Unbreakable 3D Printed RC Car Parts: Improved Version - WLToys
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- เผยแพร่เมื่อ 20 ต.ค. 2024
- 10 months ago, I posted my first video about this type of super durable, 3D Printed RC Car Arms with great success. The first version of them however, was super flexible, impacting the handling of the car. Now I've fixed that issue as well, and made them even more durable in the process - enjoy the video!
Buy the car shown in the video here: s.click.aliexp... *
(“124019” is the one in the video, “124017” is the upgraded, faster brushless version)
Download the 3D files to upgrade it yourself here: www.printables...
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Music used in this video:
Joakim Karud - Road Trip
Joakim Karud - Show Love
Jeremy Blake - Heaven and Hell
Song: Markvard - Be With Me
Music provided by Vlog No Copyright Music.
Video Link: bit.ly/3MSBzUt
MaxKoMusic - An Epic Story
(*Affiliate link, I receive a small commission at no extra cost to you)
Buy the car shown in the video here: s.click.aliexpress.com/e/_mO1xm4U *
(“124019” is the one in the video, “124017” is the upgraded, faster brushless version)
Download the 3D files to upgrade it yourself here: www.printables.com/model/814875-wltoys-unbreakable-arms-144001-124019
*Affiliate link, I receive a small commission at no extra cost to you
HSP use a very flexible plastic on their suspension arms, during acceleration, you can see the suspension geometry is changing. During collision, the plastic bend but the drive shaft absorbed all the impact, resulting so many bent drive shaft.
Hmm okay I see, I haven't notice that with these. I think the HSP Driveshafts are also very poor quality so that might be another reason why they bend so easily
@@ValRC1The scale factor also metters. And the wheel diameter.
For example, I've got a 1:8 scale Remo Hobby Dinosaurs as my daily driver.
And didn't experience any suspension destruction yet (most likely due to it being a factory tuning option made of injection molded nylon ).
But it grinds cups and T-bones on the ends of it's CVD drives like crazy - and it's not a material quality issue - as all of mine t-bones are replaced with segments of drill butts of matching diameter. Still they last about a couple of months with those huge wheels - with a pedestrian 60A ESC.
Was looking forward to move to the metallic telescopic drives for a long time - but the stock suspension wasn't uite fit for the job.
Now they've released a new tevision of the Dinosaurs, with the new lower suspension arms which allow for any Slash-compatible telescopes to be installed.
So already got the 150A ESC at the shelf, waiting for the new suspension arms to get out on into the market - to both gain some low-end power, and eliminate the biggest factory flaw this model has with it's CVDs not lasting at all.
awesome video i've been wondering this since the getgo. There must be a TPU formulation that's both dimensionally stable and flexible enough to take hits and be structurally sound. Awesome stuff man!
maybe one idea is to print channels onto or inside the A arms, then you could run straight thick copper/aluminum/steel wire through it. keeps the TPU perfectly straight, and when you crash you just pull out the bent metal stick and replace it with a straight one?
Extrudr has some Carbon Fiber infused TPU, been thinking of trying that stuff out. Thanks for watching!
Great video! Have you ever experimented with 3D printing these parts using PolyPropylene (PP)? Stefan from CNC Kitchen suggests that it boasts excellent impact resistance and equal strength in all directions. It's semi-flexible, potentially offering more rigidity than TPU while still flexing upon impact.
I have actually. But for some reason, my parts printed from it weren't very durable at all and even the ones printed laying flat I could just rip apart with my hands 🤔 maybe my PP was just really bad quality
@@ValRC1 that's a bummer. Stefan's test got my hopes up for PP.
@@Curly3107 I bought mine after I saw his test as well. As I said though, might just be bad quality - I bought "Renkforce PP" 🤔
@@ValRC1 I have a roll of "Formfutura PP" lying around. I've been wanting to test it for ages but haven't found a good print for it yet. Now I'm curious to see if it behaves differently. Maybe I will try it next week.
@@Curly3107 I think it would be a great test! Let me know how it goes
What 3D printer exactly are you using?
pretty good and tough
Yep, thanks for watching!
This is great to watch, very interesting. Do you think you could maybe do a video or suggestion on your 3d printing setup ? would be great if you could include things like how you got into it, or where one could best start ;) Nice music btw!
Thank you for the video Idea, I'll keep it in mind. I actually got into 3d printing because I saw a couple of videos on it on the youtube channel "RcLifeOn" a few years back, then got a Prusa MK2S as a Kit and figured it all out. Just a few days ago I got a second printer for only 50€ second-hand, might do a video on that as well. Thanks for watching btw!
Nice video ! btw Tpu 95A ?
Thanks! Yeah 95A TPU
Does it mess with the handling or steering, suspension geometry specifically under load? I'm working on a project to 3D print a whole 1/10 scale car, don't know if I should use TPU for the arms as shown here though due to flexing. Guessing that for a lighter car it might not be a problem but for a heavier car not sure.
If the arms are thick enough and you print it in some harder TPU like 98A or 58D it should be fine. There's only one way to find out though!
Thank you so much for your work! I have printed your previous arms and they turned out great! Have you put out the file for the new arms yet? I would love to try out this new design.
Thanks for the reminder, just uploaded them! www.printables.com/model/814875-wltoys-unbreakable-arms-144001-124019
Maybe you can design in so.e holes for thin carbon rods to make it stiffer? Really cool in any case :)
I could, but I think the carbon rods would probably just snap if the arm gets hit 🤔
Do you know if Bambulab 95A TPU will work? Thanks
I'm not sure, but if it's not too wobbly it should.
If you wanna be sure it's best to take a stiffer TPU like 98A or 58D
Glad you kept working on it. Any plans trying to print in TPU 58D?
That seems like a great material for stuff like this, but all the filament I can find seems to be way more expensive than normal TPU - do you know any brand making it for relatively cheap?
@@ValRC1 nope sry
If I send you an RC car, would you make all the parts of it 3-D printable? I have an RC club where members repair their own cars, but we always need parts. Our two standard cars are the laegendary sonic and hyper go brushless.
Unfortunately not, as it's just way too much work to 3d design all the parts
TPU is surprisingly Indestructible. will you release the models?
I think I want to improve them a bit more before releasing anything
My sun brakes the shocks on this one all the time. Next step 3D shocks or torqbars as shock 😊
Which way do they break in? Have you tried putting droop screws into the holes on the arms to limit the negative shock travel and prevent them from getting ripped apart in tumbles? That fixed the shock issues for me on this car
@@ValRC1 He hits walls in lika 45 deg angle right into the tire and the forces bends the piston and last crash it also broke the eye connecting to the control arm. been thru 4 sets of shocks for the front so now I'm going all in on TPU shocks for the front.
@@ValRC1 but that's a good tip reducing negative travel! :)
Please make one with the hole for swing arms. Thank you so much
Hey, what exactly do you mean by a hole for swing arms? Aren't the actual parts I printed the swing arms?
@@ValRC1 sorry, i meant sway bars
Is it posible to use a tpu core and an abs/asa outta layer?
On a multi material printer yes, but maybe the hard asa shell would just break on impact
My idea is based on steel concrete, tensile core, compressive outta casing
Subs, do you have model for the front bumper?
Iirc I downloaded that one from thingiverse
Hello I've been looking everywhere for an STL file of the part PX9300-11 for DRC
Sadly I don't have that car, so I can't design one
If only rc companies used these, it wouldn't cost them much...
I'm actually not too sure on that.. could cost them substantially more due to being an additional material they need to store and manage.. but yep would be great to see some better arms shipped.
Also, wltoys seems to be having some quality control issues, as I showed in the video the older wltoys arms I tested here held up much better than the ones I tested last time, which I got with my newer car..
Handling would also suck
@@stokedGSXR nah it's fine. Didn't really notice a difference. Maybe on a track but this isn't really a competition rc car
they have to make their money
@@ValRC1 what could be a factor, is that plastic is hydrophilic, so over time the plastic gets more flexible due to water becoming part of the plastic. People boil plastic rc parts for the same purpose; to make it more flexible. Not sure but that could be another explanation.