Observatory dome crank mechanism

Wanna make a scope? Or better still, grind a mirror yourself. Or, you have some good tips in making a really useful accessory? This is the place to show what your hands can do...
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Barry
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Observatory dome crank mechanism

Post by Barry »

Broke the third crank mechanism! The dome is just too heavy! I wore out two round holes for a crank handle into oblong holes in just a few complete rotations. Two 1/2 inch holes through mild steel rhs turned into 1/2 inch by 1 inch oblongs.

So now i have built a SUPER CRANK MECHANISM out of two 25mm roller bearings side by side. I'll be getting Ron to put it on the site for me, on the support ring page.

http://www.aussiepeople.com.au/asignobs ... tring.aspx

Until then, heres a pic.

http://www.iceinspace.com.au/forum/atta ... 1175432984

Baz.
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Airconvent
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Post by Airconvent »

Sorry to hear that Barry. I'm sure you will get it fixed soon.
In the meantime, I think you could make do with 2 hamsters, a threadmill and lots of bait.....tracking may be a problem though...:lol:
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