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 01-19-2023, 04:24 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default 1/10 Caterpillar D8T Build (3D Printed)

Just started on this very challenging build..



Reply With Quote
  #2  
Old 01-19-2023, 04:27 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

steering and throttle program mix on my Radiolink RC6GS pistol radio...
https://youtu.be/knUPPHZKtQg
Reply With Quote
  #3  
Old 01-20-2023, 10:07 AM
frizzen's Avatar
frizzen frizzen is online now
Big Dawg On The Bone
 
Join Date: Jan 2016
Location: indy, indiana
Posts: 1,826
frizzen is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

That looks like a really good start!

Which 90 deg. gearmotors are you using for this?
Any idea how much force those tracks can hold before something goes pop?
__________________
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
  #4  
Old 01-20-2023, 11:08 AM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by frizzen View Post
That looks like a really good start!

Which 90 deg. gearmotors are you using for this?
Any idea how much force those tracks can hold before something goes pop?
This one, 12v-65rpm, quite big and heavy too. 8mm shafts and 4mm mounting screws...
well, this build will be mostly for show and for the pleasure of seeing it run, so yeah, dont really know whats the max stress the tracks can hold, lets just see how long till the first one explodes...


Last edited by Orange RC Works; 01-20-2023 at 12:27 PM.
Reply With Quote
  #5  
Old 01-20-2023, 01:04 PM
frizzen's Avatar
frizzen frizzen is online now
Big Dawg On The Bone
 
Join Date: Jan 2016
Location: indy, indiana
Posts: 1,826
frizzen is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Thank you, i thought it looked like that's what you were using. I'd been considering those for a project. Any idea what size motors those use?

Sorry, I wasn't sure if you were planning to try staying plastic track, or prototype a few then send it off later to be printed in metal.

Can't wait to see this one come together
__________________
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
  #6  
Old 01-24-2023, 03:49 AM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by frizzen View Post
Thank you, i thought it looked like that's what you were using. I'd been considering those for a project. Any idea what size motors those use?

Sorry, I wasn't sure if you were planning to try staying plastic track, or prototype a few then send it off later to be printed in metal.

Can't wait to see this one come together
Did some research and found out the motors are permanent magnet motors 31ZY, might be 4000 rpm, 3mm motor shafts with screw gear installed, 12v at 65 rpm output on the gearbox shaft ... I used 2s lipo batts at first but the 7.2 volts seem to be underpowered, i changed to 3s and they seem to work well at 11.1 volts since the motors are rated at 12 volts. Im tempted to try a 4s pack but im afraid it might burn the motor out.
Reply With Quote
  #7  
Old 01-24-2023, 04:30 AM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Rolling chassis is ready for a test run...





and the motor test...

https://youtu.be/Cv8Vz40k5Qg
Reply With Quote
  #8  
Old 01-24-2023, 12:42 PM
jerry56 jerry56 is offline
Journeyman
 
Join Date: Apr 2019
Location: WV Panhandle
Posts: 539
jerry56 is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Wow your really moving along on this one.....looks like the drive train test was a success speed look pretty good....
Reply With Quote
  #9  
Old 01-24-2023, 01:53 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by jerry56 View Post
Wow your really moving along on this one.....looks like the drive train test was a success speed look pretty good....
At first i thought it was too slow and underpowered with a couple of 2S lipo batts, but when i changed to a 3S set, it changed dramatically.... and i think the speed kind of matches the full scale ones at full throttle... i had it climb a 20 degree incline and it climbed pretty good until the tracks starts sliding on a smooth wood surface lol... i think im ok with the power system and it did not get hot at all (motor & esc)... so i call it a success. thanks
Reply With Quote
  #10  
Old 01-31-2023, 10:19 AM
frizzen's Avatar
frizzen frizzen is online now
Big Dawg On The Bone
 
Join Date: Jan 2016
Location: indy, indiana
Posts: 1,826
frizzen is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Yeah good call, 3s makes more sence for the 12v motors.
3.7v, 7.4v, 11.1v

Your prints are looking really nice
__________________
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
  #11  
Old 02-02-2023, 04:10 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Latest update on this build... im now designing the actuators using a small gearmotor with an M3 lead shaft at 65 rpm, this will be the actuator to tilt the rippers





Reply With Quote
  #12  
Old 02-02-2023, 04:14 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by frizzen View Post
Yeah good call, 3s makes more sence for the 12v motors.
3.7v, 7.4v, 11.1v

Your prints are looking really nice
Thanks, I actually do post print processing to smoothen the edges and re drill the holes etc... the bottom of the print usually flare out on my ender 3 so i have to file it off more so when i have to join two parts together, i just hate cleaning up material removed from the prints lol...
Reply With Quote
  #13  
Old 02-05-2023, 03:09 AM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Gearmotor actuators for the rippers is done and installed...



test vidoes...

https://youtu.be/BsQvf6rvS60

https://youtu.be/zY9LS37m5LU

Last edited by Orange RC Works; 02-06-2023 at 01:59 AM.
Reply With Quote
  #14  
Old 02-06-2023, 01:52 PM
jerry56 jerry56 is offline
Journeyman
 
Join Date: Apr 2019
Location: WV Panhandle
Posts: 539
jerry56 is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Are they just N20 motors....
Reply With Quote
  #15  
Old 02-06-2023, 03:48 PM
ddmckee54 ddmckee54 is offline
Green Horn
 
Join Date: Dec 2011
Posts: 164
ddmckee54 is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

It looks like you are controlling the motors with just a toggle switch. Do you have any end limits on your actuators?

If you have the limits installed, I'd be very interested in seeing how you pulled that off. I've got several projects in the works where end limits on the actuators would be nice to have, but as usual with most RC projects, space is at a premium. Ten pounds in a five pound sack is a good description for a lot of projects.

You said that you are using the M3 version of the gearbox with the threaded rod output as your actuator screw. What are you using for the nut? I know you've got this type of actuator on your powered ramps, but they won't get used as much as the ripper will, or the blade if you use the same type of actuator there. Any concerns about lubrication and/or wear of the screw/nut?

Don
Reply With Quote
  #16  
Old 02-06-2023, 04:44 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by ddmckee54 View Post
It looks like you are controlling the motors with just a toggle switch. Do you have any end limits on your actuators?

If you have the limits installed, I'd be very interested in seeing how you pulled that off. I've got several projects in the works where end limits on the actuators would be nice to have, but as usual with most RC projects, space is at a premium. Ten pounds in a five pound sack is a good description for a lot of projects.

You said that you are using the M3 version of the gearbox with the threaded rod output as your actuator screw. What are you using for the nut? I know you've got this type of actuator on your powered ramps, but they won't get used as much as the ripper will, or the blade if you use the same type of actuator there. Any concerns about lubrication and/or wear of the screw/nut?

Don
I had to play around with the transmitter to get my settings just the way i wanted it, for the end point (EPA) of both ch 5 & 6, i think its just 20% both ways, and then i had to adjust the subtrim to make the servo horns be inline with the toggle switch... on the other hand, if you are asking about the end point where the motor reaches the longest or the shortest, i just play by feel and sound also, had to wait to hear till the motor starts to slow down and then hit the controls to center the servo, i use the on-off-on toggle switch so it stays when i flick the tx switch.. i was thinking of installing limit switches but with all the wires and switches, i wont look realistic anymore, not worried about cooling or lubrication either coz you only get to use it a few seconds or maybe minutes at a time to adjust the ripper, so it is fully enclosed as you can see...i use a regular m3 nut inserted at the bottom of the actuator rod, but 60rpm at the lead shaft and the M3 threads, it is kinda slow so i ordered the 200rpm ones and see if they will work better. Now, on the blade actuators, i will have to use a faster gearmotor and open the case a bit to have some bit of cooling and some grease on the lead shaft.. also since the 2 actuators will move independently, i may have to use ch 3 & 4 for each
Reply With Quote
  #17  
Old 02-06-2023, 04:48 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by jerry56 View Post
Are they just N20 motors....
Not really familiar with the motor type...but this is it...they are small..

Reply With Quote
  #18  
Old 02-06-2023, 06:16 PM
jerry56 jerry56 is offline
Journeyman
 
Join Date: Apr 2019
Location: WV Panhandle
Posts: 539
jerry56 is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Yeah those are n20s.. I have some like that of various rpm's so I can make my own cylinders like you did... been kicking the idea around for a while now just haven't started on them..
Did you print the inside of the cylinder to fit the nut or just press it in.... I have some of the brass press in threads I want to try too....
Reply With Quote
  #19  
Old 02-06-2023, 11:23 PM
Orange RC Works Orange RC Works is offline
Newbie
 
Join Date: May 2021
Posts: 55
Orange RC Works is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

Quote:
Originally Posted by jerry56 View Post
Yeah those are n20s.. I have some like that of various rpm's so I can make my own cylinders like you did... been kicking the idea around for a while now just haven't started on them..
Did you print the inside of the cylinder to fit the nut or just press it in.... I have some of the brass press in threads I want to try too....
all parts are printed...and the nut has a slot at one end of the rod where i insert a nut... these are the complete parts of the longer cylinder...

Reply With Quote
  #20  
Old Yesterday, 10:45 AM
jerry56 jerry56 is offline
Journeyman
 
Join Date: Apr 2019
Location: WV Panhandle
Posts: 539
jerry56 is on a distinguished road
Default Re: 1/10 Caterpillar D8T Build (3D Printed)

I see.....
The rod, a cylinder in a cylinder... so you don't see the rotation... That was my thought...
It looks good in 1/10 I'm not sure if I can get everything small enough to look right in 1/16.
I might have to just deal with seeing one cylinder rotating....
But thank you for showing the exploded view it helps a lot...
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 12:51 PM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.