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Busted Vixen Portamount. Parts?

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#1 Bugsi

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Posted 15 August 2009 - 01:01 AM

The shaft of the azimuth wormgear on my Vixen Portamount snapped right off, the stub remains stuck in the slomo hand control knob. I bought a new Antares Slo-mo control for $10 from Agena Astro here: Antares control knob

Since the azimuth worm gear has a shaft sticking out of either side of it, I can use the Antares control on the other side of the shaft, but it points away from me as I use my scope, and I'd like to replace the worm gear/shaft assembly part if that part is available as a replacement part.

Anyone have experience working with Vixen on parts like this? Is this part user-replaceable? Should I just live with it and use the Antares cable on the remaining shaft facing away from me?

#2 Martin Lyons

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Posted 15 August 2009 - 01:22 AM

See if you can't dismantle the worm assembly and turn the worm around so that the shaft points toward you.

#3 Bugsi

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Posted 15 August 2009 - 06:30 PM

That's brilliant, actually. I'll do that!

#4 Bugsi

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Posted 24 August 2009 - 01:58 AM

Okay, so tried to do that. It may be possible, but not without some more information about how the Vixen Portamount head goes together. It has an unusual fastener down the center axis, it looks like it has a roll pin pressed into a keyway or something.

If nobody here has any insight into further disassembling the Portamount's head, I'm going to look into checking with the local Orion store, since Orion is now dealing Vixen. The only positions I can mount the head leave the azimuth control aiming away from me.

#5 SATMAN

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Posted 24 August 2009 - 09:09 AM

Remove the mounting head, the part that has the dovetail adapter,Remove the two bolts with the allen wrench.

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#6 SATMAN

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Posted 24 August 2009 - 09:10 AM

removed plate

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#7 SATMAN

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Posted 24 August 2009 - 09:12 AM

rotate the mount part with the cables 180 degrees so the good shaft faces you

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#8 SATMAN

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Posted 24 August 2009 - 09:16 AM

reassemble the head to the part on the mount after swithing cables picture shows cable in old position. Try not to over tighten the tension adjustments on the side of the mount only adjust till it holds the scope without movement slide the scope back and forth in the dove tail to find the balance point tighten the adjustment locks for the optical tube assembly. Remember this mout is only rated for about 15 lbs maximum load!

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#9 SATMAN

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Posted 24 August 2009 - 09:18 AM

This is what my system looks like, if it is still under warranty try to get a replacement. If not this should work for the time being

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