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Construction Equipment If it digs, pushes, hauls dirt "off road" post it here. |
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#1
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Re: Newbie Scratch Build - D575A Dozer
Well done Robert!
Have you weighed it yet?
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Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get! Joe |
#2
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Re: Newbie Scratch Build - D575A Dozer
Being an avid Komatsu guy, this build is great! Detail, proportion, function are just like the real Super Dozer. Congratulations on a successful first hydraulic test.
Ken
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Big iron is awesome! |
#3
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Re: Newbie Scratch Build - D575A Dozer
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It’s been a such a long process with limited time to work on it but I can’t wait to get it to a point where I can push some dirt around! I have promised myself this summer it will happen 👍🏼 |
#4
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Re: Newbie Scratch Build - D575A Dozer
Don't think you miscalculated on the weight/balance concern. The real dozer has a massive counterweight when not equipped with a ripper. The 1:1 machine is very nose-heavy without either. So, maybe just about right!
Ken
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Big iron is awesome! |
#5
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Re: Newbie Scratch Build - D575A Dozer
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i think your right, i added some crude weight to the back and its rolling a lot better on the tracks now. Plus i added some stiffer rate springs to the tensioner and that seems to help as well. I have started the ripper now so should have it attached in a couple of weeks. in the mean time i added some details to the blade: must be like strengthening bars on the side of the blade My own version: I will take some pics to give a sense of size later today maybe with a can of coke or something but blade is about 500 mm wide ( 21 inch) x 250 high (10inch) Rob |
#6
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Re: Newbie Scratch Build - D575A Dozer
Yes, ribs for strengthening but also anti-abrasion. These machines were used to push in all kinds of material. WV and KY machines worked slot-dozing in a lot of sandstone, so experienced extreme wear on the ends - I've seen those ribs completely worn away. Often users would add more abrasion resistant steel on the blade ends before ever putting them to work.
While the weight is extreme compared to other RC dozers, it was huge in real life - largest production dozer in the world. Big dozers are just heavy! You are doing a great job! Ken
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Big iron is awesome! |
#7
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Re: Newbie Scratch Build - D575A Dozer
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#8
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Re: Newbie Scratch Build - D575A Dozer
Hey !
So had a bit of free time this afternoon and weighed it up as I need to think about the balance issue that’s causing it’s to sit on it’s front idlers. I don’t know what happened but I have miscalculated the weight somewhere. Without the blade and arms it’s 51kgs. The blade and arms is 21kgs so that’s why it’s causing an issue.I weighed the ripper metal I have ready to assemble and it’s about 7kgs plus it hangs far about the back it will help balance some of the blade weight. I might have to add some steel ballast to get it right. So in total maybe 80kgs in the end. A bit heavier than I anticipated but the motors still move it about easily I can see my glass bathroom scales getting cracked tho |
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