Message for rimantss

dreambox1959

dreambox1959

Specialist Contributor
My Satellite Setup
Octagon SF8008 - technomate 7100
My Location
france
hello i have got a AJAK H180 motor with a CM180 , i try to restore it , do you know how to remove the endless screw ?
do i have to cut some welding or piece of steel ?


demont.webp
 
Hi! I have no idea. I did not manage to remove it. I think it was assembled and then welded.
 
I will check the one I have sitting in the shed tomorrow, though I might have to row across the garden to get to it.
 
It's welded to something much bigger, a Patriot backplate / canister.
 
Could there be a couple of roll pins holding it to the shaft? Maybe covered up with paint, or some sort of rust preventive sleeve??

And by the looks of the end it could be pressed onto a spline, the hole at the back of it looks to be a centering point for some lath work, a gear or bearing press may be needed to push it (the shaft) out the one end.

Look at the ends of the internal worm gear, see if there are any splines or key-ways, if so then it's a press fit.
 
My dinghy has been washed away, so I'm not going to be able to check on the press fit (or other) of the shaft until tomorrow when I fabricate a coracle out of the 3.1m Intelsat dish.
 
hi every one who have a CM180 !
what is the value of offset angle of this dish ?
by measurement i have got either 27° or 63° is it right ?
 
i have this polar mount and an ajak 180 but all is unmounted
angle = offset + declinaisonmes1.webp
 
i just want to know the difference between this dish (offset) and a prime focus !
it s for build a modified polar mount .Offset.webpprime.webp

for calculation just use trigonometry!

h1=55 h2 =27 L1(cos1) =55 ====55-27=28(sin1) atan (28/55)= 27°mes2.webp
 
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Or even easier?
sin(angle) = (h1-h2) / L1
so angle = asin ( (h1-h2) / L1 )
(So for angle = 27*, L1 must be 61.7? )

That 27* is declination angle + offset angle, as you wrote.

So you can trust the above value of 22.6 offsetangle; that is calculated by width and hight of the dish.

Greetz,
A33
 
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i had take better measurements : offset+declinaison is adjustable from 22° to 27° ! (with this polar mount from channel master)
but in france where i live declinaison is about 7° (6.5 to 6.91)
if CM180 is 22° offset : i need 22+7 = 29° minimum ???
 
@dreambox1959 CM180 has 22.6* offset angle, take is as axiom. And offset angle can not be changed, it is built-in by manufacture. I think you have drowned in the issue of wrong positioning of the feed. The issue is simple.... CM has made feedarms and LNB-holder in the way that they do not hold the feed (LNB ) in proper position and not properly point it towards the surface of the dish.
And when we add the polar-mount to the system whish is already has too many mistakes then we finish with totally messed-up construction.
My advice to you would be: make sure the feed is placed and pointed correctly and then start to adjust the polar-mount.
 
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thanks rimantss this dish was a gift from a english guy who live in france but the mount is rusted , the whole dish is correct i have arms (lnb holder) for ku and C (2 set of arms) and 2 feedhorn especialy a big one for C-band.
these days i build a new polar mount based on AJAK-h-180 i ll post some pictures soon.
 
@dreambox1959 congratulations, you've got one of the best dishes possible. As far as I know CM did not make LNB-holder for C-band LNB. Could you, please show some pictures of the hardware you have?
 
just in case lnb arms don t came from channel master , what is length of original arms ?
i got the dish with this feed :
Channel Master C Band feedS.webp
 
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