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
  #361  
Old 09-11-2016, 02:21 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Today's report
Decided to haul dozer inte workshop again for dismantel.
The good side, have done it some times now and is very easy to brake down into pieces.
The bad side, I hate oil, and oily you get. Always oil in all tubings, valves and that is coming out when you don't want to.


As you can see everything has to be removed, incl one side of track to get hydraulic motors out. The valves (with blue servos) will be removed and replaced.

Decided is to seperate the 2 drive circuits from rest of hydraulics (blade , ripper, 463). If that will make dozer run is to be seen. The other hydraulics will be a seperate system with electrical driven pump, smaller valves, same as you guys use for models with bigger demand like excavators. Supplier can be Premacon or Tobias Breaker. With this change a complete new tank (diesel in 1:1 machine) will be built with new pump and motor built in. This is needed anyhow if, IF dozer should be electrified in the future (should have done that from beginning )

A question for you used to build with electric motors. Any suggestion of supplier? The size and design on dozer requier 120Nm torque on each side and with a 1:4 reduction in hub results in a 30Nm (rpm between 80 and 250 for correct speed). 12V or 24V? Type of elec. control?
Space available is W 7,5" L 20-24" H 8" for everything incl battery.
Thanks in advance.
Dan
Reply With Quote
  #362  
Old 09-11-2016, 05:32 PM
9W Monighan's Avatar
9W Monighan 9W Monighan is offline
Big Dawg On The Bone
 
Join Date: Aug 2010
Location: Pittsburgh,PA.
Posts: 1,283
9W Monighan will become famous soon enough9W Monighan will become famous soon enough
Default Re: D8R +463 in 1/5,6

Can you run the final drives with an electric motor/pump combination?
Reply With Quote
  #363  
Old 09-12-2016, 03:09 PM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

Quote:
Originally Posted by 9W Monighan View Post
Can you run the final drives with an electric motor/pump combination?
Having 2 options now:
1-gas engine/hydrostatic drive as today + electrical driven pump for blade/ripper
2-electrical driveline (complete new) + electrical driven pump for blade/ripper
Option 2 will need more rebuild than no 1 of course, but have other positives like running inhouse (if there's a floor for a 500lbs machine with steel tracks)

If I can find suitable motors incl 90 degree gearbox within spec above, that would be a good solution.

Dan
Reply With Quote
  #364  
Old 09-12-2016, 10:59 PM
dozerbuilder dozerbuilder is offline
Newbie
 
Join Date: Dec 2014
Posts: 93
dozerbuilder is on a distinguished road
Default Re: D8R +463 in 1/5,6

Hey Dan. I did a lot of research for drive on my 1/16th CHTZ T-800 dozer and went electric for all the reasons you are considering.
http://www.rctruckandconstruction.co...ad.php?t=11337

I chose 25amp (stall) car seat motors @ 12V. Of course yours is heavier than my 60lb weight model.

Have you considered 24V wheechair worm-drive gear-head 90 deg motors? They are very powerful and generally run around 100-200RPM which could be controlled with an ESC motor controller, maybe a Dimension Engineering 60Amp.

Like these on aliexpress:
https://www.aliexpress.com/item/2013...479201429.html

Or this type here:
https://www.aliexpress.com/item/250w...1-17b1309b4cc1


They have all the engineering data you'd need to assess them. You could gear them down easily with say 06B ISO or 08B simplex chain drive at say 4:1 or 5:1 which would provide an output speed at the sprockets of approx 30-40rpm and would be very powerful.

Last edited by dozerbuilder; 09-12-2016 at 11:15 PM. Reason: add link
Reply With Quote
  #365  
Old 11-15-2018, 10:41 AM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

It's been a long time with nothing happening. now I think it's time to finalize this build
My thought now is to make it electric drive and get a new smaller hydraulic system for blade and ripper (like Premacon).
Have checked a lot motors from China and most can not be fitted inside frame.
So, question to you guys, what's your expirience with using motors from drillmachines. Here's a picture of one possible motor, a Makita drill with a very powerful motor (up to 110Nm). Model needs 30Nm on each side to get a prototypical drawbar so there's some extra and motors do not need to go at maximum power. Will try use speed control and battery incl with drill.
Picture in next reply (due to slow loading)
Dan
Reply With Quote
  #366  
Old 11-15-2018, 11:06 AM
D8R D8R is offline
Apprentice
 
Join Date: Sep 2010
Location: Ronninge, south of Stockholm, Sweden
Posts: 425
D8R is on a distinguished road
Default Re: D8R +463 in 1/5,6

https://scontent-arn2-1.xx.fbcdn.net...e7&oe=5C6EFF1D

Last edited by D8R; 11-15-2018 at 11:21 AM.
Reply With Quote
  #367  
Old 11-17-2018, 05:44 AM
frizzen's Avatar
frizzen frizzen is offline
Big Dawg On The Bone
 
Join Date: Jan 2016
Location: indy, indiana
Posts: 1,991
frizzen is on a distinguished road
Default Re: D8R +463 in 1/5,6



I know some elect drills give a 2speed trans. If drill motors don't fit, i've also heard automotive Power Seat Motors can work pretty well

Cool project, that's pretty sweet.
__________________
What do ya mean "Cars are neither Trucks or Construction"?
It's still scale, and i play fairly well with others, most of the time...
Reply With Quote
Reply

Tags
1/5.6, big scale, cat, d8r, dozer


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 03:43 PM.


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