Mike M

4 minutes ago, mbalkham said:

I wish i got down to 0.5-0.7". I'm nearly there now. I did the belt mod, bearings superlube but am still some way off. Any tips?! 

I'm cheating a little I'm using 1s exposure times on phd2 with the ZWO OAG and Orion SSAG.  What FL are you running at? Are you using an OAG or guidescope? 

8 minutes ago, mbalkham said:

Excuse the crying baby in the background!

Ahh perfect thank you - that's exactly what mine is doing.  That makes me feel a lot better! I'll put the 10" on it during the weekend, balance it and give it a slew to make sure all is good.  We've got clouds and rain for the next 2 weeks so can't test for a while. 

32 minutes ago, wimvb said:

Does it fit the AZ-EQ6 GT?

I think it's only for the NEQ6 Pro unfortunately

Cheers, Mike

32 minutes ago, mbalkham said:

Yes mine moves as you describe. I cant adjust it out. I figured it was supposed to have some movement as the spring compresses? Tightening the 5 locking screws that attach the mechansism to the casing did help a little.

Ok cool thanks mate.  I had super tuned my NEQ6 Pro years ago with the belt kit + bearings + super lube etc and always got reasonably good total oscillations of around 0.5-0.7 with a 10" F5 (4 counterweights) in my observatory, but of course wanted better backlash control and didn't want to spend $8k on an EQ8

Cheers

7 minutes ago, Peter Drew said:

Worm movement up and down isn't backlash, it's end float.  This too is adjustable and needs to be adjusted.     🙂

Nahh it's not the end float, I adjusted the locking ring to stop the end float and there's zero float.  I'll get a video of it tonight and show what I mean.

Cheers, Mike

On 08/06/2020 at 19:56, mbalkham said:

I've installed this mod today and preliminary results are showing a slight improvement but not quite what I was hoping for right out the box. Needs a little more tinkering. Well built and install was pretty straightforward. Adjustment not as easy as the instructions would have you believe and still rely on feel. Not sure if I'm expecting too much under the load I have on it (20kgs of OTA and 15kg counterbalance!). Will try under less load another night. 

Also waiting for Geoptik counterweight upgrade to stiffen that connection. 

I also just received this from Rowan and finished fitting this morning.  Quick question - with yours when you move the RA left and right with the clutch locked and the end caps removed, do you see the whole worm assembly moving up and down? I feel like with mine it moves way too easy after adjusting out the backlash.  I can easilly push it with 1 finger with minimal force left and right which causes the worm to move up and down when viewing without the end cap. I'm going to have more of an adjustment over the weekend.

Cheers