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Mirror Model's D7 Bulldozer in 1/35th
Removed by original poster on 08/23/15 - 23:08:38 (GMT).
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Sunday, August 23, 2015 - 04:27 AM UTC
Small details but check out the D7 in this photo that Frenchy posted. It has completely lost its' fairlead assembly (that bunch of pulleys above the twin drum winch) It is unusual that the dozer blade cable is being fed directly off the righthand winch drum.
Note: The rear A frame of the overhead cableway is asymmetrical, the top of which is off center to the right. This must have been a standard variation as the Doyle book contains a similar modern day restored vehicle and the caption says the A frame is off center to better align the blade cable with the right side drum winch.
Note: The rear A frame of the overhead cableway is asymmetrical, the top of which is off center to the right. This must have been a standard variation as the Doyle book contains a similar modern day restored vehicle and the caption says the A frame is off center to better align the blade cable with the right side drum winch.
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Sunday, August 23, 2015 - 11:50 AM UTC
I wish someone could explain the unusual overhead cableway on this vehicle! Again the Doyle book contains a beautifully sharp rendition of this photo.
The rear A frame riser is symmetrical. It is made out of round tubing rather than square AND it slants/angles to the rear at about a 25 degree angle. Then the overhead horizontal beam that carries the cable looks like it has been extended at the rear to allow for this new angled A frame. Finally there is an additional horizontal pulley sheave structure at the front end of the overhead horizontal beam that does not seem to serve any purpose when the bulldozer blade is attached.
Field mod? Repaired combat damage? One of a kind? - - I thought at first it might be an unusual variant that had the big single drum Hyster winch installed at the rear to power the blade. (Now that would have been something I would have had to build! But no, I can see the control levers for the standard LaTourneau double drum winch coming up over the top rear of the makeshift armored enclosure so no dice on that idea. I'm stumped???
The rear A frame riser is symmetrical. It is made out of round tubing rather than square AND it slants/angles to the rear at about a 25 degree angle. Then the overhead horizontal beam that carries the cable looks like it has been extended at the rear to allow for this new angled A frame. Finally there is an additional horizontal pulley sheave structure at the front end of the overhead horizontal beam that does not seem to serve any purpose when the bulldozer blade is attached.
Field mod? Repaired combat damage? One of a kind? - - I thought at first it might be an unusual variant that had the big single drum Hyster winch installed at the rear to power the blade. (Now that would have been something I would have had to build! But no, I can see the control levers for the standard LaTourneau double drum winch coming up over the top rear of the makeshift armored enclosure so no dice on that idea. I'm stumped???
M4A1Sherman
Joined: May 02, 2013
KitMaker: 4,403 posts
Armorama: 4,078 posts
Posted: Sunday, August 23, 2015 - 07:11 PM UTC
Quoted Text
I wish someone could explain the unusual overhead cableway on this vehicle! Again the Doyle book contains a beautifully sharp rendition of this photo.
The rear A frame riser is symmetrical. It is made out of round tubing rather than square AND it slants/angles to the rear at about a 25 degree angle. Then the overhead horizontal beam that carries the cable looks like it has been extended at the rear to allow for this new angled A frame. Finally there is an additional horizontal pulley sheve structure at the front end of the overhead horizontal beam that does not seem to serve any purpose when the bulldozer blade is attached.
Field mod? Repaired combat damage? One of a kind? - - I thought at first it might be an unusual variant that had the big single drum Hyster winch installed at the rear to power the blade. (Now that would have been something I would have had to build! But no, I can see the control levers for the standard LaTourneau double drum winch coming up over the top rear of the makeshift armored enclosure so no dice on that idea. I'm stumped???
Hmmm... I'm inclined to think that this is a Field-Mod. US Engineers and for that matter, many other branches of our troops have always been resourceful in coming up with solutions on their feet when faced with problems or opportunities to improve things of their own volition. Lest we forget, we are a nation of mechanics...
The "Super Pershing" was the result of a "field-mod" done by 3rd Armored Ordnance/Engineers- Belton Cooper explains how this was done in his book "Death Traps"...
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Sunday, August 23, 2015 - 08:05 PM UTC
Apparently this is a standard production model Caterpillar. Found this photo online. Looks like this Cat is equipped with the massive Caterpillar built rear mounted twin drum winches. I guess the changes to the overhead structure were to accommodate this large winch.
Frenchy
Joined: December 02, 2002
KitMaker: 12,719 posts
Armorama: 12,507 posts
Posted: Monday, August 24, 2015 - 12:38 AM UTC
You can see two types of frames in this 1944 footage :
https://www.youtube.com/watch?v=Hr2ptzwudGs
H.P.
https://www.youtube.com/watch?v=Hr2ptzwudGs
H.P.
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, August 24, 2015 - 12:53 AM UTC
Hopefully with some on-going research I can learn more about these differences in the overhead rigging.
Thanks Frenchy!
Thanks Frenchy!
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, August 24, 2015 - 05:24 AM UTC
A COUPLE MORE DETAILS "DOWN THE DRAIN":
There should be two holes in the forward skid plate under the engine. One small hole for the radiator overflow drain hose and a larger one to access the engine oil pan drain plug. And of course there actually needs to be an engine oil pan drain plug.
p.s. I also need to add a transmission drain plug.
Here with a little oil and dirt weathering added . . . . . . . . And on the right a shot of the new transmission drain plug as well.
There should be two holes in the forward skid plate under the engine. One small hole for the radiator overflow drain hose and a larger one to access the engine oil pan drain plug. And of course there actually needs to be an engine oil pan drain plug.
p.s. I also need to add a transmission drain plug.
Here with a little oil and dirt weathering added . . . . . . . . And on the right a shot of the new transmission drain plug as well.
DocEvan
Joined: August 09, 2014
KitMaker: 180 posts
Armorama: 180 posts
Posted: Monday, August 24, 2015 - 07:39 AM UTC
Mike,
MicroMark has raised rivet decals which would be a lot easier to use for this purpose!
MicroMark has raised rivet decals which would be a lot easier to use for this purpose!
Quoted Text
Finally I installed this "strip of tack heads" next to the welting across the top of the seat back. (In the left hand photograph the white "tacks" on the white plastic did not show up in the photo so in this case I retouched in the tacks.)
On the right hand photo you can see that I have now done the same thing adding the tack strip around the welting at the front bottom edge of the seat cushion as well.
____________________________________________________________________________________________________
____________________________________________________________________________________________________
A small side bar here: I wanted to reduce the future complexity of installing the floorboard so I cut the heel board off the plastic floor piece and attached it to permanently to the front edge of the seat. One less thing to hassle with!
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, August 24, 2015 - 08:18 AM UTC
Another added detail - the large spinners (wing nut) retainers on top of the oil filters. Do not know whether I will paint them OD or red:
M4A1Sherman
Joined: May 02, 2013
KitMaker: 4,403 posts
Armorama: 4,078 posts
Posted: Monday, August 24, 2015 - 04:15 PM UTC
Quoted Text
Apparently this is a standard production model Caterpillar. Found this photo online. Looks like this Cat is equipped with the massive Caterpillar built rear mounted twin drum winches. I guess the changes to the overhead structure were to accommodate this large winch.
OK, that makes sense...
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, August 24, 2015 - 04:23 PM UTC
Doc, Archer also makes the rivet decals. I was figuring they wouldn't be small enough but I guess I wasn't thinking about the availability of the smaller scales.
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Monday, August 24, 2015 - 06:54 PM UTC
Great set of D7 reference photos posted by Jim Carswell over on the MiniArt D7 tractor build blog:
Quote
Might be a little late but here's a link to some photos I took a little earlier this year of a D7 at Sinsheim. https://m.flickr.com/#/photos/133107260@N07/sets/72157652063698114/
Quote
Quote
Might be a little late but here's a link to some photos I took a little earlier this year of a D7 at Sinsheim. https://m.flickr.com/#/photos/133107260@N07/sets/72157652063698114/
Quote
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Tuesday, August 25, 2015 - 05:08 AM UTC
Dressing out the air cleaner. I added the basket retainers to the bottom, then rotated the pre-cleaner to an irregular angle as promised. Finally I will be cutting off the "glass jar" and replacing it with some clear rod.
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Tuesday, August 25, 2015 - 06:55 AM UTC
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Tuesday, August 25, 2015 - 10:18 PM UTC
I cut off the little vertical firewall from the engine bonnet on the kit part so I could mount this small firewall permanently on the model. This allowed me to go ahead and install the air cleaner. I created the small rectangular lighting fixture on the right side of the firewall used to illuminate the gauge cluster and also constructed the lower mounting bracket for the air cleaner.
(The light fixture on the Caterpillar was actually a stock civilian license plate illuminator from a 40's era automobile.)
I have now cut the "glass jar" off of the air cleaner and am on the search for a piece of plastic "glass" sprue that is the proper diameter to replace the jar.
p.s. I gotta get those floorboards installed before I build in so much stuff that I won't be able to get them in!
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 01:29 AM UTC
Some dozers had an additional reenforcement plate welded onto the center of the bowl. This was usually applied when the dozer was intended to push a scraper from behind.
Civilian, post war set-up
The Doyle book shows one such application where this plate was very crudely applied but I have seen a number of such installations where the plate had a rolled curve put into it which made the finished job look as smooth and fitted to the blade as it does here.
26 track links down 44 to go!
Civilian, post war set-up
The Doyle book shows one such application where this plate was very crudely applied but I have seen a number of such installations where the plate had a rolled curve put into it which made the finished job look as smooth and fitted to the blade as it does here.
26 track links down 44 to go!
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 06:56 AM UTC
The blade, bowl and legs structure under construction.
The threaded rods on the top corners of the dozer blade allowed the operator to manually adjust the "bite"' or the down angle of the blade. Not the most convenient arrangement but it worked!
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 08:55 AM UTC
Both Army Signal Corps photos from the collection of the National World War II Museum
p.s. The Armorama thread covering my tour of the World War II Museum in New Orleans, LA can be viewed at:
https://armorama.kitmaker.net/forums/226192&ord=&page=1
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 09:22 AM UTC
Shorpy Collection
Frenchy
Joined: December 02, 2002
KitMaker: 12,719 posts
Armorama: 12,507 posts
Posted: Wednesday, August 26, 2015 - 01:20 PM UTC
In fact the blade pictured above is made by LaPlant-Choate, not LeTourneau. That would explain the differences
https://classicdozers.files.wordpress.com/2013/03/scan6367a.jpg
H.P.
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 04:01 PM UTC
Well that explains a lot!
Again Thanks H.P.
____________________________________
A slightly off topic observation:
Noted on the attached photo; apparently the Caterpillar engine can be cranked directly if necessary, as indicated by the hole directly below the center of the radiator.
Also note the tack rows around the edges of the seat upholstery.
Again Thanks H.P.
____________________________________
A slightly off topic observation:
Noted on the attached photo; apparently the Caterpillar engine can be cranked directly if necessary, as indicated by the hole directly below the center of the radiator.
Also note the tack rows around the edges of the seat upholstery.
Frenchy
Joined: December 02, 2002
KitMaker: 12,719 posts
Armorama: 12,507 posts
Posted: Wednesday, August 26, 2015 - 04:49 PM UTC
Frenchy
Joined: December 02, 2002
KitMaker: 12,719 posts
Armorama: 12,507 posts
Posted: Wednesday, August 26, 2015 - 05:56 PM UTC
165thspc
#521
Joined: April 13, 2011
KitMaker: 9,465 posts
Armorama: 8,695 posts
Posted: Wednesday, August 26, 2015 - 06:19 PM UTC
US Navy Seabee Museum - Photos by Matt Folsom
as seen on the Classic Dozers website.
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