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outstanding!!!

Hi, I loved this mechanism and planning to do this. Do you have any link to the motor which you used? My dome is a bit heavy, approximately 300 kgs., as i built it from metal. Any suggestion for a motor? I would really appreciate it.

Are you by chance in the United States? I would really love the opportunity to come see your observatory in person, if you would allow. I am looking to do almost the exact same thing on our property here in Parrotsville TN, USA. Doesn't seem to be much infor out there how to build one. If you aren't in the U.S., would you sell plans or share anything?

ravenandowl789657933.wordpress.com/

I'd love to see more detail on how it's built. I have a home-built 4 meter dome that I'd like to motorize something like this. Rick

Thats a big can opener

Excellent work and amazing choice of an Elvis classic. :) I do have to ask for your advice. I am planning on building my own obsy dome and would be very grateful if you could share some design data. I especially would like to know hoe to determine the length of the ribs without actually having to trim them before attaching. I would rather cut them out to the right length in the first place. TIA, Clear skies.

Very Awesome!!! Does the shutter have any wheels on it? Or does it just ride on the frame?also did you make your own pulley's. Did you post this online? Sorry for all the questions but I'm building an observatory also just can't figure out a system for the shutter

Thanks

Nice solution!

The link to your blog does not work?!

Good work boy 👍

Dangerous!!

Thanks, both pistons, the power and the pump were made from quick hardening 'Plumbers Mait' which is a two part acrylic putty that is used in fixing leaking drains. It comes in the form of a short segment of a cylinder looking a bit like brown rock candy and you just slice off a piece and knead it with your fingers. Then I packed it inside the brass cylinder tubes and pushed it out again(very important!) about 3-4 minutes after the mix, as the stuff starts to harden. Do not leave it in until it has completely hardened, or it will stay there for good ;). You can bury a piece of brass wire inside it leaving an end sticking out of the top, to serve as a convenient hook for linking to the connecting rod. Otherwise, you can do that later and drill a hole in the hardened piston to fix the hook to it with acrylic. I hope this helps. Good luck and a happy New Year.

Very good your engine and works perfectly, congratulations. How it's done its power piston? Greetings from Brazil, Leandro Wagner.

Man, it's scary...

@leandrojwfolha Thanks a lot. It was fun making it :)

I really enjoyed the water pump and its motor stirling! congratulations!

@orsiswed thank you very much friend.

@cellman64 I made the piston chamber from a brass cylinder section to which I welded a nozzle at the bottom. The piston itself is made from a two-part composite putty called Plubmer's-Mait.This stuff is easy to mold but after 5 minutes sets hard. To make the piston, just knead some of the putty with your fingers and stuff it in a small section of tube,the same diameter as the cylinder.Push it out after 4 minutes otherwise it will stick there forever:) It can be polished when set.

friend it is reaaly very good. how did you make power piston? I want to make like that,if you explain.

Nice work, the slower rpms from the pump will probably balance out the fact that without the pump the engine would over heat and slow down anyway, a constant useable torque is better than a power source that drops over time

Well, so far I have noticed it is much quieter! I suggest if one uses the windynation blades one should place a 1/4" thick 5/8" diameter spacer between the hub and the front of the bearing. I used a 5/8" nut sawn half way through its thickness. The revs are lower than the carbon fiber blades and so is the output overall but it all looks rigid enough and hopefully these will not shatter on contact with birds!

Yes, I think in theory that should work but I very much doubt that the cooling effect would be anywhere near of a "usable" degree and the heat generated by whatever device e.g. electric motor is being used to turn the flywheel would to a large extent annul the net temperature fall. Of course one would need to experiment to be sure and one can envisage a system using say a wind turbine driving the engine "backwards" to produce a cooling effect.

Now if you removed the heat source and forced the thing to spin with a motor will it cool the water? I think that's true. Have you tried that? I'd be interested to know how cool you can get the water by running it at various speeds.

@cnchybrid Thanks.. issa ntella' video naqra ahjar ghax dan minn fuq il mobile :)

Prosit :)

I have no plans but I can send you the photos of the individual parts of the pump so you can make one yourself with the material you have at hand. It's a very simple pump and quite easy to make. The piston (I tried several materials,because I do not have a lathe) is made of quick set (two part) putty used for plumbing leaks of the type called "Plumber's Mait" It has to be fairly loosely fitting.Friction kills this machine.Please send me your email address so I can post you the photos

Please can you sent me the plans from the pump?

Thanks. I meant to write it up sometime. I have all the photos but I am a bit lazy when it comes to writing :)

Thanks

Nice work, looks great!

thanks:)

great work congratulations!!!