You are reading a single comment by @Mikenetic and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@Mikenetic
Friday was pretty hectic in the workshop, helping the guys prepare for the Spin London Xmas bash.
However, I did manage to complete the final bits of bronze brazing. I've now got the chain stay bridge in and tidied up, and the seat post clamp attached.
Brake bridge tidied up. The shape I went for mean the mitres help to hold them in place under load, so there's not much need to lay a fillet, but I like the flowing look.
The chain stay bridge is simply a piece of tubing with a water bottle boss brazed onto it. I've positioned it so that I should get a nice radius on the mudguards, closely tracking the tyre.
Seat post clamp. There's quite a mass of metal here, so you want to get the clamp nice and heated and not spend much time with the torch on the tube. You're trying to use the heat to pull the braze into the space between the surfaces, and then fillet the edges so you can sand back for a nice transition.
Next week I should be able to add the bottle bosses, braze-ons and fill any minor imperfections. That'll be done with silver rod, as it flows better than bronze and needs a lower temperature. Ideal for thinner sections of the centre of tubes, and for components without so much structural loading.
Then, with any luck it'll be the head badge, head tube, seat tube and BB prep and a final check and polish.