With one evening to go the final frame parts arrived for the frame, the replacement track dropouts and the top eyes for the seat stays.

So with the remenance of flu still leaving me a little shakey I layered up and headed out across the garden to my workshop in sub zero temperatures. To get myself in the mood i decided to get the easiest task outo of the way, silver brazing the top eyes onto the seat stays, the picture below is before clean up:

After this is set to work on the track dropouts. The first task was to cut the chain stays to length, after this was done slots had to be cut at the correct angle into the chainstays before clamping the dropouts into the jig and butting the chainstays against them.

Now the dropouts were bronze brazed onto the chainstays and the gap between the drop out and the tube filled in with more bronze, picture again before clean up:

A quick cleanup of the evenings works was performed before calling it a night. Despite looking like very little work the above tasks took over 4 hours after which the flu tablets had worn off along with my motivation. Brazing produces some fairly harmful fumes so the task has to be done where there is good ventilation, in my case with the workshop doors wide open, not idea when it is minus 2 and you are not well.
At this point the frame is in the following stage of the build:

This picture is a little missleading, the chainstays have not yet been brazed into the bottom bracket, i have just inserted them for effect! The task of brazing them in is actually the simplest task left to perform on the bike but it does require very accuratly setting up the jig to make sure that the bottom bracket has the correct drop, the OLD is between 120 & 123mm and that whilst this is being done the top tube is parallel to the table top. Soemthing that i was not in the right frame of mind to do properly.
I estimate that there is around another 12 hours work left on the frame and this will have to wait until after a hiatus of several weeks.
No comments:
Post a Comment