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turk123
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Reged: 07/09/10

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Introduction and my project
      #5620819 - 01/13/13 01:44 PM

Hi everyone.

Iím not new to cloudy nights on the classified side, but Iíve posted very little here in the forums. I wanted to introduce myself as I have just made a purchase of a classic scope and wanted, quite frankly, a little help with it. I believe most here are over qualified!

The telescope in question comes from Paul in New York. He has taken quite good care of it and it is in very nice condition. I want to restore it to new or better than new condition.

I have been in contact with Jon Miles (PiSigma) and have read his incredible restoration project of his Super chrome deluxe. I followed (avemanís threads also and scoured his website for info. Iíve also read almost everything here in the forum on the subject. It has truly inspired me to complete a restoration fitting for this historical scope. . I can say I am a bit handy with tools and Iím usually not squeamish about taking things apart. That said, I realize there are no second chances with some of the parts. I need help on proper ways to do certain things. I have to say I admire the depth of knowledge when someone here explained the proper way to separate the glass in a finder objective, ďTo separate the main refractor glass objective, boil in a solution of sulfuric acidĒ How do you guys know this stuff??

Of course I know the answer, experience and knowledge. OK, Iím not trying to stroke everyoneís egos, just recognizing a knowledgeable source of information that Classic Telescopes brings to the Internet. I believe Iím in good hands.

And now for the scope in question: Cave Astrola 10Ē F6 Super chrome deluxe.

I was hesitant in posting this, as I am not in possession of the scope yet. It still resides in New York with Paul. Iíve made arraignments to pick it up when I visit NEAF in April (if I can wait that long!). I have some questions and I need to aquire a few parts to complete the project and I figured I could get started, as parts may not be readily available.

Well, thatís about it to start. I would like to thank you all in advance for any support you can give me. I will be posting here and to a Google+ page with updates. I will have lots of pictures and videos on the Google+ page ; everything from picking up the scope up and talking with the previous owner Paul, to polishing on the bench, and of course, implementing your suggestions.

Iím 60 years young, my wife and I live in Canfield Oh (NE Ohio) and I am involved in astrophotography. This would be my second restoration.

PS: Iíve got pictures!

Turk
Tom Terleski


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dgreyson
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Reged: 11/06/12

Loc: South Carolina
Re: Introduction and my project new [Re: turk123]
      #5620931 - 01/13/13 02:32 PM

Hi Turk! I've got a 12.5 cave that I am in the process of restoring too. Hopefully, we wont need any boiling Sulfuric acid, but a lot of elbow work is definitely going to be in order.

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Grava T
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Re: Introduction and my project new [Re: dgreyson]
      #5620985 - 01/13/13 02:53 PM

Hello Turk! There are many members here with experienced restoration techniques but I am not one of them. Problem is that I don't have a workshop/garage nor the space to build one and my wife would string me up if I started sanding metal or painting in the apartment.

I will be following your post though and look forward to seeing some photos along the way. Good luck and happy restoring.


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turk123
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Re: Introduction and my project new [Re: Grava T]
      #5621002 - 01/13/13 02:59 PM

+dgreyson
I hope acid is not in my future. I do have a great bench grinder with assorted pads and a nice dremmel that should get a workout.

+Gravat
My son's wife has a table saw in their living room! They have an apartment also. Doesn't stop them!

I will get some photos up here.

Turk


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5621013 - 01/13/13 03:03 PM Attachment (29 downloads)

Here is the "before" picture. Not bad at a distance, but can need some help in some areas.

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sgorton99
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Re: Introduction and my project new [Re: turk123]
      #5621023 - 01/13/13 03:06 PM

I think it looks pretty nice now! How fun with your project.
Steve


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turk123
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Re: Introduction and my project new [Re: sgorton99]
      #5621054 - 01/13/13 03:23 PM Attachment (18 downloads)

Quote:

I think it looks pretty nice now! How fun with your project.
Steve




It wasn't a "hidden in a barn" find, and I paid a bit more for it. It does have it's flaws.

Here is another pict of the mount. There is no DEC motor, something I would like to add to this. It also has no controller.


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5621057 - 01/13/13 03:25 PM Attachment (12 downloads)

The chrome is a bit shabby in areas also

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starman876
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Re: Introduction and my project new [Re: turk123]
      #5621083 - 01/13/13 03:42 PM

wish i had a shabby looking cave like that

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turk123
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Re: Introduction and my project new [Re: starman876]
      #5621096 - 01/13/13 03:50 PM Attachment (13 downloads)

Quote:

wish i had a shabby looking cave like that




Sorry Just trying to be a bit humble. I do appreciate it's condition.

Here is the mirror:


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5621102 - 01/13/13 03:52 PM Attachment (14 downloads)

and another of the mirror.

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chuck52
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Re: Introduction and my project new [Re: turk123]
      #5621111 - 01/13/13 03:56 PM

Hi Turk!
Congrats on the scope purchase.I too am in the process of a Cave restoration, a 10 inch F7. This is my first attempt at a scope restoration and like you I have read many of the fine threads on Cave refurbishment in this forum.I will be anxious to see your progress! I dont think I could wait till April though!


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turk123
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Re: Introduction and my project new [Re: chuck52]
      #5621148 - 01/13/13 04:21 PM

Hi chuck

I'm worried I won't make it to April either. I have lots of other work to finish before I begin this project. But I hear it calling and my wife will always take a long weekend to go to NYC.


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Grava T
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Re: Introduction and my project new [Re: turk123]
      #5621161 - 01/13/13 04:26 PM

Looks nice. You're gonna have a lot of fun with it. I had a 6" f/8 Cave Student Standard once and the views were amazing.

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dgreyson
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Reged: 11/06/12

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Re: Introduction and my project new [Re: turk123]
      #5621206 - 01/13/13 04:48 PM Attachment (10 downloads)

Quote:

Here is another pict of the mount. There is no DEC motor, something I would like to add to this. It also has no controller.




You have the Declination clutch and mounting plate. The motor it uses is scarce and expensive $200+ as it's a reversable gearmotor but they can be found. The real problem is getting the coupling gear that mates the motor shaft to the worm. it's fixed on the motor shaft and if you do not have the old motor you will need to fit a flexible coupler or something to the worm shaft to drive it.. Hopefully, if you do not have the motor gear, maybe one of the other readers has a spare one.

Stalled synchronus motors can be rejuvinated if you have one and it seems dead as long as the gear train is intact.

The controller is a small rectangular utility box that fits in your hand comfortable, it has two SPST N.O. pushbuttons and a motor capacitor and has a three wire cable that goes to the main clock drive and should plug into a socket there. Mine has a round DIN plug and socket. So the only bottle necks are having a motor and it's coupling gear. The rest are off the shelf items you can get fron Newark or Digi-Key.


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dgreyson
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Re: Introduction and my project new [Re: dgreyson]
      #5621222 - 01/13/13 04:55 PM Attachment (11 downloads)

Here is a photo of the control box and the dec motor. Notice the coupling gear on the end of the motor shaft. Since you have a slow motion knob on the dec gear, you likely are missing both sides of the coupler. Flexible couplers are readily available from various industrial supplies.

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turk123
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Loc: N.E. Ohio
Re: Introduction and my project new [Re: dgreyson]
      #5621346 - 01/13/13 06:01 PM

Quote:

Quote:

Here is another pict of the mount. There is no DEC motor, something I would like to add to this. It also has no controller.




You have the Declination clutch and mounting plate.




Are you saying all I am missing is the motor and of course the connector? I need to find an Astrola gravesite. If anyone has a motor I would certainly be happy to buy it off you.

Im not so worried about finding the control box as it can be made pretty close to original. Looked like a simple aluminum box. Has anyone drawn a schematic of the wiring? That would be useful.

Turk


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PiSigma
Carpal Tunnel
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Reged: 10/14/09

Loc: North Carolina
Re: Introduction and my project new [Re: turk123]
      #5621419 - 01/13/13 06:42 PM

There is a great schematic on the Cavetelescopes Yahoo group in the files section. Not sure if this link works if you are not a member:

Cave wiring schematic with Dec drive


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turk123
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Re: Introduction and my project new [Re: PiSigma]
      #5621454 - 01/13/13 07:02 PM

Got it. That's great Jon. Guess I wish I was dealing with 12v DC, but I'm sure I can get through it. If I'm not mistaken, didn't your cave have an aluminum box with two red buttons? Different than the one posted here earlier.

Turk


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PiSigma
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Re: Introduction and my project new [Re: turk123]
      #5621470 - 01/13/13 07:11 PM Attachment (9 downloads)

Yes. Here's mine. I have a letter from the original owner to Cave complaining about it being damaged in shipping. He never fixed it. Left is original paint and still bent, right is after restoration. Painted Rustoleum hammered silver. But I think later ones were black.

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dgreyson
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Re: Introduction and my project new [Re: turk123]
      #5621570 - 01/13/13 08:18 PM Attachment (18 downloads)

Quote:

Are you saying all I am missing is the motor and of course the connector? I need to find an Astrola gravesite. If anyone has a motor I would certainly be happy to buy it off you.




There is a round cylindrical shield that keeps children and small dogs from jamming the worm gear, The motor, which just bolts on w four bolts, the motor to worm coupling, a 3 conductor wire that goes from the motor - is clipped to the RA shaft casing w semicircular clips and enters a hole in the back case of the clock drive on the side opposite of your photos. If the wire holder clips are gone those can still be had or easily made. Look on the side of the polar axis casing, you should see two clips or small two holes where they were. Perhaps plugged up. I suppose someone who had it before you couldnt get a replacement motor and just stripped it all off. Or maybe they ony used it visually and liked climbing up and down a step stool to go turn the slow mo knob. You may also be missing the motor mount, it has four bolt holes and is screwed onto the semicircular base plate. A photo of the business end of the worm with the knob removed would tell the tale.

Mind you, there seems to be great variations in design with Caves, All I know really is from working on my own Cave and what I remember seeing back in the day. Some of the more serious minded collectors can illustrate and discourse on what's needed far better than I surely.


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Datapanic
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Reged: 10/17/09

Loc: Tucson, Arizona
Re: Introduction and my project new [Re: PiSigma]
      #5621582 - 01/13/13 08:23 PM

Hopefully you aren't missing the motor mount bracket - that is probably a part that would be very hard to find but a copy could be made.

Cave used at least a couple different kinds of Motors - mainly Hurst for the early models and Bristol for the later years. I think Hurst Motors were also used for the larger models in the later years. The reversible Hurst motors required a single capacitor while the Bristol motors used a capacitor and resistor. The diagrams can be found online.

I think most of the Dec motors (either brand) were 1RPM, however a 2RPM or 1/2RPM makes a good substitute. I actually prefer the 2RPM because its slew speed, at least with the Tangent Arm Dec Controls seem to more closely match the speed of the Clock Drive running with a variable frequency control providing 40/60/80Hz. But, I have a different setup with a home-made dual axis frequency control box and one hand control so I can easily move in both axises if needed.

Overall, your scope looks to be in pretty good shape with only a minor amount of rust to deal with and it seems to have all the parts, except for the Dec Shaft Lock Knob, which really isn't needed if you have a slo-mo Dec Control. Maybe it was added on at some point. The Latitude Adjuster is definitely an addon, but a very functional thing to have.


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turk123
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Re: Introduction and my project new [Re: dgreyson]
      #5621587 - 01/13/13 08:25 PM

Quote:

Quote:

Are you saying all I am missing is the motor and of course the connector? I need to find an Astrola gravesite. If anyone has a motor I would certainly be happy to buy it off you.




There is a round cylindrical shield that keeps children and small dogs from jamming the worm gear, The motor, which just bolts on w four bolts, the motor to worm coupling, a 3 conductor wire that goes from the motor - is clipped to the RA shaft casing w semicircular clips and enters a hole in the back case of the clock drive on the side opposite of your photos. If the wire holder clips are gone those can still be had or easily made. Look on the side of the polar axis casing, you should see two clips or small two holes where they were. Perhaps plugged up. I suppose someone who had it before you couldnt get a replacement motor and just stripped it all off. Or maybe they ony used it visually and liked climbing up and down a step stool to go turn the slow mo knob.




Unfortunately I do not have possession of the scope yet. It is in NY until April. I will revisit this once I get it and am able to examine it. I know one thing, I don't like climbing up and down a step stool to move the DEC axis!


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5621604 - 01/13/13 08:31 PM

I knew I should have waited to start this thread. Now I know I'm going to have to get it before April.

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turk123
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Re: Introduction and my project new [Re: Datapanic]
      #5621624 - 01/13/13 08:38 PM

Quote:


I think most of the Dec motors (either brand) were 1RPM, however a 2RPM or 1/2RPM makes a good substitute. I actually prefer the 2RPM because its slew speed, at least with the Tangent Arm Dec Controls seem to more closely match the speed of the Clock Drive running with a variable frequency control providing 40/60/80Hz. But, I have a different setup with a home-made dual axis frequency control box and one hand control so I can easily move in both axises if needed.




So what your saying is that there is a replacement motor that I could purchase as a replacement for the original? Do you have a link or part number for them?

That was my only fear in purchasing this one. The DEC motor was missing and possibly the mount for it. In leu of finding a cave motor, a new motor would work for me. I want to keep it as close to original as possible, but I will give that up for functionality. It is important for me to also use this as intended.

Turk

Edited by turk123 (01/13/13 08:43 PM)


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dgreyson
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Re: Introduction and my project new [Re: turk123]
      #5621638 - 01/13/13 08:44 PM

PM sent.

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turk123
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Re: Introduction and my project new [Re: dgreyson]
      #5621662 - 01/13/13 08:55 PM

Datapanic

That link is for a 1/3 RPM motor. Did you mean the 1 RPM or possible the 2 rpm. Looks like they have a variety of speeds. Looks like a good source.

I will contact them tomorrow to check availability.

Edited by turk123 (01/13/13 08:57 PM)


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Datapanic
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Re: Introduction and my project new [Re: turk123]
      #5621668 - 01/13/13 08:58 PM

Quote:

Quote:


I think most of the Dec motors (either brand) were 1RPM, however a 2RPM or 1/2RPM makes a good substitute. I actually prefer the 2RPM because its slew speed, at least with the Tangent Arm Dec Controls seem to more closely match the speed of the Clock Drive running with a variable frequency control providing 40/60/80Hz. But, I have a different setup with a home-made dual axis frequency control box and one hand control so I can easily move in both axises if needed.




So what your saying is that there is a replacement motor that I could purchase as a replacement for the original? Do you have a link or part number for them?

That was my only fear in purchasing this one. The DEC motor was missing and possibly the mount for it. In leu of finding a cave motor, a new motor would work for me. I want to keep it as close to original as possible, but I will give that up for functionality. It is important for me to also use this as intended.

Turk




I don't know what kind of motor was provided with the worm-driven Dec control. Hopefully someone will chime in about that.

Regardless of the motor brand, they are out there, just have to hunt one down. I found the Hurst motor I needed on a surplus site here: http://www.aptecelectronics.com/prod03.htm Until you know what motor is needed and the part number, it's going to be difficult to track one down


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Datapanic
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Re: Introduction and my project new [Re: Datapanic]
      #5621684 - 01/13/13 09:05 PM

CN Thread about locating replacement motors for Cave scopes

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PiSigma
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Re: Introduction and my project new [Re: Datapanic]
      #5621726 - 01/13/13 09:30 PM Attachment (16 downloads)

The motor is a Hurst Model CA series. The Hurst website shows that series as discontinued but maybe surplus is out there. I'm not sure of the speed.

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PiSigma
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Re: Introduction and my project new [Re: PiSigma]
      #5621730 - 01/13/13 09:31 PM Attachment (14 downloads)

It looks like you have the clutch assembly and original motor mounting plate (sandwiched between the OTA cradle and support bearing). We can't see it in the picture but hopefully that manual flex cable is attached to the original worm gear and mounting block. It is hard to tell how the previous owner attached the flex cable. But the end cap, round cover sleeve, round motor mount and triangular motor adpater might all be missing. A machinist might be able to make these.

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PiSigma
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Re: Introduction and my project new [Re: PiSigma]
      #5621738 - 01/13/13 09:33 PM Attachment (16 downloads)

My motor is connected to the worm by two toothed drive gears and joined by an internal toothed rubber sleeve. These might also be missing.

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PiSigma
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Re: Introduction and my project new [Re: PiSigma]
      #5621740 - 01/13/13 09:34 PM Attachment (14 downloads)

The rubber sleeve.

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turk123
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Loc: N.E. Ohio
Re: Introduction and my project new [Re: PiSigma]
      #5621770 - 01/13/13 09:48 PM Attachment (17 downloads)

Here is a new picture;

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PiSigma
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Re: Introduction and my project new [Re: turk123]
      #5621789 - 01/13/13 10:01 PM

Quote:

Here is a new picture;




OK, so the cable is attached to the same side of the worm where the motor would be coupled to, almost certainly with the original worm and block.


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turk123
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Re: Introduction and my project new [Re: PiSigma]
      #5621793 - 01/13/13 10:06 PM

Quote:

Quote:

Here is a new picture;




OK, so the cable is attached to the same side of the worm where the motor would be coupled to, almost certainly with the original worm and block.




I hope that is good?? I just sent an email to Paul in NY to see if he would contact the original owner for the rest of the parts. I haven't heard back yet. I doubt he would have them.

What else can I do? Manufacture the rest? That certainly is an option.


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Datapanic
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Re: Introduction and my project new [Re: turk123]
      #5621818 - 01/13/13 10:19 PM

Hopefully the original parts will be located!

April's too far from now - road trip!


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dgreyson
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Re: Introduction and my project new [Re: Datapanic]
      #5621915 - 01/13/13 11:24 PM


You are missing the motor mount. So Bad. But not fatal.

Local machine shops can easily make the motor mount for you, Crawford Machining specializes in custom telescope parts.
http://crawmach.com/custom_work

The best bet, is to find the original parts if they arent lost. worst case, A stepping motor could be used instead of the original. That would be somewhat cheaper but requires technical expertise in electronics or the use of programmable logic controller chips. It's always preferable to keep a collectable object as original as possible, but Telescopes are meant to be used, So using substitutes to get it in proper working order is not the end of the world.

On the other hand, if you have a gracious wife or a girlfriend with moderately low standards, I'm confident they would surely jump at the chance to crank the thing around for you while you stand on your stepladder looking into it. Tell them William Hershells wife Mary and his sister Caroline also, were both glad to help out when he needed them. How could ones gentler half refuse if you were to put the question to them in a polite and gracious manner?


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turk123
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Re: Introduction and my project new [Re: dgreyson]
      #5621945 - 01/13/13 11:54 PM Attachment (15 downloads)

Thanks Dgreyson

I did find the flexible gear couplings. Here is the link:

https://sdp-si.com/eStore/Direct.asp?GroupID=1014


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Datapanic
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Re: Introduction and my project new [Re: turk123]
      #5621983 - 01/14/13 12:29 AM

Stock Drive Products is first rate! I've found a lot of parts there for various restores many times.

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turk123
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Re: Introduction and my project new [Re: Datapanic]
      #5622224 - 01/14/13 07:52 AM Attachment (15 downloads)

One more picture:

The optics were re coated in 2008.

Edited by turk123 (01/14/13 08:00 AM)


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5622255 - 01/14/13 08:34 AM Attachment (12 downloads)

One more of the mirror. The business end.

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RogerRZ
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Re: Introduction and my project new [Re: turk123]
      #5623086 - 01/14/13 05:11 PM

Hi, I just wanted to pop in, and present myself as the owner before Paul. I regret to say I passed it on to Paul in the same condition and with the same parts I received it in. No spare parts...

Someone might be able to verify that these mounts are all like that, but this particular example looked a lot sturdier than it actually was. I have to say that the rotating rings and the slip clutches made it quite fun to use just the same...

Good luck to you!


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turk123
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Re: Introduction and my project new [Re: RogerRZ]
      #5623166 - 01/14/13 06:05 PM

Hi Roger

I found Roger through Paul and ask him to chime in here not knowing he would be dissing my mount! I'm at a disadvantage as the mount is not with me yet, but this "looseness" in the mount has me puzzled. What could cause that or are the mounts a bit loose to start with?

Thanks for coming Roger!

Turk


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Datapanic
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Re: Introduction and my project new [Re: turk123]
      #5623427 - 01/14/13 09:05 PM

Adding a latitude adjuster to the Cave mount will help make it much sturdier. Otherwise, the entire weight of the OTA and Equatorial head pass through a single point - that bolt on the pier cap that connects to the RA Shaft Housing. Through my own testing with the 8" Lightweight Deluxe I have which also has a latitude adjuster, when that bolt is tight, it takes quite a few seconds (>5) for vibration to dampen out when the tube is touched. But, when that bolt is loose and the weight of the OTA and head are divided between the bolt and a latitude adjuster, dampening takes less that a second! The tighter that bolt is, the worse the dampening time gets.

The other cause of wobbliness are the caster wheels - but that can be alleviated by removing them or using leveling bolts, if equipped.

Not sure if that's the looseness you're talking about, but thought I would mention this anyway for the Shop Talk on Caves


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turk123
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Re: Introduction and my project new [Re: Datapanic]
      #5623451 - 01/14/13 09:24 PM

Thanks Datapanic

Both past owners have mentioned the looseness in the mount. Again, I have no way to look at or test your ideas, but I am filing all this away to address later. I need to go get this thing . . .

The trouble with going to NYC with my wife will be that SHE gets to shop and spend as much as I did on the scope. The cost of this hobby never is fully measured unless you include that extra cost.

Edited by turk123 (01/14/13 09:25 PM)


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Datapanic
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Re: Introduction and my project new [Re: turk123]
      #5623472 - 01/14/13 09:36 PM

I hear ya - my gets a Victorian era dress with accessories for every scope I get, so I choose carefully!

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turk123
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Re: Introduction and my project new [Re: turk123]
      #5625094 - 01/15/13 08:03 PM Attachment (11 downloads)

Well, I have a source for the motor (abet new), I also have the 2 gear flexable coupler, and I just talked to a friend of mine who has a lathe, We can make the two parts I needed. Those are the two parts mounted to the motor in the picture below..

When the time comes, is there anyone out their with a micrometer that could measure the two parts? Possible trace and scan them also? That would make it so much easier than trial & error (and mostly error)! It just has to be close as we can make them line up to fit the worm drive when it gets mounted to the worm plate.


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PiSigma
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Re: Introduction and my project new [Re: turk123]
      #5625358 - 01/15/13 10:37 PM Attachment (10 downloads)

Tom,

I can do that, just need to remember to bring my mic home from work. I'll try and take mine apart and do some drawings this weekend. Here's another shot from when I restored mine. As you've probably noticed the round cover and end cap aren't needed to make it work. They just cover up the mechanism.


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turk123
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Re: Introduction and my project new [Re: PiSigma]
      #5625407 - 01/15/13 11:02 PM

Thanks Jon

I see that those are not necessary, but then, it wouldn't be a cave.

I appreciate your help.

Could you also measure the flexible gear coupler? I need to know what size to buy. Gear size and assembly length.

Thanks so much! I was hoping you would chime in. After all, you are an engineer!


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turk123
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Re: Introduction and my project new [Re: turk123]
      #5629032 - 01/17/13 10:38 PM

Well, after reading the restoration project on the 12.5 found in a field, I am in the presence of greatness! I appreciate all the help you can give me Dan. I am amazed at the different techniques you use to do a restoration. I definitely will use some of that knowledge to get my project going. Thank you for the incredible knowledge you've given this community.

That said, do you have a dec motor? Pleeeese?

Turk


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PiSigma
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Re: Introduction and my project new [Re: turk123]
      #5633622 - 01/20/13 05:33 PM Attachment (5 downloads)

Tom,

Attached are my sketches of the two parts you need to make for your dec drive. Iím no CAD jockey so hopefully these hand drawings have all the detail you need. I didnít dimension the outside of the triangular adapter. This was pretty much cut free hand by Cave to more or less match the base of the motor. The holes on this are symmetrical about the centerline. On the round hub the two lower mounting holes, which are asymmetrical about the center line, need to match those on the side of your existing mounting plate. Check to make sure the hole spacing on these matches yours.

The screws holding the motor to the triangular plate are 6-32 x ľĒ button heads. The screws mounting the triangular plate to the round hub are 6-32 x 7/8Ē cheese head screws although socket heads would work fine. The screws to mount the hub to the plate are 10-32 x ĺĒ socket heads.


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PiSigma
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Re: Introduction and my project new [Re: PiSigma]
      #5633625 - 01/20/13 05:34 PM Attachment (4 downloads)

The hub.

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PiSigma
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Re: Introduction and my project new [Re: PiSigma]
      #5633638 - 01/20/13 05:38 PM Attachment (5 downloads)

The two drive parts are 0.677" major outside diameter and 0.510" overall length. They are marked Guardian, Mich. City, Ind. on the back and have 8 teeth. The one on the worm drive shaft has a 0.250" center hole while the one on the drive motor is 0.186". The rubber coupler is 0.566" long.

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turk123
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Re: Introduction and my project new [Re: PiSigma]
      #5633785 - 01/20/13 07:02 PM

That's fantastic Jon. I really appreciate you taking the time on this. I talked to my friend Dave (he has the lathe) about this and he said no problem at all to manufacture the parts. He even has the aluminum stock on hand.

I have to wait untill the scope gets home before I start making these. I want to make sure Mr. Cave stuck to his design, something we all know he didn't do!

I can order the two gear flexible drive. If you notice on the pictures I posted of the gears, they are also Guardian. An exact match and still made today.

Jon, thanks again so much for the support. I hope mine turns out as nice as yours.


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