Building a front wing from Aerospace Carbon Fiber scrap actually worked!
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- Опубликовано: 26 сен 2024
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Quote "we are stopping EVERYTHING to get the 12 Rotor running" 😂😂
Hear me out tho 😂 when you get a track day it’s hard to say no. But it’s been all 12 rotor before and after. I’m just addicted to 3 rotor
@@RobDahm the 3rotor is also my favourite 😍
Well, quadruple your addiction.
Ok ok I get it but I really wanna see the 12 rotor fly on the track.
It’s the same way cosworth tested the Valkyrie engine started with 3 and then just stacked it up 😂😂
Sorry this is a bit long: Rob, you need to find a way to make smooth tops to the front winglets. The box section is causing massive drag, breaking the airflow over the top so the air cannot properly rejoin the air underneath. You are right that a majority of downforce ia made from the bottom of an inverted wing (as used on cars) but the top surface is import to total downforce and drag. Next, regarding your Garmin Catalyst, I know you have it mounted so the camera sees it and its an important part of your on track video production. I work as a driving coach in the Midwest and work with engineering minded drivers like yourself who have a tough time shutting off the engineer side of their mind and just driving. However I'm fairly confident in saying you are driving to your data on both your Haltech dash and the green/red on your Catalyst. I use my Catalyst on all clients as its a wonderful tool but too much data can be a huge distraction. If I may I'd suggest changing the Haltech dash so it shows you the Tach/RPM only and rely 100% on the warnings you've set in the ECU/Dash. Trust in your work, your guys work and in the systems you've put in place to protect your engine. You can still download all the data and geek out after sessions as you do now. Place the Catalyst on the dash to the right, still in camera view but out of your direct line of sight. Make it so if you want to see it you have to turn your head, same as how you set your outside mirrors. The camera will still pick it up but you won't. It also gets the hanging wires out of frame which have to be a distraction in shifting and their movement to your eye. Doing these details with another driver I work with transformed his driving in a matter of a few sessions and he found not just lap time buy it freed his mind for better race craft and more of it.
agreed!
He's so hot though right?
Love all your points! Funny enough I never look at the garmin while driving. It does work well for videos but it was in the way of my line of sight many times. It was nice for the video to see how much time I was shaving before I slid off the track. I do want to get a longer aux cord so I can listen to its instruction. But I haven’t done enough laps to hear it help yet haha. I do plan on shaving the top side of the carbon pieces. It was a fun quick experiment but completely agree with air separation. I also just want gear rpm and MPH. Mostly just mph haha. It’s the metric i use for judging the entry speeds of turns and the long sweepers
Hey where in the Midwest are you a driving coach?
The 3rotor is getting more and more crazy
Dude was cutting seconds in the delta by the moment WTF
Dialing it in...
I bet the 3-rotor is capable of a 1:50 with a pro driver and a clear track. It's astonishing how much faster you are at wide open throttle than everyone else. It's also cool to see your driving skills gradually improving with each track day 👍
100 percent agree. I feel confident that if I got more time I would have been a 1:58-1:57 for sure. But getting that 2:00 for my first time ever at the track was a major accomplishment for me. Other rotary track guys are running 1:52 and 1:54 so there’s a lot to gain. I’ll be back for sure! Might ask Billy Johnson to drive it now and see what a record holder can do in the car now that it’s so much more reliable.
@@RobDahm It would be crazy to see what a pro could do in your cars, not to mention the priceless learning potential for you!
at WOT it looks like the car try to go in to warp drive.
would be fun to see rob pasing more cars down the straight then let of and coast behind some of them.
It’s mad that in Dustin Williams latest video he did a 1:58 in a stock BMW M2. Not belittling the 3 rotor but it’s crazy to me that a purpose-built stripped out race car that’s taken years to build and probably over $100k is still slower than an entry level BMW sports car on street tyres
"an entry level BMW sports car on street tyres" had full develpment from motorsport teams in every way imaginable by modern standards. rob is one man shop with a masters degree in fake-it-till-you-make-it.
The MFR number on the carbon part is a vendor number linked to Composites Horizons Inc. They make parts for Boeing and general dynamics. Those might be f-16 subsonic inlet baffles, just a guess.
oh god I hope bro isnt screwed bc they showed they MFR #
The CIA would like to know your location lol
I thought those were for civilian tourist submersibles lol
I was going to say the Same thing. I’m an aircraft mechanic and that was a big no no on showing the MFR # haha 😂
Also the SN was the worst lol
9:25 rob dahm never fails to disappoint 💀
Quite the birthday
another Rob Dahm ending 💀
12:03 *tons of smoke billowing up inside the car*
Rob: blows on it like a birthday candle
😂😂😂😂
I love when a dahm video comes out ! . Is Isaiah out? I saw a post looking for a reliable fabricstor . Or is he just on vacation
I was wondering the same thing
You know Rob i cooking something up in the shop when uploads aren´t as frequent :D
Is Isaiah still around? Missing from videos lately and you posted about needing a fabricator.
I'm thinking the same thing.
was just thinking the same thing :(
Rob, back when I was tracking an FD we ran very high spring rates. 1000f/650r. I know you might think that crazy, but watching your car from outside, I think it might be worth you looking into it. My car was a full cage track car. 2500lb wet, full slicks on 18x10 technomagnesios. Appreciate your content. Happy new year.
What do you track now
@@AdmissionGaming I'm old (75) and stopped race/track cars about 10 years ago.
BTW, Rob... my shock setup was Penske which were custom valved for those spring rates. I ran a GTC nose with an added 3" aluminum splitter and aluminum vortex generators in front of each front wheel opening similar to what you are doing. In the rear I ran the aluminum strut GTC Mazda wing BUT made extended struts to raise the wing 3". All of that worked great as the car kept a stable ride height on most tracks. I ran Mont Tremblant, Mosport, Watkins Glen, Summit Point, VIR, Sebring, Texas World Speedway (RIP), Motorsports Ranch, Barber Motorsports Park, and more with this setup. I guess what I am saying, look into higher spring rates and you will find benefits.
I just love the moment at 12:00 minutes, Rob all excited about his time meanwhile there is a small bush fire in the trans tunnel. Great job guys, I love this stuff!
2:56 "You angle it too far, depending on the situation, it's like ehhhhh f*ck that!" -Rob Dahm's Fundamentals of Aerodynamics
Pretty sick development there, Rob! Can't wait to see the 3 rotor next breakthrough on track
Love how Ethan nodding of approval and satisfaction at 9:55 LOL
You can always tape some tufts of yarn on the bottom surface of the wing to see if it separates (you find plenty of videos online as examples). You can point a gopro at the tufts while driving the car around to check the flow behaviour on straights, during braking (where the angle of attack increases), or during cornering (where one side will see less flow). Then again, it's not perfect as the yarn itself can upset the boundary layer, but if the flow separates with the yarn, then maybe the winglet is already operating too close to stall to be functional in a wide range of inflow conditions.
Yes mate I've seen cars being designed built ect in wind tunnels with yarn stuck various places on the car more so the front of the said car.
Absolutely loved every second seeing Rob hooning round the track.Found myself leaning round the corners with him..2.001 needs to be on tshirts hats hoodies etc etc.Think Mr Dahm can call this a total win 💯💯💯🔥🔥🔥
I know you've gotten some feedback for your driving Rob but HUGE shout out for sticking to it & facing the challenge especially considering what an absolute BEAST that car is. I used to criticize David Mazzei for not piloting his FD. You're an inspiration to many of us in your relentless pursuit of your passion. Wishing you an amazing New Year to you, Erica, & the boys. LFGOOO!!!!!
14:38 OMG I was watching that green timer and literally said "Get it, Rob! Get it!" Then oh nooooo. That would have been one hell of an improved lap.
Bernoullis principle! You Nailed the aero! congratulations on the 2.00.18, I just ordered my shirts!
I love how the Closed Captions say [MUSIC] when Rob is on the track and its just rotary noises! yes indeed music to the ears!
Honestly I am so happy that you are doing the videos (and living the life) actually using the cars. I remember at one point I thought it just might be engineer, wrench, dyno, engineer, wrench, dyno, and so on. Cars are for using. I'm also super glad you are doing track driving as well as drag stuff, as Mazda's belong on the track!
Great stuff and you have soooo much time left in the bank on this track! Have a great 2024 to all the team. Go Rotary power!
2:00 = LEGIT!!!!! Good driving Rob 👍👍
Did you fire Isiah again?
Again? New fan here, what's the issue with Isiah?
Unsure if he quit or was fired a few years ago maybe rob just couldn't afford him at the time but he came on to weld for a bit then went missing for a good few months, but i think i may have heard him behind the cam at one point on this video actually just didnt see him in video. Just stirring the pot lol. @@mecabe5137
He is just inconsistent and dosent come in as often as he needs to. Rob needs consistent help with fabrication,@@rangeyou99
I'm now caught up with all your videos and I've loved every single one of them and I'm excited to see what's next keep up the great work rob.
Never end this project. Just make it crazier. Forever.
Casually chilling after pulling a 2:07 and the smoke billowed like a mf. 😅
Oh he def risked his career... As someone who worked in logistics for an Aerospace company earlier this year... The part number, serial number, manufacturer number can easily be seen. & identified. Their dumpster also probably has 24/7 camera surveillance as well.
I get wanting to steal stuff out of the dumpster when it comes to aerospace because of the sheer amount of waste. But there are wayyy too many issues that arise when it comes to allocation of parts & what needs to be destroyed that there is no way in hell I would've grabbed that. Dude probably broke regulations that he had no idea about.
Was just about to say this. Just a quick google search shows the company etc. I was even able to find a picture of an employee holding what looks to be that exact part or something very similar.
Hearing Rob explain turbulence in a digestible way is to satisfying❤
What an insane car! I love watching you enjoy it to the fullest. Those shifts are amazing. Haha
Also, shoutout to Erica for all the hard work with the swag shipments recently!
Need way more track day content! Love watching your progression in every session!
All tho I enjoy watching all of your content you need to send these builds to the moon the same way you built it is how you should drive it. Stop being so nice to the car bro! You’re more than capable of the repairs go balls out and send itttttt
It is very helpful to remember Bernoulli's principle. High-pressure, low speed. Low pressure, High speed. It is the most simple way to imagine downforce. The convex side of a wing (be it one that generates lift or downforce) is the one that generates the most downforce/lift. The convex side accelerates the air creating a highspeed low pressure zone (Because the air is forced to travel a longer distance compared to the surrounding air). The low pressure "sucking" the wing up/down creating lift/downforce. :)
Something you should consider for front downforce is creating a convex surface under the splitter. The convex surface will enhance the acceleration of air creating a low pressure zone under the front splitter and sucking the front of the car to the ground.
Also please wear gloves and cover all skin when working with carbon, nasty stuf. The tiny carbon particles can be absorbed through the skin.
Enjoy watching you build your car chasing minimal improvements but those improvements all leading up to bigger picture
New Rob Dahm video, must be awesome. Definitely happy I watched it. You're getting pretty good as a driver too for pushing that car this quick, great work!!!😊
This is my favorite youtube creator and absolutely my most favorite car on youtube. Yeah mclaren sennas or huracans are sweet but the 3 rotor is so amazing to me. The sound reminds me of my yamaha 700 triple cylinder snowmobile that scream is something engrained in my bones.
I absolutely love the raw racing content. My heart skipped a beat when you left the track on that turn
Little DnB to keep the vibes high. Nice work man!
Nice one guys. Enjoy the effort you put in with the music. Steps the videos up a notch. Do you have a sizing guide for your clothing?
This man is a true insperation period. Thank you sir 👏
Engine sounds so smooth
Love your work Rob! Keep that speed up in those corners and keep ripping!!!!!
@Rob dahm in the left corner pasing over to the right @20.26 stick just a hair longer and drop slight speed in the left before transitoning over to the right to not pinching the righ corner and need to scrub speed where you should start to gain speed.
Oh yeah it's got a sub 2 min lap in it for sure! Awesome job buddy the front canards or whatever worked great
I can just imagine flatfoot shifting with paddles on a sequential would be mind blowing 🥸🤯🤐
10:36 that that 200mph rated tape? 😆
That was amazing hats off congrats 👍👍👍👍👍
Time to find a way to add force sensors to the different aero pieces so you can log and adjust angles to optimize downforce? 😁
Got laser height sensors installed and shock length sensors coming. I’ll make a video specifically on this front wing at 50 100 and 150 mph and see what happens when it’s on/off estimate the force it adds based on the shock load
@@RobDahm In the off chance you or anyone there reads this comment: Might be worth getting yourself a magnehelic gauge- Theyre gauges used to measure pressure differences between 2 points.
I mean Im sure wed all love to play in a wind tunnel, but a magnehelic gauge lets you actually measure, accurately, the pressure differences on your aerodynamic bits. Youll be able to measure the upper, and then lower pressures on these devices, and see if theyre making a difference, and if theyre making a difference in the way(s) you want them to.
These have been used by grassroots guys for awhile (infact grassroots motors has an older article on how to use them even) to make some pretty good educated guesses about the changes theyre making. Worth looking into maybe?
@@SidewaysGts There is also a RUclips channel named Julian Edgar that tests aerodynamic devices and other car modifications on the road. He also uses magnehelic gauges and laser ride height sensors for aero testing. It's pretty interesting stuff.
If you had less traffic and mechanical issues I think you could have worked your way to a 1.76 watch out for shallow entries thay will cost you a lot of time and work on staying a bit wider on sweeping corners to raise you avaridge mph . You are doing really well man keep at it iam impressed that your progression as a driver is matching your you mechanical technical understanding. Cheers
smoke pooring outta the car in the background and Rob just talking to the camera like nothing is wrong, lol
For first time seems really good.
3:02 you have reasonable correlation between air and water (with a proportional advantage to air on account of its lesser mass). So if you go to a sink, and do some math, you can put the water dripping on that wing and figure out what the max angle of attack can be based on water dripping and "giving up" on that wing. Probably would be easier to try it with smoke and a DIY cardboard box wind tunnel tho.
I love the 3 rotor, but we need more action in the 4 rotor. I want to see the beast in action again.
Great to see Rob coming back to Cardboard Assisted Design!
Looking Good.
Burning that midnight oil i see
As far as heat dissipation from the engine bay, would you recommend venting from the radiator area to allow air to escape or near the manifolds/turbo side of things (rear mounted turbo) where heat is generated the most
On the Indycar they actually have tubes to direct air to things they want to vent more. Like the alternator. Wild. But yeah you and I are on the same page. Assuming it could be vented that far back, getting the air to pass over the down pipe and external heat shielding would be good.
So good to see you driving aggressively now, to the point where you're countersteering and catching the car as it slides! 😍
She’s getting quick!
I love that you are taking us on this ride with you. I remember when I started doing things to my car and said that exact phrase "this feels illegal but it's not" 😂. I think your new front aero is a big step in the right direction for sure! I think you need to trim off that framing though. Keep at it, can't wait for the next one!
Figured we could always cut more off haha. What a measurable difference in the balance of the car! Still got a lot to do before this season but it’s so wild feeling the car come together so I can push it further. Will be a fun year! Definitely going to the pre Midwest fest track day
@@RobDahm Hell yeah dude! Aero is wild. It's unreal how silly things can totally transform the car. You have enough power to try silly things that might create a lot of drag and you get away with it. Yes, HP can actually help you handle LOL. Super stoked to see you at the early Gingerman event. Let's link up and see what we can do about getting you dialed in. Maybe we can go over some data.
Thanks for the explanation at the ending. I could hear a change in the boost and could see the instability in the braking and was wondering what all had changed. I figured You had decided to go with a extremely low power setup so that you could get into the power early in the turns. It didn't sound like you were making hardly any boost at all😅
dude i was the white s2000 at 10:50 !!! it was so awesome hearing your car pass by me that day
Hell fricken yeah! Keep kicking ass Rob, you've got my support 🤘🤘
Have you thought about putting small blocks of derlin under the lip, at least at the front so that when it scrubs, it has a slick hard plastic to keep it from digging into the road?
I KNEW you were gonna hook up with Andrew Brilliant in AUS. That's the one missing piece from your cars. Everything else is top notch. Way to go Rob!!
Omg thank you !! I knew you would be able to use the parts.
My backseat 2ct: It looks like you're generally early on the brake but often late to rotate on corner entry and to accelerate at the apex. But that's of course me judging from a weird camera angle and listening to the audio of a laggy big-turbsky enging.
Looking good, Rob. Glad you're having fun with a proper 3-donut track toy.
Hell yea to Andrew Brilliant with the fastest road racing 2g DSM Spyder !!!!!
The 3 rotor is a car that just keeps giving
So good to see your progress as a driver and the cars evolution. Keep it up, Rob!
Your a life saver man
thank you Rob for my package!
By looking at other areo setups, i feel like the side plates should be pointing straight ahead. You said the Wings create 2/3 of the downforce form the air going underneath, expanding an creating low pressure areas. In the video it looks like you taped down the front so no air can flow underneath. The area behind the Wing and sideplate is now like the back of a semitruck, where the air flows over and around an has to flow back to fill the "void". correct me if im wrong.
this is getting more and more crazy, considering a lot of the things you do is theory first and trial and error, the end results are often very impressive!
Tyson needs to take you out in one of his boats, it would definitely get you excited about skater
It’s been 12 days and no 12 rotor content. My disappointment is immeasurable and my month is ruined. Dropping everything to bring more 12 rotor, now watch me build this splitter 🤣love you rob
The time in the sim paid of mate, your driving has improved leaps and bounds!!!
I love how Rob in the pitstop is totally like "Yeah I know, my car is smoking like hell - it's totally fine!" 😂😂😁😁😂😂
great vid, glad to see more track days and you getting more seat time in the 3 rotor, I would add some plastic on top of your splitter wing where it transitions up to make it as smooth (on top) as possible, seems like there are 2 "ridges" there in the carbon part. Good that the bottom is smooth but you are adding some drag and turbulence to the top of the splitter wing reducing some of the effect. Also what is smoking inside the cabin??? you probably don't want to be breathing that in for long periods of time, we want to keep you around mate!
well done.
Where's Isiah???
Looks like he met a nice girl and is spending most of his days with her now.
got a girl, directing his time elsewhere
12:08
Rob: I feel very confident in this car now
Car: *smoking in the background*
😳😂🥲
It's cool that you can see the body roll by watching the interior "stabilized" camera. Looks like she's a little "light" on the left side, more body roll.
Awesome to see the development of this car! Looks like you might need some shifter surround clips though, always funny to see it moving around as the track day progresses.
happy new year's rob dahm
Me and a friend tested out various downforce modifications to our cars. I went with front splitter flat bottom and rear diffuser. He went with a big wing. Made all mine out if wood. We spent around the same money overall. My lap times improved my 14seconds. His was 2 seconds
I believe the class he is building for does not allow for a full flat floor
@@PointBlank65 insane because a well setup flat floor with skirts etc is so much grippier front and back
Yeah it’s a bummer. I will put the stockish panels back on and reduce the exhaust profile. But yeah no flat bottom
Every time I m watching your videos feel in me an engineer car like you.bcause you so explicit in🤜🤛
When the air says "fuck that" and just starts swirling. I hate it when that happens.
Love it Rob, the 3 motor is gonna be even more crazier
Needs to run 2nd gear longer through turns, keep RPM and maintainance speed through turns! Then smash it when there is an
opening. Needs much much more
practice. Drive it like a high reving sport bike! Saddens me when caught off surprise! Love the content!!! Getting there!!! ❤😊
Rob! Let me send you my Vortex Blades for the back of this beast! Put them on and see your time improve dramatically! Made from aluminum and powder coated black!
Gloves look mint
Were it my wing, i'd make it such that at the mounting points (or at the very least on the same axis with the mounting points) aluminium bosses would be "glassed" in the wing's structure, recessed along with a small pocket where a strip of teflon could be added. Either as a slip in and using a bolt to secure the edge or with a sacrificial bolt (could be a nylon bolt that threads in the teflon as well as the boss). That way, every time it wears down, you can replace these pads which would eat it instead of the CF. If you make them out of teflon strip, then the cost would be only for the bosses, "glassing" and the operation of cutting and drilling of the strip. The pocket could be an oblong affair into the CF, so it only digs its "toe" in, for support. Jm2c.
Merry Christmas Robert
The best ASMR channel on RUclips
Love seeing her improve
Looks like so much fun!
Hell yeah! 2:00, that was looking fast 🥳
That loose gauge on the dash would drive me nuts! Easily get your 1:59 by just tightening that up
Just like in engines, air doesn't like to be turned more than 15 degrees. All sharp edges create vortices, pressure side curls towards the suction side. You want a lot of succ.
Man this looks like so much fun and so satisfying. You're doing fuckin awesome, man. I miss tack days like this so much. Good times.
Usually your directing air with the lowest canard and air causes a force because it has to change direction but middle or high ones will work like a wing.