Designing The Ultimate Cyberpunk Suspension - Kinematics 

I'm sure you've already checked, but make sure your model has space for 6in of vertical suspension travel with the wheels on and steering. Many video games either have the wheels clip through fenders or they animate the wheels steering less than the physics would imply (Forza and GTA V do this (haven't played Cyberpunk)). Forza 1 didn't fake the visuals and on LMP cars you could steer through the inner part of the car because all cars in Forza have the same steering lock.

@@grantlauzon5237 I'm making sure of that. Thanks for the suggestion though!

You should get in contact with Burning Wrenches here on RU-vid. Pretty sure that mad lad could give you some tips on building a Quadra since he's building one himself. He seems to be mostly focused on the aesthetics and body-design of a Quadra and not so much the actual performance of it, but I'd wager he's THE expert if you want your Quadra to look like a Quadra.

Be sure to check out RACE's website too, which is where I learned most of this. They have been super helpful in this process.

Thank you! Oh, don't worry, there will be plenty of guessing and hoping. It will just be educated guessing and hoping. I am quite aware of burnout, so I take brakes when needed, which is part of why this video took so long. Plus, I want to post videos that I can be proud of.

The original game engine used only springs and spheres. It was fairly simplistic, but it sure was fun.

Suspension lore vs gameplay

yep, would also be amazing to see them both side to side when finished. although, the conception of project 66 seems more lengthy

Lol, I bought a broken $60 DSLR camera off Facebook marketplace that I fixed, so I call it worth it.

That's the best part. How could I keep it out?

@@Project66Hoon That's right, you couldn't. Or else....

I'm going to fabricate one

Thank you! I've already got a few suggestions that I am going to apply.

@@Project66Hoon also for the headlights, you could make the outer sides of the front grill-cover thing a smoke finish, which is usually a clear coat of paint over a light lens with a little bit of black paint mixed in. Searching smoked headlights can give you some good references for the efficacy.

Thank you! I decided to not do more of the kinematic KPIs as it would have turned into a very long video which I feel most people would not want to watch, so I tried to strike a balance of being in-depth while being brief. For those who are rally interested and want to learn more, there is RACE's website. I will be covering some of the dynamic KPIs in the dynamics video. I didn't make the KPIs the input because some of them directly contradict each other, and some of them are so related that it would be difficult to know how to set it. I can set some of the KPIs to what I want right off the bat though, so I can start from a pretty favorable position and then go from there. Also, RACE doesn't accept KPIs as inputs, just the hardpoint locations.

Thanks! It's called motion canvas.

I'll check it out!

Starting out, I want the car to be very safe as I am not accustomed to drifting cars. However, as I get more comfortable with it, I can change it to something that is more likely to drift.

Feedback received

I just saw a reply where you said you're not doing the crystal dome system. That makes sense given that you want to have it be road legal. I'll keep dreaming my dreams, lol.

Lol, maybe in the future

I actually learned most of it from RACE Software. Their website goes over all of the kpis shown in the video. The link to their website is in the description. And thank you.

@@Project66Hoon right on man! thanks!

Thank you! It's made using motion canvas. Another creator on RU-vid made it. It's all programmed in typescript. There is a documentation website and discord that I learned from.

iirc motion canvas is made by aarthificial. He uploads beautifully animated game-devlogs, you could check them out too

I used Motion Canvas. A fellow creator on RU-vid developed it.

Yup, I've seen a few of Burning Wrenches videos. I'm planning to take the motors from a Tesla model S so I can get some fun torque while driving. The crystal dome would be quite difficult and above what I am capable of doing. Plus it would likely make it pretty hard to make it road legal with that.

I have repeatedly wished for a website like McMaster but for all car parts. It would be so nice.

I'm not sure to be honest

Thank you! For all the kpis, they are described on RACE Software's website, which is in the description.

It's my first time using GitHub, so don't be surprised if it's not top quality.

In my talks with those who are much more knowledgeable than me in this area, I learned that it's extremely important to have understeer as it will be more important and predictable in an emergency situation.

I haven't done Formula, but I have some friends on it and I've been involved in Solar Car, which is similar. I haven't looked much into an API yet, but I can look into it. I want to wait to actually start optimizing the suspension until I know the regions that hard points can and cannot be, so it will be a bit before I can actually do that unfortunately.

I am not as I don't know of any vehicles that do what I am looking to do.

@@Project66Hoon Check out the Local Motors Rally Fighter. You may also find some good info over on Dezert Rangers and Race Dezert. Old forums and i don't know how active they are anymore but prerunners and blasting thru the desert at high speeds is a way of life here for some folks. Lots of great info over there on long travel suspensions, chassis design, etc. One last thing that might be cool: if you are dead set on building the frame out of aluminum, on the Porsche 917 they pressurized the frame with nitrogen and had a gauge on the dash. The driver was told to keep an eye on the gauge and if it drops, to stop immediately. Aluminum will fail given enough load cycles, and by the time you build a safe margin in you may be better off with something like 4130. Just some thoughts that struck me when i saw your vids. Good luck with the build! Looking forward to seeing it come together

It definitely could be, but, and I could be wrong, I think it would require an actuator for each side, which I think would need some kind of motor for each. If I were more experienced with this kind of thing, I might go for it, but steering is an important safety system on the car and I want it to have as little chance of failure to begin with. Once I know more of what I am doing though, there is always the possibility of me adding something like this.

Burning Wrenches is already making the stock version. Plus I love the look of this one.

Another channel on RU-vid called Burning Wrenches has been making another car from Cyberpunk and has been fine for quite some time now.

@@Project66Hoon Thats good. I just mention it because B is for Build had to give his custom mustang for a similar thing.

Oh, I will. Don't worry

I thought I had included it, but I guess not. I am aiming for roll center in front between 0-100mm and rear between 50-150mm. I still have a lot more to learn, so everything is still subject to change.

@@Project66Hoon Your last sentence is a really good sign that you have a solid approach. On the roll center's, I didn't see it in this vid, I think you indicated you might include it in the video on dynamics, though the roll center location is really a kinematic property. One note on static toe, and stability: static toe implies the presence of a slip angle, by definition. Anything that changes the normal load on the tire will modify the lateral force produced by that tire. As such, an increase in normal load, due to lateral load transfer for instance, is going to increase the lateral force. Static toe in on the front axle, toe out on the rear, will increase the net yaw moment, which will increase the lateral acceleration, which will increase the lateral load transfer....I think you see where this is going. Obviously toe out on the front axle/toe in on the rear, will reduce the net yaw moment. I'm not suggesting that this process could actually become unstable, the toe angles are typically not even close to being large enough, it's just something to be aware of. The load transfer effects will have a slight phase lead, due to jacking forces, over toe change due to kinematic effects (bump steer, roll steer), and compliance effects (lateral force compliance steer and camber).

@@wiloberlies9598 Thank you for the input. Some of this is still over my head tbh, but I think I understand the effects of static toe. I didn't cover it in this video as I covered it in one of my previous videos and didn't want to make this one unbearably long. I am also planning to make the suspension adjustable due to manufacturing errors, not setting quite right KPIs, and just because it's a smart thing to do.

@@Project66Hoon I apologize, I didn't realize you'd covered static toe effects in a previous video. I should have watched the other relevant videos.