Positive caster explained with Lego Technic w/ instructions

Instructions at my website: dgustafsson13....
Dimensions and data:
-Length: 14 cm
-Width: 14,5 cm
-Height: 8 cm
-Weight: 137 g
-Positive caster angle
-Individual suspension
Instagram: / dgustafsson13_youtube
Twitter: / dgustafsson13
Flickr: www.flickr.com...
Music from KZbin audio library:
-Sugar
Dgustafsson13 2017

[@szargos]

all i know, is that this is the 3rd highly rated video i've had to watch on explaining caster. FINALLY this one explains it easily! Thanks!

[@dgustafsson13]

+szargos Great to hear that! Thank you for watching😀

[@timehunter9467]

Old school term is king pin inclination, but yeah, this helps real cars return to centre and stable at speed. Excellent video!

[@tedhobby]

THANK YOU! Now I understand why it's said positive caster will improve stability. Swivel caster wheel helps a lot.

[@rockagold3819]

A fascinating and fresh look at simple concepts of steering. You've earned yourself a sub!

[@dgustafsson13]

+Peter Lin Thank you very much! :)

[@CauldronicKeep]

Good video and demonstration but if I may add a little constructive critique; the example of the swivel caster is incorrect. When the caster wheel center (blue dot) is behind the pivot point (mounting bracket above), this is an example of negative caster. Negative caster has the wheel load projected behind the where the wheel contacts the ground. This is why the wheel swivels and follows the pivot that it is mounted from. This also makes it unstable at high speeds. When the wheel center (blue dot) was in front of the pivot point above in the video, that is an example of positive caster similar as the vehicle. However for this example, there is no lower arm (because it is a caster) to keep the wheel in place and hence it wanders all over the place. Positive caster has the wheel load projected in front of where the wheel actually contacts the ground making it track straight, return the wheels to center after a turn and very stable at high speeds. A good example is a bicycle's front wheels; the reason why one is able to (with practice) let go of the handle bar and have the bicycle riding straight. Once again constructive critique, I understand a lot of time, skill and effort has gone into making this video and do not wish to take away from any of that. Cheers

[@97hondacivic]

It would be a good idea to explain Ackerman geometry. BTW very good video :D

[@dgustafsson13]

+Mati Pieńkowski Yeah that's a good idea, will put that on my To-Do List ;) Thank you!

[@dgustafsson13]

Jétix Good idea👍🙂

[@spixus3is]

Sorry I'm late! Your videos get better and better and your creativity on building these models are priceless!

[@dgustafsson13]

+JLS Productions Oh that's fine🤗 Thank you a bunch!☺

[@jltworks3167]

Effectively you just build the typical front axle with suspension, but when connecting it to a chassis you connect it vertically, same as what I did with my baja truck which was a huge success but was driven by a lunatic XD. But you’ve summed this up great, great vid as usual 👍

[@BrianKongXD]

Quality Videos! As a mechanic in Lego Technics these are very helpful.

[@dgustafsson13]

+Brian KongNam Thanks a lot :)

[@quintenluyten6382]

Hi, awesome video, but you forgot the second benefit (wich is useless for lego vehicles) : with caster, the wheels also get to lean into the corner (the top of the wheels closer to the center of the corner), and at speed, the tire will deform in a corner, wich is cancelled by the leaning of tire to make sure as much of the tire as possible makes contact. Only recently learnt this though.

[@dgustafsson13]

+Quinten Luyten Thank you! That is true, and as you say, in the world of LEGO it doesn't matter really. Which is why I chosed not to mention it in the video. For the case of simplicity🙂

[@sanjeen2503]

Plz show negative caster in the four wheeler and the effects on holding the steering and on releasing it

[@howtodeletethischannel5881]

Great tutorial! I might use it for my next trophy truck mkII a completely new design. Almost nothing would be from the first one in my channel

[@dgustafsson13]

+Blueparrot lego creations That's wonderful to hear!😀👍

[@jiwonwang775]

thank you! it was so helpful!

[@doxel8691]

great explanation!

[@dgustafsson13]

+Doxel Thank you!

[@GreenGeckoLegoTechnicWorkshop]

my baja buggy has got caster in the front suspension, goes dead straight at high speed. great video btw

[@dgustafsson13]

+Green Gecko Lego Technic Creations That's great! Thank you :)

[@hoosclub]

I am car maintenance in Korea. In Korea, there is a cargo truck with a front axle integrated axle, When the straight-ahead stability is very poor and the road surface in the vertical direction is running It has unstable characteristics to move the lane The caster reference value of the truck is 0, so I try to change it to positive. I looked at this video while looking for various data Thanks to the video, I have come to know exactly how the positive caster changes the straightness. Thank you, and I want to know how to buy the product.

[@sanjeen2503]

Nice video

[@joannatate]

Awesome got notifications on

[@dgustafsson13]

+Farmboy Gaming That's awesome, thank you!

[@hunter7476]

cool never saw one of those before

[@dgustafsson13]

+brick master Thanks!

[@hunter7476]

yeah sure its helpful when you showed it

[@prototyperc983]

now. I accomplished -3.5degree camber, 5 degree caster. and very small amount of negative toe prototype. it handled ok. suspension was tricky tho.

[@prototyperc983]

I designed it to be a lego track car. but I could only do the front independent suspension, not the rear, due to lack of pieces

[@dgustafsson13]

+Prototype RC Sounds cool for sure👍

[@prototyperc983]

with the tires under its own weight. it made 7 degrees of camber

[@Retrad_]

this is how you gain a subscriber

[@dgustafsson13]

Oh well thank you :)

[@allaboutlego1540]

Very nice!! And very helpful too ;D

[@dgustafsson13]

+All About Lego Thanks a lot! :D

[@johnalexandermunerapresiga5331]

All About Lego lo del piso y la de la Alpujarra de la Alpujarra la de los dos últimos semana de la ciudad y de paso

[@josh573a]

nice work this will really help me. Could you do a version with the slandered wheel hubs and the 7 long gear rack as they are a little more robust. thanks easy way grate set up thanks

[@dgustafsson13]

+Josh McLaughlin Great to hear that! Probably not gonna do that in the nearest future, but some day maybe

[@josh573a]

Dgustafsson13 ok thanks

[@helenlewis7270]

I think you should put all your peace together and make a remote control car

[@dgustafsson13]

+Helen Lewis I've done that several times already😉

[@ThinkCleverAndSmart]

Riktigt bra förklaring som vem som helst kan förstå! Btw, det här är den första videon jag ser idag som inte är ett aprilskämt! XD

[@dgustafsson13]

+ThinkCleverAndSmart Tackar så mycket! Haha ja om jag inte hade varit fullkomligt värdelös på aprilskämt så hade jag kanske gjort en sån video med😂

[@ThinkCleverAndSmart]

Hahaha! Det är lugnt! Hoppas bara att du inte går på aprilskämten istället!

[@dgustafsson13]

+ThinkCleverAndSmart Nädå har bara gått på ett hittills, så jag har nog klarat mig hyfsat👍😉

[@ThinkCleverAndSmart]

Najs! Jag lurade ett antal från min klass att vi fick ha iPads på högskoleprovet idag. Att man fyllde i svarsalternativen på dem och att de hade google translate installerat så att engelskan blev lättare! Alla gick på det! XD

[@dgustafsson13]

+ThinkCleverAndSmart Haha! Låter som något jag själv lätt skulle kunna gå på för övrigt👍😂

[@sinri1111]

it is very helpful to me 😌😊

[@kaylamitchell1982]

Is this what cars in real life use? That explains how and why it springs back to its original position when moving but not when stationery

[@dgustafsson13]

+Finlay Mitchell yes! It's exactly the same as in real cars👍😉

[@gamingSlasher]

I think I actually understood that :)

[@dgustafsson13]

+gamingSlasher Great to hear😀

[@voidvoid5235]

Thank you!

[@kadebrown6162]

awesome! !!!!!! ! ! ! ! !

[@dgustafsson13]

+Kade Brown Thanks!

[@for.your.future.]

Great 👍🏻 video!!+1 sub

[@dgustafsson13]

+NightHawk Thank you!

[@ukaszrugaa104]

Real mechanics explains.

[@DeathByGlamour_]

Nice! :D

[@dgustafsson13]

+Thijs Van Hamersveld Thank you! :D

[@technic_legobuilder2834]

What edit program Do you use please say i would really like that!!!😃😃😃

[@dgustafsson13]

Adobe premiere elements 14, glad to hear that😀

[@technic_legobuilder2834]

thanks!!!

[@2107-h8s]

oui je suis français, mais je te souhaite la réussite

[@dgustafsson13]

+2107 Merci :)

[@laflammechristophe4548]

Bonjour les français. Moi je suis québécois

[@fangthewarrior]

Science!

[@dgustafsson13]

+Joseph Crissey 👍👍

[@whoknows2742]

Do you know the optimal angle for a positive caster?

[@hoosclub]

Every car is different, how can I explain it?

[@SetKat-Alex]

No April fool? I'm disappointed :'( Still, excellent video, and very interesting! Thanks! :)

[@dgustafsson13]

+Set Kat Nope sorry, and if you knew me personally you would understand why, because I'm absolutely terrible with making April fools ;) Thank you!

[@SetKat-Alex]

Dgustafsson13 Ahah, no problem, a lot of (too many?) KZbinrs make April fool! And I think that's hard to make one on a so technical subject! ;-) Very good job, keep it up! :D

[@dgustafsson13]

Set Kat Thank you for your understanding and support :)

[@SetKat-Alex]

Dgustafsson13 And thank you for delivering us great videos!! :)

[@dgustafsson13]

+Set Kat Just doing what I like to do :)

[@이주성-d9q]

not to be mean but why is this usful?

[@dgustafsson13]

+이주성 The video explains all that

[@whoknows2742]

What set did those front wheel hubs come in?

[@dgustafsson13]

+The LEGO Technic Mastermind I got them in set 42021 I think👍🙂

[@whoknows2742]

Dgustafsson13 are there any non-retired sets that have it?

[@dgustafsson13]

+The LEGO Technic Mastermind Yes quite a lot actually. Look up part number 15460 on Bricklink and have a look😉

[@jovanknezevic7894]

Peut-tu me procurer le site internet Cordialement

[@dgustafsson13]

Sorry, I don't understand

[@anonymous-hq7bg]

Will this work with motors steering it?

[@dgustafsson13]

+I Like Tasty Stuff Yes of course

[@anonymous-hq7bg]

But will the caster still have an affect?

[@dgustafsson13]

I Like Tasty Stuff Yes

[@anonymous-hq7bg]

Thanks

[@timurkelle8633]

Make negative caster

[@jovanknezevic7894]

it does not matter but I find

[@gtnb8633]

I need better explanation this video 2 short

[@erikrichardsson5264]

Hej

[@dgustafsson13]

Halloj