Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
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anvil used to use dual cones, lots of people do. However, the puck system that Anvil uses on the lower end of the head tube is very nice, it allows much easier setting of the lower end of the head tube. The other issue with only having cones is at the seat tube. With a cone, you should have a round seat tube at the top. However, that's not possible with some lugs, which have a shoulder at the top. I have removed the shoulder on one lug, it was a pain. I have a fitting on my jig which is a sleeve on a 3/4" shaft. The sleeve fits down into the seat tube. So I have to make a different one for each tubing size I use.
I cut my tubes on the lathe, that is a lot better than most other methods.