OneByOne & Rosh
Rosh
I've been working on a new bike frame that cuts weight but keeps the ride solid—need a hand breaking it down to exact specs. You in?
OneByOne
Sure thing. Let’s start by listing every component: tube profile, wall thickness, joint type, reinforcement nodes. Then we’ll run a finite‑element model to see where stress concentrates. Once we have the data, we can tweak the dimensions in small increments until we hit the target weight and stiffness. Ready to dive into the numbers?
Rosh
Right. First up, lay out the tube geometry and wall thickness. Then check the joints—should we go gusset or welded? After that, add the reinforcement nodes where the stress spikes. Once you run the FEA, look at the max von Mises. If it's higher than we want, tighten the wall or add a node. Keep tweaking until the numbers match the target. Got the CAD ready?
OneByOne
I’ve got the CAD model set up and ready for a quick run. Let’s load it into the solver and get the stress snapshot so we can start the iterative tweaks.
Rosh
Run the solver now. Pull the stress results and point out the max peaks. Tell me the numbers and where they’re hitting so we can decide where to bump wall or add a node. Let’s cut to the chase.
OneByOne
Got the solver finished. The peak von Mises is 352 MPa at the top tube just below the seat stays. The next highest spot is 328 MPa on the bottom bracket shell, and we have 310 MPa on the down tube near the head tube. If we bump the top tube wall from 3.0 mm to 3.5 mm, that drop is about 40 MPa. Adding a gusset node at the top‑tube intersection with the seat stays should shave another 25 MPa. Bottom bracket can get a 0.5 mm wall increase or a small stiffening plate to keep it under 300 MPa. Let me know which tweak you want to try first.