RC Truck and Construction  

Go Back   RC Truck and Construction > RC Truck's Ag and Industrial Equipment and Buildings > Construction Equipment

Construction Equipment If it digs, pushes, hauls dirt "off road" post it here.


Reply
 
Thread Tools Display Modes
  #61  
Old 03-21-2021, 01:09 PM
Originalrob Originalrob is offline
Newbie
 
Join Date: Apr 2019
Posts: 53
Originalrob is on a distinguished road
Smile Re: Newbie Scratch Build - D575A Dozer

Quote:
Originally Posted by Lil Giants View Post
Well done Robert!

Have you weighed it yet?
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
Reply With Quote
  #62  
Old 03-21-2021, 01:25 PM
Originalrob Originalrob is offline
Newbie
 
Join Date: Apr 2019
Posts: 53
Originalrob is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Quote:
Originally Posted by sparkycuda View Post
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
Thanks Ken/Egronwold

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 👍🏼
Reply With Quote
  #63  
Old 03-25-2021, 04:27 PM
sparkycuda's Avatar
sparkycuda sparkycuda is offline
Journeyman
 
Join Date: Aug 2010
Location: English, IN
Posts: 697
sparkycuda is on a distinguished road
Default 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
__________________
Big iron is awesome!
Reply With Quote
  #64  
Old 03-29-2021, 06:35 PM
Lil Giants's Avatar
Lil Giants Lil Giants is offline
BANNED
 
Join Date: Aug 2010
Location: Saskatchewan
Posts: 4,431
Lil Giants has disabled reputation
Default Re: Newbie Scratch Build - D575A Dozer

80kg WOW

Some general measurements of blade? LxH ...the dozer itself LxWxH? I'm not familiar with the background objects in your pictures to get an idea of its size.
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get!

Joe
Reply With Quote
  #65  
Old 04-16-2021, 09:41 PM
sparkycuda's Avatar
sparkycuda sparkycuda is offline
Journeyman
 
Join Date: Aug 2010
Location: English, IN
Posts: 697
sparkycuda is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Just some comparative weights from the real machine.

D575A-3SD Super Dozer. Operating weight 336,000 lbs. Counterweight was 11,900 lbs. Had a 90 cubic yard blade.

D575A-3SR Super Ripper. Operating weight 289,000. Single Shank ripper could rip 6'9" deep.

They were rather large!!

Ken
__________________
Big iron is awesome!
Reply With Quote
  #66  
Old 05-02-2021, 04:31 PM
skeeter skeeter is offline
Big Dawg On The Bone
 
Join Date: Jul 2017
Location: Washington State
Posts: 1,732
skeeter is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

It's great to see this beast come to life! I LOVE scratch builds!
Reply With Quote
  #67  
Old 05-03-2021, 08:09 AM
Originalrob Originalrob is offline
Newbie
 
Join Date: Apr 2019
Posts: 53
Originalrob is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Quote:
Originally Posted by sparkycuda View Post
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
HI Ken

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
Reply With Quote
  #68  
Old 05-04-2021, 10:14 PM
sparkycuda's Avatar
sparkycuda sparkycuda is offline
Journeyman
 
Join Date: Aug 2010
Location: English, IN
Posts: 697
sparkycuda is on a distinguished road
Default 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
__________________
Big iron is awesome!
Reply With Quote
  #69  
Old 05-10-2021, 06:29 AM
Originalrob Originalrob is offline
Newbie
 
Join Date: Apr 2019
Posts: 53
Originalrob is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Hi all,

Had a bit of time over the weekend so put together the steel for the ripper and installed to test out the weight balance.





I dont have the rams yet just just mocked up with some bars and rod ends. Took it for a spin and the balance is much better.

Rob
Reply With Quote
  #70  
Old 05-10-2021, 06:21 PM
sparkycuda's Avatar
sparkycuda sparkycuda is offline
Journeyman
 
Join Date: Aug 2010
Location: English, IN
Posts: 697
sparkycuda is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Keeps looking better all the time!

Ken
__________________
Big iron is awesome!
Reply With Quote
  #71  
Old 05-25-2021, 08:43 AM
Wibb Wibb is offline
Newbie
 
Join Date: Aug 2013
Posts: 4
Wibb is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Impressive machine!
Reply With Quote
  #72  
Old 05-25-2021, 09:30 PM
skeeter skeeter is offline
Big Dawg On The Bone
 
Join Date: Jul 2017
Location: Washington State
Posts: 1,732
skeeter is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

That machine looks fabulous with that ripper on it!
Reply With Quote
  #73  
Old 02-17-2023, 08:10 PM
dozerbuilder dozerbuilder is offline
Newbie
 
Join Date: Dec 2014
Posts: 93
dozerbuilder is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Do we have an update on this fabulous build?. How did it go in the dirt?
Cheers
Reply With Quote
  #74  
Old 02-18-2023, 05:12 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 108
Orange RC Works is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

This is one amazing build...
Reply With Quote
  #75  
Old 05-15-2023, 02:22 AM
Originalrob Originalrob is offline
Newbie
 
Join Date: Apr 2019
Posts: 53
Originalrob is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Hi everyone!
Wow I can’t believe it’s been so long. Life gets in the way too much now but I’m determined to get this done !

Just finalising the rams for the tilt on the blade and should be ready. Below is a video of the ripper hydraulic test which worked out great. More to follow. Thanks for the interest in the build.

Rob

https://youtu.be/-w3CDwHl3Ww
Reply With Quote
  #76  
Old 08-15-2023, 08:13 PM
dozerbuilder dozerbuilder is offline
Newbie
 
Join Date: Dec 2014
Posts: 93
dozerbuilder is on a distinguished road
Default Re: Newbie Scratch Build - D575A Dozer

Do we have an update on this fabulous build?. How did it go in the dirt? Is it completed??
Cheers
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 09:19 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.