tag:blogger.com,1999:blog-74998936244674772602011-09-26T03:51:00.044-07:00head1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.comBlogger21100tag:blogger.com,1999:blog-7499893624467477260.post-35597268303792267862008-03-27T14:24:00.000-07:002008-12-09T03:29:35.395-08:00Re-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="http://4.bp.blogspot.com/_eePk-f1Usdk/SAg_DWbs8NI/AAAAAAAAAUM/7GZWTpfhcU0/s1600-h/assembly1-Model.jpg"><img id="BLOGGER_PHOTO_ID_5190467897338425554" style="WIDTH: 317px; CURSOR: hand; HEIGHT: 270px" height="276" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/SAg_DWbs8NI/AAAAAAAAAUM/7GZWTpfhcU0/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="http://4.bp.blogspot.com/_eePk-f1Usdk/R-wQ1PMp5aI/AAAAAAAAARk/AiDmTTWPkdw/s1600-h/DSCN2629.JPG"><img id="BLOGGER_PHOTO_ID_5182535777995318690" style="CURSOR: hand" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/R-wQ1PMp5aI/AAAAAAAAARk/AiDmTTWPkdw/s320/DSCN2629.JPG" border="0" /></a><br />The planetary gear box with the drive shaft and the angular gear box<br /><br /><a href="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypQvMp5hI/AAAAAAAAASc/Xb2q8Fdbjcg/s1600-h/DSCN2638.JPG"><img id="BLOGGER_PHOTO_ID_5182703376209143314" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypQvMp5hI/AAAAAAAAASc/Xb2q8Fdbjcg/s200/DSCN2638.JPG" border="0" /></a> <a href="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypCvMp5gI/AAAAAAAAASU/sQsoEc_kL3o/s1600-h/DSCN2635.JPG"><img id="BLOGGER_PHOTO_ID_5182703135690974722" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypCvMp5gI/AAAAAAAAASU/sQsoEc_kL3o/s200/DSCN2635.JPG" border="0" /></a><br />You can see the counting wheels<br /><br /><div><br /><div><a href="http://4.bp.blogspot.com/_eePk-f1Usdk/R-yo2PMp5fI/AAAAAAAAASM/cH7AwLFNM0c/s1600-h/DSCN2633.JPG"><img id="BLOGGER_PHOTO_ID_5182702920942609906" style="CURSOR: hand" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/R-yo2PMp5fI/AAAAAAAAASM/cH7AwLFNM0c/s200/DSCN2633.JPG" border="0" /></a> <a href="http://2.bp.blogspot.com/_eePk-f1Usdk/R-yonvMp5eI/AAAAAAAAASE/DP_XQKI3BEs/s1600-h/DSCN2632.JPG"><img id="BLOGGER_PHOTO_ID_5182702671834506722" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-yonvMp5eI/AAAAAAAAASE/DP_XQKI3BEs/s200/DSCN2632.JPG" border="0" /></a><br />Angular gearbox and the gears driving the final axes<br /><br /><a href="http://1.bp.blogspot.com/_eePk-f1Usdk/R-yoWfMp5dI/AAAAAAAAAR8/FTnRr_mDp0I/s1600-h/DSCN2631.JPG"><img id="BLOGGER_PHOTO_ID_5182702375481763282" style="CURSOR: hand" alt="" src="http://1.bp.blogspot.com/_eePk-f1Usdk/R-yoWfMp5dI/AAAAAAAAAR8/FTnRr_mDp0I/s200/DSCN2631.JPG" border="0" /></a> <a href="http://4.bp.blogspot.com/_eePk-f1Usdk/R-yoHPMp5cI/AAAAAAAAAR0/wVVWaN-FBU8/s1600-h/DSCN2630.JPG"><img id="BLOGGER_PHOTO_ID_5182702113488758210" style="CURSOR: hand" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/R-yoHPMp5cI/AAAAAAAAAR0/wVVWaN-FBU8/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="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypivMp5iI/AAAAAAAAASk/irip3Tt3MLk/s1600-h/DSCN2641.JPG"><img id="BLOGGER_PHOTO_ID_5182703685446788642" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-ypivMp5iI/AAAAAAAAASk/irip3Tt3MLk/s200/DSCN2641.JPG" border="0" /></a></div><br /><div>Bits and pieces.... </div></div></div></div></div></div></div></div><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/7499893624467477260-3559726830379226786?l=planetarium2.blogspot.com' alt='' /></div>head1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.com0tag:blogger.com,1999:blog-7499893624467477260.post-36352597327912409362008-03-22T05:00:00.000-07:002008-12-09T03:29:37.307-08:00<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="http://2.bp.blogspot.com/_eePk-f1Usdk/R-UJUfMp42I/AAAAAAAAAM4/8HXJrvCnTNQ/s1600-h/gear.jpg"><img id="BLOGGER_PHOTO_ID_5180557193936233314" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-UJUfMp42I/AAAAAAAAAM4/8HXJrvCnTNQ/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="http://1.bp.blogspot.com/_eePk-f1Usdk/R-UHxPMp41I/AAAAAAAAAMw/PG_I2uf5uGE/s1600-h/PLANET5.JPG"><img id="BLOGGER_PHOTO_ID_5180555488834216786" style="CURSOR: hand" alt="" src="http://1.bp.blogspot.com/_eePk-f1Usdk/R-UHxPMp41I/AAAAAAAAAMw/PG_I2uf5uGE/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="http://2.bp.blogspot.com/_eePk-f1Usdk/R-T-_vMp4uI/AAAAAAAAAL0/GUbS4jGtbmI/s1600-h/PLANET3.JPG"><img id="BLOGGER_PHOTO_ID_5180545842337669858" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-T-_vMp4uI/AAAAAAAAAL0/GUbS4jGtbmI/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="http://3.bp.blogspot.com/_eePk-f1Usdk/R-T-7_Mp4tI/AAAAAAAAALs/TXDWPXW7r1k/s1600-h/PLANET2.JPG"><img id="BLOGGER_PHOTO_ID_5180545777913160402" style="CURSOR: hand" alt="" src="http://3.bp.blogspot.com/_eePk-f1Usdk/R-T-7_Mp4tI/AAAAAAAAALs/TXDWPXW7r1k/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="http://4.bp.blogspot.com/_eePk-f1Usdk/R-T_EPMp4vI/AAAAAAAAAL8/7jw-u430suo/s1600-h/PLANET4.JPG"><img id="BLOGGER_PHOTO_ID_5180545919647081202" style="CURSOR: hand" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/R-T_EPMp4vI/AAAAAAAAAL8/7jw-u430suo/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="http://2.bp.blogspot.com/_eePk-f1Usdk/R-T90vMp4sI/AAAAAAAAALk/Mp2WB59G84I/s1600-h/PLANET1.JPG"></a></div><a href="http://4.bp.blogspot.com/_eePk-f1Usdk/R-ULQ_Mp45I/AAAAAAAAANQ/YOHPuAep1ws/s1600-h/PLANET1.JPG"><img id="BLOGGER_PHOTO_ID_5180559332829946770" style="CURSOR: hand" alt="" src="http://4.bp.blogspot.com/_eePk-f1Usdk/R-ULQ_Mp45I/AAAAAAAAANQ/YOHPuAep1ws/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="http://1.bp.blogspot.com/_eePk-f1Usdk/R-T44fMp4pI/AAAAAAAAALM/aR2MhurkUGk/s1600-h/129-2936_IMG.JPG"></a></span></div><a href="http://2.bp.blogspot.com/_eePk-f1Usdk/R-T59vMp4rI/AAAAAAAAALc/HxG3dk0dCsc/s1600-h/129-2936_IMG.JPG"><img id="BLOGGER_PHOTO_ID_5180540310419792562" style="CURSOR: hand" alt="" src="http://2.bp.blogspot.com/_eePk-f1Usdk/R-T59vMp4rI/AAAAAAAAALc/HxG3dk0dCsc/s320/129-2936_IMG.JPG" border="0" /></a><br /><div></div><br /><div><span style="font-family:verdana;"><a href="http://3.bp.blogspot.com/_eePk-f1Usdk/R-T5H_Mp4qI/AAAAAAAAALU/se3C9VsRh58/s1600-h/129-2938_IMG.JPG"><img id="BLOGGER_PHOTO_ID_5180539387001823906" style="CURSOR: hand" alt="" src="http://3.bp.blogspot.com/_eePk-f1Usdk/R-T5H_Mp4qI/AAAAAAAAALU/se3C9VsRh58/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><div class="blogger-post-footer"><img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/7499893624467477260-3635259732791240936?l=planetarium2.blogspot.com' alt='' /></div>head1962http://www.blogger.com/profile/11083452177987168127noreply@blogger.com2