My swing dropout design

[shiggy]

Going to machine a set of swing dropouts for my Alfine equipped, long and low roadster that Steve G has helped me start. Will allow ~15mm of adjustment with ~4mm of axle height change. Will use chain ring bolts with the long nuts to support the plates. Use a large washer on the inside of the bottom pivot to increase the clamping surface area and recessed into the dropout.

[Jason Musgrave]

Reminds me of these from Black Cat Bicycles:

[shiggy]

Reminds me of these from Black Cat Bicycles:

Yes, inspired by the Black Cat. I have admired it for a while, though I did not look at it again when I started drawing mine. Just grabbed the disc spec and fit it to my frame drawing.

[Eric Estlund]

Shig showed me the drawing a couple of days ago- I like that its a tab design. I'm excited to see what the first pair looks like!

[Zimmermanbicycle]

Looks great Shiggy,
I've been thinking about doing something similar for these commuter bikes I've been building.
Please post pics when you get them done.
-Eric Z

[steve garro]

Going to machine a set of swing dropouts for my Alfine equipped, long and low roadster that Steve G has helped me start. Will allow ~15mm of adjustment with ~4mm of axle height change. Will use chain ring bolts with the long nuts to support the plates. Use a large washer on the inside of the bottom pivot to increase the clamping surface area and recessed into the dropout.

my dos centavos: make the tabs longer, bigger & rounded - more real estate to attach stays & it will allow for flexibility when building different sizes, esp. smaller rear triangles. looks cool. get a bunch! Steve.

[shiggy]

my dos centavos: make the tabs longer, bigger & rounded - more real estate to attach stays & it will allow for flexibility when building different sizes, esp. smaller rear triangles. looks cool. get a bunch! Steve.

Good thoughts for them being more versatile as a stock item. These will a one-off. If anyone wants to make more I will gladly share my drawing (PDF format). Just ask that I get some of the end product for personal use.

[Chauncey Matthews]

You probably have already, but just in case, you should have a look at the Vulture swingers too.