Welcome to "RICKS SATELLITE WILDFEED & BACKHAUL FORUM"... ... ... Brought to you by "RICKS SATELLITE USA" - "Where the Big Dish Rules!"... ... ... In Association with "GOFASTMOTORSPORTS.com" ... ... ... Green Flag - Green Flag - Go Go Go ... ...

Forum Header Ad

This Forum is Brought to you by "Ricks Satellite"
www.RicksSatelliteUSA.com or www.GoFastMotorsports.com or call 816-228-1801
Your US Supplier for Free To Air Digital Receivers, Feed Horns, LNB's & LNBF's, Venture Made in the USA Actuator Arms and many other products!

"Now In Stock... The NEW SX88+ SE Octagon H.265 HEVC HD DVB-S2 Multistream Satellite Receiver!"
Great Receiver At A Great Price of Just $109.00 plus $12.50 for Shipping in the 48 Cont. United States!

Ricks Satellite Wildfeed and Backhaul Forum
Sign up Latest Topics
 
 
 


Reply
  Author   Comment  
signalquest

Registered:
Posts: 504
Reply with quote  #1 
All,

I am hoping to get the widest east to west range on my Arc as possible for my 10' BUD. 

I have an 18" actuator mounted on the eastern (left) side.  I have tried the actuator previously on the west side and I think my range to the west was very limited when the actuator was fully retracted.  But I might be mistaken - I previously had trees blocking me the last time I had it installed on the west side.

My location is at 75.7W longitude and I have no trouble seeing the eastern SATs I am interested in.  My trouble is seeing the western SATs.  I can extend the actuator to see 133W but the actuator gets stuck and cannot recover to back east without me physically helping it.  

I am hoping the incredibly intelligent and experienced forum members can offer suggestions on how I can modify the mount or actuator to allow me to see as far west and not have the issue I am currently dealing with.  Please see the attached pics to help visualize my situation.  Thanks in advance!   IMG_8031.jpg  IMG_8028.jpg  Untitled.png 


__________________
10' MESH w/ DMX241, and GBOX w/ Von Weise Actuator
1 meter KU w/ STAB HH120 rotor
PROF 7500 w/ Linux using UpdateDVB and TVHeadend
Voltaic

Registered:
Posts: 451
Reply with quote  #2 
Hi signalquest,

One thing that might help is install a little plate to bring the actuator mounting point a bit away from the center axis.

IMG_7688.jpg 

I'm at ~73W and I've got my actuator mounted on my "west" side. Pulled all the way in, I'm at my visual arc limit of 121W. Pushed all the way out, I'm at about 37W or 34W.


__________________
C-band: 10ft Perfect10 / Chaparral Dual / 2x Norsat 3120F / C2PLL LNBF (sidecar for Circular)
Ku-band: None (Future Project: Prodelin 1.8m Rx/Tx)
Switches: WNC-4x8
Tuners: TBS6925, TBS6902, TBS5022SE, DSR-6000, Cisco D9854

OTA: CM4228 / CM7777 / HDHomeRun EXTEND
signalquest

Registered:
Posts: 504
Reply with quote  #3 
Thanks for the reply.  Do I understand correctly that I would install the plate on the mount and not the dish?  What are the dimensions of the plate I would use?  I suppose I would need to custom make it in some way?  Is the picture you shared show the plate with the 3 bolts in it?  Looks to be 4" x 2"?  Would the plate limit any movement in the opposite direction when the actuator is fully retracted? Thanks.
__________________
10' MESH w/ DMX241, and GBOX w/ Von Weise Actuator
1 meter KU w/ STAB HH120 rotor
PROF 7500 w/ Linux using UpdateDVB and TVHeadend
RimaNTSS

Registered:
Posts: 471
Reply with quote  #4 
It is very well known issue @signalquest, named "flopping". There are several ways how to deal with it.
- yes, you can add metal plate to the mount, it can be dish, can be mount or both of them;
- you can add counterweight on the moving part of the mount;
- my favorite method is to add controllable mechanical stop to the mount, as I showed for example here https://rickcaylor.websitetoolbox.com/post/dish-past-limitflopping-over-5644725?highlight=mechanical+stop&trail=45
majortom

Avatar / Picture

Registered:
Posts: 5,994
Reply with quote  #5 
You have the actuator installed backwards
__________________
Perfect 10 7.5' mesh Chapparal C/Ku Co-Rotor feed, Norsat 8115 CBAND, Norsat 4106A Ku Thomson Saginaw Actuator, Vbox positioner,
Home Brew Polarotor683 Servo circuit. Openbox S9, Prof7500, v4l-updatelee linux drivers installed.
DB8E/VHF Yagi rotor FM Bandstop ap-8700 preamp 8way split LG lcd.
ricardo's geo-orbit archive: https://web.archive.org/web/20071202191450/http://www.geo-orbit.org:80/sizepgs/tuningp2.html

signalquest

Registered:
Posts: 504
Reply with quote  #6 
@RimaNTSS, wouldn't a mechanical stop only keep the dish from moving too far?  This would limit my range, correct?

@majortom, backwards meaning I should move the actuator to the right (west) side of the dish?  I would get better western range in this way?

__________________
10' MESH w/ DMX241, and GBOX w/ Von Weise Actuator
1 meter KU w/ STAB HH120 rotor
PROF 7500 w/ Linux using UpdateDVB and TVHeadend
Voltaic

Registered:
Posts: 451
Reply with quote  #7 
That’s correct. When I installed mine, I retracted my actuator in to its limit. Then I pushed it out maybe 50 counts. Then bolted the tip to my dish and then other to the plate. I then physically moved my dish to find my most western bird. Then I clamped Down my actuator. You can then find your most eastern bird and set the limit a few count pass it.

That’s how I set my actuator. The plate let’s you see a few more degrees without putting too much strain when pulling the dish back up. At least that’s how I understand it.

__________________
C-band: 10ft Perfect10 / Chaparral Dual / 2x Norsat 3120F / C2PLL LNBF (sidecar for Circular)
Ku-band: None (Future Project: Prodelin 1.8m Rx/Tx)
Switches: WNC-4x8
Tuners: TBS6925, TBS6902, TBS5022SE, DSR-6000, Cisco D9854

OTA: CM4228 / CM7777 / HDHomeRun EXTEND
brainz

Registered:
Posts: 204
Reply with quote  #8 
I modified my 10 foot dish to cover 40-139 degrees without flop over.  I moved the pivot point that the actuator bolts to the circle of the mount.  I used a 1/8 x 2 inch angle iron bolted across both pivot points on the dish.  This allows for the actuator to be used either east or west.  The angle iron extends 16 inches past the original mounting point on both ends. The angle iron bolts to the original east and west points where the actuator originally bolted.  I drilled holes in the 16 inch part 3 inches apart to allow for the best adjustment.  So all I needed to modify the dish was a piece of old angle iron and two bolts. This modification may work on your dish.  I am using a 24 inch actuator to get the range I am getting.untitled.jpg  untitled1.jpg  untitled2.jpg

__________________
Skybox F3, Motorola DSR922, DSR4410, DSR-6000 Channel Master 10' Fiberglass installed 1981
RimaNTSS

Registered:
Posts: 471
Reply with quote  #9 
Quote:
Originally Posted by signalquest
This would limit my range, correct?
No, mechanical stop must be adjustable, so it will stop the dish moving further than your far east/west satellite. It is even possible to remove actuator (for maintenance for example) and dish will stay tuned to satellite.
signalquest

Registered:
Posts: 504
Reply with quote  #10 
@brainz, thanks for replying and with pics.  Do you think you need a 24 inch actuator to get that range or would an 18 inch work as well?  I am assuming the 24 inch is needed since your actuator looks like it goes horizontal.  It also looks like your dish may hit the back of your actuator when fully extended?
__________________
10' MESH w/ DMX241, and GBOX w/ Von Weise Actuator
1 meter KU w/ STAB HH120 rotor
PROF 7500 w/ Linux using UpdateDVB and TVHeadend
rempfer

Avatar / Picture

Registered:
Posts: 1,250
Reply with quote  #11 
Quote:
Originally Posted by signalquest
It also looks like your dish may hit the back of your actuator when fully extended?
If you visualize how the back of the actuator moves as the dish is extended, you will see that it would be impossible for the dish to hit the back of the actuator.

Also, you should be able to estimate the fully-extended length an actuator would have to reach by considering how far the actuator's attachment points are from the dish and the mount and how many degrees, then, that the dish must rotate on its axis.
brainz

Registered:
Posts: 204
Reply with quote  #12 
Quote:
Originally Posted by signalquest
@brainz, thanks for replying and with pics.  Do you think you need a 24 inch actuator to get that range or would an 18 inch work as well?  I am assuming the 24 inch is needed since your actuator looks like it goes horizontal.  It also looks like your dish may hit the back of your actuator when fully extended?


I have 4 10 foot dishes and they all came with 24 inch actuators.  I use almost all of the 24 inch actuator range to get the full arc.  I would think you would need a 24 inch actuator if you want the arc that I get.  My actuator is mounted 14 inches back from the axis of the dish.  You could measure yours to see what you have.  The dish never hits the actuator since the actuator pivots away from the dish as the actuator extends.  I have included more pictures to show how the actuator is attached. untitled4.jpg  untitled5.jpg  untitled6.jpg


__________________
Skybox F3, Motorola DSR922, DSR4410, DSR-6000 Channel Master 10' Fiberglass installed 1981
Previous Topic | Next Topic
Print
Reply

Quick Navigation:

Easily create a Forum Website with Website Toolbox.

Fellow Members, your posts are welcome here! Do not worry about posting everything perfect. Different receivers and LNB's will give you different Frequencies and Symbol Rates. Some set top boxes, PCI cards and USB receivers, Do Not Require all of the same information that others may need. It is not Required to post everything that others may need to tune in a feed. It is just most important to share the find. We can always adjust the Frequency and Symbol Rates and try the various Modulations and FEC's on our own receivers until we get a lock and then give a polite reply with what works for your receiver, as that information might help others as well. We all appreciate the efforts and energy of the Posters!

Thank You for Visiting GOFASTMOTORSPORTS.com - Keep Your Eyes on the Sky and the Track!