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Equipment Discussions >> ATM, Optics and DIY Forum

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BarabinoSr
Pooh-Bah
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Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722173 - 03/09/13 12:05 PM Attachment (55 downloads)

I started with some of the modifications to the pedestals. In this image, I decided to work on the Reflector unit.

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722413 - 03/09/13 02:08 PM Attachment (55 downloads)

Using the angle grinder three slits cut equidistant all around were made on the top of each pedestal. This so that the scope connecting piece( for lack of a better name) can seat and be bolted into place. Here is a view of that part.This is also made of 6061 aluminum . The three screws fit into the slots on the top. A small bolt will be added to the pedestal bracket to help with the altitude adjustment and stability.

Edited by BarabinoSr (03/09/13 02:12 PM)


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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722503 - 03/09/13 03:39 PM Attachment (59 downloads)

Joining the mount support to the pedestal was a snap! But for esier transfering of the mount from pedestal to pedestal was made even easier by slotting the top.

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722522 - 03/09/13 03:50 PM Attachment (54 downloads)

Thanks to the work with my new angle grinder, I was able to slot the pedestal top for the mount assembly thus.

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722725 - 03/09/13 05:53 PM Attachment (43 downloads)

Another view.

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722788 - 03/09/13 06:34 PM Attachment (69 downloads)

First view of the mount on the reflector pedestal. Note that it has the 48" long declination shaft.

Edited by BarabinoSr (03/09/13 07:02 PM)


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Mirzam
Post Laureate
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Reged: 04/01/08

Loc: Lovettsville, VA
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722813 - 03/09/13 06:52 PM

How do you brake the shafts? Looks like there is some sort of device on the dec plate. What are you using to connect the scope/saddle to the dec shaft?

Looking good!

JimC


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dawsonian2000
Carpal Tunnel
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Reged: 07/26/06

Loc: Riverview, FL, USA
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722852 - 03/09/13 07:18 PM

Hey Bam!

I look forward to seeing the updates you made to your EQ, which I am already aware of. I believe CN members will lover the changes. Especially the modifications to the braking system that work splendidly. I will let you elaborate further.

Mel


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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: Mirzam]
      #5722956 - 03/09/13 08:34 PM Attachment (70 downloads)

Well ,it will be easy to build a braking system for the Declination axis as well as the RA axis, and that all will soon be explained as this project goes on. How will the telescope cradle be joined to the declination axis ? . Look back at the third photo in the thread. You can see a small thick ring with a 1" diameter hole in the center. Here is a close up of that ring. It fits the declination shaft perfectly, and has an allen head screw on its side so that it can be tightened down. I can lock it on the shaft by way of this allen screw. Using my drill press equipped with a 1/3" diameter metal-cutting bit, I bored 3 holes equidistant all around in this ring and in the plate to match .

Edited by BarabinoSr (03/09/13 08:36 PM)


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BarabinoSr
Pooh-Bah
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Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5722982 - 03/09/13 08:57 PM Attachment (71 downloads)

The build was delayed until the arrival of THIS !!!! A gift from my freind and brother Mel Dawson Vega Sky Center II.

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chuck52
sage
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Reged: 12/03/09

Loc: Quartz Hill,California
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5723157 - 03/09/13 11:17 PM

Watching your progress on the mount is inspiring me to start my own pillow block type mount.Very nice!

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neo
Carpal Tunnel
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Reged: 02/12/08

Loc: Iasi, Romania
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: chuck52]
      #5723361 - 03/10/13 04:36 AM

Ah yes, it's comming along nicely .
You'll have to trim that DEC shaft, looks a bit to long, and with all the counter weights in place it will flex quite a bit. You'll probably not detect it visually but thru eyepiece could be noticeable.


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BarabinoSr
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Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: neo]
      #5723437 - 03/10/13 06:56 AM Attachment (71 downloads)

Yep that is the plan neo. As a matter of fact,I will replace that shaft entirely with a new precision 30" x 1" diameter one and two new pillow blocks later in the build.
Do you guys recognize this?


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BarabinoSr
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*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5723450 - 03/10/13 07:09 AM Attachment (61 downloads)

This is part of which was in the box from Mr Ed Byers- a 9-inch diameter clock drive system ,machined to fit a 1" diameter shaft. Next ,the worm and motor assembly.

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BarabinoSr
Pooh-Bah
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Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5723465 - 03/10/13 07:34 AM Attachment (69 downloads)

Busness side 9-inch Drive Gear. Note the six hexagonal spring loaded clutch adjustment allen screws. For this mount to work properly this clutch must provide slow motion in RA movement. The objective is to achieve what Mel Dawson and I like to term " Stop Right There" capability. This means that with all things considered, wherever you point the scope (doesnt matter which scope is up there) that the scope stays on what it is pointed toward. This drive is a marvel in precision mechanical construction and it is one of many of the great works of Mr. Byers.

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build new [Re: BarabinoSr]
      #5723471 - 03/10/13 07:41 AM Attachment (57 downloads)

This edgewise view shows the meticulous detail in the gear teeth, and the gear to worm match is perfect.

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Sean Cunneen
Let Me Think
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Reged: 08/01/07

Loc: Blue Island Illinois
Re: A 1" Shaft diameter Pillow Block Mount Build [Re: BarabinoSr]
      #5723543 - 03/10/13 09:17 AM Attachment (50 downloads)

Nice! Welcome to the club!

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build [Re: BarabinoSr]
      #5723564 - 03/10/13 09:40 AM Attachment (58 downloads)

Here is a view of the drive gear and teeth .The last image did not post. Hopefully this one will post this time .

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BarabinoSr
Pooh-Bah
*****

Reged: 11/17/05

Loc: Slidell La
Re: A 1" Shaft diameter Pillow Block Mount Build [Re: BarabinoSr]
      #5723570 - 03/10/13 09:44 AM

Hey Sean ! That is an awesome millow block mount. What size scope is riding on that ?!!!

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mikey cee
Postmaster
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Reged: 01/18/07

Loc: bellevue ne.
Re: A 1" Shaft diameter Pillow Block Mount Build [Re: BarabinoSr]
      #5723578 - 03/10/13 09:52 AM

It's almost sad that most don't see the simplicity, beauty, reliabilty and ease of construction in a pillow block mounting. I find that an industrial "look" is really not all that bad. After all ever see a professional observatory mount that looked like it was purchased out of a catalog? Mike

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