This channel doesn't get the love it deserves

@designbydave

2 жыл бұрын

Thanks so much!

Amazing work, Dave! Really nice! You've successfully designed and built a hybrid 3D printed/Composite bike. I don't know if I've seen anyone do this yet.

@sket123flamez7

2 жыл бұрын

there is a couple whos done it

Awesome cannot wait to see the finished product. Greets from Melbourne Australia

@designbydave

2 жыл бұрын

Thanks so much! It up - kzread.info/dash/bejne/Z4ppyNaPf7e0l6Q.html

I saw carbon premade tubes and thinking of making myself and found this great video.

@designbydave

2 жыл бұрын

best of luck! Thanks for checking out the video

适量把3D打印件的厚度和密度减少（相当于用3d打印材料作为填充），然后用碳布混合树脂糊在3D打印件的表面，这样做会不会强度更高呢？又或者可以使用水溶性3D打印材料，这样甚至可以把内部填充去除🤔

This was amazing! Thanks for sharing! KZread definitely needs to promote this kind of channels and creatos instead of the so-called influencers! This was amazing

@designbydave

8 ай бұрын

Thanks for your kind words

Fantastic!!!

Great stuff! I have been looking for ways to build bicycle frames without welding/machining and complex carbon lay-ups, and this is it! Thanks for sharing your experiences, really helpfull!

@designbydave

2 жыл бұрын

Thanks for checking it out. Let me know if you have any questions. Also, the files are now available on thangs.com

@tttstam

2 жыл бұрын

@@designbydave Did you get some more mileage on the bike since you built it? I am sure there are a lot of people interested in how it is holding up, at least I am ;)

@designbydave

2 жыл бұрын

@@tttstam I put about 200 miles on this frame before retiring it and upgrading to the new design. I have about 100 miles on the new one. Both so no signs of failure. See my instagram - instagram.com/p/CYu2XbVK2np/

Absolutely love it. Makes me wonder could I use 3d printed parts with more traditional composite manufacturing processes, might need to get a printer myself :D

@designbydave

2 жыл бұрын

Thanks! Yes, there are so many applications for 3D printed parts with composite manufacturing. Molds, plugs, water-soluable mandrels, etc. 3D printing really opens many doors.

I was hoping to see a little more about how it rode. Please keep us updated on strength and ride quality.

@designbydave

2 жыл бұрын

I'm working on that video now!

watch out if u bond carbon fiber to metal can corrode the metal u have to put thin layer of fiber glass between metal and carbon fiber

@designbydave

2 жыл бұрын

Galvanic corrosion isn't nearly as big a deal as the internet seems to think it is. Probably quite a lot more important for say, aircraft components, but not here. Not all metals will corrode with carbon fiber. It's mainly aluminum that can be an issue. There are many ways to insulate the carbon from aluminum, a thin layer of fiberglass is one. Usually though, a thick layer of adhesive like I use here is sufficient. Also, if the aluminum is anodized then the issue is significantly reduced. Also, also, the 3D printed material I'm using has only 20% chopped carbon fibers (by volume) compared to more like 60% with traditional carbon fiber laminates, so significantly reduced carbon to cause corrosion. The only aluminum parts being bonded to carbon here are the bottom bracket and the dropouts.

cool build

@designbydave

2 жыл бұрын

Thanks Mark!

Valeu!

@designbydave

Жыл бұрын

Thank you so much!

top bike nice very beutifull

@designbydave

Жыл бұрын

Thanks ✌️

Great job! I've been late to the series, however seen them all and enjoyed them. Have you considered CF reinforced Nylon filament? How would it compare to CF PC you used? And also if it were possible (more expensive, higher temperatures and annealing) would you use CF PEEK?

@designbydave

2 жыл бұрын

3DXTech has a bunch of carbon fiber reinforced materials, so it looks like you can get a nylon material that has similar properties. I wanted to try PC. I haven't looked into PEEK until now. It looks to be very high performing indeed but super high print temps and the cost!!!

this turned out really amazing! i just came from the 100 mile review, so i know this held up. my question is, would skinning the printed parts with carbon fiber fabric improve the strength? or would that be purely aesthetic?

Beautiful. Very impressive. How did you align the headtube when gluing?

@designbydave

2 жыл бұрын

It sort of "self aligned." I got lucky that it worked out. The new design requires additional alignment though.

@theamateurbunch5006

2 жыл бұрын

I used a flat surface to align the front triangle and then glued the rear in a jig. It was almost the same jig as yours. A lot more crude version though. But it was funny to see that we had many of the same ideas.

Amazing work, but will those 3D printed joints be strong enough to hold you and resist to bumps in the road? Are you going to perform any stress test before riding it?

@designbydave

2 жыл бұрын

Thanks! Last part of the series should be up tomorrow...

Bike looks awsome what type or make of epoxy were you using to put the pieces together?

@designbydave

11 ай бұрын

3M DP420

Really stunning project ! I was planing to build tubular motorcycle sub frame, so the frame under the seat, with the same technique you build your bicycle, but was ( and probably still am ! ) afraid that it won't hold my weight or will crack at the first bump in the road ! Do you have any recommandation about the carbon pipes size thickness ? Thanks in advance.

@designbydave

2 жыл бұрын

I don't have any experience with motorcycles but I would assume the structure needs to be quite a bit stronger then what I've built. All of my tubes are around 1mm wall thickness but I'd suspect you'd want at least 1.5 or 2mm.

@coxbow

2 жыл бұрын

@@designbydave thanks for your answer ;-)

What was the diameter for your bottom bracket?

@designbydave

2 жыл бұрын

Which diameter are you looking for?

How much do the carbon tubes and roda cost where you live? Tks again :)

@designbydave

2 жыл бұрын

Ordered from eBay, sourced from China. They range from around $20 to $50

@xpim3d

2 жыл бұрын

@@designbydave wow, that’s cheap! :D Tks :)

Really curious regarding the carbon printed lugs, is it strong enough?

@designbydave

Жыл бұрын

Yes. I put 200 miles on the first frame and another 280 on the second

Hey David, You made a really great job ! I often look at this video haha I just have a recommandation for you, I know 3M Epoxy 420 is really good for metal to carbon. But when you look at the guide from 3M, they say to use 8410 or 6310 for PC to carbonnfiber. What is your thoughts about it as you took 420 for everything ? Thank you !

@designbydave

2 жыл бұрын

I know bike manufacturers use DP 420 for carbon-to-carbon bonding and not just carbon-to-metal, so should be good there. Also, the polycarbonate material I'm using is at least 20% carbon. Having said that, I haven't heard of those adhesives so worth looking it thanks. The bike is holding up just fine with all 420 though.

@dorianvincent2101

2 жыл бұрын

@@designbydave If I try that before you when I will open my Channel about the project, I will let you know! I would like to compare every bonding and material to see What is the best for performance! ;) But I am really happy that your combination work that well!! I showed your projects to a guy that comes everyday at work with his carbon bike je really liked it!

@designbydave

2 жыл бұрын

@@dorianvincent2101 Sounds great. Be sure to drop a link when you get some videos up.

@dorianvincent2101

2 жыл бұрын

@@designbydave it’s maybe going to be in French but I will obviously do real translation for the subtitles! Will let you know when it’s done

A respirator or at least some sort of mask should be used when sanding carbon fiber parts, the dust can be particularly harmful to the lungs

@designbydave

Жыл бұрын

Thanks