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Swift Registry Reboot

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#326 Chuck Hards

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Posted 02 August 2019 - 02:48 PM

I agree that the mount is a little too small for the 839, but it's the 831 mount that I find awkward to use. I wish they would have just made a BIG version of the 838/839 mount for the 831.

 

Speaking of which, I think I'll grab my 838 right now and go peek through some sucker holes.

 

Yeah, I agree with you Ken, I've commented on the 831 mount problems before.  If the DEC slow-motion cable was parallel with the OTA instead of perpendicular to it, my major gripe would fade.  You just can't balance it in all orientations  because of this.  Otherwise it's not a bad mount.

 

It's the same layout that many mounts of the same period share, unfortunately.  

 

I'm not convinced that Swift had anything to do with the 838/839 mount, it is included with other brands of the day so obviously isn't a Swift exclusive.  I believe Swift just bought those from someone else and only started from scratch on the 831 mount, according to the accounts I've read.   

 

Lately I've just used my 831 on this all-purpose Edmund mount that I stuck on a very tall, home-made tripod.  This works well and is easy to balance.  If I ever add a Dec slow-motion, it will probably be a motorized full gear and worm.  

 

831 04 027.jpg


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#327 Terra Nova

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Posted 05 August 2019 - 08:07 AM

 

As far as 839 tripods go, I'll have to mod a tripod head and see if I can figure out whether mine should have a round or a square style legged one. I've seen them with both and so far it's been hard to determine if it's a year thing or is random? I have some extra round type legs that may work, but I prefer the look of the square ones. Decisions decisions. hmm.gif

Chris, I think the round legs go with the 831. The 838 and 839 had the same non-geared push-to mount (which I happen to like and think works quite well) and square legs as far as I know.



#328 Chuck Hards

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Posted 05 August 2019 - 08:28 AM

Terra, you don't remember the 838 I recently sold that came with the round legs.  Someone else had them on a non-831 as well.  


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#329 walter a

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Posted 05 August 2019 - 09:49 AM

My 838 has the round legs, restained one trying to get a color match that I was happy with.

Attached Thumbnails

  • DSCN1497 (640x477).jpg
  • DSCN1504 (640x480) (2).jpg

Edited by walter a, 05 August 2019 - 09:53 AM.

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#330 CharlieB

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Posted 05 August 2019 - 01:41 PM

My 1960 831 has square legs.


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#331 Kasmos

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Posted 05 August 2019 - 01:51 PM

Based on the samples I've looked at so far I haven't noticed a clear connection to serial#/date for the two styles of legs on 838-839s. That said, most 838s seem to have the square ones. It would be nice if the the scopes on the registry made note of it. Also, I could be wrong but it looks like the square ones are smaller (in their cross section), on the 838 compared to the 839. shrug.gif



#332 Ken Sturrock

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Posted 05 August 2019 - 01:55 PM

It would be nice if the the scopes on the registry made note of it.

 

The square legs seem to be the most common. If I'm aware of a round-legged 838 or 839 then I make note of it in the notes field. Other than Walter's (which I just got the serial number for) and Chuck's previously mentioned one, there are no others that I know of.

 

So, folks, If you have a round legged 838 or 839, let me know and I'll add the information.


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#333 Terra Nova

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Posted 05 August 2019 - 04:11 PM

That totally slipped my mind. I guess my memory was too focused on my 1960 model 839, (square legs).



#334 Spyke

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Posted 06 August 2019 - 05:21 PM

Hi,

 

I may be able to buy Swift 831 serial number 683039. It is the OTA only with a 12mm Kelner and the image corrector. As far as I can tell there are no other accessories, mount, box, manual etc. Although minimal, the OTA looks to be in good condition, so I'm thinking about it. I do like 80mm-class scopes and I am very fond of my 839 (which has the box, mount, etc) serial no 646041.

 

I'm just wondering if anyone here has any knowledge of the history of this scope, or has maybe owned it before? Long shot, I know. Funny thing is I was looking for an 8" Dob and then saw this... and heartstrings are tugging...



#335 Chuck Hards

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Posted 06 August 2019 - 08:46 PM

It's a very late serial number, only one of two known to start with 68XXXX, and both are in the UK.  Interestingly, the other one beginning with 68 is listed as being in Glasgow, with the previous owner in Newcastle.

 

I'd recommend jumping on it immediately, if priced fairly and the optics and mechanics are in good shape.

 

It seems most if not all Swift 831's sold in the UK were OTA's only, or offered on a Charles Frank (Glasgow) mount instead.  


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#336 Ken Sturrock

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Posted 06 August 2019 - 10:21 PM

Let us know if you give 683039 a home.


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#337 Kasmos

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Posted 07 August 2019 - 03:38 AM

Charles Frank mounted Swifts

Charles-Frank-Swift 831.jpg

Charles Frank Swift 3 Alt-Az.jpg

The Alt-Az version sort of looks like what you see nowadays....

 

....but Arthur Frank doesn't

Arthur-Frank-Swifft-cn.jpg

 


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#338 Spyke

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Posted 07 August 2019 - 03:45 AM

Let us know if you give 683039 a home.

I have!

 

For lot of reasons, I couldn't resist it. It looks nice, but the seller didn't really have any further information on the scope than what was in the listing (ebay in the UK), so a bit of a gamble? We'll see. 

 

Can anyone advise me of the tube diameter please, so I can see if I have any rings the right size?

 

I attach picture showing the serial number, but more details when it arrives, next week (God willing)!

 

Ant cool.gif

 

gallery_976_3555_14017.jpg


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#339 CharlieB

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Posted 07 August 2019 - 05:41 AM

Standard 76mm tube rings fit well.


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#340 Spyke

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Posted 07 August 2019 - 07:17 AM

Standard 76mm tube rings fit well.

Great, I think I have some here already.



#341 Terra Nova

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Posted 07 August 2019 - 07:19 AM

Charles Frank mounted Swifts

attachicon.gif Charles-Frank-Swift 831.jpg

attachicon.gif Charles Frank Swift 3 Alt-Az.jpg

The Alt-Az version sort of looks like what you see nowadays....

 

....but Arthur Frank doesn't

attachicon.gif Arthur-Frank-Swifft-cn.jpg

What cool mounts, and beautifully matched to their OTAs. They have an almost pre-classic- antique look. And look at those prices from back in the day when the British Pound Sterling was worth five crisp US Silver Certificated dollars.

 

Who the heck was Arthur Frank!? confused1.gif 

 

Or Charles Frank for that matter? :question:


Edited by terraclarke, 07 August 2019 - 07:27 AM.

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#342 Chuck Hards

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Posted 07 August 2019 - 08:33 AM

 

Who the heck was Arthur Frank!? confused1.gif

 

Or Charles Frank for that matter? question.gif

Owners of a telescope company in the UK, back in the day.


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#343 Spyke

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Posted 07 August 2019 - 08:43 AM

Owners of a telescope company in the UK, back in the day.

UK readers of astronomy magazines many years ago would be familiar with adverts for their mounts or other products. I was certainly already familiar with the name when I first started observing in the early 90s, although by that stage they were already being considered "old skool", though their items still turned up from time to time in classifieds or more traditional astronomical retailers stockrooms. 


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#344 Chuck Hards

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Posted 07 August 2019 - 08:43 AM

Spyke, the 831 will accept the Vixen 1.25" visual back, so you can use modern 1.25" eyepieces and diagonals with it.   Can't wait for your report, congratulations!


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#345 Ken Sturrock

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Posted 07 August 2019 - 08:47 AM

Who the heck was Arthur Frank!? confused1.gif

 

Or Charles Frank for that matter? question.gif

 

Whoever he was, he's my kind of guy.


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#346 Spyke

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Posted 07 August 2019 - 08:49 AM

Spyke, the 831 will accept the Vixen 1.25" visual back, so you can use modern 1.25" eyepieces and diagonals with it.   Can't wait for your report, congratulations!

Dang - I was literally just about to ask about this!!  

 

On my 839 I use a diagonal that has 0.96" barrel to fit the drawtube/visual back, and 1.25" eyepiece holder. But I would rather not be swapping it back and forth, so that's very handy to know.  Is there a specific part number for that or will a simple Google search find it easily enough?

 

:cool: 



#347 Chuck Hards

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Posted 07 August 2019 - 08:54 AM

Here is about the cheapest price on them I can find, shipping is typically only about two weeks:

 

LINK


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#348 Chuck Hards

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Posted 07 August 2019 - 08:55 AM

Whoever he was, he's my kind of guy.

 

Love that dour look.  And the suit- with handkerchief!   


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#349 Spyke

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Posted 07 August 2019 - 04:20 PM

Small technical question - can anyone tell me the length of the 831 OTA, ideally with a diagonal in place and racked in? Just so I can see what sort of padded case I'll need to have for it (all my scopes have to have a case).

 

Thanks!  :)



#350 Chuck Hards

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Posted 07 August 2019 - 07:05 PM

Small technical question - can anyone tell me the length of the 831 OTA, ideally with a diagonal in place and racked in? Just so I can see what sort of padded case I'll need to have for it (all my scopes have to have a case).

 

Thanks!  smile.gif

With the Vixen 1.25" adapter and star diagonal, mine measures 1,028mm from stem to stern.  You could lose about 50mm without the diagonal in place. 


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