141 replies to this topic

[Greenflash1]

Hi!

I’m in the process of rebuilding a Tasco 7TE, including stripping and powered coating mount parts, OTA, and replacing missing or damaged parts. The Bakelite body of the porro erecting prism is damaged beyond repair, so I’m reaching out to this forum. I have other Porro erectors but they are too big for the wooden case. Need the narrower one for the Tasco 7TE 910 mm. This has the 36.4 mm threaded end and the 0.965” receiver in the opposite end. This cylindrical body porro is ca. 49 mm diameter on the ends, it is smaller in diameter compared to the one from the 7TE-5 which is ca 58 mm diameter.

any leads appreciated! I plan to post the finished project in the appropriate forum.

geoff

[apfever]

Post a picture of what remains you have. Post a few pictures with referenced descriptions. My brain is shrinking. Scott Carey (Grant Williams) would be proud.

Edited by apfever, 31 May 2022 - 07:51 AM.

[ccwemyss]

I have one that is missing the prisms and the side that attaches to the scope. The eyepiece holder side is there, but is missing the setscrew. The bakelite body itself is in good condition. If that will work for you, PM me. 

 

Chip W. 

[strdst]

Geoffrey,

I have one as well. Identical to the one in my 7te kit.. It's complete all metal and in nice condition EXCEPT one of the three screws that attach the cover plate to the body is sheared off. If you have a teensy weensy easy out... or combine with Chip's parts?

keith

[Will A]

Hallo!

If anyone can help I am looking for aluminum rings for a 1980s Meade 826. I bought it with the damage.
Everything else but the pot metal screws on the view finder rings is in excellent condition (are those even replaceable?)
Nylon string is most definitely not a good substitute for aluminum.

 

Will A

[tony_spina]

Recently got a Towa 339 OTA that I purchased from Goodwill.  Unfortunately it looks like prior to packing and shipping they damaged the focuser.  The focus knob axel is bent and I'm going to try to straightened it out, however my bigger issue is the teeth on the focus tube rail of the rack and pinion is broken

 

It's missing about 1/2 inch where it attaches to the tube (see picture) also some of the teeth are broken so the focuser slips when racked in.

 

The scope is also missing the finderscope cross hair eyepiece.   Would be really appreciative if someone has these 2 parts

Attached Thumbnails

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Edited by tony_spina, 04 June 2022 - 08:31 PM.

[Jim Curry]

Give away:  Unitron 114 legs, you pay shipping.

 

Looking for:  I just gave a Unitron 114 to my son and daughter in law.  I noticed on lens retaining ring screw is missing - one of the three they apply paint to.  Anyone have a spare?

 

Kind regards,

Jim

[Kasmos]

I'm looking for a couple of parts to finish some projects.

 

First, I'm in need of a slow motion control for a Unitron 114 mount.

I've tried the want ads several times with no luck so I may as well try here.

 

I need the type in the middle with the very fine threads

 

If nobody has a spare slo-mo knob, then maybe someone has a spare insert collar that accepts the coarser thread knob

The coarse thread insert collar is a standard 6mm x1 size so a control could be made from a standard bolt.

 

Another long shot.

I'd like to find some of these insert studs for a Vixen Polaris.

They are used with what many call the crusher tube rings (which I have).

A lot of people don't like or use them so maybe someone has some spares.

I suppose they could be fabricated, but it's worth a try here first.

 

Drop me a PM if you have any of this stuff

 

 

 

 

 

 

 

 

[jragsdale]

First, I'm in need of a slow motion control for a Unitron 114 mount.

I too had a broken 114 slow motion knob, and I had a friend with a lathe who was able to extract the screw from the plastic knob and make a new one according to the specifications. Really all you would need is a proper diameter steel rod and a tap and die set to make an identical replacement.

[MGAR]

I'm looking for a couple of parts to finish some projects.

 

First, I'm in need of a slow motion control for a Unitron 114 mount.

I've tried the want ads several times with no luck so I may as well try here.

I too have a broken slow mo control for my SPI, similar mount to the Unitron's. Right now I'm using a $1 wing bolt from home depot as a workaround. I'm getting my larger jeweler lathe online to make a identical replacement, we'll see how that works out.

 

 

Cheers!

Gary

[Kasmos]

Really all you would need is a proper diameter steel rod and a tap and die set to make an identical replacement.

The controls with the coarse thread are standard 6mm with a pitch of 1. I can easily find those but can't find a bolt to fit the finer threads and I don't believe it's a standard size that can be found as a tap or die. That's why if I can't find a an intact control knob (on its threaded shaft), I would settle for a coarse threaded insert.

Edited by Kasmos, 17 June 2022 - 06:37 PM.

[Kasmos]

I too have a broken slow mo control for my SPI, similar mount to the Unitron's. Right now I'm using a $1 wing bolt from home depot as a workaround. I'm getting my larger jeweler lathe online to make a identical replacement, we'll see how that works out.

 

IMG_4623.jpg

 

Cheers!

Gary

Your mount is a old Towa and IIRC a standard1/4-20 bolt fits those threads. The ones on the Unitron are much finer and uncommon.

[MGAR]

Your mount is a old Towa and IIRC a standard1/4-20 bolt fits those threads. The ones on the Unitron are much finer and uncommon.

Actually it's a standard 10/32 thread.

[1939Dodge]

Looking for a peep sight and strap for an Edmunds Astroscan. Thank you!

[billmalona]

Hello, looking for dewshield cap for a celestron C60 refractor I'm using, a replacement celestron 5x24 viewfinder and .965" prism diagonal. Yes it's primitive, but I enjoy the hobby and that's what matters, right? Thanks, Bill

 

FOUND: diagonal!

Edited by billmalona, 26 June 2022 - 03:51 PM.

[mdowns]

Bill,I have a no name(chinese) .965 diagonal you can have.If you want it,send me a pm.        Michael

[jcruse64]

On the hunt for a dust cap for the Celestron/Vixen SP C-102 I just picked up. Please shout out if you come across one.

 

Thanks!