What we want to do now is to crib and shim-up the upper frame assembly into its correct attitude and to mark the location in each down tube where the backbone will eventually penetrate each tube near the steering neck location.ĭuane is a lifelong rider, fabricator and all around Biker par excellence who understands what builders need to keep their project moving forward. Dick’s basic concept was to take the geometry from one of his modified stockers and then transfer that to a new line of production frames. In the first stage we need to make the two bends where the down-tubes make their transition into the bottom rails as shown in Figure 6.
Last Drivers HARRY POTTER JA VIISASTEN KIVI EPUB DOWNLOAD I have spent almost my entire life dealing with precision drawings, machining, and fabrication but there comes a time when you have to leave the math behind and follow your instincts and this is that indefinable ‘something’ that separates humans from computers and provides the distinction between mass-produced bikes and custom built choppers. The seat post will fit inside the box formed by the four lines.
The time now is On a chopper frame the raised tranny mod was a little more involved than what you’d do on a flat-tracker or hill-climber and involved ‘chopping’ the lower rails right behind the rear tranny mount and then bending the wishbones upwards until they aligned with the stock backbone tube. If the angle of your initial notch is little off it can be corrected very easily with a grinder when you dress up the cut.
Unfortunately Allen never really went into full production. What we want to do initially is to create a set of rails that have a 27 inch piece of straight tube, a forty degree bend, another section of straight tube four inches long, and another forty degree bend ending up in a long straight section that runs to the end of the seven foot piece of tubing we started with for each side of the bike as seen in Figure 6. If everything is level and plumb you can find virtually any angle, distance, offset, or measured point anywhere on the frame just by using a level and a measuring tape. The Chopper Builders Handbook | MIG Welding Forum Send a private message to bonneville bones. I did find almost all of my original notes and sketches on Dick’s frame concept. Adjuster blocks like chhopper sure do look great but they also add about six pounds of weight to a typical frame. The Chopper Builders Handbook CD’s have now become almost the defacto standard for independent builders who intend on building custom Frames, Springers, Leafers or Girder forks.
Last Drivers CA IPCC RTP MAY 2014 PDF Dick Allen Blueprint Frames Before we get back on track and start on the down tube notches it may be important to reemphasize the importance of building a welding jig one piece at a time while we’re also building our first frame. Take note that none of our control lines actually use the centerline of the tubing as references. This particular frame is a single down-tube version but the principal is the same. Moving ahead about a million years there is ahndbook a link made between any fabricator and the parts that he or she creates.
For the purposes of this article we’ll be installing the axle plates first. The picture below shows a Leafer top tree and the top tree from one of our Old School Springers. It’s dated April Consider yourself either very good or very lucky if your frame is within one-eighth of an inch square and plumb measured in every conceivable direction when its finally welded up prior to installation of the steering neck and axle plates which brings us to a problem of sequencing the fabrication. These frames represent the accumulated artistic expression of them all and the design has its roots in the classic Choppers of the sixties and seventies. You’ll no doubt realize that I deliberately didn’t say that they chop er to be installed in alignment with the frame itself because they don’t, and in some cases shouldn’t be. If you don’t have a jig however you’ll have to improvise some way of attaching the neck-piece onto some type of long rod that you can use for alignment. Do you have the will and drive to see it through to the finish? My notes indicated that the material was. The Chopper Builders Handbook came about as much by accident as by.