Testing 9 Types of Suspensions for Lego Technic 

I don't know for how much realism you want to go, but it would be more accurate and scientific if all the wheelbases would be the same.

I like how the chain shaker performed better after it destroyed itself

That rubber cruiser is like a leaf spring setup, that’s cool.

My mind is blown. My Lego cars are forever changed. I need to rebuild all of them with these amazing suspensions.

I was really impressed by the summit seeker. It took a vertical vector and absorbed the energy by converting it horizontally

0:35 swing axle suspension 1:31 swing axle suspension 4:31 solid axle suspension 6:43 trailing arm suspension 9:16 double wishbone suspension or pushrod suspension

Someone’s ripping off your vids on tik tok btw

I feel like you would get better results if you used a larger tredmil for more varied terrain. Also trying to combine suspension methods. The idea being that you impact a soft suspension and then a hard suspension so the whole ride is smoother than with just a soft suspension or a hard suspension.

There is problems with your tests, for example: you're using different length and width wheel-bases for same tredmil, also wheel count. This is causing unfair scores, so efficiency and durability tests are for satisfaction. There are different variables such as: length, width of wheel-base, wheel count, wheel weight, weight of unsuspended part, range of suspension, stiffness of suspension, height of center of mass. Very small amount of those is taken to account. Like, models with long wheelbases is OP for a jump cause they rotate less while riding off a ramp. Also you're tugging from the front instead of from the axis, that is going through center of mass, that causes bounce nomad to flip over! There is so much room for -improvement- part 2!

I feel like it depended a lot on the stiffness on the suspension. I wish you somehow compensated it so the stiffness would be equal. I think the dampening effect of the rubber tires for example would become more beneficial if you put more weight so they could compress more

Feel free to make any suggestions for Lego car suspension

The crawl voyager fared well in all tests. Looks compliant and steady .

This was pretty cool. The rubber cruiser was almost like solid axle leaf springs, but with rubber rather than spring steel. The summit seeker was kind of a mix between double wishbone and pushrod. And the spring rover was almost like semi trailing arm.

Your videos are getting posted all over TikTok. Consider channel branding on the Lego itself.

I have never thought of magnets as suspension

It would be interesting to see a test of different suspension geometries, like swing axle, double wishbone, mcpherson strut, swing arm etc. And see if you could make anti roll bars and test the difference that makes as well

If you're using spring suspension you always need a dampener because spring will oscillate which causes the additional shake in small bumps test, which in turn makes the carrier less stable. With sort of free floating rubber tires you needed a guide rod in big bump test so that it wouldn't fall over due to tires being carried by inertia tip over the whole cart. And also it doesn't help that the suspension isn't connected to wheels directly. Magnet suspension would work much better if it was stiffer, because it really was too soft. More magnets or stronger ones would make it much more reliable, and also just like in spring suspension it should've had a dampener, which would be easy to make just by surrounding the magnets with aluminium or copper so that they would cancel the oscillations quite quickly. I think the "summit seeker" type worked the best because it was stiff with two rubber rings and it didn't need dampeners because rubber didn't oscillate that much as in "crawl voyager" (which needed a dampener). and as for chain one, well... It's a funnier character than we ever had.

Super fun! These were variations on suspension geometry as noted earlier but none had dampers. They all had springs. A real damper must allow the spring to compress near its normal rate but then rebound at a much slower rate. This is usually done with one way valves of different sizes in gas or hydraulic shock absorbers. Challenge: Make a Lego shock! I have no idea how!

4:40 FINALLY LEAF SPRING SOLID AXLE SUSPENSION! Wanted to have one for sooo long… Edit: i remade the rubber cruiser’s axles, made steering, but I’m missing 30 rubber connectors…

New microphone?

I’ve always loved the aesthetics of these videos, the choice of background, lighting, even the part colors, you obviously put a lot of effort and attention to all these. Lovely blend of pleasant footage, informative builds and a perfect amount of humor, all very lovely. Keep it up!

I'm not sure what's more impressive, the suspension or the fact that the car didn't fall apart.

Thanks for the credit! Cool testing setup, I would have expected my suspensions to do worse :)

Can't wait to see these cars hit the market. I'm calling it now: Lego Grand Prix is about to get lit!

The Summit Seeker really has a very creative suspension system that works really well, I could definitely see this being used in cars. P.S. You do a great job with your vids, keep up the good work!

Pneumatic suspension?

i think the summit seeker won the competition

Dr. Engine, I found great pleasure in this video. Thank you for maintaining a consistent posting schedule. As a result, I have become a new subscriber. Does anyone else share my sentiment?

I like the summit seeker! That design is unique it seems because of the combination of vertical and horizontal which minimizes the vertical bounce. Wow- mind blown

The rubber cruiser dances like a hiphop car 😂

What a fun video! Great work. Would be cool to see a version where wheelbase, wheel type, and the location of the center of gravity of the load are the same across models.

I'd love to see a video in which you try and optimize the perfect suspension in an evolution style progression. Great video ❤️

Everything is very interesting - in real life I would definitely consider building a closed container, then the losses would be significantly lower 😉

Not sure if its real or animated. 😂

Great video! Looking forward to the next ones!

Nice video

I'm not sure Lego is ready for this level of engineering.

Whoa, I had no idea this piece was so versatile, that reactor you built was incredible! Great video

This is just amazing. great video

brilliant super

The magnetic one is cool because it has a built in progressive spring rate

Good lord. That chain sheker thing just straight up exacerbated the problem

Summit Seeker easily won, no doubt about it. Give it a LEGO trophy made of suspension pieces! Also a video idea is Lego cars vs slope with oil.

Enthusiastically, I really like the Crawl Voyager, Rubber Cruiser and Bounce Nomad because they carry heavy things. They’re also good at carrying more passengers than the others.

Really enjoyed! i do think through that the stiffness of the chassis, number of wheels, wheelbase and the hight of the load bed, had a large role in some of the models loosing its peaces. Would also bee cool to see an air suspention version!

this madlad has quality content as good as Brick Experiment Channel's videos

This is very impressive!

I absolutely love watching these videos! This one was super fun especially! Really interesting to see how each of these builds manages the challenge at hands.

In almost all of these challenges, a much softer spring rate would have provided a better result. Perhaps a test combining several suspension types together? I also feel that a similar wheel base would lead to better results

When I saw you building the Summit Seeker I knew, this one’s gonna be the best

Double-whishbone push-rod nails it. Would be also interesting to include same geometry but a pull-rod setup. Cool thing about this kind of suspension is that you can easily controll the stiffness with pre-loading springs/rubbers

There's a lot going on here! I noticed the...cab mounted suspensions, Where the wheels themselves were on a separate platform behaved worse than a solid axle. I think if you combined independent 6 or 8 wheel suspension with a dampened version of the bounce rover you wouldn't lose much at all. On the chain suspension If the chains were light duty elastic and secured from the top and bottom of the mounting posts to the corners of the cab like an x split in two it might retain more, could try on the sides too instead of just the front. No matter which design retains more product it will either be the most complicated to assemble and work on or expensive to build and maintain which is why your Amazon boxes show up dented and you can hear the delivery truck hit bumps from 8 blocks away.

Rubber will typically results in a better ride due to its natural dampening effect, spring based cruisers had too much rebound wity no dampening.

that intro was unironically better asmr than most youtubers

The crispiness of that Microphone is unbelievable

lmao the little lego driver at 4:06, "yuuuuUp, still driving, ab ab absolu absolutely no probbbbllleeeeeeeem"

Polarity Pathfinder was innovative, but Rubber Cruiser the simplest solution. Try front-rear interconnected (like Citroen 2CV or Rover Metro) to make pitch frequency much lower. Then try some of the interconnected methods used on NASA Pathfinder and Spirit/Opportunity rovers.

Can we please get a behind-the-scenes look at the Lego suspension testing facility? I need to see this magic in action.

Voyager and summit seeker was insane🔥

I love all his Lego videos using real techniques. However, there's a limit in the field of suspension. You can have all the suspension diagrams you want, but there are never any real shock absorbers. All the variations of springs are interesting, but in this kind of test, the role of the shock absorber is essential. It's the damper that controls the movement of the spring, deals with the energy it will release and therefore dampens the movement. This is one of the limitations. That doesn't change the fact that it's super interesting, it's just the way it is.

You should make a tank with the Crawl Voyager suspension system!

Thank you for this masterpiece of Lego engineering and entertainment. You have made the internet a better place today

The Shock Strider was my favorite, so satisfying to watch. Excellent, entertaining video!

The summit seaker has by far the best results, but after some use, the rubber bands might have an easy time snapping. For reliability and maximum preformance i would go with the rubber cruiser. Further testing and reliability enhancements to the seaker might make it the obvious choice.

I love that rubber cruiser , since most Indian trucks have leaf springs this is very realistic

I really like the leaf spring design with the rubber technic bushings, but my favourite is definitely the pushrod setup at the end. I haven't really seen that type made from Technic.

crawl voyager is obviously the winner here but I was really rooting for the rubber cruiser

the rubber cruiser has won my brain, but the chain shaker has won my heart.

3:39 this one's got Fedex taking notes

You could try to create just one car with the diferent suspensions combined

funny how the solid axle leaf spring model works so well

I love the spastic chaos on the high speed😂

suggestion: put all of the suspensions ontop of eachother and see if it really is the smoothest

Who needs shock absorbers when you have pure, unadulterated rubber band power?

I'm suprised the solid axle and leaf spring suspension did so well! I think the rubber connectors worked like shock absorbers and provided dampening to stabilize the load and unsprung weight.

My first time seeing so many different types of suspensions

i think the tests were kind of unfair considering that the rubber band one had multiple wheels. plus, the rubber cruiser and the bounce nomad had a higher capacity than most of the cars. (not to mention that a lot of the wheels came in different shapes and sizes).

I think crawl voyager is the best

the chain one had me rolling XD

I think it was a clever way to control for variance by using different wheels and tires for every test

What an amazing piece of work you've done here! Very inventive and well thought out!

Amazing to see what different suspension setups can do. Awesome work yet again Dr. Engine! Edit: Summit Seeker and Rubber Cruiser are the best!

Hi! Dr. Engine. I'm DDadan, a Korean Lego youtuber. Your experiment with Lego is really amazing and interesting. Would it be okay if I made a video introducing your Lego experiment to Korean Lego fans? Of course, I'll leave the source!

I liked the performance of the Crawl Voyager the most. It seemed the smoothest in most tests. A good all-rounder. It was also kind of mesmerizing to watch.

WHAT OH you're a genius

these are so creative! i love it!

The magnet one surprised me so so much 😂

There's so much to love about this. The cartoonish contraptions, the genuine ingenuity of the designs. Not to mention the fun camera angles

The spring rover’s suspension is similar to that of a Station Wagon. Awesome video! 🎉

This is like watching a real-life Hot Wheels crash test...but with more bricks

Some of these are very creative and quite fun!! But there's too much variance in vehicle frame layout, type of tire used, height of bed, height of bed walls, and several other major changes between each test for the data to have any real meaning. For the data to be in any way a scientific comparison, a common and unchanged frame design needs to be used for all suspension layouts. Still, some very fun and unique ideas. I do enjoy the freedom of creativity that the LEGO system offers.

Hahaha! Thanks! :D +1 for always just carrying on as if nothing happened, even if the failure wasn't actually caused by the types of suspension but rather by the rest of the constructions! :D I was really looking forward to the magnet based one but it sure would have been more successful if combined with a solid double wishbone, wider wheelbases and probably stronger magnets. Also I was quite impressed of the rubber based one!

If the summit seeker had a better supported cargo box it would have dominated

You need to build an rc car with the one that did the best in all 3 categories

As a sucker for multi-plane linkages, the summit seeker is definitely my favorite

All in all a good example for the fact that beside a spring also a damper is needed in a suspension

Question; Why is the load so high up?

SUMMIT SEEKER SWEEP!!!

What an awesome build! Thank you for the walk through!

Shock Strider, Crawl Voyager: Swing Axle Polarity Pathfinder: Sliding Pillar Chain Shaker: There's a reason why we don't use this. Rubber Cruiser: Leaf Spring Solid Axle Elastic Explorer: Leading Arm/Trailing Arm Spring Rover: Trailing Arm Bounce Nomad: Technically Rotational solid axle? IDK Summit Seeker: Double Wishbone with pushrods