kzfaq.info/get/bejne/mMd6fNucsbudaKs.html

Just hit 100 miles today. Going great!

Check the channel for audio corrected version

Glad you liked it!

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 😅

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

Ha, yeah my interests tend to swing from one direction to another. Thanks for checking it out and hope that tutorial was helpful (and still relevant)

Thanks for checking it out

Thanks, yeah I'm pretty stoked how it came out.

Thanks for the sub! The files are indeed public - thangs.com/designer/designbydave/3d-model/DBS%203D%20Printed%20Carbon%20Fiber%20Bicycle%20Frame-40231

Thanks so much! Hoping to work on more of this type stuff in the future.

@@designbydave ill look out for it. thanks

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.

Go for it!

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.

Thanks. Yes it's a lot of fun to ride and very satisfying!

Thanks for checking it out!

Yes, totally. Internally routed cables would be great. Perhaps a feature for the V2 if that ever happens

Thanks 🔥

Good idea!

You're welcome!

Yes copyright issues

Thanks! Yeah, unfortunately this is not a cheap DIY type project.

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.

Pretty sure where it's silent is because I muted background music due to false copyright claims.

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.

Thanks

@@designbydave same to all the v best munich germany

19 lbs. Could loose a pound or two by using expensive and light weight components but it's not really necessary for a bike like this.

I'm considering that

KZfaq muting music because of false copyright claim

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.

kzfaq.info/get/bejne/mMd6fNucsbudaKs.html

The bike is great thanks! I did go open source and built a second version. Check my channel for videos on that.

That's a great idea actually.

3M DP420

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.

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.

Soon. Working on revising the design. Check back in a few days.

@@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.

Most of the tubes are 1mm, but some are 1.5mm

I think it was something like 1200-1500 grams

Check my channel. I have a video specifically about this.

Frame about 2.6 lbs, total bike 19 lbs

Modified ender6

Yes, Ender-6 as you have found - kzfaq.info/get/bejne/pq-dZd2S18W4gWg.html

@@designbydave thanks mate im from latinamerica so my English is not very good.

Most of the tubes I already had, but you can find tubes on ebay (actually a great source.) They vary in diameter from about 0.5 inch to 2 inch

@@designbydave thank you! What weave pattern were they? Looks REALLY good! I’d love to implement a similar design strategy for a road bike!

@@TimeBlindRi Some are twill and some are 1x1. Twill typically has that more "carbon fiber-y" look and that's my usual preference.

@@designbydave thank you for the clarity!

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 OK, thanks a lot

Thanks so much. The tubes are table rolled carbon fiber

I updated the description of this video with the various links

Just something cheap and cool looking I found on eBay.

I don't think a project like this would be suitable to children of that age.

Due to false copyright flag. Check description for fixed version.

​@@designbydave thank you for responding

~1700 grams

@@designbydave Thanks

Yes

@@designbydave perfect I just ordered the ns (non sag) 420 for a rear dropout minor repair

19 pounds

@@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 :)

😱

Yes it was