Motor mock up problem

[Baj1936]

Hi

I'm new to motorized dishes and I've just bought a Jaeger 99G H-H motor.
Have just set it up in the garage to familiarize myself with setting it up.
It's mounted on a vertical pole and the rotating axis of the motor is factory preset to zero degrees. The dish is facing south (not necessary as it's in the garage but I did this so that when I eventually played around and applied power to the motor, I'd know west from east).

Obviously in the north/south direction the rotating arm is not vertical (depends on latitude).

In the east/west direction I would have expected it to be vertical - but it isn't. It leans 2.5 degrees to the west (easily seen by eye and measured with an inclinometer (the accuracy of which I have checked). There is no mechanical play as I've tightened all the nuts and bolts and I'm sure that I've assembled it correctly as the supplier provided clear instructions and photographs.

Is this right or is something wrong with the motor?

Any help/comments greatly appreciated.

Baj

[BlackHawk]

Have you connected your receiver to your motor and sent the dish to zero or reference?
BH

[Baj1936]

No. The instructions with the motor state that it is factory preset to zero degrees. 2.5 degrees is a great difference from 0 degrees. The scale on the motor reads 0 degrees. I am reluctant to connect the motor as doing this may well give the supplier reason not to replace it.

Please, would someone confirm whether or not the rotating arm should be vertical in the east/west direction, or not.

[wod]

what do you mean the pole the dish fixes on is not straight and damaged ? or you mean there is abit of play in the motor as 36volt motors should self tighten any play in the motor once its used

[Robbo]

Hi,

If the pole is vertical, and the motor is mounted onto it straight, and the motor is at 0 degrees, then you are correct,
it should be vertical in the east to west plane. Is the face that the motor stub is connected to level?

Is the motor stub bent in the wrong direction?

[Jimdefruit]

That motor does not look at all right to me but it may be the picture angle. Can you show another picture takes from the east or from the west?

[Baj1936]

Hi

@Jimdefruit - The previous photos were from the supplier of the motor. Below is a photo looking south.

@robbo71 - Thanks for confirming that it should be vertical. I can see nothing wrong with the motor arm/stub. It appears that the motor zero is way out.

@wod - everything is bolted up firmly. There is little or no play. Mechanically this motor appears to be first class.

@All of you - many thanks.

Baj

[Baj1936]

More pictures looking south:-

[BGonaSTICK]

Very interesting, and I agree that to look at the output shaft you would think that there is something wrong. However, unless there is any physical damage I would suggest that there is simply a discrepancy in the neutral shaft alignment/azimuth-scale zero. A manufacturing fault? Don't know. It does seem a big difference.

Whilst this may be disconcerting, especially on a new motor, It probably won't cause any problems during operation. IMO the arm should be sent 'vertical' when you're aligning due-south for real, and the scale should be allowed to go 'out' slightly. You won't really be using the scale. It's pretty redundant.

If you are at all concerned (and if it were me, I think I'd cover myself regardless) I would contact the supplier before you do the install proper, and either send it back, or agree that if it causes you any grief that you can return it under warranty. Send them to this thread if you like.

STICK

[Baj1936]

Sorry been busy - missed your reply.

Had a long discussion with the supplier in which he pointed out that the mounting tube is only bend for mechanical convenience, that everything connected to the motor shaft moves in unison so that the important thing when intially installing the motor is that the plane of the dish be at exactly 90 degrees to the body of the motor. The motor should then be bolted onto the pole such that the axis of the dish points exactly at true south. (which of course is done by finding Thor 1W and then turning the motor on the pole slightly east (which at my longtittude (1.08E) in the case of a 50mm. diameter pole is 0.9mm. on the pole circumference).

I agreed with him and tried it on the mock up with no problems.

As far as I can see this is in agreement with your comments.

Do you agree?

Baj