Making a Double Wish Bone Suspension - E55 ASL Part 6

Suspension Geometry Video: • Suspension Geometry - ...
E55 ASL Playlist: • Project E55 ASL (Actua...

[@alltheboost5363]

I've been an automotive tech for 17 years and I have never seen anybody explain suspension geometry so well. I would say in most modern automotive shops people do not understand Ackerman angle... scrub radius etc.

[@Spooly_]

Damn here I am struggling to install parts specifically designed for my car and you're out here designing and fabbing up basically an entire car. Amazing to watch your progress, can't wait to see it move!

[@filename3094]

Just designed and built my own caravan. So much trial and error with something much more basic than a race car. Not sure how you foresee and manage technical issues so comprehensively. Just awesome.

[@bindabbin6067]

Most dope brother! Cant wait to ride along with the rest of your build. Thanks for being so specific!

[@Conservator.]

Hi, could you tell us a bit about your education and maybe your job? I’m simply blown away by your video’s and just curious. It shows that you spend a lot of effort in both building the car and making the video’s. Thank you very much!

[@xfmotorsports]

Education is in electrical engineering, worked a few years in electrical aerospace also a bit in cars. Currently went back to school for a bit for software engineering, which gives me a bit of time on the side to work on this stuff

[@Conservator.]

SK8215 Hi, I would have guessed mechanical engineering :). Makes it even more impressive. Can’t wait to see the project develop and eventually see how the car performs. Oh yeah, I think you’re a great educator as well. Btw I also studied software engineering but that was a long time ago. All the best!

[@GBHeiser]

@@Conservator. You realize you don't need an education to do this stuff right?

[@joshm.7592]

@@GBHeiserYour saying.. that schooling/formal education isn't required to obtain similar knowledge. BUT An education is usually assumed when someone appears to have a deep understanding on many complex subjects, especially modern ones. Now include that the fact that the youtuber is relatively young and it's an easy assumption to make.

[@Conservator.]

Cullen Crisp Ok maybe not a formal education and many not at the academic level. On the other hand the way he explains things and how he weights pros and cons for design decisions shows that he’s on top of this and that his thinking is high level. The fun thing is that he combines it with a lot of practical skills AND makes excellent video’s of it.

[@Skully002]

This is a great series! It's really terrific to see people who are very knowledgeable sharing their knowledge and experience with other enthusiasts. Thank you so much!

[@MrSilentSavage]

Can't wait to see this beast come alive. Well done sir! Your technical prowess in very refreshing. Glad I stumbled upon your channel.

[@fernandoperalta2255]

Dude, this is awesome, I just started watching your suspension's theory videos and now I've seen the whole project you've done, it's really impressive and for sure that I have to do this at some point of my life. A dream man.

[@rebel1988us]

cant wait to see you design on the cantilever suspension. This is amazing! You are living my dream!

[@Cravenmooreheadism]

I feel honored to have watched your channel when it first started, what you doing now is what I i'm be doing.

[@TheGuysFly]

This is amazing content. I am glad I have stumbled upon your channel!

[@mirdus0001]

haven't heard so nice detailed info about geometry - plus that idea to demo it on the real half done axle, where ou can move it frealy, is really great. Thanks !

[@nickhahn3276]

Late to the party, but I wanted to say thanks for sharing this process, and all of the info in the other suspension videos. Awesome stuff, man.

[@horvath14041984]

Absolutely amazing videos. Your knowledge is impressive. The best video series I have seen on KZbin

[@usafirst965]

Taking the photos and making the calculations? Im TOTALLY Impressed. FANTASTIC Idea This is why race car builders contribute so much to the street car world Smart People making cars better and at the same time safer.

[@mgamga]

Project is looking Good, You take it to another level.Kudos.

[@HorsepowerIndustries]

awesome work man! I have nothing else but praise to you my man! keep it up!

[@davecourtois5142]

I'm really impress by all your knowledges and skills. I never see so much talent in the same person. Keep going my dear you'r the best!

[@jdxtube68]

Absolutely sensational videos! Wow! I love the way that you used the two photographs to determine steering requirements! I hope you make another car after this one! Maybe you and the Warranty (Tavarish) can do a collaboration or something! Thank you!

[@MaXpeedingRods]

It’s a great series of videos that are rarely seen on KZbin. I subscribed, bro.

[@stratos439]

I strongly recommend using the spacers for the rose joints you are using. I am not much of a racecar builder but i've seen my share of snapping the stems off of those when people hit curbs too hard.

[@reginaldmorton2162]

Masters degree in automotive engineering, this is something I always wanted. Thanks

[@zenpro8164]

you sir are a genius, been watching your buildup process and what a great project, your knowledge and skills are highly commendable, thanks for sharing (SUBSCRIBED) :)

[@gulammohiyuddin6123]

Amazing what you say what you explain its all amazing , never taught such things anywhere

[@two_number_nines]

A thing I've been thinking about recently is why not put the transmission on the rear axle? Maybe the easiest way to do it is to reuse fwd audi transmission with its integrated differential and then mod the cv joints to fit the suspension you need.

[@tysimon]

Can't wait to see it running !!!!!!!

[@R3mbo69]

Amazing! Keep going! Like we saying in my country - you have golden hands!

[@tadman3d]

Absolutely amazing

[@DEBOSSGARAGE]

Incredible video. Very well done. I don't recommend welding cast parts that could be catastrophic though.

[@xfmotorsports]

Thanks, yeh I know welding isn't the best idea. Would have preferred billet aluminum if I had the extra time, but judging by the low loads this thing will be under compared to its stock application, I think it will hold up fine

[@Avboden]

@@xfmotorsports that's not how it works, that's not how any of this works....welding a cast part can lead to catastrophic failure under even light loads.

[@mrbumcraic5046]

SK8215 You have seriously underestimated the loads generated in a race car, yes the vehicle is lighter than its donor parts car but racing will push all these to the limit I could not imagine the FIA allowing this onto a race track

[@southjerseysound7340]

@@Avboden while I'm not sure I'd weld them. They are forged and not cast,you can see the forging lines from being made.

[@TheHogart]

Yes, be very very careful with stressed welded Cast parts, especially in the steering with high speeds with high grip levels. Great project, and great learnings to be had..

[@Rhandahl]

hey, I was lucky enough to stumble upon this magnificent video serie, and would just like to say that this looks like a hell of an awesome build! Also, I reckon you could easily make oval tubes if you made yourself some dies and just rolled standard tubes between two dies of a greater diameter, until you reached the desired oval shape:P

[@erickrayos]

sub'd. Planning on making my own car as well in 3yrs time after I come back from Japan, thinking of using either s54, s65 or s85 motor (yeah.. BMW guy here). and it'll be mid engine is what I plan. was thinking of the same suspension set-up for the fronts as well as you. nice to see similar thing to what I am thinking about. probably will go to school w/ in this 3 yrs or so engineering to understand how things are designed even further.

[@Dumah2007]

22:14 ''if the car turns out to be front heavy'' Bold of you to assume that Ahaha XDD

[@Georgealfa21]

You're talented AF dude .I just subscribed.

[@RonaldFinger]

Absolutely amazing series. I'm really blown away by all of your work. You mentioned releasing a Part 3 of the suspension series, talking about trailing link setup and other styles, is that video still in the works? I'd love to see that too

[@SergejKolmogorov]

You are realy cool! I like your ideas to solve some tasks.

[@rogeronslow1498]

A metalurgist would have a heart attack seeing you cutting and welding forged steel suspension parts.

[@jackflash6377]

Threw a red flag for me and my first thought.. "I ain't driving that". I hope he had a good roll bar system.

[@nunosantiago2273]

A MIG welder is wrong for this He risks not getting enough penetration with the thickness of metal involved here.Unless he has a 400 amp welder which I doubt.Stick welding would have been much better.

[@ldnwholesale8552]

Yes, some of the angles are a little suss too. In realty fabricating an complete upright would be better. Or simply find a stub axle that is suitable. Toe out on turns makes a car turn better. Steering arm length usually governs that.

[@Shoopadawhoopa]

Yep, thought the same... Clearly not a mechanical engineer and no automotive engineer either. I wouldn't drive that car with the shown suspension design.

[@shadyfishr]

I know right! that weld boundary is going to be so brittle. he did even try to address the issue. Can he heat it back up and peen it then let it cool slowly in sand or something? i hope he is driving slow when it fails.

[@Lucas_Tutaev]

In Russia, all build on the UZ (toyota), but you realize my childhood dream! Way to go, man.

[@xozindustries7451]

It doesn't seem like there's very much suspension travel mounting the heim joints in that flat direction, if you turn them 90 degrees they won't go into bind if the suspension travels farther than you've designed it to.

[@berto6063]

I was thinking the same thing.

[@xozindustries7451]

biryanikebab I’d rather turn them and make it more suspension travel, I can’t see any reason not to

[@bgarra]

Thought the same thing

[@CyberneticKinesis]

Doesn’t seem he’s necessarily looking for 8-12” of travel. I’d bet he could probably have 3-6” of travel per corner and still end out with a great handling car if paired with a stiffer suspension setup. Essentially end up being a big aerodynamic go cart.

[@xozindustries7451]

Alex Vine ya, I get that, but in the start of the video it looks like it only travels 3-4 inches, and if you’ve ever seen the curbing in the corners of most tracks that will bottom out the Heim joints when you hit that curbing when used at the plane they are installed im

[@ap4931]

Another great vídeo, great content!

[@AmirPomen]

Awesome...watching this projects...makes me wanna ditch my mirage cyborg rally car and move into space frame track car project!

[@gafrers]

Wonderful progress. Excited for this build. Great to see a very competent person build and explain this beast.

[@steveligondo8237]

Damn you have everything figured out!

[@serbancordis3416]

Do you think the chassis twisting forces will have a detrimental effect on the engine? Leverage from the chassis end to the block can be quite high and the tolerances in the engine are quite low. Maybe extra bracing will be needed. Will have to see if it works..

[@MrHBSoftware]

At first i thought strange that you mounted the lower ball joint upside down but now i understand :) the lower arm will be the mount point for the damper/spring unlike most road cars were the shock and spring mount on top were your upper ball joint is. that way it will prevent the ball joint from separating itself because the weight of the car will push it downward (hope i made sense)... making the wishbones with thin tube was very smart because they will only take pushing and pulling forces, no twisting forces will be there so they only need to resist compression and pulling...very nice engineering there. but if you were to fit an ARB attached to middle of each wishbone like on most road cars the tubes would bend..that is how you optimize for weight saving and efficiency, very nice

[@ashteregg2133]

awsome best thing I've seen in long time

[@davidheath5693]

Great video really enjoyed the designing part with the use of the computer program is their a particular design program you used for finding the correct mounting points for the A-arms.thanks for any help and your time David.

[@srivenkat2811]

Been following this channel for a long time!!! Great vid!!!

[@tomwagemans1872]

Nice job for the suspension design. But welding cast parts is tricky. I hope you let the part cool down pretty slow (under a blanket or so)

[@MLFranklin]

Very cool project and video.

[@level5822]

Most underrated KZbin channel

[@kiesh81]

new favourite build series :) where did you learn all the design methodology!?

[@idriwzrd]

Excellent design work. Can you share what software was used for the geometry?

[@Happyh0b0]

Congrats on over 100k views on this video. An awesome view/sub ratio 4:1. Would like to make a car in the future and would probably use your design.

[@zane6158]

Good Job! And good project!

[@dwitcraft]

Impressive work on the spindles. Having done this, would it have been easier to fabricate spindles from scratch? Just wondering what your thoughts were. Thx

[@jaredbennett9568]

Should've put threaded joints on the outboard control arm mounts so you don't have to unbolt the inner joint when you want to adjust

[@xxxmikeyjock]

that would also allow adjustment without requiring the arm to deflect. the way he has the arms welded any length change requires the arm to deflect to create a new triangle

[@neo1zn]

My favourite build on KZbin! 👏🏼💥Your knowledge is just ridiculous. Thanks for the videos and keep them coming man👌🏻

[@av8shunmeckaneck]

Great job designing the suspension. Came across this cause I'm interested in makeing A-Arm suspension for a VW Thing. Welding on cast iron that is as structurally critical as this isn't a good idea. Making steel spindles from scratch would be much more accurate and more importantly much much much safer.

[@haydenseager]

When you talked about how the suspension geometry gives you anti-dive characteristics, how will that affect braking performance? Does it act like a damper?

[@hydorah]

Guess what? You helped my fix my '98 E55 Estate (or wagon) I had coolant mixing with my oil and was think I needed head gaskets or something, but it was the coolant passage o-rings in the timing cover! Engine saved and not too much work really. Thanks man! Love the vids. I watch every single one

[@aravindrnair8866]

I have a few questions that I hope you would reply: 1) How did you measure the angles while you assembled them? 2) How was the angle virtually determined with your track width? 3) How did you design the chassis based on weight distribution? 4) Is the M14 screw enough to hold the arms to the chassis and your front to middle portion chassis fixture? I'm probably going to go through all these process in making a Formula student car with a 390 cc engine probably and i'm pretty much new..

[@tedahn3539]

The chassis gets narrower towards the front so the suspension pick up points are not parallel to the front-rear line. I see this type of setup in many offroad cars. What does it do and how do you figure out the suspension geometry in 2D front plane please?

[@jakubsilhar1203]

Simply incredible, what program have you used to simulate lenghts angles and all of it. Or which would you suggest. Second thing, the lenght of whisbones is based of what factor?

[@adbcustoms2771]

Hey buddy what software did you use the build this car and do all the calculations and values

[@Carlicious-Parts]

Great. Thought about your project a few hours ago and hoped for a new episode! :D HERE IT IS :D

[@nuirueu]

I've seen Caterhams with more robust looking suspension.... And that big lump of an engine too. Good luck!

[@cstavro]

Normally you'd design the suspension first, then your frame. You've done it backwards, and you don't have good load paths (pick up points in the middle of a tube instead of at a node). You will also have issues with mounting push rods to those spindly lower control arms.

[@daos3300]

morbid curiosity keeps me here.

[@clementmajac-garagepassion41]

Hey, great work and great video. Love it ! What's your tube size for the A arms please ? :)

[@GarryMcGovern]

Watching your videos is like hypnosis - I'm completely entranced! Absolutely superb! :D

[@Shoopadawhoopa]

I wouldn't use regular screws for the wishbone mounting but proper bolts. Also your balljoints seem to have a tad too much play. They're perfect when you can barely move them by hand. Also expect them to wear out fast.

[@MIMCKMedia]

This video makes me think about what I can do to improve suspension geometry for my 350z. Then I realize that you can't change much unless than ride hight, camber and toe...

[@donovanhudson8661]

This is oh soooooooo awesome

[@IIIRotor]

Beautiful

[@ONJRmedia]

What software are you using for the suspension design?

[@drivejapan6293]

Fusion 360 is pretty popular and it can also simulate stresses. Pen, paper, and a calculator can do just as well though and in my opinion is itself much easier. Though if you are already proficient with any given cad software it can improve your efficiency.

[@navjitsingh4585]

Adams and lotus software is what he is using

[@splint3048]

What educational material can you recommend for learning how to design space frame chassis and suspension systems?

[@B5S4SCHA]

Wow! Why don’t you have more subs!? This is amazing

[@saruboys6062]

Do you use blender to do your animations?

[@allaboutengines5125]

hello, can you guide me how you calculated the geometry of steering mount on knuckle so that instantaneous centre will be same for all the 4 wheels while turning? thankyou anyways.

[@alfred7136]

Great video!

[@jeremeyparks3411]

23:00 ish. Do you know how much anti squat or dive you went with, by percentage?

[@autospeed]

Your videos are amazing man. I'm a huge car guy and diy guy myself, seriously impressive work! You should have a million subscribers!! Just wondering Which cad software are you using to model the car?

[@ec17pse]

how much compression and rebound you calculated on the wheels as you have no spacers in the rod ends so it limits the movement, did you consider this when working in the software?

[@sentindodavida]

i love this!!!

[@kayzrx8]

Best channels on KZbin

[@green95gt]

I was about to say about the valve cover solid engine mount idea...saw that myself on some old F3 cars i believe. Be careful however as these engines were not designed to be stressed members...especially if the block is aluminum. I have seen old F1 v10 cylinder heads that basically are cast in the shape of an i-beam to aid in torsional rigidity... Here in the states the drag racers and NASCAR boys like to use engine plates... I saw a cadillac cts-v road racer back in the day use a motor plate designed from a billet of aluminum...weight relieved and everything... Look into that...this might work better for you... Otherwise I just saw this... Good luck...these type of projects can make you wanna tear your head out...! BTW...are you using ANSYS...?

[@gmcjimi1620]

Great videos good explanations !! Would you mind telling me what software you used to mockup your geometry ?? Also how large is it from outside tire to outside tire ?? Thanks

[@xfmotorsports]

In this video it was 3ds max but I recommend solidworks or fusion 360. It's 2000mm wide

[@mad-qm9dd]

i never subbed so fast before!

[@lloyddotimas6302]

You're the most awesome channel on youtube my man. I learn a lot. Thank you

[@maverick9769]

wow!!!just wow!!

[@navjitsingh4585]

Adams and lotus software is I guess you are using for suspension design. Please tell me if I'm right

[@scottlanham9433]

When working out the load the suspension arms would be under did you use any existing literature that might define what those loads would typically be?

[@TheHeretic435]

Awesome

[@Mlc545]

Holy smokes. These videos are incredible.

[@DirtTrackDave]

You need to come look at one of cars I work on and how they mount on my channel. I believe you need a couple ways to adjust roll centers for track tuning. We use all adjustable mounting points, control arm lengths and ball joint heights.

[@robertharlin5879]

Hi. Can you explain something to me? Why is the heim joint end rod bearing to body horizontal but not vertical? Thank you very much!

[@atomicrpw9171]

I enjoy all your videos and I was wondering what you think the best way to practice mechanical engineering is I live in China so I can’t do big projects and there are many weird laws I was just wondering if there is a simple thing that me a 15 year old student could do to sharpen my skills I have been working with PCs but that can be pricey with my “income” XD

[@balintszalai1545]

Whitch 3d design program it is?

[@David-uu4ij]

How do you adjust the camber? without bending the wishbone out of shape? I must be missing something, cheers

[@Ultimab]

Wow love the way you explain and the depth you went into designing this, Might use some of your ideas in my project. ;)