NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #16  
Old March 26th, 2021, 12:31
sdspearo's Avatar
sdspearo sdspearo is offline
NAXJA Member
 
Join Date: Mar 2011
Location: Encinitas, Ca
Posts: 849
Re: On-board welder, aka "the weldernator"

[QUOTE=XJlimitedx99;246725806]
Quote:
I like how you have it setup with what I'm assuming are a volt meter and ammeter, along with a breaker. Do you have a capacitor in the circuit or is it straight alternator juice? I can't imagine the alternator would be very happy maintaining conditions like that for very long.
The two displays are voltage meters, one for the field voltage (which is just the battery voltage since the regulator was bypassed) and the other is the alternator output (and receptacle) voltage.

Adding a big cap between the leads would help smooth out the output, but in the short time I've used this I don't see a reason to add one. I may later just to experiment.

Yeah, running an alternator like this is tough on it since you're essentially maxing it out. Not sure what the duty cycle is, but I've read on similar setups you can go through a couple of rods before you have to let it cool down. The alt does get hot and adding a little muffin fan would help. Probably not needed in this case since it's only for quick trail fixes.

Quote:
So, I'm curious. What do you do for work? What kind of experience do you have that gave you the confidence/inspiration to tackle this?
M.E., retired for a couple years now.

Quote:
Would this be possible using the vehicle's alternator?
It's possible, I remember seeing some kits sold like this. You'd have to add a switch to hard wire batt voltage directly to the alt rotor, bypassing the regulator. You'd also have to make sure the alt doesn't have avalanche diodes, or use an external rectifier like I did.
__________________
'96 XJ: Locked up D44's on 35" Milestar Patagonia's, ChroMo axles, 6" lift w/ 3 link front, 4 link rear, AX15, Atlas 5.0, Internal cage, DIY beadlocks, hydro assist, big ass stinger!, ...
Reply With Quote
  #17  
Old March 26th, 2021, 12:43
sdspearo's Avatar
sdspearo sdspearo is offline
NAXJA Member
 
Join Date: Mar 2011
Location: Encinitas, Ca
Posts: 849
Re: On-board welder, aka "the weldernator"

Quote:
Originally Posted by RCP Phx View Post
You can do the same if not better and definitely cheaper with batteries.
I've done battery welding before and never got good results, although only with two batteries. Started carrying some welding rods (along with jumper cables) in the Jeep just in case. One time had to leave a buddy's Jeep on the trail overnight and come back the following day with a real welder...the battery welds kept failing.

Also seemed kinda dicey shorting the batts out like that for extended periods of time...always covered them with floor mats in case they went "kaboom"
__________________
'96 XJ: Locked up D44's on 35" Milestar Patagonia's, ChroMo axles, 6" lift w/ 3 link front, 4 link rear, AX15, Atlas 5.0, Internal cage, DIY beadlocks, hydro assist, big ass stinger!, ...
Reply With Quote
  #18  
Old April 1st, 2021, 08:22
sdspearo's Avatar
sdspearo sdspearo is offline
NAXJA Member
 
Join Date: Mar 2011
Location: Encinitas, Ca
Posts: 849
Re: On-board welder, aka "the weldernator"

Something I forgot to mention...another benefit of these weldernators is that they can also weld RUBBER with this new special rod. It's an elastomer and butyl infused welding rod, available on Amazon (is there ANYTHING they don't carry?!).

Something about the pulses created by the AC to DC conversion full bridge rectification creates a microplasma that fuses the rubber together. Pretty cool. Worked great to repair one of my tires. I was skeptical at first, but check it out...


BEFORE



AFTER
__________________
'96 XJ: Locked up D44's on 35" Milestar Patagonia's, ChroMo axles, 6" lift w/ 3 link front, 4 link rear, AX15, Atlas 5.0, Internal cage, DIY beadlocks, hydro assist, big ass stinger!, ...
Reply With Quote
  #19  
Old April 1st, 2021, 09:11
Rob Mayercik's Avatar
Rob Mayercik Rob Mayercik is offline
NAXJA Member #920
 
Join Date: Jun 2002
Location: NJ, U.S.A.
Posts: 2,695
Re: On-board welder, aka "the weldernator"

Welding rubber? Sounds handy for fixing tires, but man that must smell something awful while you're working...
__________________
1992 Cherokee Laredo: "A wonderful balance of grace and rust"
1984 Dodge Omni
2002 Volkswagen Jetta GLS TDI
Reply With Quote
  #20  
Old April 1st, 2021, 09:18
WAZZUXJ's Avatar
WAZZUXJ WAZZUXJ is offline
SoCal_XJ FB
 
Join Date: Dec 2011
Location: Lake Elsinore, CA
Posts: 645
Re: On-board welder, aka "the weldernator"

No more using screws to fix chunking!

Reply With Quote
  #21  
Old April 1st, 2021, 09:42
XJlimitedx99 XJlimitedx99 is offline
NAXJA Member
 
Join Date: Oct 2012
Location: North Walpole, New Hampshire
Posts: 74
Re: On-board welder, aka "the weldernator"

Immediately thought you were joking, then questioned my sanity as I entertained the idea, and finally understood the intent of the situation.

Smart science guy used the big words to make a funny that almost got me
Reply With Quote
  #22  
Old April 1st, 2021, 16:30
Anak's Avatar
Anak Anak is offline
Stranger
 
Join Date: Sep 2013
Location: In the digital ghetto
Posts: 4,019
Re: On-board welder, aka "the weldernator"

Who knew rubber was so conductive?


__________________
Project "Scope Creep": 1996 4wd 4.0L, AX15

The "Varmint-Mobile": 1997 ZJ Laredo, 4wd, 4.0L, Slushbox
Reply With Quote
  #23  
Old April 1st, 2021, 21:01
sdspearo's Avatar
sdspearo sdspearo is offline
NAXJA Member
 
Join Date: Mar 2011
Location: Encinitas, Ca
Posts: 849
Re: On-board welder, aka "the weldernator"

Dang, can't fool any of you guys!
__________________
'96 XJ: Locked up D44's on 35" Milestar Patagonia's, ChroMo axles, 6" lift w/ 3 link front, 4 link rear, AX15, Atlas 5.0, Internal cage, DIY beadlocks, hydro assist, big ass stinger!, ...
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Keyless entry "board" summitlt OEM Tech Discussion 4 September 2nd, 2008 18:49
powering a 220v small welder "on board" Simon 88YJ94XJ Modified Tech Discussion 8 November 26th, 2006 17:54
RePost: DeeZee "running board steps" as rock guards? redxjjoe Modified Tech Discussion 2 December 21st, 2003 17:05


All times are GMT -7. The time now is 01:06.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014