I turned an aluminium bush as you recommend and it works perfectly. The hole bored accurately and a very close fit on the spindle and the bush shoulder is turned perfectly true to the the hole. The 31.75mm for the grind wheel is turned very slightly slack to allow the grind wheel to register on the face of the bush. So the register for true running is the shoulder not the inside of the wheel. Thank you,
El mejor video que he visto y explicado como un maestro de como afilar brocas de taladros, por fin voy a aprender como afilar mis maltratadas brocas. Muchas gracias
Brilliant! So the spring/weight puts energy into the hair spring which causes the pallet to oscillate back and forth with weight causing the escapement wheel to push against the pallet and hold it in place until the energy in the hair spring can push the pallet out of the way of the escapement wheel. The mass on the balance wheel (when actually balanced) then regulates the rate of the motion and, thus, the accuracy. I love it!
Excellent video! The epoxy wire on the side of the wheel is a genius solution! Although Americans are very afraid of modifying tools, and they get nervous about making their own modifications that require a wildly unique solution. A couple notes: 1.) The inside flange washer must be the same size as the outside flange washer, or at least very close in O.D. diameter, otherwise you risk cracking the grinding wheel. 2.) Use a block of wood and tap around the periphery very gently to align and center the grinding wheel, while it's only hand tight, before torquing down the arbor nuts. 3.) A 1/4" impact driver can easily tighten the grinding nuts on the bench grinder threaded arbor, one click or two clicks of your battery powered screw impact driver, or as close to 10 ft lbs of torque (as recommended by Norton official chart for 1/2" diameter thread) or 15 ft lbs for 5/8" diameter shaft. Hold the opposite side shaft, not the grinding wheels, when tightening, to maintain alignment. 4.) If your paper discs are not in good condition, then make new ones, or throw the whole grinding wheel away. 6.) There is a balancing system available in the U.S., but it's $95 per side, which apparently removes 100% of the vibration, and it's called "Oneway 2272" grinding wheel alignment system. 7.) People do say that the easiest way to balance a bench grinder is merely to tighten one side, then dress that side with your diamond dresser, then on the opposite side, mount, and then dismount and re-mount the grinding wheel over and over, turning it in small increments. Test, and repeat, until smooth. This process apparently removes about 90% of the vibration.
Thank you for such valuable advice! 👍 Regarding point 7, my remark. After leveling only with a diamond pencil, vibration will appear when the rotation slows down. The reason is the rotation of the disk around the center of gravity, which does not coincide with the geometric center. The solution for this method is to screw the sharpener to a hard steel table or a hard steel stand screwed into the wall. As a last resort, put the sharpener on a hard stone floor, step on the body with your foot with all your weight and level it with a diamond in this position. 😃 And I also just thought that perhaps you can print a balancing washer on a 3D printer. You just need to make the outer sides thicker so that the counterweights with centrifugal force do not tear the washer.
Awesomeness... I couldn't grasp the concept of sharpening the bits until I watched this video. I was grinding my drill bits as sharp as a pencil, wondering why it wasn't helping... come to find out the tip needs to actually be damn near flat. Lol thanks for the info!
I used to ask slower kids if they've ever seen a match burn twice? Then light it, blow it out and say "once". Then quickly grab their arm and put the match on it and say "twice".
Mechanisms with a retractable cord have a second spring. When the cord is pulled out, this spring is compressed, when released, the mechanism works due to the second spring. In mechanical watches, there are two springs: one for winding the mechanism - a power one, the second small and weak (like mine) is needed for the balance-pendulum.
@@chandradeepb3622 Sorry, I'm working on a new topic now. I think you can easily find the necessary explanatory video, there is plenty of content about clockwork mechanisms on RU-vid.
Колбу двигателя Стирлинга нужно покрасить селективным покрытием, получится вечный солнечный двигатель тогда♻️⚡☝️🧠👍😇 А если "посадить" Стирлинга на "мотосолдата", то получится автономный велосипедист-генератор⚡♻️👍
This is not a watch, it is only a lever escapement. There is a link with STL files in the video description - drive.google.com/drive/folders/1Do7NP9oTvcqLYfgWy4bN4XQslBqhhdwh You can order a 3D print and assemble it yourself. But you can search on RU-vid, many people make real watches and much more interesting than this. Some even make them from wood and on a 3D printer, there are a lot of watchmakers, search on RU-vid.
The truly interesting question is: which is the *curve* which realizes the minimal time? This problem, now called the "brachistochrone problem", confused Galileo himself, and was solved by several mathematicians, among them Newton.
Almost 3 minutes, I was too lazy to shoot longer. 😃 I did this shooting back in 2017. I deleted the video, but it remained on my PC. If you are interested, you can watch it here - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-xXzOWQMAvjQ.html
Of course that a "simulator" is no proof. Yet, if you compute the time spent for the descent using F=ma (namely, the vertical component of the acceleration has to be constant), you will find that at 45 degree the time is minimal.
I,ve just got one of these and it only heated up once then it did,nt work again,then I bought another one it heated up once then it would,nt work again.
There was a comment under the video: "Assuming same base b, the time to reach bottom is proportional to inverse sqrt of sin(2θ). sin(2×30°)=sin(2×60°) # sin(2×45°)"
Informative video and fun to watch. The first time I saw this, I missed the demo near the end with the hand-power generator. Looks like a small motor with a gearbox and a handle to turn it. I'd love to see a video about it.
the earth's escape velocity is around 11km/s, if you beefed up a chaped charge and fired it straight up, the projectile will no go back down ( ignoring air resistance ofc )
This is the most impressive video I saw today! 😱 I think with 6 pole armature, distributed winding and 6 segments commutator, it would have a very smooth operation.
