arc tracking problems

[arden]

hello

ok ive set up lots o motors without problems b4 but always used stab

my stab HH120 motor was tracking the arc 100% using this pole and dish
but packed in a few weeks ago

ive replaced it with a dark motor and having real problems getting it to track the arc

now is the best ive had can get from 1 west to 28 east without problems

but when it gets to 39 east the dish is to high left to right its spot on if I drop the dish to get 39east them put all the others out

the pole is vertical need ideas on whats wrong with my set up as its driving me crazy

[Robbo]

What is it like on the western side?

If it's too high there as well, then the arc is too shallow, you will need to steepen it slightly.

To steepen the arc you increase the elevation of the motor and lower the dish.


If the dish is too low on the western side, then you arc is wonky. As the pole is vertical, the cause of the wonkyness is most likely due to the dish not being on the motor straight.

If the dish is slightly east on the motor stub, the dish will be too low on the easter extremes and too high on the western. The other way round, if the the dish is slightly west on the motor stub.

[arden]

thanks for the tip my gut feeling is you are right about it not been 100% on the motor stub

will try again later this week