CAT DW20 with #456 Scraper

[Rvjimd]

Steve,

Is the scraper true scale of 1:25? In your pictures it looks pretty big. I always have a hard time with this because some diecast manufactures don't hold too tight to the scale and others do. Also, I just don't know most of the full scale equipment that well, so one dozer or crane or whatever may in full scale actually be huge compared to another of the same type, but designed for a different purpose.

Anyway, that scraper in 1:25 scale looks bigger than my 1:16 dozer? I guess I should go take some measurements of my dozer, and then find the actual dimensions of the 1:1 and see how it stacks up?

Jim

[9W Monighan]

Originally Posted by Rvjimd

Steve,

Is the scraper true scale of 1:25? In your pictures it looks pretty big. I always have a hard time with this because some diecast manufactures don't hold too tight to the scale and others do. Also, I just don't know most of the full scale equipment that well, so one dozer or crane or whatever may in full scale actually be huge compared to another of the same type, but designed for a different purpose.

Anyway, that scraper in 1:25 scale looks bigger than my 1:16 dozer? I guess I should go take some measurements of my dozer, and then find the actual dimensions of the 1:1 and see how it stacks up?

Jim

A DW20 was a big machine in it's day.
Yes, It's 1/25th scale I measured it and it is; 21-5/8 long push block to grill guard. 5-3/4'' widest part of scraper, 4-1/2'' tall at goose neck,
Wheel center line on tractor; 2-5/16'' big tires; 3-1/8'' h x 1-3/16'' w
Front tires;2''h x 5/8''w
You can get an idea just how big it is. The OC12 is about a Cat D4 in size comparison.
Once you master that Oliver You should try to convert some of these CAT models. The ACMOC club has tons of these sitting on their shelves so I doubt they will be worth any large amount of $$ in the future due to lack of sales. So cutting one up won't be such a bad idea. One of their D9 models would look pretty cool push loading the DW20 with the right mix of dirt to work in.

[Rvjimd]

Steve,

You won't have to twist my arm to much. I have always wanted to convert a Cat dozer and use it to push a scraper!

Got to figure out how to make my motor mounts so they have some adjustability to accommodate different sized gearing. I feel pretty good about the current refit. I think it is going to work good.

Thanks for all the info!

Jim

[kevmeister]

I'll have to get a picture of my dad's old rig.

John Deere had a corporate partnership with Hancock manufacturing (late 50's-early 60's), and they made an interesting contraption called an Elevating Scraper. Just picture the scraper in this thread having hydraulics for the bucket dump, bucket lift and a rotating paddle-blade assembly (to push loose granular material into the bucket and to keep it there). It was, essentially, an 840 John Deere tractor hooked up to the Hancock elevating scraper bucket (8 yards cap.). the thing was great for building roads, approaches, and for working on dikes and irrigation canals (they were working in the Lethbridge-Medicine Hat area of Alberta). he still has the rig and it still works (but needs a lot of work).