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Equipment Discussions >> Reflectors

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Jarrod
Pooh-Bah
*****

Reged: 01/20/13

Loc: SE USA
Re: Orion XT8g new [Re: thetortoise]
      #5721313 - 03/08/13 10:19 PM

Weeeeellllllll, I called Orion two days ago and told them my problem with the focuser. Also the 28mm DeepView EP has a big tear in the eye cup (this scope was purchased as a 2nd). They transferred me to a tech support engineer who expressed his displeasure at some of the things he'd been seeing them ship out as 2nds - i.e. things with not only cosmetic issues but serious functional/condition issues like what I'm experiencing. The engineer asked me to write it all in an email so he could take it to someone else as an example of how not to ship product to customers.

So I did the email, and got nothing but silence. After 24 hours went by, I emailed again. Still nothing. After 12 more hours went by, I phoned and was put off yet again. I have to say at this point I'm more than annoyed with Orion.

So I decided I had nothing to lose, so I disassembled the focuser to see if I could figure out what's going on with help from the forum, and elsewhere online.

It turns out there were *two* problems. First, the friction track on the draw tube was not flat, but concave. So the crayford shaft was riding on just the two outside edges of the track and this was producing the grinding noises. This has been reported on the forum before. Also, the tension adjuster was not working right because one of the two parallelizing screws had been cross-threaded at the factory, so the teflon bearing was COMPLETELY out of whack. So I removed the tube and lapped the friction track with a whetstone until it was truly flat. I also fixed the threads on the teflon bearing by running a screw all the way through it from the backside a few times. When I put it all back together it works much better now. However, I note that my focuser did not have the rubber o-rings depicted in the document I linked to above. Is it supposed to? I also somehow managed to lose one of the locking screws while I was working on it. Don't ask me how, I was in one place the whole time...

Edited by Jarrod (03/09/13 09:24 AM)


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Jarrod
Pooh-Bah
*****

Reged: 01/20/13

Loc: SE USA
Re: Orion XT8g new [Re: Jarrod]
      #5721372 - 03/08/13 11:18 PM

I also tightened the set screw on the course adjust knob to keep the crayford shaft true to the bracket itself. Also had to tighten the set screw on the fine adjust knob to keep it from slipping. Now the draw tube holds several pounds of weight without sliding down, and both focus adjustments operate buttery smooth. Night and day to the way it shipped from Orion. There is really no excuse for that. Now that it's properly setup, it's a really nice focuser. Out of the box it was garbage.

Edited by Jarrod (03/08/13 11:25 PM)


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TexasRed
scholastic sledgehammer


Reged: 05/17/11

Loc: East Texas
Re: Orion XT8g new [Re: Jarrod]
      #5721547 - 03/09/13 03:03 AM

I've never had your specific problem, but my previous experiences with Orion's customer service make me expect them to offer to send you a new focuser.

Add a fan, upgrade the finder, and you'll have a great scope!


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Jarrod
Pooh-Bah
*****

Reged: 01/20/13

Loc: SE USA
Re: Orion XT8g new [Re: TexasRed]
      #5772486 - 04/02/13 10:07 AM

I told Orion I'd fixed the focuser (which works like an absolute dream now) but lost a screw in the process. They sent me a replacement screw, a new eyecup, a fresh manual, and their thanks for fixing the focuser. They also sent me the PC cable - this particular "2nds" scope didn't come with it.

Now I have an intermittent issue with the handset, which occasionally reboots itself, sometimes screwing up the LCD contrast setting in the process. And the RDF will not align with the scope even with the adjustments maxed out. So I'll have to log a call with them for these issues. Overall I'm not too pleased with the "2nds" process at Orion. I saved 20% but inherited more than that in headaches, many of which could and should have been detected and fixed before they shipped. I'm confident I'll get it all worked out, but it's taking a lot of time and troubleshooting...

Still, this is a great scope and I'm happy with my choice. But if I had it to do over, I'd have bought a fresh one at full price. I incorrectly assumed that Orion would have gone over and "refurbished" this one before sending it out. That appears not to be the case, or at least whatever process they do put it through doesn't cover enough detail.

Edited by Jarrod (04/02/13 10:10 AM)


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