RC Truck and Construction  

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

Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip


Reply
 
Thread Tools Display Modes
  #1  
Old 09-15-2017, 07:33 PM
arh1a arh1a is offline
Newbie
 
Join Date: Sep 2016
Posts: 9
arh1a is on a distinguished road
Default 4200XL - How to run off a 12v car battery

Hi,

I'm looking to run my excavator off a 12 car battery, I have attached a photo of the battery I plan to use. I have 5 meters of 12AWG lipo wire I can use. Is it just a case of connecting it to the car battery or should I fit an online fuse? I'm just concerned about the high amps of the car battery as I don't want to damage any of the electronics.

Thanks in advance
Attached Images
File Type: jpg WP_20170906_18_19_31_Pro.jpg (157 Bytes, 93 views)
Reply With Quote
  #2  
Old 09-15-2017, 09:52 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: 4200XL - How to run off a 12v car battery

I CAN'T see the pic(s)
Reply With Quote
  #3  
Old 09-15-2017, 11:29 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: 4200XL - How to run off a 12v car battery

I've done this many times with Leimbach excavators... inline fuse is a good idea... but the chinese model will run better with a lower voltage in the 8v range.
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get!

Joe
Reply With Quote
  #4  
Old 09-16-2017, 12:25 PM
arh1a arh1a is offline
Newbie
 
Join Date: Sep 2016
Posts: 9
arh1a is on a distinguished road
Default Re: 4200XL - How to run off a 12v car battery

Thank you for confirming I will definitely fit an inline fuse in that case, what amp fuse would you recommended?

Tried having a look for a 8v battery and can only find golf cart ones which seem expensive so would ideally like to use the car battery. Would a voltage reducer help in this case if there is such a thing?

I've reattached a photo of the specs of the battery but just in case it still doesn't work this is the specs of the battery I have:

Bosch S5 005
610A (EN)
63Ah 12V
Attached Images
File Type: jpg WP_20170906_18_19_31_Pro.jpg (157 Bytes, 78 views)
Reply With Quote
  #5  
Old 09-16-2017, 03:38 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: 4200XL - How to run off a 12v car battery

There's never any documentation of the electronics that come with the chinese models that I've seen... I think the amp esc for hyd pump is something like 125amp. The brushless motor for the pump is overly large & therefore turned back to 19% EPA (approx) in radio settings. 12v car battery will be typically 13,5 to 14,2v full charge. Start with a 10amp fuse... maybe

I think it's a diode that's needed to reduce voltage from the car battery... if you know an electrician, he might have something on hand... maybe a light dimmer switch would work, use a voltage meter to set your output.
__________________
Sharing knowledge is one thing that defies basic arithmetic logic --- the more you share, the more you get!

Joe
Reply With Quote
  #6  
Old 10-01-2017, 04:52 PM
arh1a arh1a is offline
Newbie
 
Join Date: Sep 2016
Posts: 9
arh1a is on a distinguished road
Default Re: 4200XL - How to run off a 12v car battery

Yeah it is a shame they don't have any documentation for the electronics. I guess that's to be expected with a budget excavator. I will start with a 10amp fuse and see how it goes.

I don't know anyone but will look into it more. That's a good idea maybe a dimmer might work with a volt meter to get to the 8v range. I did speak to someone in Maplins today but he just seemed to say it was over complicated.

Thanks for all your help I will update how I get on once I've tested a few more things.
Reply With Quote
  #7  
Old 10-01-2017, 04:57 PM
arh1a arh1a is offline
Newbie
 
Join Date: Sep 2016
Posts: 9
arh1a is on a distinguished road
Default Re: 4200XL - How to run off a 12v car battery

I wonder if something like this would work although seems abit cheap?

http://vi.raptor.ebaydesc.com/ws/eBa...32&cspheader=1

Last edited by arh1a; 10-01-2017 at 05:22 PM.
Reply With Quote
  #8  
Old 10-01-2017, 06:58 PM
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: 4200XL - How to run off a 12v car battery

Dimmers don't tend to like DC.
Diodes work, but the volts sag with discharge.
How about an adjustable power supply? Something that lets you do 6-12v should do.

If you've got an amp clamp, try to *really* load up the machine hard and see what it can pull from the battery, then add on to that number. If you can make it pull 10 amp, go with something capible of atleast 15a.

One of my models has (4) servos that can stall at 2.5a each, so you need to bring enough current for everyone. it's a shame you don't have specs on any of the components or we could give a real answer.

Something like this, probably the 12a or another bigger one
https://www.amazon.com/DROK-Numerica...RG9?th=1&psc=1

If you want to cheap out and go plugged into the wall outlet, you can hack an old computer power supply with a little creativity.
__________________
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


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 06:58 AM.


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