Designed a few parts in Freecad and had them printed in stainless.
Wishbone goals:
-remake Strawberry wishbone for allroad/CX tires
-plug style brazed in for a seamless transition
-5/8” top to 1/2” bottom stay
Dropouts:
-use front flat mount standard in rear for easier adjustment and smaller brake bosses
-integrate rear boss into dropout for ease of fabrication
-eliminate syntace pinch bolt (set screw instead) so seatstays can both be set on rear of dropout
-keep dropouts small and outer surfaces flat or convex to easily polish some of the printed texture away (used belt sander and polishing wheel for 15-20min)
So far so good, just a few braze ons left for cable and fenders. Had to come up with a hanger design as well that is currently printed in 316 as well. Going to print/machine a non hangered insert since this will be a SS CX bike.
Faux seatmast with a short seatpost inserted up top, we’ll see how that works.
It fits a smoothish 40 fine (pictured). I brazed a fender boss in this time on the backside, but already redesigned the file to include a hidden internal boss that can be drilled out and tapped on the underside of the arch. Also made the plug length a bit longer.
Hey, no problems yet. I’ve used the same brake mount position on a couple frames now but those were with PMW dropouts. A few friends have been using it too with no problems. Don’t remember the math, but the mounts are in a few mm from the axle end compared to front axle. Smaller mounts are a little easier to get right with a cordless drill instead of a big old mill.
