actuator

[dreambox1959]

some guys said: you can't find a v-box positioner, but these days I'm looking for an actuator, strong enough and 10 inch or less. (this is for the declination on my 2m prime) I only find a very thin actuator, I have many old 18 or 24 inch actuators but it is too long for this use.
I find out an interesting thing about the actuator: the worm inside is still imperial size and all of my 18 and 24 actuators are 8 turns per inch, the smallest is 13 turns per inch: it is called 8UN or 13UN.
with the reed sensor and counting each change of state I get 8 pulses per revolution so it's 64 pulses / inch so you can calculate each sat position.
PS Can someone sell me a short powerful actuator?

 

[Channel Hopper]

What size of actuator do you think is suitable, 12" or shorter ?

Once you go below 12" the size of everything (shaft diameter/rose joint/clamp bolts) is about 60% of the full size

Is there no dealer in France selling actuators, shipping from outside could be prohibitive.

 

[dreambox1959]

What size of actuator do you think is suitable, 12" or shorter ?

Once you go below 12" the size of everything (shaft diameter/rose joint/clamp bolts) is about 60% of the full size

Is there no dealer in France selling actuators, shipping from outside could be prohibitive.

of course , the great dealer in south of france (bruno from 2galli) sell only a big 36 inch (perfect for azimut) every where they provide usals motor .
"shipping from outside could be prohibitive" especially from usa i havent test it from UK , rest of EU can be OK.

 

[ozumo]

I'm not familiar with the innards of actuator tubes but could it be possible to shorten them?

 

[Trust]

Its possible !

 

[moonbase]

Any good?

A 5V source is needed for the optical switch. Some v-boxes have a red connection for a 5V supply

For Sale - 8" Optical Actuators (Brand New & High Quality)

Hi, I have a few 36 volt 8" optical actuators for sale that are brand new. They are made by LINAK and are high quality, the model number is Linak LA30. I contacted LINAK UK with the part number and was informed they were no longer in production. However, when they were in production they were...

www.satellites.co.uk

The original advert stated delivery was included in the price, however, for overseas delivery there would be an extra postage charge

 

[Terryl]

Try looking for a linear actuator for a hospital bed, their short and strong, but I don't know if they are outdoor rated. (if your moving a dish with it)

 

[dreambox1959]

Try looking for a linear actuator for a hospital bed, their short and strong, but I don't know if they are outdoor rated. (if your moving a dish with it)

i got some piece (hospital bed) but there is no encoder (reed or pot) finally i follow trust idea : i take a 18 inch actuator and i cut it !!
some pictures soon ...

 

[Trust]

Go for it !!

Adding declination control (Fibo 90)

Just a mock up at the minute, built from stuff I had laying around. No actuator yet either. A DARL 3608 or 3610 should be good. Before: Parts: In situ:

www.satellites.co.uk