamber of course it sounds pretty good.
@@jwalster9412 never thought of it like that
just the 6 into 1 sounds weirdly good, the tone of a pretty jz/rb esque sound but the raspyness of a straight pipe 1.4 civic
Im glad you turned back on the comments. I love these mad lad experiments and data. We all appreciate it. Thank you maisteer
The endless pursuit of making a BMW inline 6 sound good 😂
Just rely on your turbo to do the heavy lifting when it comes to sounding good. Lol
Tbh I like the sound of the M50/52
@@Clooger- naturally aspirated beast are also nice just raw engine sound
6 into 1 Merge downpipe
@@ExplizitDuester m20b25 says hi
The mad exhaust scientist is back
If you remove comments like on the other vids, you will only hurt your channel in the long run. You can never get rid of idiots, you need to learn to ignore them.
Besides that I really like the videos, I’m looking forward to more of them!
the people need their void to shout into
If you can make that bmw sound like F1, I think this channel would explode
"No Officer, it's stock. Actually, it weighs a little more than stock".
As a former audio technician and a hifi/loudspeaker enthusiast, I was going to commit the sin of commenting before watching with a big spiel about how it sounds better because the density of the material greatly reduces internal resonances along the length of the exhaust tract, which means that more of the energy in the exhaust gas is being contributed to the exhaust note instead of being wasted as heat, and the tone is much more dependent on path length/shape rather than resonance tuning... but you very neatly summed that up in the first minute. Cool video!
I was so excited when I saw this video pop up. I love your vids
+
How is this channel not bigger the effort going into making a nice sounding exhaust is class
This has definitely become one of the channels which taught me the most about exhaust sound, you are doing awesome work
Can you keep uploading I love the content.
This is so calmly chaotic
I love how it isn’t just a 10-second clip of the sound and the rest is 10 minutes of blabbering around in the garage
its not?
vroom blablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablablabla
@@kingo5940go watch any generic car vlogger to see what he's talking about. This whole video is about the topic in the title
First, it was cow hoof repairs, then watch repairs, then MRE testing, then hydraulic press crushing now exhaust manufacture
Thanks and yes this is what yt is designed for 👏 🙏
Nice content. Of course took a lot of time and effort. Excellent. Kinda like Garage 54 experiments.
Wow that sounds so good great work maisteer, how about a 6>3>1 header with 1-6, 2-5 and 3-4 pairing in theory having 3 360° twins merging into the Y-pipe instead of the usual 2 3 cylinder split would it have significant impact on the sound?
It would definitely add more inflection points and allow an area change at each merge like a step in the header (without needing any steps)....I personally think this would simplify fabrication / enhance packaging, and be the means to the end of what he's is trying to accomplish on the V12 drift car.....good-idea.
Most underrated channel on YT. Thank you for discovering the holy grail of exhaust sound.
The fact that you made a bad sounding BMW finally sound good has me really impressed with your work as usual , you've come a long way Maisteer
Well as somebody who has made some instruments out of PVC pipe, I can tell you that instruments made from PVC pipe sound unmistakably like PVC pipe. The material does affect the sound.
To be fair, theres a difference between making instruments out of PVC pipe, and making an actual instrument out of shaped PVC
You slept through the part where he said human mouths don't rev to +7,000rpms and create pressure enough to vibrate the material ITSELF.
@88boat as a matter of fact I didn't
@@Dudeface167 your lawyer begs to differ
@@AgalmicAutomata This
Very creative content. Even that shop set up is interesting as heck. Never seen garage doors like those. Seems like the kind of place you wish you could go, hang out and design and develop crazy stuff.
This video will forever be one of my favorites on YT. The science of sound. Can't wait to use this research one of these days when I've got the cash. Thanks a lot for your work.
Are you going to buy their videos on the 11 different models of this?
Surprised the mass of that concrete didn't bust the manifold off.
Nice work!
I’m not sure which one had the stepped exhaust. The first video sounded best to me. @Maisteer when I was at Goodwood after watching your videos I looked more closely at the exhaust of the pagani huayra r. It actually doesn’t use steps, but many different merge collectors. I think it’s 12-4-2-1 with a pinch point just before the exit.
This is genius. You should make an exhaust that bubbles up through water like a bong.
Glad someone like you exist on TH-cam
The internal combustion powered trombone cracked me up😂😂😂😂
this is criminal you only have 60k subs the content is amazing 😮
Bro built a concrete rice rocket. And I'm lovin it.
Wow you gave the car a chimney
The quality of these videos are unmatched!
Ancient Rome called, they want their plumbing back.
Your channel is filled with gold nuggets!
I'm impressed by your dedication to solving this physics problem. Or is it a musical problem? I think you're very close to finding the solution.
I have been waiting so long for an upload and hollly mollly Im happy he did.
6-2+Y sounded beautiful actually, wish the clip was longer
All this exhaust header stepping makes me wonder how a stepped inlet manifold affects performance and sound. Still pressure waves present in the inlet as you've mentioned in previous videos.
5:58 this by far is one of the best demonstrations I’ve seen on the internet in a while
God i love watching a random car video and seeing people frankenstein'ing an m50b25 motor
There are few offerings on the internet that offer a genuine boon for humanity and this isn't one of those. Well done.
Well done. I hope someone is already paying you for this research!! Loving the content
Very impressive research. One my viewers put me on to your channel and it gives me insight into why my Ferrari engine doesn't sound like a Ferrari.
and with an e36 no less, you are my savior
Underrated video!!!
I'm surprised no windshields were harmed in the making of this video 😅
exhaust manifold bolts, you da real mvp
1:15 choo choo here comes the train
Lmao
07:18 that's too real 😂🎉 breaking the youtube algorithm with this one
Fully sic !! Thank you for this video !!
Will you buy all 11 videos of this youtuber??
The tape was ideal for me, I can see where tape holds it's value by the "reel" enthusiasts out there. (Sorry for the pun) But I did like to see vinyl holding its own and also having a different listening experience which is why I decided to start collecting vinyl 👌
This was an amazing video, thank you! ❤
Thats one way to Brick a motor.
thank you for the concrete rabbit hole of exhaust shapes that i didn't know existed
I love your Videos man!
this feels similar to someone playing around with oscillators until the right combination of things makes it sound good. shape, resonance, ...
That is some concrete Stience!
Concrete evidence
You've got me imagining a Trombone-exhaust that is automated to change lengths depending on RPM to get the perfect sound all the time.... if only I had Money I'd do it myself! I have the knowledge and I know how I'd do it- Time is the true enemy!
*Really great vid, I thought I was subbed- well, I am now ;)
I would like to learn how to make a jelly trumpet... for research purposes
Yeahhh uhhh was wondering the same for science
The exhaust guy strikes again
Mate , first , greetings from oz ! And second , you are our boss 😂😂😂 we ABSOLUTELY LOVE THIS CHANNEL ❤
It was only a matter of time that such a video is recommended to me
The trumpet bit has already blown my mind entirely.
having no musical background and some missunderstood physics ive finally had my AHH HA! I UNDERSTAND IT NOW! moment. all thanks to you. ill be spending the next year in the garage probably failing at putting this into a real life exhaust... thanks!!!
So we went from trumpet references to the exhaust trombone, and I'm only 6 minutes in. Since woodwind instruments use a special resonator in the mouthpiece - how long until that features in the exhaust demo :D
I'm on this journey with you to learn as much as I can about exhaust sound. One day maybe I can make the BMW K1600 I6 engine on my bike sound as it should. A 1600cc inline 6 with an 8500 rpm rev range should be able to sound really cool.
Yes finally you made it
Your concrete lego exhaust is awesome. Subscribed!
I lowkey love the rally car sounding like an RC motor
Mad genius
Awesome experiments! love it
Plot twist: this guy's just auditioning for paganis exhaust division engineer.
This project is your Ahab like quest for the white whale of supercar exhaust sound. I think I'm going to buy the extra videos because this is fascinating and must go on. I already dug out one of my SAE texts on manifold design and started watching sport bike exhaust sound videos to try to notice differences in design. The stepped or tapered pipes tend to have more of the sound you are looking for. Interestingly, all bike headers mispair the cylinders 1-2 and 3-4 which is different than the typical 180 degree pairing typically on 4 cylinders. I do notice a different sound quality on my 4 to 1 air cooled VW when it has a megaphone attached.
Some truly concrete data👌
I think an eight into four into two into one would sound crazy!
very good content, shout out from brazil ❤
I love your passion ❤
"Had a Collector made of Stone-A"
(Adapted from the song "King-Tut - Disco-Tut" by Steve Martin - "Had a Condo made of Stone-A" )
The 6-into-2 sounds just like my f80 without cats 😂
On a side note your thick accent sounds like you could be from near Thuringia. Yet there is often a hint of Swiss or Austrian. Very interesting.
In Gera haben die immer so einen tollen Akzent.
This video is exhausting
interesting .. wondering if you could use coherent air pressure (like a laser ) from exhaust and modulate the separate pipes to tune it to its natural resonant harmonics. would need a sensor controlled malleable cavity, perhaps trombone style or values to other chambers? likely going to get something completely different and the back pressure will probably negate this.
Side quest: Can you made an unequal length header for an even firing inline 4 (180-180-180-180) to sound like a cross plane (180-90-180-270)
So that’s why my truck so loud! 🖤
Never thought I’d see a concrete exhaust on a vehicle, but here we are.
It kind of sounds like the sampled and simulated audio that something like beamng might use or any racing game really that dynamically creates the revving sounds idle notes .etc. the concrete seems to isolate any errant resonance or rattles that accompany the acoustics of live vehicles just leaving its pure tone from its timing and pipe dimensions
I think that's just the way the mic has recorded it
Do you think adding a step up from 1-3/8" to 1-7/8" in the primaries shortly after leaving the head (6-10") and then another step up where the 1-7/8th slides into a 2" and then the 2" has a cone reduction back to 1-7/8th, would help that resonance increase and thus furthering the chase for the F1 sound?
Here on YT someone is working on a pretty detailed engine simulator and that includes exhaust system sound. I think 2D version has been completed and now 3D version is WIP. I wonder how it could be used by someone who actually has some idea about engine exhaust design.
Hey prof! Can you talk more about how to make inline 4 to have F1/ motorbike(YZF-R1) / LFA sound? I really love that kind of sound with 4A GE or 3S GE😍😍😍. The similar video of sound you can find from Larry Chen 4AGE Formula Atlantic page. It's a good reference.
the calendar with bikini girls at 5:30 😂
Now.. right now! I’ve seen it all:)
your neighbours must love you haha
8:33 there’s a superhot lady at the end of the headstock. My heart travels at 300ft/sec.
Germany, the industrial engineering capital of europe where also bach and beethoven are from... yeah this guy knows what he is talking about when it comes to the art of beautiful engine sounds.
Look at Maisteer exposing all of GINTANI's secrets. Even Yamaha would be jealous, blink.
Please check the sound of Argentinian Turismo Carretera, those are inline 6 that sound like v10s
If you check any videos of the cars in pits, you can see that they also use stepped headers. Considering the high pitched nature and what Maisteer showed in this video, they all use some form of stepped 6-1. Quickly searching for pictures I couldn't find any that reveal the full system but then searching for BMW M1, it also reveals that the ones that produce high pitched "race" sound use stepped 6-1 headers (probably with some form of intermediaries as Maisteer has shown).
@@ralfsz956-2-1, not sure if they're even or not
Reminds me of the distinct sound of itbs
3:59 Rest In Peace Georg PLASA…… We miss you…
Very cool 💪👊🤙
They make it sound like a rotary 😆
This man made an exhaust trombone 😂😂