tag:blogger.com,1999:blog-74998936244674772602024-02-06T21:08:45.013-08:00A MECHANICAL PLANETARIUMhead1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-7499893624467477260.post-35597268303792267862008-03-27T14:24:00.000-07:002008-12-09T03:29:35.395-08:00SOME OF THE INSIDESRe-drew the arms.<br />They look a lot better now.<br />And there is a scale to it too.<br />A strange one but still, a scale.<br />Took the square root of the distance to the sun in AU's.<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEDIipAGdF5thTDgoueWE2X3UUGr7tS-6fIr0hwY9sTRJmB0MYCD0u81wxUywQzcKmio9QFLQynCDsoQm4m4_lX_wzqn7rmsArwQhNlbvJT8RGagzcsjZP9taKWv8Idh7YIlHTx7DlXTA/s1600-h/assembly1-Model.jpg"><img id="BLOGGER_PHOTO_ID_5190467897338425554" style="WIDTH: 317px; CURSOR: hand; HEIGHT: 270px" height="276" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiEDIipAGdF5thTDgoueWE2X3UUGr7tS-6fIr0hwY9sTRJmB0MYCD0u81wxUywQzcKmio9QFLQynCDsoQm4m4_lX_wzqn7rmsArwQhNlbvJT8RGagzcsjZP9taKWv8Idh7YIlHTx7DlXTA/s320/assembly1-Model.jpg" width="435" border="0" /></a><br /><div>Made some pics yesterday.<br />All what you see here times 8.<br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIE4R-kEjCG4fOI6DwfzXMOf-Qr7ZxYnOAIy2ihuVwc0efpQGz3otts3tpyG2ZECGtx2mEp6nK6TZyeh5Qb8mpbtySiT98XXhmCFFT0AqbM1KYMX36RA6tia7w04E4yDj3imj5i8FHDJs/s1600-h/DSCN2629.JPG"><img id="BLOGGER_PHOTO_ID_5182535777995318690" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIE4R-kEjCG4fOI6DwfzXMOf-Qr7ZxYnOAIy2ihuVwc0efpQGz3otts3tpyG2ZECGtx2mEp6nK6TZyeh5Qb8mpbtySiT98XXhmCFFT0AqbM1KYMX36RA6tia7w04E4yDj3imj5i8FHDJs/s320/DSCN2629.JPG" border="0" /></a><br />The planetary gear box with the drive shaft and the angular gear box<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUvr9zd-rwrhnNFxcpq2HhiwLtipVMmEjViF6fPpUAHs49RzrBHq5sHiI46P0A38MdHUDrWKV3a-533W_cl6TvXRXxKBqeRir63lpbuVuaYuQbKWhyphenhyphenngjmt7Tc4dEhcNwb-jeusi9OFvw/s1600-h/DSCN2638.JPG"><img id="BLOGGER_PHOTO_ID_5182703376209143314" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhUvr9zd-rwrhnNFxcpq2HhiwLtipVMmEjViF6fPpUAHs49RzrBHq5sHiI46P0A38MdHUDrWKV3a-533W_cl6TvXRXxKBqeRir63lpbuVuaYuQbKWhyphenhyphenngjmt7Tc4dEhcNwb-jeusi9OFvw/s200/DSCN2638.JPG" border="0" /></a> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYMuvMOsWaZdTq1guA29QNmsHBMWBB1Kn0Nnzhhvn5ImD-FZJRZjnVe51RDqrH61kI96m7U-2bFbeik8tZU4zfFGVGA69lsyEQYldp1Ne-gOykJsnTfRWL4lxiFMrcyZnrbFN4MJl6Ixs/s1600-h/DSCN2635.JPG"><img id="BLOGGER_PHOTO_ID_5182703135690974722" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgYMuvMOsWaZdTq1guA29QNmsHBMWBB1Kn0Nnzhhvn5ImD-FZJRZjnVe51RDqrH61kI96m7U-2bFbeik8tZU4zfFGVGA69lsyEQYldp1Ne-gOykJsnTfRWL4lxiFMrcyZnrbFN4MJl6Ixs/s200/DSCN2635.JPG" border="0" /></a><br />You can see the counting wheels<br /><br /><div><br /><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirxCI6zIhJloZpewUzYjP5tegXACj43oGKLuY7OeoRdo55I2SeOA6Y1LUuoWZCLQZJAvt9l47X8saeBOpJVe537XcDYxBC9pAlPCJ0bsxhh_XOHgTQv2Sji-HOeuJAyVfvYLrRhekXD5I/s1600-h/DSCN2633.JPG"><img id="BLOGGER_PHOTO_ID_5182702920942609906" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEirxCI6zIhJloZpewUzYjP5tegXACj43oGKLuY7OeoRdo55I2SeOA6Y1LUuoWZCLQZJAvt9l47X8saeBOpJVe537XcDYxBC9pAlPCJ0bsxhh_XOHgTQv2Sji-HOeuJAyVfvYLrRhekXD5I/s200/DSCN2633.JPG" border="0" /></a> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRh86yvtaFsbybPiwrj-HxF986A-3HrNb-3LJqHOd7XeSa49F0YcrCUV81DgJDnOxKHzeiyHYk3-JWR8eZwwFnQi1TUqYUM-GASQpKtjd_hyphenhyphen44U4TBMbbu9P3NYufLrhGHDNjFbOKZYto/s1600-h/DSCN2632.JPG"><img id="BLOGGER_PHOTO_ID_5182702671834506722" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiRh86yvtaFsbybPiwrj-HxF986A-3HrNb-3LJqHOd7XeSa49F0YcrCUV81DgJDnOxKHzeiyHYk3-JWR8eZwwFnQi1TUqYUM-GASQpKtjd_hyphenhyphen44U4TBMbbu9P3NYufLrhGHDNjFbOKZYto/s200/DSCN2632.JPG" border="0" /></a><br />Angular gearbox and the gears driving the final axes<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg9IuepgoF1Iw6dtXAvq1PLetp8z_TVAt4GkEaFBF-s3k2KwYCB3Z3Y6vUqlTwcy1QB1sgbrznpT41K9fV3dnBEMn8T2H8bNHDOsFe058E65b9gPnuJcFJmtR3O1oYtuWO43L5_hM91mZ0/s1600-h/DSCN2631.JPG"><img id="BLOGGER_PHOTO_ID_5182702375481763282" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg9IuepgoF1Iw6dtXAvq1PLetp8z_TVAt4GkEaFBF-s3k2KwYCB3Z3Y6vUqlTwcy1QB1sgbrznpT41K9fV3dnBEMn8T2H8bNHDOsFe058E65b9gPnuJcFJmtR3O1oYtuWO43L5_hM91mZ0/s200/DSCN2631.JPG" border="0" /></a> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkIXQiFxxM7VRn7NCPqGCHvSmujd3n9pSFoesWY00ITqsz3DrFGZQiLpO0Zh1UflYGm2C1hlfhhWrCf6wEjUfk1xQ7yOV9fe_TYL6bwQsEAR8XZ7DhT-fboPmt9F8BxhGztTWJSFXa_Xw/s1600-h/DSCN2630.JPG"><img id="BLOGGER_PHOTO_ID_5182702113488758210" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgkIXQiFxxM7VRn7NCPqGCHvSmujd3n9pSFoesWY00ITqsz3DrFGZQiLpO0Zh1UflYGm2C1hlfhhWrCf6wEjUfk1xQ7yOV9fe_TYL6bwQsEAR8XZ7DhT-fboPmt9F8BxhGztTWJSFXa_Xw/s200/DSCN2630.JPG" border="0" /></a><br /><br /><div>Top and bottom view...<br /><br /><br /><div><br /><div><br /><div><br /><div></div><br /><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjl4WOmRRTwv8Q8uPNvQJJYXoaJRMKiQmgOT-Biv1dwQjQkdLu_qgvMO985Gbrnjc8kaTrJLQMsmjVUqPDBZ8oZRKccTQVJhalFTnkrxAnz_aea12B_WAA6MLRmuOGSO40TU73gJAtUb0s/s1600-h/DSCN2641.JPG"><img id="BLOGGER_PHOTO_ID_5182703685446788642" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjl4WOmRRTwv8Q8uPNvQJJYXoaJRMKiQmgOT-Biv1dwQjQkdLu_qgvMO985Gbrnjc8kaTrJLQMsmjVUqPDBZ8oZRKccTQVJhalFTnkrxAnz_aea12B_WAA6MLRmuOGSO40TU73gJAtUb0s/s200/DSCN2641.JPG" border="0" /></a></div><br /><div>Bits and pieces.... </div></div></div></div></div></div></div></div>head1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.com0tag:blogger.com,1999:blog-7499893624467477260.post-36352597327912409362008-03-22T05:00:00.000-07:002008-12-09T03:29:37.307-08:00A MECHANICAL REAL TIME PLANETARIUM<span style="font-family:verdana;">I started this a long time ago.</span><br /><span style="font-family:verdana;">The idea was that each planet would have it's own drive disk.</span><br /><span style="font-family:verdana;">Stack them all together, drive 8 hollow shafts and Bob's your uncle!</span><br /><span style="font-family:verdana;">In the real world this was a bit more difficult then it seemed at first.</span><br /><span style="font-family:verdana;">I had to make enourmous reduction gears to make the far planets move real slow.</span><br /><span style="font-family:verdana;">And that in real time....</span><br /><span style="font-family:verdana;">Interesting though.</span><br /><span style="font-family:verdana;"></span><br /><br /><span style="font-family:verdana;">I found that Tamiya made planetary gear boxes.</span><br /><span style="font-family:verdana;">You can stack them and configure the ratio you want.</span><br /><span style="font-family:verdana;">Nice.</span><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidau-lLKW8xNx2pdrQNu46_Hvg-t2CFOzFY03Mm8dLg6YJmHCgTy9aJV9c9xIbCfPggTqx0P0-2DON5Llgl5ERZgWPiJ6fRM5XKljkC3hn5ij0Shr0ypO8R3WGdbbJv7DclATOzHIvblw/s1600-h/gear.jpg"><img id="BLOGGER_PHOTO_ID_5180557193936233314" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEidau-lLKW8xNx2pdrQNu46_Hvg-t2CFOzFY03Mm8dLg6YJmHCgTy9aJV9c9xIbCfPggTqx0P0-2DON5Llgl5ERZgWPiJ6fRM5XKljkC3hn5ij0Shr0ypO8R3WGdbbJv7DclATOzHIvblw/s320/gear.jpg" border="0" /></a><br /><span style="font-family:verdana;">Still needed lots of other gears.</span><br /><span style="font-family:verdana;">Had to make these myself.</span><br /><br /><span style="font-family:verdana;">Even then, there is almost no (easy) way of making the exact orbit times.</span><br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAPpGcbXIerSTxYXSiFoimDi9EWgfMNQ5H2-LIPPAsFfueILHc4iA4fNqarxmu8URDHwwOC6GoPgsz1rDNacLjoOwlMQq-8A4S6AQ0FRBGcM7TUGKdJx0ZBISdVwhtPZoqzeuNJ_P0DMQ/s1600-h/PLANET5.JPG"><img id="BLOGGER_PHOTO_ID_5180555488834216786" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjAPpGcbXIerSTxYXSiFoimDi9EWgfMNQ5H2-LIPPAsFfueILHc4iA4fNqarxmu8URDHwwOC6GoPgsz1rDNacLjoOwlMQq-8A4S6AQ0FRBGcM7TUGKdJx0ZBISdVwhtPZoqzeuNJ_P0DMQ/s320/PLANET5.JPG" border="0" /></a><br /><br /><span style="font-family:verdana;font-size:78%;color:#ff0000;"><strong>click on the image to see the calculations<br /></strong></span><br /><span style="font-family:verdana;">The bigest error is on Mercury.</span><br /><span style="font-family:Verdana;">0.14 degrees off per (Mercury) year.</span><br /><span style="font-family:Verdana;">I can live with that.</span><br /><br /><br /><span style="font-family:verdana;">The solution:</span><span style="font-family:verdana;">Make some counting wheels and use these to time the rotation exactly.</span><br /><span style="font-family:verdana;">So you need a little computer to switch the motors on and off.</span><br /><span style="font-family:verdana;">Can be done.</span><br /><span style="font-family:verdana;">First I thought about a PLC, now PIC looks the better choice.</span><br /><span style="font-family:verdana;">I can worry about that later.</span><br /><span style="font-family:verdana;">Much later.</span><br /><div><div><div><div><br /><div><span style="font-family:verdana;">Some of the drawings:</span></div><div><span style="font-family:verdana;">The drive disk, need 8 of them...</span><br /><span style="font-family:verdana;"></span><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhP1DSJT2xF6XL5QKjCdY8AJRAFTxDAcF4EUeVesuSv7934cCmv9-ciOhNMy2Y-K0Z2oa461aiH3fH8XsTGVi5laJcqWUEvHAto8R7U0CgBLHT6abxVcZNkUYdz8sEuGORKb0NRZLFUCgY/s1600-h/PLANET3.JPG"><img id="BLOGGER_PHOTO_ID_5180545842337669858" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhP1DSJT2xF6XL5QKjCdY8AJRAFTxDAcF4EUeVesuSv7934cCmv9-ciOhNMy2Y-K0Z2oa461aiH3fH8XsTGVi5laJcqWUEvHAto8R7U0CgBLHT6abxVcZNkUYdz8sEuGORKb0NRZLFUCgY/s320/PLANET3.JPG" border="0" /></a></div><div></div><div><span style="font-family:verdana;">Detail of the shafts with the gears....</span><br /></div><br /><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvetV5AGSC-eCGLXZ9AJigb8H8T4HJk1rkp0eaiJDXp7n4FIgH4td1KwF4fBmLfy92YQtBYYsSivL4VwGD-UL1Ru2tQdGwf-djOth3zgO4JEZviBehGDWpi9TgLAaq-aQJuJotsue-nOc/s1600-h/PLANET2.JPG"><img id="BLOGGER_PHOTO_ID_5180545777913160402" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgvetV5AGSC-eCGLXZ9AJigb8H8T4HJk1rkp0eaiJDXp7n4FIgH4td1KwF4fBmLfy92YQtBYYsSivL4VwGD-UL1Ru2tQdGwf-djOth3zgO4JEZviBehGDWpi9TgLAaq-aQJuJotsue-nOc/s320/PLANET2.JPG" border="0" /></a></div><br /><div><span style="font-family:verdana;"></span></div><div><span style="font-family:verdana;">Bits and pieces....</span></div><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyOqsIJnklpwerpsuU4Mm7eaWW2c3o9VRIJnA8JR-zbmqD3hq7UCa35NWxziMcjOFTwj3dH-nFcno1C-VMHTgIoE87Sc7CTG6Jqi60MKaB97St834hQIV9v7O1d1iWPR3jqb3ZdG3h_FM/s1600-h/PLANET4.JPG"><img id="BLOGGER_PHOTO_ID_5180545919647081202" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhyOqsIJnklpwerpsuU4Mm7eaWW2c3o9VRIJnA8JR-zbmqD3hq7UCa35NWxziMcjOFTwj3dH-nFcno1C-VMHTgIoE87Sc7CTG6Jqi60MKaB97St834hQIV9v7O1d1iWPR3jqb3ZdG3h_FM/s320/PLANET4.JPG" border="0" /></a></div><div></div><div><span style="font-family:verdana;">Assembled...</span></div><div><span style="font-family:verdana;">Well.. on the screen, that is</span></div><div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEieJdYjZ6xBm_jmHKyBMgUxybSFWWbZUJQ0iBQ9C78hyphenhyphenOYGpu0Eb0obYR6eShHu8JtYSLYrMPMOoAqQN6HTL7yha8ukvaciXxF42GSPBnyDGBKhRn8jkWTqG6LD5WdXnkMlVlUy5evEA90/s1600-h/PLANET1.JPG"></a></div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4CXN_BonOFG5cjPVf33UuQhP_jNOyhapq6oqkdHcA9HWO43jPKirWobtaSyHkYFlHT_9Exi0dmG6GN53VQGTE2coC13KCJ2R16HOwAmqyP8bjIe3cBmP2jZhRYqk8pCO_PGqqxNWSNTc/s1600-h/PLANET1.JPG"><img id="BLOGGER_PHOTO_ID_5180559332829946770" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg4CXN_BonOFG5cjPVf33UuQhP_jNOyhapq6oqkdHcA9HWO43jPKirWobtaSyHkYFlHT_9Exi0dmG6GN53VQGTE2coC13KCJ2R16HOwAmqyP8bjIe3cBmP2jZhRYqk8pCO_PGqqxNWSNTc/s320/PLANET1.JPG" border="0" /></a><br /><br /><div><span style="font-family:verdana;">When Pluto was <span class="blsp-spelling-corrected" id="SPELLING_ERROR_0">considered</span> a "real" planet, I lost interest.</span><br /><span style="font-family:verdana;">I made only 8 drives and I was not going to do it all again just because of Pluto.</span></div><br /><br /><div><span style="font-family:verdana;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjdUtjQHyV_8ZV5NUgrFfbYtdUptBsfD6nHULbP5KQXMtlbFHr6745eJyUz-V0-_vhPi3rC4EJgLHVkDCXX93rUj6TcSFU5pnIBa8zUaqqubDrxG-WdrEF7Y7tPfMs7X3e3A_y44YW6Dko/s1600-h/129-2936_IMG.JPG"></a></span></div><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheQ7MeRNNRr0FKofizuLOcBG49whp3TnGcs4lhtiZM0n-yhPD3EYHq5lgItf7o7V6hU44XY47YOj_aNDqadYSF7sMdD74MhiDLoOjLDBUwPjv6rfnpiPo2bsOc2kn-DJTw5Zz6rOMjK2A/s1600-h/129-2936_IMG.JPG"><img id="BLOGGER_PHOTO_ID_5180540310419792562" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEheQ7MeRNNRr0FKofizuLOcBG49whp3TnGcs4lhtiZM0n-yhPD3EYHq5lgItf7o7V6hU44XY47YOj_aNDqadYSF7sMdD74MhiDLoOjLDBUwPjv6rfnpiPo2bsOc2kn-DJTw5Zz6rOMjK2A/s320/129-2936_IMG.JPG" border="0" /></a><br /><div></div><br /><div><span style="font-family:verdana;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhik154FmVj0pa7rPYiD9rWxwEp5yj3Qq6tniYoRHYNqaF-gkE2gP_6yu86-G2lgcnHgWOB_rGzghFTlNsfZUVh8cJV126m7vedqEwAm_YMwwnA5Hj_TrYld5_52JzpfcBmZ5o85kXXsMM/s1600-h/129-2938_IMG.JPG"><img id="BLOGGER_PHOTO_ID_5180539387001823906" style="CURSOR: hand" alt="" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhik154FmVj0pa7rPYiD9rWxwEp5yj3Qq6tniYoRHYNqaF-gkE2gP_6yu86-G2lgcnHgWOB_rGzghFTlNsfZUVh8cJV126m7vedqEwAm_YMwwnA5Hj_TrYld5_52JzpfcBmZ5o85kXXsMM/s320/129-2938_IMG.JPG" border="0" /></a></span></div><br /><div><span style="font-family:Verdana;">So, thanks to the International Astronomical Union, </span><span style="font-family:Verdana;">Pluto is what it is suposed to be:</span></div><div><span style="font-family:Verdana;">A stone.</span></div><div><span style="font-family:Verdana;">A large one, ok.</span></div><div><span style="font-family:Verdana;">But still a stone.</span><br /></div><div><span style="font-family:Verdana;">Good, I can start again.</span></div></div></div></div></div>head1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.com2