Project started December 2020,
Real version here
Modeling the Panhead motor here

This bike will have a hydraulic drumbrake in the front, and I am making a hidden
master cylinder & reservoir that will be operated by twisting the left grip. Quite a puzzle!

 
 
 
 

24 July 2023: Further tweaked the tank design, added footclutch and am working on an internal hydrau;lic brake handle in the left grip... 6 March 2023: I have narrowed rear of the tanks 1" on each side, creating more of a wedge shape. Also added top motormount with coil and plugwires and a new velocity stack Also new colour and tank graphics! 20 January 2023 Reshaped the gap between the tanks and added a recessed cover that flows nicely between the shapes of dash and frame. Added adjustable mounts for the rear fender. Also changed the dash a bit and ofcourse changed the color again... 26 December 2022 Changed rear fender to "as built" and changed color to red 11 July 2022 Added details to oiltank and generator, changed color to turquise 16 May 2022 I have been figuring out all the parts of the oiltank so I can get them lasercut. It will resemble the stock horseshoe but follow the narrowed frame and have internal oillines and oilfilter, and fit the most commonly available batterysize so replacement batteries will always be easy to find. I also added the ignition coil and worked on the gaps between dashboard and fueltank. And changed the color... 9 March 2022 While adding more and more detail, I also changed the color. Again. 31 January 2022 I changed the handlebars and seat, added the tanklogo's and omce again tried a different color. This one is called Ginger Bronze, the wheels are still Light Ivory 15 January 2022 I added a sissybar and some large radius exhausts, trying to avoid the squeezed bit between engine and frame. I also tried a different color. This one is called Catalina, the wheels are Light Ivory 8 January 2022 I added a short springer and a hydraulic front drumbrake, as I also did on the real bike. This time I tried a set of 3,5 gallon fueltanks with an older model dash. The advantage of these would be that I can hide the mastercylinder for the front brake between them. I also added a narrowed horseshoe oiltank that follows the modified frametubes under the seat. 24 October 2021 This is about where I am at with the real bike now, Panhead motor installed, transmission rebuilt with oldstyle housing and short mainshaft, primary belt lined up and inner primary installed. One of the next projects will be a horseshoe oiltank that follows the modified frametubes, the CAD model will come in handy for making that. 30 July 2021 Well, as you all know by now, I bought a 1960 Panhead engine so I am busy putting that in CAD for this project. I made a separate page where you can follow that. The Shovelhead in this project has been replaced with the half finished Panhead so that I can start figuring out the alignment of the primary belt. Also I did not like the lines of the seat area in this frame so I am going to modify the frame so it will look like it does in these renderings. The Primo primary belt has also been added. 31 May 2021 There hasn't been a lot of time for my own projects lately but I managed to put a shovel engine in here and a rear chain. I also added a wavebar and Cole Foster grips, so the virtual bike is now more or less the same as the real one. 20 March 2021 I added Wheels and fork, the rear wheel is the one I will actually be using, the front forks and wheel are ones I have lying around in my shed, but not necesarily what I will be using. I might try some long narrow forks, or a springer or girder next time. That is one of the advantages of building in CAD first, I can try various combinations without buying the parts! 26 February 2021: The frame with all the castings is now completely in CAD, and I have put the rear hub and brake assembly in place, centering the hub in the frame. I also added the 4-speed transmission. Next I will add the chain and rear wheel and see if I can get it all to line up nicely! 8 February 2021: The front half of the frame (from a 1974 Shovelhead) has now been laserscanned and then CAD modeled. The hardtail part only scanned sofar. Modeling all the castings takes a lot of time! I can already see that I will need to do some modifications in the seat area.... The CAD model of the neck casting is now for sale at www.dbbpshop.com 9 January 2021: The front half of the frame is from a 1974 Shovelhead, I started with laserscanning and then CAD modeling the neck casting. For scanning I use an Einscan Pro Plus 2X mounted on a tripod for more stability. All the postprocessing and CAD modeling was done with PTC CREO Parametric 7.0 From the workshop manual I have a blueprint of the stock frame, which I am also using for reference. Tubes are easy in CAD but the castings are quite complicated because of the more organic shapes



 
 
 
 



 

I have finished the hub and drumbrake, this will help me figure out how to get that tire in there while keeping the wheel centered; I really don't like offset rims.

 

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