Fixed Flying Tourbillon Model Mark 2

thingiverse

I added two new pieces for the main spring assembly. They are called Main Spring Lug 2 Bolt Hole v2 and New Frame B Bolt Hole v5. As you can see, there is a hole in the frame b shaft that's designed to tap an 8-32 thread, along with an angled recess in the main spring lug for a flat head 8-32 bolt that's half inch long. This keeps the spring from falling out when handling it. To prevent overtightening and damaging the Frame B piece, be careful not to pull the shaft apart. I timed my spring at 21 minutes and 30 seconds maxing out with the .006 shim stock around 12 feet long. For shim stock, I recommend using .006 thick and half inch wide. I got mine from Precisionbrand.com in a 25-foot roll, and it lasted me almost 12 feet. I did a test run and it ran for 10 minutes! Not maxing out the spring so it will run longer. Eighty clicks of the spring yielded a 10-minute and 21-second run time. The new winder tool is up to the task. I use .125 diameter by half inch long dowel pins, which I purchased from McMasterCarr.com item # 90145A471 for $8.44 for 50 pieces. I also uploaded an alternate base replacement with a bit more style. My first test went extremely well. With 15 clicks on the spring it ran for one minute and 57 seconds. I think going with thinner shim stock would be better as .010 is pretty stiff, and this model doesn't need much pressure to run. I initially used 48 inches of shim stock but think the same amount but thinner should work better and allow you to wind it further. I've updated the New Base Replacement, New Main Spring, Main Spring Lug, and Winder tool/base. I found that the winder pins were extremely weak so I updated them with holes to press in one-eighth inch metal pins, and updated the main spring with the appropriate hole size. I also changed the main spring lug to a better attachment slot similar to the main spring housing. To bend the shim stock to a 90-degree angle without snapping it, heat the end to reduce the temper of the metal. This model uses two 608 bearings for stability and a main spring made with .010 x .500 shim stock. I also designed a winding tool with the new spring housing being more enclosed. I included a 608 bearing test print. Print this and fine-tune the fit instead of having to reprint all the pieces and waste time. The fit should be snug but not press fit or sloppy. The most difficult item to print is the base and supports. Be sure to have your support settings fine-tuned to remove it without damaging the spring locking fins. My settings from Cura were as listed below. Placement: Touching Build Plate Support Overhang Angle: 50 Pattern: Zig Zag Density: 20% Support Z Distance: 0.2 Support X/Y Distance: 1.0 I printed these items as a solid 100% infill. The rest were 20%. Main spring lug Balancewheel Balancewheel Spring 12T Sprocket Gear 60T ID Gear This requires metal pins for the pivot points. I used #43 dill bits (.089) and cut the shanks off to length. The lengths I cut were 19mm, two at 16.65mm, and one at 6.55mm. https://youtu.be/kZ-iBDkrOng