actuator sizes

wod

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1m channel master, jaeger smr1224, Inverto black ultra twin, technomate tm-1500ci, broken receiver vantage x221ci, New additions Skybox F5s and technomate tm-5402 HD arriving soon.
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yorkshire
I've won 2, 12inch superjack actuators on ebay and have arrived today

they are much bigger than 12inch more like nearly 24 when fully extended

so why say they are smaller than they really are ?

has it always been like this as glad i didn't bid on the 18inch ones as they would have been overkill for a 1metre andrews dish i'm going to use on

is there anything i need to do on them before fitting or can i just bolt on the polar mount and wire up and away i go ?

thanks

wod
 

michael01707

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Channel Master 1.2m and 1.8m, Vantage VT-X221TS CI and 8000s, Technomate V-Box II, 18" Superjack actuator
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I also had no idea what size actuator arm I needed, you can see from this post. The actuator in that photo turned out to be a 12 inch arm. On that 1.2m I could get from 30w to 33e with a 12 inch and on my 1.2m channel master I can see from 30w to 45w with an 18 inch.

I think the quoted size is measured by how much the actual arm extension is.

You don't need to do anything before installing but my advice would be to wire it up first before attaching it to the polar mount. Also work out what you want your most westerly satellite to be as you will want to attach your arm completely retracted whilst the dish is pointed to that satellite.
 

Llew

cerca trova...
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Yes, the quoted length is the reach of the piston. When you clamp it to the mount at the piston end, you have the 12" piston movement to move your dish.

I had tables with my SMW installation to work out the arm length to unscrew to before mounting, the length depending on my azimuth angle. This gave me the correct EW reach across the arc when finally installed.

Llew
 

Topper

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I never did that with my converted wiper motor, I wonder why I have been on the arc for the last 20 years :confused
 

CROSSBONES

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is there anything i need to do on them before fitting or can i just bolt on the polar mount and wire up and away i go ?

Don`t forget to set the limits inside the motor after you have connected it all up;)
 

stocksie

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Dont allow the piston to rotate if you power your actuators while off the
dish. I use a long screwdriver through the end UJ.
 
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