How great if you offered a pattern to build one! What a great hobby for many smarter individuals who need a project during these covid times! Best wishes to you, a truly brilliant man!
I’ve had requests for plans before and this in part is why I produced this construction video in the hope it would answer most questions on how it’s made. l haven’t got any plans, it evolved through trial and error and to produce detailed plans now would be quite a big job. Sorry there are no plans but thanks again for your interest and comments
@@Orrery-collection How ya goin Roy I hope you,re well. Really loved the work that you did on the Tellurian Orrery and very well done. I reckon I,m going to build one and was wondering the dimensions. Thanks a lot for responding I really appreciate it an thankyou.
Hi Roy. That's absolutely amazing. Congratulations. One question: do you think is possible to make 'real timed' model? I mean, a kind of tellurion-clock indicating correctly the current month and day. I'm planning to build a big clock wall for a Physics teachers room, just like yours, I would be very glad if could mail me your project, sizes, tips, etc. Is that possible? Thank you in advance!
Hi Andre. Thanks for your comments. It is possible to make Tellurion clocks and if you google that you will see examples of some very intricate examples . It would be possible in theory for me to change the motor on mine so the main drive gear runs in real time (ie one orbit of the sun in one year) but it would not be practical for a model like mine. Mine is made mainly from 18mm birch ply. The inner gear diameter is 124cms and has 99 teeth. The gear driving the moon ring has 8 teeth. This 99/8 ratio gives 12.375 lunar cycles per year on my model. The actual number of lunar cycles per year is 12.368272 so my model runs about 5 hours “fast” after one year. I haven’t got any actual plans for mine, I just drew it out onto the ply. I hope though that my video shows enough detail to explain its workings.
Fantastic work Roy, just mesmerising! Do you mind if I copy your design to make my own? What is the gear ratio for the Earth to spin from the moon dish? I can’t see anywhere that you have mentioned how accurate this rotation is, but assuming it is in proportion? Thanks!
Thanks. I have no objections to you copying my design and would be very interested to see your results. The dish has sloping edges which means the circumference is greater at the top than the bottom. The Earth’s rotation can be adjusted by changing where the cog at the end of the Earth’s axis contacts the dish. The dish diameter is about 155mm at the top giving a circumference of 487mm. The nylon cog has a diameter of approximately 5.3mm giving it a circumference of about 16mm. This rotates the Earth in theory 30 times per lunar cycle. However we must remember that this is made out of wood so getting an accurate rotation for the Earth by this method is not possible in practice. On my model when I have counted the Earth rotations (not easy) it can vary between 25 to 30 rotations per lunar cycle. You could introduce a brass gear ring instead of my “dish” which could give greater accuracy. Good Luck
Hi Daryl, thanks for your comment. The electric motor (12v) driving the system is at the opposite end of the rotating arm to the earth/moon assembly. It drives the wooden gear that engages with the inner ring and this drives the rotating arm. The rotating arm then drives the earth/moon at the other end. I hope this explains.
Hello, this project is incredible, it is just what I am looking for to elaborate with my students. I would like to know if you could facilitate the plans to make the cutting of the pieces correctly.
Hello Neftali. Thank you for your comments. I haven’t got any detailed plans, I just drew it out onto the birch ply. There was a lot of trial and error and it kind of evolved into its present state. I made this video as I had quite a few requests for plans and I hoped that this construction video would explain the basics of how I made it. The main dimensions are that the inner gear diameter is 124cms and has 99 teeth. The gear driving the moon ring has 8 teeth. This 99/8 ratio gives 12.375 lunar cycles per year on my model (The actual number of lunar cycles per year is about 12.368 ). I hope this is helpful. Roy
Hi Roy. Very fascinating work! Just a few questions: 1. Could this work with the illuminated sun from your other video 1 a. What would need to be done to not have a 'eclipses' with every cycle? 2. If you pulled it apart, could you make templates for one to follow and reconstruct, or alternatively, could you sell it as a kit?
Hi Vusikhaya 1. Yes my illuminated sun fits on this model and works exactly the same. 1a. As with all Orreries and Tellurions the distance between the earth and moon is not to scale and they are much too close. With this hugely reduced distance the eclipse shadow is corresponding much too big on the Earth. So with this model it has to be an eclipse every year. 2. I’ve been asked for plans before which is why I produced the “construction “ video.Unfortunately I haven’t got any plans, it evolved by trial and error but hopefully the video shows enough detail to see how it’s made. Thanks for your interest Roy
The gear that forms the base has no relevance. It was an old gear that I stored badly and it became warped and therefore useless. Rather the throw it away l used it as a base for this Tellurion.
Hi The earths spin is driven by the small nylon gear at the end of the earths axis making contact by gravity with the inside of the revolving “dish” that carries the moon. I suggest you watch the video again at approx 3mins 20 sec into the video where I think it can be seen fairly clearly. Roy
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How great if you offered a pattern to build one! What a great hobby for many smarter individuals who need a project during these covid times!
Best wishes to you, a truly brilliant man!
I’ve had requests for plans before and this in part is why I produced this construction video in the hope it would answer most questions on how it’s made. l haven’t got any plans, it evolved through trial and error and to produce detailed plans now would be quite a big job.
Sorry there are no plans but thanks again for your interest and comments
Thank you for this view and explanation of the tellurion’s assembly, very nicely done.
in addition, the constellations of stars are well presented around. very nice job ♡
Thank you!
Hey Roy! This is amazing, and it helped me lots with a project Im working on. Thank you so much!
Hi Eduardo,
Thanks for that. It’s always good to hear positive comments. I’m glad you’ve found it helpful.
You are a brilliant man!
It’s always good to receive appreciative comments. Thanks very much
This design is amazing. Thanks for sharing.
Thank you
... this is brilliant!
Thanks for comment
Love what you,ve done Roy but I wish you,d included the diameters. Very cool though , well done.
Thanks Ken. The inner diameter of the large “inner gear” is 1.28 meters. This dictates what all the other measurements are.
@@Orrery-collection How ya goin Roy I hope you,re well. Really loved the work that you did on the Tellurian Orrery and very well done. I reckon I,m going to build one and was wondering the dimensions. Thanks a lot for responding I really appreciate it an thankyou.
Cool
Hi Roy. That's absolutely amazing. Congratulations. One question: do you think is possible to make 'real timed' model? I mean, a kind of tellurion-clock indicating correctly the current month and day.
I'm planning to build a big clock wall for a Physics teachers room, just like yours, I would be very glad if could mail me your project, sizes, tips, etc. Is that possible? Thank you in advance!
Hi Andre. Thanks for your comments. It is possible to make Tellurion clocks and if you google that you will see examples of some very intricate examples . It would be possible in theory for me to change the motor on mine so the main drive gear runs in real time (ie one orbit of the sun in one year) but it would not be practical for a model like mine. Mine is made mainly from 18mm birch ply. The inner gear diameter is 124cms and has 99 teeth. The gear driving the moon ring has 8 teeth. This 99/8 ratio gives 12.375 lunar cycles per year on my model. The actual number of lunar cycles per year is 12.368272 so my model runs about 5 hours “fast” after one year. I haven’t got any actual plans for mine, I just drew it out onto the ply. I hope though that my video shows enough detail to explain its workings.
Fantastic work Roy, just mesmerising! Do you mind if I copy your design to make my own? What is the gear ratio for the Earth to spin from the moon dish? I can’t see anywhere that you have mentioned how accurate this rotation is, but assuming it is in proportion? Thanks!
Thanks. I have no objections to you copying my design and would be very interested to see your results.
The dish has sloping edges which means the circumference is greater at the top than the bottom. The Earth’s rotation can be adjusted by changing where the cog at the end of the Earth’s axis contacts the dish. The dish diameter is about 155mm at the top giving a circumference of 487mm. The nylon cog has a diameter of approximately 5.3mm giving it a circumference of about 16mm. This rotates the Earth in theory 30 times per lunar cycle. However we must remember that this is made out of wood so getting an accurate rotation for the Earth by this method is not possible in practice. On my model when I have counted the Earth rotations (not easy) it can vary between 25 to 30 rotations per lunar cycle.
You could introduce a brass gear ring instead of my “dish” which could give greater accuracy.
Good Luck
Hi Roy, beautiful piece of art you made here! What is "driving" the movement...an electric motor in the earth/moon assembly?
Hi Daryl, thanks for your comment.
The electric motor (12v) driving the system is at the opposite end of the rotating arm to the earth/moon assembly. It drives the wooden gear that engages with the inner ring and this drives the rotating arm. The rotating arm then drives the earth/moon at the other end. I hope this explains.
Roy Wilson makes perfect sense...thanks for the reply!
Hello, this project is incredible, it is just what I am looking for to elaborate with my students. I would like to know if you could facilitate the plans to make the cutting of the pieces correctly.
Hello Neftali. Thank you for your comments. I haven’t got any detailed plans, I just drew it out onto the birch ply. There was a lot of trial and error and it kind of evolved into its present state.
I made this video as I had quite a few requests for plans and I hoped that this construction video would explain the basics of how I made it. The main dimensions are that the inner gear diameter is 124cms and has 99 teeth. The gear driving the moon ring has 8 teeth. This 99/8 ratio gives 12.375 lunar cycles per year on my model (The actual number of lunar cycles per year is about 12.368 ).
I hope this is helpful.
Roy
Hi Roy. Very fascinating work!
Just a few questions:
1. Could this work with the illuminated sun from your other video
1 a. What would need to be done to not have a 'eclipses' with every cycle?
2. If you pulled it apart, could you make templates for one to follow and reconstruct, or alternatively, could you sell it as a kit?
Hi Vusikhaya
1. Yes my illuminated sun fits on this model and works exactly the same.
1a. As with all Orreries and Tellurions the distance between the earth and moon is not to scale and they are much too close. With this hugely reduced distance the eclipse shadow is corresponding much too big on the Earth. So with this model it has to be an eclipse every year.
2. I’ve been asked for plans before which is why I produced the “construction “ video.Unfortunately I haven’t got any plans, it evolved by trial and error but hopefully the video shows enough detail to see how it’s made.
Thanks for your interest
Roy
@@Orrery-collection i was hoping for something like a specsheet for each of the gears, and a step by step of how to assemble the whole thing
Sorry no plans
Whyd you stop doing vids, I love them
Thanks for the positive comments. I hope to post another video in the summer.
Was this created out of birch?
That’s right. 18mm birch ply
Why the gear at the base touching the floor?
The gear that forms the base has no relevance. It was an old gear that I stored badly and it became warped and therefore useless. Rather the throw it away l used it as a base for this Tellurion.
How does the earth spin? Or rather how does it spin so fast? I can't see a clear connection point
Hi
The earths spin is driven by the small nylon gear at the end of the earths axis making contact by gravity with the inside of the revolving “dish” that carries the moon. I suggest you watch the video again at approx 3mins 20 sec into the video where I think it can be seen fairly clearly.
Roy
How do you attqch the earth
Sticky tape round the axis (a bicycle spoke) and then earth is pushed on with a friction fit.
@@Orrery-collection thank you
Dear brother, I need a small model like this, can you send it to me. I am a science Communicator
Sorry I have no plans
Cool