Just Sharing This Channel Master 1.2M Installation/Restoration

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Finally I discovered what that thing is for in my garden with the "lines" that seems to spin around in the wind!
Got the drill and brushes out and prepped these parts, removed all the rust etc. Now coating them in some nice anti-rust primer.
It's a lovely shade of Merde don't you agree?

View attachment 116202
It’s a cobweb antenna :-rofl2

Code:
http://www.m0pzt.com/cobweb-aerial/

Still good going :Y
 

RustySpoons

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It’s a cobweb antenna :-rofl2

Code:
http://www.m0pzt.com/cobweb-aerial/

Still good going :Y
The "G3TXQ" Hexbeam, I know Ant (MW0JZE) who makes/sells those
 

Channel Hopper

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CH that's for the 2.4m SMC, not the 1.2m. And it does not list bearing size (Well I can't find it anyway :-rofl2)

It was an example of proper CM manuals against the later pretenders. Do you want to be mollycoddled throughout life?
 

RustySpoons

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It was an example of proper CM manuals against the later pretenders. Do you want to be mollycoddled throughout life?
But none say the bearing size, I've looked at the older copies and later copies.
 

saj1985

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This may or may not be of any use.
 

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  • CM Polar MT.pdf
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RustySpoons

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saj1985

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I paid £50 for it

Cheers, I think you posted that earlier on in this thread. I've "Collected" A few CM manuals now :)

you cant go wrong, did you travel far for it?
 

RustySpoons

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Mutant HD51
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RustySpoons

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Mutant HD51
Edision Primo IP S2
Dreambox DM800HD
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saj1985

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RustySpoons

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Mutant HD51
Edision Primo IP S2
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Had another look at bearings today, it seems impossible to get any Oilite in a suitable size, and you cannot get the inner sleeves in the right size.

So going to get some 6882 ball bearings (Flanged and sealed, F/RS), drill the mount out to 16mm or press them in with a press.
Save all this faffing around with antiquated sizes etc.
 

moonbase

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Had another look at bearings today, it seems impossible to get any Oilite in a suitable size, and you cannot get the inner sleeves in the right size.

So going to get some 6882 ball bearings (Flanged and sealed, F/RS), drill the mount out to 16mm or press them in with a press.
Save all this faffing around with antiquated sizes etc.



Is it an option to consider mounting a flanged bearing unit top and bottom? The old Precision dish polar mounts used flange bearings top and bottom but I am not sure if you could adapt a channel master polar mount for them?

2 Bolt Flanged Bearings | UCFL Bearings | SFT
 

RustySpoons

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2x CM 1.2m Polar Mount/Jack
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Gibertini 1m OP100 - STAB HH100 - Inverto Black Ultra 0.2 Twin
Mutant HD51
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Is it an option to consider mounting a flanged bearing unit top and bottom? The old Precision dish polar mounts used flange bearings top and bottom but I am not sure if you could adapt a channel master polar mount for them?

2 Bolt Flanged Bearings | UCFL Bearings | SFT
Yeah that's one way of doing it with a few mods, but that will cost a few quid :)

I've ordered some F6882RS bearings, I'll see if I can press them in as the holes are 15.9 on the CM Mount, if not i'll put the mount on a press drill and make them a bit bigger. The bearings are usually undersized rather than oversize, should be <16mm so might be enough to pop in.
 
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Had another look at bearings today, it seems impossible to get any Oilite in a suitable size, and you cannot get the inner sleeves in the right size.
Remind me, was the old Oilites worn out, or why can they not be salvaged?
 

RustySpoons

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Remind me, was the old Oilites worn out, or why can they not be salvaged?
When Captain Jack bought the dish the bearings were missing.
They had decided to use it as a fixed dish so binned them I guess.
I bought the dish from Captain Jack, he had some bearings in there but being a metric size they were a bit too small.
 
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When Captain Jack bought the dish the bearings were missing.
They had decided to use it as a fixed dish so binned them I guess, I bought the dish from Captain Jack.
Ah!
Would it be an option to post a question on one of the US sites to see if they can advise on US suppliers of imperial measures?
 

RustySpoons

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Ah!
Would it be an option to post a question on one of the US sites to see if they can advise on US suppliers of imperial measures?
It's a one off the config they used, the steel insert is a non standard size.
I'd rather use a decent quality ABEC ball race anyway, I'll update the post when the bearings arrive and if it works it's a nice easy solution and will be available easily rather than having to mess around getting imperial parts.
 

Channel Hopper

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3D print a couple of copies in plastic, and die cast them in a home foundry.

 
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