We 3D Printed Hubs For BMX Bikes And They Actually Work!

We Made 3D printed Hubs For BMX Bikes And They Actually Work! Matty Cranmer fully designed a set of BMX hubs and 3d printed them and it's one off the most original hubs I've ever seen. We built them up on a bike and tested them to see just how strong they are by doing a bunny hop, a barspin, a 180 to fake and then a 5' drop to flat and they didn't break! Weaver excited to design and build more BMX parts and if you have any suggestions please put them in. the comments!
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[@CambuGus]

You guys relationship, the content, Matty and his progression through different types of riding as well as his interest in engineering, the loyal long held friendships. These are why I love to watch this channel. Scotty, you are an inspiration dude. Keep doing what you guys do 🙏

[@christopherkendrex8075]

Matty your a jack of all trades! it's been really cool to watch it all to! between the welding, 3d printing, the roller bike, all the crazy builds, bmx, mountain, gravel, Ironman! I can keep goin! great job Matt!

[@lysergic_visions3203]

Talk about giving Matty’s gf a run for her money 🤣

[@TdotWolf]

If matty keeps listening to Scotty and willing too learn along the way he’s gonna be the next legend🙌 good job on Scotty taking him under his wing as seriously as he is

[@socrazybmx]

if you can scale that up by 2%, you can do what's called lost PLA casting...you dunk the plastic print into a ceramic mud similar to drywall compound, then burn out the plas5ic in a kiln. the remaining ceramic shell can accept molten aluminum, and the extra 2% dimension allows the hot metal to cool, and the part will shrink to the desired size. I have the gear to do this at home if you're interested in seeing these in metal. I'd just need a few hub prints to do it.

[@rakkon1]

Yep totally correct. Bringing it to a machinists cleanup would be cheap too. One setup

[@joereadel]

Oh sick

[@ohdehhan]

Awesome.

[@MTB-ENG]

Rocket motor design engineer here - I'm legitimately impressed. Well done Matty! Matty, you could send the tinker CAD file to a local machine shop and for a few hundred bucks you could get them to machine it for you. That would be a cool follow up

[@ElGancho08]

@ sadly Scotty never replies or even likes peoples comments. So they probably won’t see this

[@Fausto_4841]

i'm a rookie 3D pew printer. we use STL files, how easy do those translate, or is that what CAD uses too?

[@MTB-ENG]

@@Fausto_4841 you could read in a .stp file into a g code generator (solid works, Siemens, or other) and then create the CNC programming.

[@ericyoung2136]

@@ElGancho08 Scotty only writes people who can do a flair.

[@ElGancho08]

@@ericyoung2136 lol flair challenge words we will never see in this channel again lol

[@thelonewrangler1008]

There are several options for turning that into metal. I'm thoroughly impressed with your self taught skills Matt 👌

[@Honey_Daddy]

Yeah, he can make a mold and then melt and pour the metal. That'd be the easiest way that doesn't involve fully machining it. I doubt he'd get a lathe (I think they have a drill press already) to do all the machining. Pouring it and cleaning it up after is the most accessible way.

[@pendragonthe7th366]

Melt alloy cans in ya crucible and poor it into a sand clay Mold casters sand, tidy up with a dremel your logo would even boss onto the alloy if you done it fairly good, practise makes perfect sure monster have the cans to melt somewhere, monster alloy crainer hubs

[@Honey_Daddy]

@Sam Mc'Edd xD that's how one goes about seeming like they know things they don't know.

[@Glee73]

Looks like matty needs to buy that CNC machine next...

[@billklacks9908]

You can tell how impressed Scotty is! You guys have such a bond.

[@nastkillaa]

Matt has been doing some really cool stuff lately. Dudes a genius. And this rear hub definitely needs to be made out of metal. Make it happen Scotty. This hub looks incredible. It’s gonna be a must buy.

[@charlescoult]

Impressed with Matty's understanding of 3D printing.

[@jaxxtenmarkko8489]

Make hubguards!!!! They already come in plastic so just try to use the same type of plastic if possible it’s been so impressive seeing matty learn all these skills

[@alexandersillan8139]

I love how Mattys creative juices are flowing…. If he keeps it up it will flow over into his riding as well… Also, you can create it in the cheap plastic, compact sand around it and pour metal into it, it will melt the plastic and go into the gap where the plastic was leaving you with metal parts…. Have fun guys and play around with it… Maybe even Scotty can create parts, hell I would buy some MCV or CSD parts

[@ZigrePengin]

With the right material like CF-Nylon(PA) or Polycarbonate(PC) /CF-PC you could easily make a brake lever or the arms that grab the brakes. Pedals could also work, bar ends, hub guards, and probably lots more. The key to 3D printing is material choice, good print settings, and print orientation. Understanding how your parts are going to be stressed and printing/designing them with that in mind can make them almost as strong as a conventionally made part. Well done Matty, cant wait to see what's next!

[@joed899]

There's carbon fibre reinforced filament that is insanely strong. It's basically the same as the material used to make the A380 wings. If you get a receiver made out of steel or titanium for the drive pawls to engage with then 3d print with the carbon reinforced filament you'd have some insanely light and strong hubs. Be careful with the filament though. The cheap stuff ($50 au per kg) won't be great. The aircraft filament is closer to $180 au for a 1/2 kg roll. But a bit of hunting around and you'll find the good stuff.

[@MACISUS]

Just be aware it’s not actual carbon fibre as the fibres are no longer than 1mm. Yes it’s stronger than normal PLA though. You also need a lot of tuning to get it right so experiment with different temperatures and extrusion heights. Also keep in mind carbon fibre and glow in the dark and whit filaments are more abrasive so you’ll need to swap out your nozzle more often. However you can put in a hardened steel nozzle and just use that for all prints. Or if really never want to replace it a ruby nozzle is $$$ but should last many many years!

[@mephistosprincipium]

I would just go with nylon though

[@kyleo1236]

Carbon fiber filament is more to help stronger filaments that tend to warp from warping. It won't help with layer adhesion. The carbon fiber will stiffen a finished print though. Continuous strand carbon 3d printing is a different animal and creates really strong prints but requires a special printer that costs thousands.

[@Willynita]

hearing matty and scotty speak is honestly like a gift to hear. i know that may sound weird but these guys are very good at explaining things from a base level! they explain all the basics and how they managed to build it as well as why they chose to build it that way! great job boys!

[@Blaaww1]

It crazy to see Matty grow over all these years. I remember watching old vids of the crew and matty reminded me of my little brother lol sometimes bratish. But to see him grow into the man his today just make me proud. Just like watching my own little brother come into his own. Not to mention MC has grown into one of my favorite riders. So well rounded and diverse it’s insane. All the crazy and weird tricks he has done just blows my mind! Keep up the great work guys!

[@ZigrePengin]

As someone who runs the 3D print lab of a makerspace I can say the potential of what you can make with a 3D printer is second to no other tool. It's the single most useful machine you can buy. Especially when you get into more engineering grade materials and ditch PLA.

[@CNYKnifeNerd]

I keep seeing people say this, and feel really dumb for not getting into it sooner. Any recommendations for a good one to start with?

[@Fausto_4841]

@@CNYKnifeNerd you can't go wrong with an Ender 3. it's about 200$ but deals are everywhere for like 150. tons of pewpew goons use it, it's kind of the hobbyist standard.

[@ZigrePengin]

@@CNYKnifeNerd If you can afford a Prusa they are the best out of the box and amazing tech support. If they are too pricey an Ender 3 is a great start but will most likely need some minor improvements.

[@ProntoProto]

I’m a mechanical designer(no engineering degree) for work & 3D print as a hobby and love this!! I hope Matty pursues this further, would love to work for his bike parts company one day!!

[@mikereimer4048]

Love how excited Matty is about his creation. And Scotty's hands are clearly working a lot better these days. He was spinning that wheel around so smoothly.

[@Rob_Fe]

Valve caps are a fun thing to print, can do all kinds of cool stuff, Also plastic hates to be at 90 degree angles, try to triangulate everything you can

[@Fausto_4841]

he's still have to use a raft and supports, but it will be more robust if you can rotate the file 45 degrees. the best pews are printed at an angle like that.

[@bennyventures8204]

Matty is a jack of all trades…very creative dude

[@BJubbies]

Great job Matty! You should try and make a sleeve that would fit in a metal step ring for the driver to grab on. It could be an insert that slips into a key in the plastic. Good work! I’m hoping to see these progress and other cool ideas you may have!

[@Fausto_4841]

he could do a progressive print where you stop it at strategic parts so you can put metal inserts that will eventually be sealed inside.

[@talltimber2240]

I got into 3d printing this Christmas. It’s amazing what those cheap machines can do.

[@gravedog666]

Matty just cant slow down!! very impressive. love the content Scott & Matt

[@josephcoloso5564]

I'm excited for for his ideas and toys

[@jamesdaniel3997]

Make it happen Matty! Very cool.

[@sethredding1233]

The rear hub looks like the old tree hub. Pretty sweet work man good job!

[@vgaportauthority9932]

Hey, there are flexible filaments for 3D printers that would work well for printing bar ends.. You could make the most perfect handlebar grips ever, perfectly shaped for your hands and stuff. I bought a 3D printer about a year ago, and it's just awesome when you get into it and learn a bit of 3D software so you can start cranking out your own inventions. It truly feels magical making a digital model just turn into a real thing in a matter of hours. Start the printer, go play some video games and eat dinner and stuff, go back to the printer and shazam, there's a physical object sitting in there... I just can't get over how crazy that is even though I understand fully how it works.

[@Tropicool]

Innovative and creative, Matty!

[@ethanrancharan5774]

The back hub looks just like the one I have on my road bike but Matty you are talented keep up the weirdness and the good work.

[@pauljames4510]

1:23 The rear hub reminds me of a tree hub that Scott used to run back in the day 👍🚲💨

[@snacktical]

3d-printed chain tensioners (for frames without integrated ones) might be cool. Low risk of anything going catastrophically wrong and someone getting hurt. Or maybe a 3d-printed gyro assembly, or 3d-printed brake pads lol.

[@chasegreer7714]

Make a metal insert with teeth to press fit into the hub similar to a bearing. Probably something you could cnc. And a new skill for Matty to add to his collection!

[@dionbritten5777]

3D printed pedals or either a sprocket hmmm so many possibilities. Absolutely awesome video.

[@i-_-am-_-g1467]

Polymer on it's own will just crumble on any bike, the reason "plastic" pedals don't die is because they're reinforced with a fibre. Usually glass. And also use a much better polymer than the likes of PLA (bottle plastic) used here

[@dionbritten5777]

@@i-_-am-_-g1467 thanks for sharing your knowledge much respect. I think they could probably try a seatpost or even a seat. Whatever they come up with will be very entertaining. Again thank you.

[@itstunatime7127]

The tree bmx hub had the straight pull spokes was one of the sweetest hubs ever cool to see it replicated.

[@Gornflyin]

you can 3d print metal alloys now. The Swiss supercar company, Koenigsegg 3d print the titanium exhaust for the rear of the car. I would guess their printer is HUGE money lol. You guys should also check out the spokes made out of, I think, dyneema. Used to make sails. Each end is metal, but the majority is fabric. I've only seen them used for high end MTB wheelsets though. The name is Berd Spokes. As soon as I saw them, I thought, these would be perfect for BMX. Light, simple, and shock absorbing without deforming.

[@Honey_Daddy]

Pivotal seat posts? Maybe pegs out of ABS? Brake levers? Pedals? Maybe get real risky with it and make a stem? I got a creality ender 3 max and it's like 300 bucks and sick. 500 is actually pretty expensive for a starter setup. I wouldn't use PLA for anything BMX related. I'd only use ABS.

[@shithead]

I made pegs out of black abs (or pvc, whatever it is called./ the stuff that doesn't shatter that they used to use for plumbing.) I put them over some cut off metal pegs. They were good for standing on, but that's about it. Any grinds would destroy them in a few minutes.

[@abrown387]

All you have to do is send the renderings to a cnc shop and send them funds!! Get it made!!!

[@JamesSeale2575]

That’s brilliant well done

[@lawrwncemitchell9955]

Matty is an Engineering Genius, he's built so much different stuff 😳👍💯

[@shithead]

lol not quite

[@jasonwaltrowski2315]

Those hubs are awesome Matty, I do 3d resin printing and I print small parts for plastic model cars, I wonder if you redid your hubs with putting some kind of metal insert inside where they got chewed up, probably gonna need a cnc machine for that but it would be cool, good job dude

[@vax6575]

That is the coolest looking rear hub I have ever seen, looks like a nuclear cooling stack. It would actually be pretty simplistic to make in metal with the right tools. I hope Matty does some research to make it happen.

[@brian92376]

You and Matty should try to recreate some of road bike party would be cool to see the process

[@Connor.ry228]

You guys should send the design to shapeways and they can 3D print in metal and other cool materials!

[@timjohnson943]

Try a making the drive side accept press fit metal ratchet ring for the driver to engage with. Could last longer that way with a larger support area similar to a spline drive insert for the driver to then bite onto metal

[@KillerStephen]

Matty, in Cura, check the box for generate supports. You can then print things that would need to hover without the rest of the part underneath. "Tree supports" work really well, and dont add a ton to the build time.

[@ddawg0863]

good for you matty, very nice job!

[@SKEC212]

Make a handlebar end cap that looks like the rubber button that you see on small 2 cycle gas engines, that primes the engine. Find a broken weed eater or blower and take the rubber push button off so you can see how it's made. And, then make it big enough to fit the handlebars.

[@brad2812]

Holy crap that is amazing. The idea itself, the design/engineering and thoughts behind why you used straight pull spokes and all else, and list goes on. I’m super impressed. Keep doing the damn things and who knows where this could take you

[@calimongoose8433]

Suggestion. Place threaded metal tube inside and machine a threaded pawl holder. Sort of a metal sleeve inside. That would fix the stripping problem. Best of luck.

[@greedyebk7146]

A rim, handlebars, pegs, brake lever, crank, forks, seat post, there's endless stuff you guys could 3D print out

[@bmxcoachtom4791]

That's freaking cool

[@buddeh_bikes]

The older Mavic Deemax wheels had the straight through spoke hub just like that one side of Mattys rear hub. I still rock mine and I have lots of extra spokes for it haha good job Matty!

[@tymattera8929]

That is awesome let’s see some pedals seat clamps and bar ends

[@Reloaded419]

WOW I am impressed with Matty more and more. What kind of filament did he use? Looking forward to some more 3d printing videos!

[@richardbently7236]

Good job Matty, you should try your hub out with the new spokes made out of string.

[@sawyerollanketo1231]

Matty could try and make his own custom break lever? It seems like it could be made within the 3d print space.

[@riddioughp]

No you can’t but you can print a mold and do a compression forged carbon part! Made my own for magura mt7

[@bawbup7763]

Nice work looking forward to MCV2

[@thebodybeatdownDiTi]

great job Matty..ill never understand 3D printing lol..its just so cool..

[@shithead]

What is there to understand? It just squirts out warm/malleable plastic layer by layer and then hardens

[@christspatriot]

Jeez luereez, Matty should have been an engineer!!

[@mike77-]

that would be awesome to see through hubs rims and spokes also a see through frame would be awesome and lite

[@MACISUS]

Grab yourself a de-burring tool off a,axon. Really helps to clean up some of those rough edges. Good on you for getting into 3D printing. Nice to have a budget printer with an enclosure. Means can print some filaments like abs or exotics. Personally I’m a fan of PETG over PLA for tougher parts. Keep at it and can’t wait to see where you get to next. Look into an airbrush kit for finishing your prints even fancier!

[@GregorySchier]

3d-printing a seat could be fun! And/or a seat post

[@unfinessable463]

Do a pair of handle bars !! A seat post would definitely hold up though!!

[@dannydavies388]

scott you have one cool brother!!!!!

[@jonlavigne3270]

This is really impressive to me.

[@bleepbloopblahp]

Awesome job. Printer is a good value reasonable quality unit but it needs dialling in. Do some calibration tests and then again when you change print material. Lots of resources online to help you get cleaner and stronger prints. Metal inserts might go a long way towards a reliable home built product. Metal rings inside and outside the hub cylinder and flanged tubes for the spokes. Experiment with different filaments. No need to destroy your nozzle with carbon fiber infused nylon straight away. PETG, ASA or polycarbonate are some interesting options to try. Your 3D model could be used to CNC mill or lathe from a chunk of metal too. Have a nice billet aluminum piece. Model might need some changes to use and obviously you'd need someones expensive machinery to do the job. Skill up that 3D modelling and you can have your designs manufactured in various ways.

[@LJdeatz01]

Sick work matty you should make your own signature grips and bar ends,or a plastic seat.

[@joshuabuckley7443]

Pedals, Pegs and Seats would be cool to see

[@markevans5306]

Be great to see a 3d seat or 3d bars if that's possible, but awesome work Matty that is incredible 3d printing and this is one of the best channels on youtube without doubt

[@Fausto_4841]

they could not make bars on that size dremel printer, but they probably wouldn't risk it. serious bmx guys will only run full chromoly or in some cases Ti frames, forks, and handlebars. Max printed a sprocket on Alf Mancuso's channel.

[@darvysimmons5730]

You need a CNC lathe with live tooling to make that hub out of any metal, or metal 3d print it, would be cool out of titanium powder, good job.

[@justinellis2936]

Custom bar ends and stem caps maybe Tire valve caps. You could do the channel symbol and make keychains

[@luukasrussell4114]

Very cool.

[@timothypuvogel5468]

WOW earliest I've been here 😎😎..I'll take your word for it Matt 😁😁😁 it's all Greek to me..great job Matt!!! Love all your videos Scotty.

[@DopeLobbies]

Matty and Scott, Search up the Simple Hub. it was the same exact way with being flangeless . i actually have two simple hubs, one on my bike and one sitting around. very old hub and i know you should know what it is. Very cool.

[@abelcook779]

Y'all should try 3d petals that would be sick

[@korspresley5650]

You guys should try making 3D printed Peg Covers...

[@stevencrosland581]

Make some olds school dice for dust caps and the things you used to get in cereal boxes for your spokes

[@delfco12]

If you have a 3d model of it you can absolutely get that part machined. Look for a CNC shop or even a KZbinr that may want to collaborate on it

[@glennthompson3642]

Great tech skills,would it be possible to make a set of levers,if they could be in different colours that would look cool and save weight.

[@riddioughp]

You could mold that! Check out forged carbon compression molding, print a mold and use a carbon chop strand kit and make one that would last years

[@kurtislavigne2354]

You fellas need to get that kid two c and c machines

[@JedKoll]

I saw they make fabric/composite string spokes for mountain bikes now. Might be a cool idea to combine the string spokes with your plastic hubs. Then you wouldn’t have metal on plastic.

[@Tropicool]

Some tripod footage of the crew with a nice angle would be cool and refreshing, while giving you a break from holding the camera! Just an idea.

[@jonahjohnson7663]

Change your printer nozzle to withstand metal filament and do some metal printing, Amazon is your best friend

[@matthewwayneday1688]

Matty should try and make some 3D printed pedals

[@owenjohncox6007]

That's is an amazing idea, can you do sprocket next time. We used polymer blend in injection moulding to make really hard plastic parts that can contain a high water pressure maybe that might help 🤔

[@shithead]

Sprockets need to be pretty hard or they won't last.

[@andycarpenter4999]

Damn I would love to get the stl. I’ve made peg sleeves on my resin printer and petg.

[@kentay5442]

mcv1 bar ends seem like a must

[@alexandersillan8139]

Matty Cranmer Versions/Visions is a cool name so you could always have MCV

[@SethRecords]

That’s insane you can 3D print aluminum too btw so you can definitely make that into a real hub

[@rambozo_fpv176]

That's a very well thought out design. Send the same model to get printed in titanium or aluminum. I think sculpteo does it as a service or connects you with service providers.

[@HaggardBikes]

You have to make puppy arms a legit fork plug!

[@Facelessman42001]

I think you did a great job. The rear hub looks similar to hubs that were made in the late 80s, or the 90s. I can't remember if they were made by TNT, or some other company, but they were RAD. Both sides of the hubs had the look of the driver side of your rear hub. I tried to find them on Google, but no luck. Anyways, Great Job Matt. You came up with a cool idea. I wish I could find the hubs I am talking about. I think you would Dig them. 😉

[@hjjc46]

Bar ends should be next up. Visible “MC” etching and all. Long term actual use even.

[@danieldevon1042]

if you want those in metal you could get them casted. look into the casting process as it uses a mould that melts plastic and leaves the molten metal. possibly something to look into

[@Fausto_4841]

if anyone wants to get into 3d printing, the Ender 3 is the best hobbyist printer, it's got a larger printing area than Matty's Dremel, and you can find them on sale for about 150$. this is the printer than the 3D pewpew goons use, most files are written for that printer.

[@likamuuk]

I think you could maybe keep the plastic for the next version, but for the engaging there would need to be one metal ring with teeth on the in and outside which is then put into the hub.. If the driver engages against the metal ring, the ring will put equal pressure on all of the plastic teeth. Also there's then not gonna be space for plastic to fall of and fly around in the hub

[@readybag2162]

Way cool!!

[@xpndblhero5170]

Matty should send them to that 3D metal printing place and reprint them in metal.....

[@nizzurtmontalgizzert3337]

Matty is a G

[@mikeoliver3254]

That is really cool I would ride a hub designed by Matty. 3D printing is a ton of fun you might want to get a ruby nozzle for your printer and print with the carbon fiber infused filaments, they are supposedly a lot stronger.