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17' BUD Ideas?

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With something that heavy, I wouldn't even consider a polar mount on a pole. But a tripod mount. One leg is the polar pivot. 1/2 hp DC motor via reduction to move. a rotary encoder to provide the pulses to the gbox. gbox controls relays between 1/2 hp motor and a suitable power supply for motor, and also disengages the position hold brake. (DC motor could be AC if internal wiring is accessible to reverse rotation) (Drooling just thinkin about havin a dish that size in the yard) And if the neighbors wonder why so big, tell 'em ya got connected to ET but was a bit scratchy on your smaller dish. So -----
 
Counter Balance

Everyone seems to over looking that you can reduce the drive problem by adding a counter balance. It's possible to use a drive that is less powerful by adding a weight a few feet behind the pivot point to off set the weight. I used a H2H mount many years ago on a Laux Beta 9 8 panel solid metal dish. The drive was for an 8 ft mesh dish that weighed at least half what the Laux did.
 
I took 5 Andrews 10 footers down for local cable company in the late 90's for 400.00 each they kept them I removed and delivered them to the cable company from different locations rented crane for the morning went around lifted them off and hauled them back to them took about 5 hours then went back and cut off poles was done in one day crane cost 50.00 an hour back then.
 
Sounds like a great idea. Any photos?
 
a few pix ideas

A fellow in Poland (?) posted some pictures of his new 3.7m Prodelin and how he installed it.
Unfortunately, his web site is now totally devoted to cute fluffy little dogs, and all dish info is gone.
Here is one picture, showing his counter balance.
The pix aren't too big, so if anyone wants to see the entire collection, I can post.

The second shot is an old 15' United Satellite.
It's a molded fiberglass similar to the one on my local Post Office.
I think you can see how the mount is tilted back about equal to the latitude, and some declination offset is apparent, too.
I've seen similar pix where a large-throw jack runs 'em back 'n forth.
edit: oh, look close - he's got one! -
With a little imagination, you could implement this design quite easily.
Conceptually, it's a lot like the little Ku motors.
 

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I just have to ask.....At what point does the word "OVERKILL" come into play?
 

I will check that out and see if the holes were field drilled. Did you notice the "scalloped" edge on the rim of the dish? I wondered if that may give a clue as to the manufacturer.

As in: Is it going to Rain?

That's what I learned this summer during a 12 car ride

Ah, I get it now. You need to spend some time down here in Hillbillistan, we'll teach you all the farming lingo...may even take you on a snipe hunt!


Thanks for the thoughts and the offer, Captain, you would definitely be one I would like to consult with if I got this thing and wanted to go with a polar mount. I've seen your fab skills in the pics you have sent me, just incredible work. :up


I have a 10' solid that uses the "polar tripod" setup, another future project, thanks for the ideas. Still waiting for someone to tell me what "neighbors" are?


Thanks for the thoughts and pics, whatchel1. I have never been able to get my head around the concept of a counterweight, always seemed that what it would gain you in one direction, it would cost you in the other, I would have to play with one to understand it.

It will definitely give you some serious bragging rights, fixed or otherwise.

It would be a fun project either way, but I think tonydix has us all whooped with his 24 footer down in Central America.


Nice score there, tvro. I am looking at this as a project to make a few bucks on the removal, and if I can reuse the dish that would be great.

A few pics ideas.......

Thanks for those pics, Anole, that one of the tripod mount gave me some GREAT ideas for my 10' solid "Drake" dish.

I just have to ask.....At what point does the word "OVERKILL" come into play?

I'm not sure what the answer to that one is, sergei, but I'll let you know when I figure it out.
 

A counter balance will give equal pressure on the actuator all the time. If weight in front is nearly equal to the weight in the back (counter balance) then it wil run very smoothly and take much less force to move the dish.
 
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