Go Back   IceInSpace > IceTrade Classifieds > IceTrade Archives
Register FAQ Calendar Today's Posts Search

 
 
Thread Tools Rate Thread
  #1  
Old 16-08-2011, 08:49 PM
Profiler (Profiler)
Registered User

Profiler is offline
 
Join Date: Feb 2009
Location: Sydney
Posts: 1,217
Rack & Pin focuser shaft - Any condition

I have an old Vixen 80mm refractor but unfortunately the focuser pin has been bent. Unfortunately, obtaining Vixen spare parts for such an old scope is not an option.

Consequently, I am trying to get my hands on any type of old fashioned rack and pin focuser that can be found in old ED80’s etc as I am simply after the actual focuser pin inside that might be able to fit and replace the bent pin in my original Vixen.

A few pictures are included to better illustrate my problem

If you have anything that might fit please send me a PM
I will consider anything right up to buying an entire scope (provided it is cheap enough)
Attached Thumbnails
Click for full-size image (Pin1.JPG)
45.7 KB11 views
Click for full-size image (Pin2.JPG)
88.6 KB13 views

Last edited by Profiler; 18-08-2011 at 02:38 PM.
  #2  
Old 17-08-2011, 05:46 AM
gbeal
Registered User

gbeal is offline
 
Join Date: Oct 2004
Location: New Zealand
Posts: 4,346
It's reasonably common. Take it to an engineer, and get them to straighten it, if a dial gauge is used it will be as good as you need/want.
Gary
  #3  
Old 17-08-2011, 06:10 AM
f.robert (Robert)
Registered User

f.robert is offline
 
Join Date: Jun 2009
Location: Wollongong
Posts: 70
Quote:
Originally Posted by Profiler View Post
I have an old Vixen 80mm refractor but unfortunately the focuser pin has been bent. Unfortunately, obtaining Vixen spare parts for such an old scope is not an option.

Consequently, I am trying to get my hands on any type of old fashioned rack and pin focuser that can be found in old ED80’s etc as I am simply after the actual focuser pin inside that might be able to fit and replace the bent pin in my original Vixen.

A few pictures are included to better illustrate my problem

If you have anything that might fit please send me a PM
I will consider anything right up to buying an entire scope (provided it is cheap enough)
Im going to be selling this , If its any good.
Attached Thumbnails
Click for full-size image (jenson photos 1488.jpg)
199.8 KB14 views
Click for full-size image (jenson photos 1487.jpg)
198.0 KB14 views
  #4  
Old 17-08-2011, 07:37 PM
Profiler (Profiler)
Registered User

Profiler is offline
 
Join Date: Feb 2009
Location: Sydney
Posts: 1,217
Alas - no luck with Roberts focuser which turns out not to be a rack and pin focuser but one of the newer rubber wheel type.

Consequently, I have added another picture of my bent pin with a few measurements of the various sections - so - to recap - I am looking for any old focuser which features an old rack and pin focuser from any brand that might come close to these measurements.
Attached Thumbnails
Click for full-size image (pin3.JPG)
92.4 KB23 views
  #5  
Old 18-08-2011, 02:39 PM
Profiler (Profiler)
Registered User

Profiler is offline
 
Join Date: Feb 2009
Location: Sydney
Posts: 1,217
Bump

I am open to any suggestions - including buying any old synta type scope (if cheap enough) simply to get my hands on the focuser shaft
  #6  
Old 18-08-2011, 03:31 PM
jenchris's Avatar
jenchris (Jennifer)
Registered User

jenchris is offline
 
Join Date: Nov 2010
Location: Ormeau Gold Coast
Posts: 2,067
Take it to a lathe owner - as suggested above - they can straighten it in a few minutes tops - I know I could (any good fitter could probably do it without a lathe)
Pop it in a decent drill chuck and see which way it wobbles and 'ease' it back towards the concentric.
  #7  
Old 18-08-2011, 03:46 PM
Profiler (Profiler)
Registered User

Profiler is offline
 
Join Date: Feb 2009
Location: Sydney
Posts: 1,217
Thanks for the advice - I am certainly heading in the direction of repair but I just wanted to see if there was a spare floating about.
 

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 01:09 AM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Advertisement
Astrophotography Prize
Advertisement
Bintel
Advertisement