1:16 scale Universal Power Shovel.

[MinerFortyNiner]

Wow...my head hurts thinking about those rivets...

[Scratchman]

Adding rivet and nut-bolt detail is really quite therapeutic.

Here's the road wheels and return rollers for the continuous tracks. There are six pairs of road wheels on the bottom  and two pairs of return rollers on the top. Both are the same size. I used 030" styrene 5/8" diameter disk for the center. I added a thin slice of 5/8" diameter plastic tube to each side. After the three parts are glued together I drilled the four 1/16" holes in the centers.  The axles are 040" brass wire (I'm not going to use the styrene nut-bolt castings I have holding on the wheels on the top assembly in the photo). A small 00-90 washer will form the hub. I will add these after they are painted and the ends on the track frame are assembled.



Gordon Birrell

http://www.flickr.com/photos/77318580@N00/

       

[Scratchman]

Here's some measurements for the shovel for Gil and Marty. Some of the measurements have been rounded off to even things up.

Frame

(2) Side H Beam 6" w 8" h x 11'0" long
(2) End C Beam 3" w 8" h x 3'8" (Note on the prototype the measurement is 2 w 8 h x 3'7" long)
(2) Gusset frame corner top-rear 12" x 10"
(2) Gusset frame corner bottom rear 12" x 6"
(2) Track Outrigger Beans 6" w 6" h x 7'6" long. From the front of the front end beam to center of the outrigger beams (front beam) 1'4" (rear beam) 6'6"
(4) Gusset outrigger-frame 1'6" w x 1'8" long
(4) Angle Gusset on outside side-end beams 3" x 3" x 6" long
(1) Angle for Motor mount 3" x 3" x 3'8" long
(1) Center Brace 4'3" from front of front end beam to the back of the assembly. (2) Angle 3" x 3" x 3'8' long with (1) Gusset 13" x 22"
For the X braces on the bottom use 3" or 4" flat bar
For straps over the outriggers use 3" flat bar
I added two small brackets out of 5/32" angel 6" long

Diagonal Frame with leg

(2) Butterfly Brace 4" x 12"  (frame) to main beam
(2) Main Beam 4" w 5" h x 9'5" long
(1) Gusset  2'8" 5'1" main beam to main beam
(2) Gusset 1'4" x 1'4" main beam to leg
(2) Leg 4" w 5" h x 4'1" long
(1) Top Brace 6" flat bar.
for the X brace use 2" flat bar.
Angle connectors 4" x 8" on the front side 8" long, on the back side 5" long  for the (frame) to leg

Turret 4'0" diameter x 5" h

Turret A Frame

(2) main C 3" x 7" 4'10" (space apart  out-side to out-side. 2'4" at the bottom and 1'4" at the top)
For the X braces use 2" flat bar.

Main Boom

(2) Sides C Beam 3" w 8" h x 15'2" between pulleys.
(1) Gusset top 12" w 6'0" long.
(1) Gusset bottom 12" w 4'0" long.
Pivot point for roller-pulley assembly 8'6" from bottom pulley.

Bucket Arm

(2) side C Beam 2" w 5" h x 11'0" total width is 6".

Bucket at front is around  2'1" w x 2'3" h and 2'3" deep.

Gordon Birrell

http://www.flickr.com/photos/77318580@N00/









 

[Ray Dunakin]

Thanks for posting those dimensions. I've saved them in case I decide to try building one myself someday.

[lab-dad]

Thanks Gordon!
At this point I don't want to know if I screwed up!......
-Marty

[Scratchman]

The links for the tracks are made out of styrene. The hinges are made out of two links of Tamiya ladder-chain and sprocket set (#840 item 70142). If I would have made the links 1/32" shorter the chain could have been hooked continuously.



Gordon Birrell

http://www.flickr.com/photos/77318580@N00/

[NORCALLOGGER]

Gordon,
Very, very creative use of materials on those tracks.

If I would have made the links 1/32" shorter the chain could have been hooked continuously.

Isn't hindsight wonderful???

Beautiful job on creating this project from pictures, thanks for sharing it.
Rick

[Ray Dunakin]

Always a pleasure to see updates on this project!

[finescalerr]

So, Gordon, have you been doing any modeling lately? -- ssuR

[Scratchman]

To get the slack out of the tracks I will shorten one of the links on the bottom where it's not too noticeable. You can't win them all.





Gordon Birrell

http://www.flickr.com/photos/77318580@N00/

[lab-dad]

Bitchin'!!
Really cool to see a project we are both working on from different views.
Would be amazing to get them together........... ..........
The tracks look fantastic!

Are you really considering white for the final color?

-Marty

[Ken Hamilton]

You know that part of the movie where you suddenly realize the mild-mannered
main character is totally insane?  That's where this thread is right now.

Gordon, the wheels and tracks on this thing are the most astounding pieces of scratchbuilding ever.
Congraulations.  I can't wait to see what's next.

[Mr Potato Head]

Of course you would come up with a way to solve the track problem!  Very cool, you have made it a lot easier for me! 
Thanks
Great job!
Gil

[Scratchman]

Thanks Guys for your comments. Marty I was thinking of painting the shovel Mary Kay Pink but I can't find it in a rattle can. So I will be going with the white with maybe some red parts. I had all of the drive wheels painted red and was ready to paint the track frames red but it was too much for me and I repainted them white. This model will be part of my Red X Mining Company, and may be part of my monorail diorama.

Gordon Birrell

http://www.flickr.com/photos/77318580@N00/

[Geoff Ringle]

That will be one hell of a diorama.... can't wait to see that.