Channel Master/Laminas 1.8m project

A

archive10

Guest
I don´t know if could be possible to do something like that for so heavy dish like CM180 is... it is only idea...
It's not so much the weight of the dish, its more about the potential wind-loading when a storm whips through your neighbourhood.
A 180 dish is like a small boat sail - it will reqiure heavy-duty metal to keep firmly and safely attached to your monuting pole. Not to mention keeping it aligned properly!

This is what the original CM polar monut looked like (image from an earlier Ebay ad).

$_57_2.jpg

Some would argue that even that is a bit flimsy. But it seems to have supported many a CM180 throughout the past 30 years, so maybe its an ok design.
Forum member @CROSSBONES even had a copy made which lokked very much like the original. He sold it, but it pops up from time to time on ebay...
 

RimaNTSS

Super Moderator
Staff member
Joined
Jan 7, 2009
Messages
5,601
Reaction score
6,079
Points
113
Age
58
My Satellite Setup
Some SAT-related hardware.
My Location
N-E from Riga
Some time ago I have ordered digital scale from PRC. Just checked how precise this scale is .... I see it is precise enough. It maybe has even better precision as I do not what is the precision of the weight I have. What I will do next- will remove CM 1.8m antenna and do some weight check. I hope that will stop future guesses, at least in case of dishes I have in stock. IMG_20171129_182722 (Large).jpg IMG_20171129_182710 (Large).jpg
 
A

archive10

Guest
Personally I would consider the polarmount from IRTE in the 90's/00's to be about the best available. Very heavy galvanised parts, adaptable and virtually unbreakable, but the disadvantage is a fixed diameter post of approximately 110/115 mm.

114, it seems...
 

Attachments

  • IRTE_1.5m_ELAS15_opt.pdf
    537.3 KB · Views: 56

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Joined
Jan 1, 2000
Messages
35,533
Reaction score
8,554
Points
113
Age
59
Website
www.sat-elite.uk
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
The polarmount base is made of two halves that clamp together, it is possible to tighten up the four retaining bolts on different diameter posts though 4.5 inch has always been quoted (and supplied) by IRTE to the UK.
From memory there is also a set of boltholes in the official ground stand to lock the polarmount onto true south once installed, but it has been a very long time since I went into the back of the garage to check.
 

Captain Jack

Burnt out human
Joined
Oct 21, 2006
Messages
11,797
Reaction score
7,980
Points
113
My Satellite Setup
See signature
My Location
North Somerset
Looks like winter and spring wind battering the dish took made it lose alignment. So, it's realignment day today!
 

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Joined
Jan 1, 2000
Messages
35,533
Reaction score
8,554
Points
113
Age
59
Website
www.sat-elite.uk
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Looks like winter and spring wind battering the dish took made it lose alignment. So, it's realignment day today!

Which polamount was eventually used ?
 

Captain Jack

Burnt out human
Joined
Oct 21, 2006
Messages
11,797
Reaction score
7,980
Points
113
My Satellite Setup
See signature
My Location
North Somerset
The Precision one is still on there.
 
A

archive10

Guest
Looks like winter and spring wind battering the dish took made it lose alignment. So, it's realignment day today!
Eh? I thought those precision mounts were the dog's b******??
Or do you think it is the rest of the mount that has moved?
 

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Joined
Jan 1, 2000
Messages
35,533
Reaction score
8,554
Points
113
Age
59
Website
www.sat-elite.uk
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
Precision mounts have been known to suffer bearing failure. Time for some inox ?
 

Captain Jack

Burnt out human
Joined
Oct 21, 2006
Messages
11,797
Reaction score
7,980
Points
113
My Satellite Setup
See signature
My Location
North Somerset
Nothing major. The elevation slider nut was a little loose and the dish went down a few degrees. The bearings are about 2 years old - all OK there.

Greased everything up and it's good for another year.
 

Captain Jack

Burnt out human
Joined
Oct 21, 2006
Messages
11,797
Reaction score
7,980
Points
113
My Satellite Setup
See signature
My Location
North Somerset
Spent an hour or so servicing the declination jack. It was running really rough and kept stalling with E2 error. The worm drive itself was fine but the plastic gears inside were all gunked up hardened grease.

Cleaned it all out, relubed (oooeeerrr) and all is good again. Need to do the same with my azimuth one.
 
Last edited:

Captain Jack

Burnt out human
Joined
Oct 21, 2006
Messages
11,797
Reaction score
7,980
Points
113
My Satellite Setup
See signature
My Location
North Somerset
At the start of last lockdown, around this time last year, SWMBO asked me to cordon off the dish to avoid kids impaling themselves on screw rods and whatnot.

Today I finally made a start...

20210314_134114-1280x720.jpg

I have millimetres clearance between the bottom of the dish and the top of the fence so hopefully the dish won't crash into it one day.
 

Lazarus

Retired Moderator
Joined
May 29, 2009
Messages
27,078
Reaction score
8,664
Points
113
My Satellite Setup
80cm Motorised.
Several small Dishes.
Much else.
My Location
North York Moors
No, no, no: The philosophy is wrong, surely?

What you need is an enclosure for the children, not the dish.

Hope that helps.
 

Trust

Specialist Contributor
Joined
Jul 18, 2004
Messages
1,127
Reaction score
1,617
Points
113
Age
77
My Satellite Setup
1.8 m CM at SMR 1224 + Elev. with 7 lnb changer Ku (lin - circ) - Ka (lin - circ) C (lin - circ)
My Location
Nijmegen Netherlands
At the start of last lockdown, around this time last year, SWMBO asked me to cordon off the dish to avoid kids impaling themselves on screw rods and whatnot.

Today I finally made a start...

View attachment 135201

I have millimetres clearance between the bottom of the dish and the top of the fence so hopefully the dish won't crash into it one day.
SWMBO tried to say GET RID OF THOSE DISHES
 

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Joined
Jan 1, 2000
Messages
35,533
Reaction score
8,554
Points
113
Age
59
Website
www.sat-elite.uk
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK
At the start of last lockdown, around this time last year, SWMBO asked me to cordon off the dish to avoid kids impaling themselves on screw rods and whatnot.

Today I finally made a start...

View attachment 135201

I have millimetres clearance between the bottom of the dish and the top of the fence so hopefully the dish won't crash into it one day.
Those fence posts don't look high, or sharp enough to keep the chldren inside.
 

sonnetpete

Grumpy Old Retired Moderator and quiz inquisitor..
Joined
Dec 13, 2008
Messages
8,948
Reaction score
3,491
Points
113
Age
73
Website
wordpress.com
My Satellite Setup
Laminas 1.2M fibre dish with an IBU, on a Clarke Tech USALS motor, covering 57E - 24.5W to an Octagon SX88. Displayed on a 20" Dyon LED TV.

Seperate 80 cm dish on 28E with a Humax Freesat for SWMBO.
Free Sat V8 meter. Sony Bravia 46" LCD, Sony BluRay and Home Cinema.
My Location
Normandy, France

sonnetpete

Grumpy Old Retired Moderator and quiz inquisitor..
Joined
Dec 13, 2008
Messages
8,948
Reaction score
3,491
Points
113
Age
73
Website
wordpress.com
My Satellite Setup
Laminas 1.2M fibre dish with an IBU, on a Clarke Tech USALS motor, covering 57E - 24.5W to an Octagon SX88. Displayed on a 20" Dyon LED TV.

Seperate 80 cm dish on 28E with a Humax Freesat for SWMBO.
Free Sat V8 meter. Sony Bravia 46" LCD, Sony BluRay and Home Cinema.
My Location
Normandy, France
Top