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
  #1  
Old 02-06-2014, 04:16 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default 1/10 Liebherr Excavator R 984 Litronic

Hi folks,

after the invitation to this forum i wanna introduce my actual build. I started in August 2011 with the first planings and I hope to finish the model in the upcoming year.

This Liebherr Excavator is normally used in mining and road construction and has a operation weight (backhoe attachment) of 120 metric tons. While I do the R984 my Buddy works on his R9100, whitch is a little smaller (well, not really). While he´s doing the milling parts I do most of the planing, lathe work and sheet metal welding. Sometimes I´ll throw in a picture from the R9100, but till now there are just a few. OK, enough, let´s start with the hardware!

Those parts are laser cut steel and 2mm to 5mm thick.
Attached Images
File Type: jpg 2011-10-06 17.49.14.jpg (96.4 KB, 155 views)
File Type: jpg CW_2.jpg (74.4 KB, 122 views)
File Type: jpg CW_3.jpg (84.6 KB, 119 views)
File Type: jpg Fahrschiff_21.jpg (85.6 KB, 121 views)
File Type: jpg Fahrschiff_24.jpg (70.3 KB, 110 views)

Last edited by Markus K.; 02-06-2014 at 04:31 PM.
Reply With Quote
  #2  
Old 02-06-2014, 04:19 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

And some more
Attached Images
File Type: jpg Fahrschiff_26.jpg (69.8 KB, 103 views)
File Type: jpg Fahrschiff_27.jpg (77.1 KB, 110 views)
File Type: jpg Fahrschiff_28.jpg (22.3 KB, 115 views)
File Type: jpg Fahrschiff_15.jpg (71.8 KB, 130 views)
File Type: jpg Fahrschiff_18.jpg (61.9 KB, 131 views)
Reply With Quote
  #3  
Old 02-07-2014, 02:19 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Hi Kevin,

thanks for your comment!

About TIG welding, this is certainly not my job or occupation and not every bead is nice, so I had to learn and practice. For me it was very helpful watch Jodie from weldingtipsandtricks. Most of his videos is about TIG welding, but he shows MIG and Stick, also. The 1st I learned was to change the Tungsten into a new grinded, sharp one once if it got stuck.
Most parts here I welded without filler rod, just heated up and melted the corners together.

Here some more pictures from the under carriage.
Attached Images
File Type: jpg Montage_4.jpg (46.3 KB, 109 views)
File Type: jpg Laufrollenhalter_1.jpg (73.7 KB, 113 views)
File Type: jpg Laufrollenmontage_1.jpg (44.2 KB, 116 views)
File Type: jpg Fahrschiff_32.jpg (42.4 KB, 109 views)
File Type: jpg 2013-06-04 18.24.38.jpg (48.6 KB, 135 views)
Reply With Quote
  #4  
Old 02-07-2014, 02:23 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

...and some more. If there are any question feel free to ask!
Attached Images
File Type: jpg 2013-06-04 18.24.28.jpg (39.0 KB, 90 views)
File Type: jpg 2013-09-13 21.30.16.jpg (22.8 KB, 106 views)
File Type: jpg 2014-01-24 18.29.51.jpg (37.0 KB, 95 views)
File Type: jpg 2014-01-24 18.30.00.jpg (32.8 KB, 95 views)
File Type: jpg Turas_Explosionsdarstellung_Name.jpg (25.2 KB, 153 views)
Reply With Quote
  #5  
Old 02-07-2014, 05:44 PM
dirtpusher9's Avatar
dirtpusher9 dirtpusher9 is offline
Moderator
 
Join Date: Aug 2010
Location: Texas
Posts: 457
dirtpusher9 has a spectacular aura aboutdirtpusher9 has a spectacular aura about
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Welcome Markus. That's a great start to what will be a big beast when finished.
__________________
Joe
Reply With Quote
  #6  
Old 02-08-2014, 03:58 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Well, it is the best if you practice again and again. Today I welded a couple hours using grey tungsten and after a while I tested the gold ones. But those didn't work as well as the grey ones, I got stuck very often with the same settings on the welder. Because of this I switched back to the gray tungsten. Pictures from this welding will be posted later.
First some pictures from the 2-stage Planetary gear inside the drive wheel. Gear ratio is 20.36 : 1.
Attached Images
File Type: jpg Turas_Aufbau_2.jpg (59.2 KB, 118 views)
File Type: jpg Turas_Aufbau_3.jpg (74.7 KB, 153 views)
File Type: jpg Turasdeckel_2.jpg (41.0 KB, 114 views)
File Type: jpg 2012-09-19 19.21.28.jpg (60.8 KB, 119 views)
File Type: jpg Antrieb1.jpg (45.1 KB, 108 views)
Reply With Quote
  #7  
Old 02-08-2014, 04:04 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Some more from the drive train. The gearbox is shimed with thin brass sheets for proper chain setup. The motors are brushless outrunner with 120 Watt and 760kv.
Attached Images
File Type: jpg Antrieb2.jpg (43.8 KB, 124 views)
File Type: jpg Antrieb4.jpg (64.0 KB, 136 views)
File Type: jpg Antrieb5.jpg (69.5 KB, 122 views)
File Type: jpg Antrieb6.jpg (62.0 KB, 134 views)
File Type: jpg Antrieb7.jpg (64.5 KB, 154 views)
Reply With Quote
  #8  
Old 02-08-2014, 07:27 PM
doodlebug's Avatar
doodlebug doodlebug is offline
Big Dawg On The Bone
 
Join Date: Dec 2010
Location: South 40 Swamp, Utah
Posts: 2,398
doodlebug is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Great job on the final drives! Keep the pictures coming.
Cheer's, Neil.
Reply With Quote
  #9  
Old 02-08-2014, 08:02 PM
Fired up Fired up is offline
Newbie
 
Join Date: Dec 2011
Location: Burtts Corner NB
Posts: 112
Fired up is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

very nice
Reply With Quote
  #10  
Old 02-09-2014, 10:05 AM
JAMMER JAMMER is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Liverpool New York
Posts: 1,346
JAMMER is on a distinguished road
Thumbs up Re: 1/10 Liebherr Excavator R 984 Litronic

Hi did you cut all the internal and external gears in you drive? If you did you did a very nice job. Ed
Reply With Quote
  #11  
Old 02-09-2014, 10:29 AM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Hi Ed,

just the internal gears are laser cut. In every drive is a stack of 10 sandpaper-cleaned pieces with a complete height of 20mm. Using thicker material is less/ poor quality. The internal gears were bought online. Sorry for the blurry picture, it shows one of the int. gears. The small brass gear was just for checking.
Attached Images
File Type: jpg Turas_Hohlrad_Muster.jpg (87.3 KB, 68 views)
Reply With Quote
  #12  
Old 02-09-2014, 11:29 AM
JAMMER JAMMER is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Liverpool New York
Posts: 1,346
JAMMER is on a distinguished road
Thumbs up Re: 1/10 Liebherr Excavator R 984 Litronic

Hello so you laser cut the internal gears, I was thinking you cut then your self and was wondering how you did it. Your way is a lot easer than broaching them and also buying the other gears saves a lot of time but you still did a nice job. Ed
Reply With Quote
  #13  
Old 02-09-2014, 11:33 AM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Ed, stay tuned! I'll come up with the turntable next. It has an internal gear, also, but bigger teeth and wasn't lasercut
Reply With Quote
  #14  
Old 02-09-2014, 11:37 AM
JAMMER JAMMER is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Liverpool New York
Posts: 1,346
JAMMER is on a distinguished road
Thumbs up Re: 1/10 Liebherr Excavator R 984 Litronic

OK I sure will be looking forward to that. Ed
Reply With Quote
  #15  
Old 02-10-2014, 06:54 AM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Hi folks,

here now the (original built) turntable. It has an internal gear with 107 teeth, modul 2. This gear are two parts, every one got a radius on the edge for the 5,5mm steel balls. The gear is bolted to the gear carrier with 48 screws.
Then there are two outer rings with a radius for the balls, also. They are filled with 135 balls and then evenly closed with 3 screws. The upper body of the excavator will be bolted with 45 screws to the turntable.
The internal gear was done by my buddy Michael on his cnc-mill with a 0.4mm endmill. The screws were made by myself, 96 pcs for this turntable and 288 for the Michaels turntable for the R9100.

As I mounted the stuff together I found out, that the turntable need much power for turning, so I had to improve. With a sharpie I colored the ball groove and used a 5.5mm Drill shaping the groove with the drill flange, about 3 or 4 times. Now it runs smooth and without any play.
Attached Images
File Type: jpg Drehkranz_3.jpg (57.1 KB, 80 views)
File Type: jpg Drehkranz_5.jpg (55.3 KB, 83 views)
File Type: jpg Drehkranz_6.jpg (69.3 KB, 84 views)
File Type: jpg Drehkranz_8.jpg (67.2 KB, 75 views)
File Type: jpg Drehkranz_9.jpg (56.3 KB, 86 views)
Reply With Quote
  #16  
Old 02-10-2014, 06:58 AM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

here are some selfmade screw-pics:
Attached Images
File Type: jpg R9100_Drehkranzschrauben.jpg (81.7 KB, 62 views)
File Type: jpg Schrauben_4.jpg (69.1 KB, 45 views)
File Type: jpg Schrauben_5.jpg (69.2 KB, 43 views)
File Type: jpg Schrauben_3.jpg (61.4 KB, 42 views)
File Type: jpg Schrauben_2.jpg (68.5 KB, 43 views)
Reply With Quote
  #17  
Old 02-10-2014, 10:30 AM
JAMMER JAMMER is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Liverpool New York
Posts: 1,346
JAMMER is on a distinguished road
Thumbs up Re: 1/10 Liebherr Excavator R 984 Litronic

Nice work on the screws but cutting the internal gear on a cnc mill that took some planning and skill with the CAD. Ed
Reply With Quote
  #18  
Old 02-10-2014, 11:29 AM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

Ed, the CAD-work wasn't sooo hard. I used CATIA V with a plugin for gears. So I had only had to type in some numbers and voila... a single file came out with over 30 MB
Reply With Quote
  #19  
Old 02-10-2014, 05:31 PM
ihbuilder's Avatar
ihbuilder ihbuilder is offline
Fabrication and design , super moderator
 
Join Date: Aug 2010
Location: in a cage in Auburn,PA
Posts: 3,557
ihbuilder is a jewel in the roughihbuilder is a jewel in the roughihbuilder is a jewel in the roughihbuilder is a jewel in the rough
Default Re: 1/10 Liebherr Excavator R 984 Litronic

welcome Markus great job on the model so far Your slew assembly is exactly the way I am making them on my cat385s . I have my internal drawn and programed for the cnc mill comes to about 2 hrs cutting time .Just to find time to cut them . How long did it take to cut yours out ?
__________________
RIP FreddyGearDrive 2-12-59/12-19-11

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #20  
Old 02-10-2014, 05:55 PM
Markus K. Markus K. is offline
Newbie
 
Join Date: Feb 2014
Posts: 61
Markus K. is on a distinguished road
Default Re: 1/10 Liebherr Excavator R 984 Litronic

I don't know exactly because my buddy is/ was doing the milling work. I think, the mill was running about 3-4 hours. We used pre-lasered parts for this. Here some more pictures from the fabrication.
Attached Images
File Type: jpg Foto 22.09.12 19 46 27.jpg (47.2 KB, 80 views)
File Type: jpg Foto 26.08.12 20 12 12.jpg (61.3 KB, 90 views)
File Type: jpg Foto 25.08.12 22 07 24.jpg (71.6 KB, 86 views)
File Type: jpg Foto 05.10.12 17 02 32.jpg (47.8 KB, 80 views)
Reply With Quote
Reply


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

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 07:44 PM.


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