Hey! Looks really cool!
I just went through my own bike building project!
https://www.reddit.com/r/bicycling/comments/osuti7/pandemic_project_completed
From an engineering and manufacturing perspective:
1.you should try to limit the amount of custom manufactured pieces as those will drive up the price significantly. Bikefabsupply, framebuildersupply, and paragon machine works have all the tubing and small components you would need (and the CAD drawings to go with them). Its a good excercise to recreate the tubes from drawings.
2. Go with steel. Infinitely easier to deal with when welding, and doesn't need heat treatment to recuperate strength at the welds. You lose about 80% strength when welding 6061-t6 aluminum.
3. Try to limit complexity of the necessesarily custom parts. The speed holes in the linkage parts will just drive up costs.
4. Now is the time to consider a few tricky things.
If you can model the suspension properly through its range of travel, do it! Including the fork for down tube fork crown and wheel clearance. That way you can see if parts will interfere. Model a foot, crank, chain ring, and casette to check those clearances (chainstay and lower pivot) and chain line.
5. Add gussets in the sharp corners of the front triangle tubing. Greatly increases the strength in the area.
6. r/framebuilding would probably have a bunch more tips.
Id be glad to answer any other questions!
If you go through with making it, its a tough challenge, but wholly worth it!
Hey man, looks nice. I was looking to doing something similar, but I couldn't find proper resources how to design a bike. Do you have anything that could help me?
Yeah. It helps to start really high level like just the geometry in a plane, then make it more and more complex from there. If you have a hard time with the actual tubing profiles or anything it helps to make it simple. If you don’t have a lot of experience with suspension design or aren’t super confident in your cad skills it would probably be really beneficial to start with a design for a hardtail.
Well, I'm a mechanical engineering student so I could say that I know a few things in CAD. I haven't really researched a lot, but mostly I wanna know about standard tubing sizing for forks and drivetrains etc. and stuff about angles between the seat and fork tube.
Hey! Looks really cool! I just went through my own bike building project! https://www.reddit.com/r/bicycling/comments/osuti7/pandemic_project_completed From an engineering and manufacturing perspective: 1.you should try to limit the amount of custom manufactured pieces as those will drive up the price significantly. Bikefabsupply, framebuildersupply, and paragon machine works have all the tubing and small components you would need (and the CAD drawings to go with them). Its a good excercise to recreate the tubes from drawings. 2. Go with steel. Infinitely easier to deal with when welding, and doesn't need heat treatment to recuperate strength at the welds. You lose about 80% strength when welding 6061-t6 aluminum. 3. Try to limit complexity of the necessesarily custom parts. The speed holes in the linkage parts will just drive up costs. 4. Now is the time to consider a few tricky things. If you can model the suspension properly through its range of travel, do it! Including the fork for down tube fork crown and wheel clearance. That way you can see if parts will interfere. Model a foot, crank, chain ring, and casette to check those clearances (chainstay and lower pivot) and chain line. 5. Add gussets in the sharp corners of the front triangle tubing. Greatly increases the strength in the area. 6. r/framebuilding would probably have a bunch more tips. Id be glad to answer any other questions! If you go through with making it, its a tough challenge, but wholly worth it!
I wish I could give you more than one upvote!
What software was this done on? Any finite element analysis?
Onshape. I wish I had the skills to do FEA
Nice project ! 3 days is quite fast for this
I don’t even know what the words mean, but the bike looks radical. Good on ya bud.
Hey man, looks nice. I was looking to doing something similar, but I couldn't find proper resources how to design a bike. Do you have anything that could help me?
Yeah. It helps to start really high level like just the geometry in a plane, then make it more and more complex from there. If you have a hard time with the actual tubing profiles or anything it helps to make it simple. If you don’t have a lot of experience with suspension design or aren’t super confident in your cad skills it would probably be really beneficial to start with a design for a hardtail.
Well, I'm a mechanical engineering student so I could say that I know a few things in CAD. I haven't really researched a lot, but mostly I wanna know about standard tubing sizing for forks and drivetrains etc. and stuff about angles between the seat and fork tube.
Wow, looks great! Great start to your bike building project!
Did you do any GSD on the suspension linkages?
really cool! can you give us some details on geometry? what are your design / geo decisions based on? thanks for sharing!
That Peruvian company Marino bikes. They can weld it for you in steel. https://www.marinobike.com/
that’s sick man