Minor Slippage On Twist Lock

[Scopeman]

I just got a new WO diagonal and an OVL twist lock adapter. Is the twist lock supposed to lock the diagonal solidly or enough to stop it falling out but allow you to move the viewing angle of the diagonal, because you can twist the diagonal when locked, or is there something wrong with it? Any remedies? Problem seems to be centered around the smooth insert locking ring slipping either on the barrel or on the inside of the twist lock. Any help would be appreciated.

Edited October 21, 2022 by Scopeman

[Scopeman]

UPDATE: For anyone who may have the same issue, spoke to RVO where I got this from and apparently it is faulty, they should lock the ep with no movement unless released.This goes for any twist lock adapters, so if you ever get one like this return it as it should not behave like this.

[Nightspore]

I'm not so sure. 

[Scopeman]

?  They should behave exactly the same as Baaders do and they don't move at all and that's what they said.

Edited October 23, 2022 by Scopeman

[Nightspore]

The twistlock on my Long Perng dielectric is the same. I can turn an eyepiece barrel in it tightened, but I doubt I could pull it out easily. From what I've been told all the Long Perng twistlocks are the same. I don't know how familiar Adam (RVO) is with these twistlock adapters. I have at least a couple of GSO twistlocks that are the same. I honestly think it's some sort of design flaw or at least an acceptable tolerance. Admittedly my Baader and Takahashi twistlocks tighten properly, but they were more expensive. Of course, I may be wrong and the twistlocks are all borked.

[Scopeman]

He is going to check the replacement that he sends so if it locks properly I will let you know. From wha I can see the smooth plastic locking ring sits in a smooth channel inside the twist lock and they both slide on eachother.

[Nightspore]

It will be interesting to hear what happens. I may try to pull my 15mm Luminos out of the Long Perng tightened twistlock just to see if it can be done. lol

 

[Scopeman]

As I said there was no issues with it pulling out at all, the issue was being able to twist it from left to right. I thought maybe it was for positioning the ep but apparently not. You have so much gear, do you actually use it all?

[Nightspore]

I just wondered how safe my Long Perng dielectric would be carrying a heavy eyepiece. I don't have that much gear and none of my telescopes are particularly expensive. Over the years I've accumulated a few eyepieces as my observing habits have modified. The trouble with being crippled is that I have limited options. Notwithstanding my new health issues. 

[Scopeman]

Your dielectric won't fall out with a heavy ep but it may show signs of sagging if you're not careful. My replacement is due tomorrow so I'll let you know if it works after being 'checked' or not.

[Nightspore]

I'll have to see. 

 

 

I can see it being consigned to the skip of despair.

[Scopeman]

it has the recess where the barrel joins the body, so that'd stop it falling out completely. I contacted RVO and the replacement has been checked and doesn't slip by all accounts, should arrive tomorrow, so we'll see.

[Nightspore]

I'm not a great fan of undercuts, although sometimes there are advantages.

 

 

The Everbrite undercut above hangs in the Baader adapter allowing me to turn the diagonal safely with one hand. Good luck with the replacement.

Edited October 24, 2022 by Nightspore

[Scopeman]

That is why I was wondering if it twisted to allow the diagonal to be moved, but apparently not.

[Nightspore]

The difference is that I can tighten the Baader completely. In fact it has a vice-like grip when tightened. I loosen it enough to easily rotate the diagonal. There is a good gradation of grip. If I get the friction balance just right I reach a tightness that allows me to rotate without the diagonal pulling out. I wouldn't have expected a twistlock to have the same finesse; even a Baader.

[Scopeman]

UPDATE:  Got the replacement twist lock yesterday and to confirm the new one does not slip, therefore the original one was faulty and the diagonal should not twist from side to side once the twist lock has been locked.

[Nightspore]

1 hour ago, Scopeman said:

UPDATE:  Got the replacement twist lock yesterday and to confirm the new one does not slip, therefore the original one was faulty and the diagonal should not twist from side to side once the twist lock has been locked.

 

Well that's a relief. 

[Scopeman]

Yep, solid as a rock this one, must be something to do with the insert piece.

[Nightspore]

It's probably some QC tolerance issue. 

[Scopeman]

Good tolerance and no tolerance or more likely no QC at all.

[Nightspore]

Sounds about right.

[Scopeman]

I thought this group was more active than it is. You can get a fair amount of views but very few comments, the original group that this came out of (Dione's old site) was much more active.

[Nightspore]

Most of the regulars here are into AP. There are only one or two who are strictly visual. 

[Scopeman]

Shame, but you don't seem to get any comments on gear, so even into AP you still have to use a scope amongst other things. Seems a bit too niche if that is the reason for me. I don't use FB so do you know of any other active groups at all?

 

[Nightspore]

I tend to avoid other astro forums, SGL and Cloudy Nights particularly. Astronomy Connect is good but a little quiet. I'm the highest poster there.