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CCWorks |
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Making dreams, reality. One bike at a time |
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Let’s build a Frame! |
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I have learned a lot over the years about frames and how they are put together. I don’t claim to be perfect and like everything else in the world there are a lot of different ways to do the same job. This is the way I do mine. If you don’t like the way I do mine then do yours different.
First thing you need to do is get your tubing. I have all ready been over why you use tubing over pipe and what the difference is. If you have not read it go here and read. For this frame we are going to be using 1 and 1/2 inch ERW.120 wall tubing for the backbone and the single down tube. The rear and lower tubes will be 1 inch ERW .120 wall tubing. Axle plates are cut from 1/4 inch plate steel. All welding is done with .35 wire through the MIG with carbon dioxide/argon mix for shielding gas. Welds are triple laced to insure solid penetration and thickness and will allow for smoothing if desired without resulting in a weak weld. If you get a frame from some one it should come in the raw to allow for inspection. If they wont send in the raw you might want to question why they don’t want it inspected in bare metal. I prefer mine to be shipped bare but I can arrange POR 15 or powder coat if you like.
We will be using one stick of 1 1/2 by 10 feet long and two sticks of 1 by 10 feet long. Jig table is set for 4 1/2 inch ground clearance, a front fork assembly 35 1/2 inch from center axle and 5 1/2 inches of trail. This particular frame is being produced for a customer up north who has been wanting to chop his bike for a while. After some discussion and throwing things around he has decided to go with a 3 1/2 – 4 inch stretch on the rear shaft and to go for a low seat height. The seat should be in the range of 18 inches high. Nice and low. He has chosen to use drag bars so there will be no stretch added to the backbone. A nice smooth hard-tail.
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