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xrayspex
Brommers
Well, frame 3 is essentially finished. Frame 3 is going to be Di2, so I don't need cable stops, but since it's going to be Di2 internal I do need cable entry ports. I could just drill a hole and bodge a Di2 grommet in there, but the Columbus Life and Spirit tubes I'm using having very thin walls so I decided I'd add a stainless reinforcement plate and then bodge a Di2 grommet in there. So I made up some reinforcement plates from some 18 gauge 316L stainless I just happened to have with me using a hacksaw, drill and some files:
Here's the one on the bottom of the chainstay, brazed into place with some silver. It's looking rather matte because Geoff the Shotblasting Pixie did his magic and cleaned off the excess silver. I'll polish it to a mirror finish before painting the frame.
Another Di2 port on the seat tube, together with the FD mount and some bottle cage bosses.
I also added an internal brake line for the rear brake, which as ever was a total PITA.
The little embellishment/reinforcement plate next to the head tube was a particular PITA as the end lifted up while I was brazing it in place leaving a gap I had to try and plug using silver. Given that silver when molten has roughly the same viscosity as water, that's not easy. Just about managed it in the end, and while it looks a bit of a mess, it'll clean up fine.
And that's it for now. After Geoff the Shotblasting Pixie had worked his magic once again, Frame #3 looked like this:
I still need to cut down the top of the headtube, ream and face the headtube, cut down the seat tube to the top of the lug, ream the seat tube, bond in a shim to take it down to 27.2mm, file off the excess braze and polish it before painting, but these are all jobs I can do at home so for the moment it's in the back of the car while I start on Frame #4.
Frame #4 is a fillet-brazed, mini-V braked road bike using a Ritchey canti cross fork. It's to replace my former Basel Bike (PlanetX Pro Carbon, Ritchey Superlogic, SRAM Force, Quarq Riken) which @Cycliste left to be stolen in the communal bike store in her block of flats. More to follow.