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Doc

My new toy a Fullerscope IV mount.

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Posted (edited)

I have been thinking about what you said Rusted and went into the shed to set up an experiment.

As you can see from the photo's below. I first tried a 45mm lump of wood and then set the PA to 53° which is the correct latitude for nottingham and the gap between the casting and the adapter is about 10mm.

Fullerscope IV Mount

 

Fullerscope IV Mount

I then included another piece of wood to make the height 60mm and this gave me a gap of 22mm.

Fullerscope IV Mount

 

Fullerscope IV Mount

 

Fullerscope IV Mount

So in essence any lump of aluminium between 40mm and 60mm will do. Where would you connect the adjuster, I see you have connected yours around the circumference of the end of the PA casing, but thats a little close for mine to the adapter plates.

Anyway time to mull this over.

 

 

 

Edited by Doc
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It looks like your mount has stainless steel shafts, the original Mark III (which I once had), and I'm pretty sure the original Mark IV also, had mild steel shafts making them prone to rusting.

John 

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Posted (edited)
3 hours ago, johnturley said:

It looks like your mount has stainless steel shafts, the original Mark III (which I once had), and I'm pretty sure the original Mark IV also, had mild steel shafts making them prone to rusting.

John 

The magnet still sticks on the shaft so my guess is Chromium plated steel. I'm sure magnets don't stick to Stainless.

 

 

Edited by Doc
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Posted (edited)

Looks good Doc. :thumbsup:
I could let you have a lump of 7" Ø alloy bar.
But the international postage would bankrupt one or both of us.

BTW: Your shafts may be chrome plated steel.
No magnet sticks to any of my stainless steel shafts.
I'd like to use my own clinometer like that but it just won't stick.

Edited by Rusted
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Not all stainless steel is non magnetic, it all depends on the "mix".   Slightly magnetic steels are rust resistant.        🙂 

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Spent a few hours today raising the height of the Fullerscope mount so the polar axis casing clears the adapter plates. A lump of ash wood 65mm thick was used. There is now enough room between the casing and plates to design a turnbuckle to raise and lower the polar axis to enable polar alignment.

The last one is a video.

 

Fullerscope IV Mount - Michael Bird

 

Fullerscope IV Mount - Michael Bird

 

Fullerscope IV Mount - Michael Bird

 

Fullerscope IV Mount - Michael Bird

 

Fullerscope IV Mount - Michael Bird

 

 

 

 

 

Edited by Doc
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