I would love to get the files. Please consider getting sponsors with carbon tube manufactures and put their links also. It will be like carbon frame bike DIY set.
Thanks so much! Well, you can help with that, Like/subscribe/comment/share, you know, all that stuff youtube creators are constantly bugging you about 😅
Hi ! I have watched all of your 3d print bicycle videos. As i understand you get carbon body pipes readily from somewhere (It should be hard to print them in that size and in that hardness with printer) but you printed joint sections with your Ender 6 by using carbon fiber additive filament. An idea, maybe you can build your own body shape with 6061 aluminum (You can manufacture it in industry with your own mould designed in Solid Works which would be hard for a one for carbon body) and samely joint parts from carbon fiber filament. As i'm mechanical engineer, i also deal with designing bicycles in Solid Works but haven't manufacture them yet. Maybe one day i gonna try. Your videos are shared in biggest Bicycle Forum in Turkey and we watched. Very nice job anyhow. Greetings from Turkey...
Thanks for checking it out. Yes you could use aluminum for the tubes but that might require a bit different design of the lugs and/or different tube dimensions then the carbon tubes used
Thanks for the sub! The files are indeed public - thangs.com/designer/designbydave/3d-model/DBS%203D%20Printed%20Carbon%20Fiber%20Bicycle%20Frame-40231
Very Impressive. Are the lugs and dropouts holding up after 2 or more years. The version of the video that I watched lost audio every now and again ....did you say that you 3d printed the dropouts .I have made dropouts from carbon layups but thought that the carbon 3d printed material would not be strong enough
Brushless inrunner motors have rotors usually winded in a couple of layers of carbonfiber. That´s so, that the glue-stuck magnets don´t detach under the centrifugal forces... You could make the lugs 1cm longer (where the holes for the carbon-tubes are), put epoxy on the prolongment, and then wind carbonfiber around it. It would stiffen the 3D-prints exactly where the highest lever-forces are applied, and so, get a higher longevity...
I'm highly skeptical that there is any carbon fiber in an electric motor. Wrapping the lugs with additional composite material is unnecessary as the material IS the extra reinforcement.
Brother this was so cool but it was literally so jarring to get perfect audio in the beginning, and then to jump to 2006 youtube audio was crazy! Brother please the video would be so fucking good if the audio didn't cut in and out, like i wish i could have heard about the project but I'm not what was going on.
Great idea, Great concept and a great video in general, except for the huge dips in sound (probably a copyright issue i presume) which made the whole video almost unwatchable. actualy switched off at 8:50.
That's really cool! I think this idea has a lot of potential I've been thinking of building a bike frame myself; the method to 3d-print the connections is a brilliant idea. Do you think it would be possible to further make the with carbon fiber tube and 3d-printed parts, such as the fork and handle bar? I was also wandering about how much the total cost of the frame was, for the carbon fiber tubes along with the carbon fiber filament?
Thanks for checking it out. Anything is possible, but I think to print the tubes, fork and handlebar, and to make them strong enough would be prohibitively heavy/bulky/clunky. Plus, why re-invent the wheel when those components are readily available and cheap. Cost brakedown towards the end of the video. Some of the tubes I already had, so the cost of those are not factored in. If I had to source them it would be an additional $150 or so.
Fun project, to be frank the video editing could be better in the fast forward parts you should use a small background song like from the RU-vid library, it makes it nicer to watch than just silence...😅😅
Dude 🤯. Awesome. Is there a way of changing the lug size and dimensions to make a gravel bike. Wouldn't changing some of the angles on the lugs help in allowing for size differences? Also wouldn't it help to use lugs printed in carbon but then wrapped with the stuff used for making bamboo bikes (use less 3d print material and more of the carbon wrap stuff)?
It could be converted to a gravel bike, with the main change needing to be converting it to disc brake. The angles that the tubes meet the lugs depends on the frame size, so all of the parts would need to be re-designed from scratch to make different size frames. These are changes that I may get around to working on depending on other projects. I'm not sure if wrapping the lugs with additional composite materials would make any difference or be necessary. So far (over 100 total miles) and the parts are holding up just fine as is. Structural load and fatigue testing would be required to determine if additional reinforcement is necessary.
Because that was not the scope of the project. The design intent was to build a bike frame where the only major tool required is a 3D printer. To make molds and composite parts would require significantly more design in the molds themselves as well as requiring a shop to handle and process the composite materials.
Not sure but I wouldn't be too excited about that. The extra weight of a motor and battery would add quite a bit of load. I would build it a bit "beefier" were I planning to add a motor.
I love it! What's the tolerances one this project to keep in mind? How did you find a seattube with the appropriate inside diameter for the seatpost? And could a tube with 25mm outside diameter be inserted in a tube with a 25mm inside diameter? We would be interested in the plans, I would like to build one just like this, thanks for the ideas!
Most tolerances are quite loose because the nature of 3D printing and material shrinkage means you can't hold very tight tolerances anyway. There is a lot of "slop" in the assembly but that is good because you want some room for the epoxy. Can't have a press fit or the epoxy will get squeezed out. The precise alignment comes from the assembly jig. Sorry, I didn't cover the seat post. I ended up having to add thickness to the seat post in order to get a proper fit. I purchased a tube that was close in ID, but ended up not being close enough. So I 3D printed some spacer sleeves with a 0.3mm nozzle and glued them to the seat post to make up the thickness. Seems to have worked great. Normally the seat tube ID is undersized and then reamed to fit. That would be difficult (impossible?) to accomplish with a carbon tube. Sleeving tubing can get tricky. No, you will not be able to sleeve an OD 25mm tube with an ID 25mm tube. That is, if those are the actual dimensions. Often times with tubing the stated size is a nominal size, but the ID or OD will be over or under just enough to allow for sleeving. This probably isn't going to be the case with most carbon tubing unless the tube sized were specifically made with sleeving in mind. I just started work on a version 1.0 of this design intended for open source public release. Changes include: incorporate standard tubing sizes, tweaks to lugs to make them stronger and add a bit of stiffness, re-designed head tube, and eventually different size frames.
Good eye. There is but that was from repeated assembly, disassembly, test fits etc. It's held together with the epoxy and shouldn't be a structural issue at that location.
hi, sorry already you made the project and I would like to do it. Which material do you think is best? the pa12 cf 20/25 or the one you used pc cf? the best would be peek but it is very expensive. Thanks in advance
Hey, I'm not sure. You'd have to compare the technical data sheets for the materials. Personally, I don't like the print quality I get with nylon so I try to avoid it.
@@designbydave awesome! Will do! Been thinking about this for a while and… well you saved me about 200hrs of cad and lay up work my man (BTW I’m 5’10”)😂 But in all seriousness, thank you! Keep up the awesome work!
@@DerekMantei you'll likely need a medium size, so this one will be too small for you. Next step after finalizing and releasing the small will be to do a medium and large. I think that's probably going to require basically a complete redesign from scratch for each though.
@@designbydave Yo already have 1 sub more but thank you for answering. Have you considered using any Innegra composite for future proyects? PD: Nice and usefull channel bro :)
