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Thread: My Home Made Welder - and a few questions

  1. #1
    Variable Bitrate will1384's Avatar
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    Lightbulb My Home Made Welder - and a few questions

    I made another crazy thing - this is different than my
    Generator, It does look similar - I used the same type motor
    and cart

    Briggs 6.5hp Intek motor - like my
    Home Made Generator


    Chrysler Alternator 75amp - for charging the battery

    Chevy CS130 Alternator 105amp - For welding, the regulator has
    been removed, the diodes and case upgraded with a Iceberg Kit,
    three 50 Amp diodes, and 12v now goes directly to the rotor field
    brush from the battery

    2 gauge welding cable

    A rheostat to vary the power going to the field of the welding
    alternator

    ---------------------------------------------------------------


    But and here is a problem - I cant seam to weld,
    it tries but it wont be stable, and the blobs
    of welder rod dont even stick to the metal
    I only tried 3/32" rods, guess I could try 1/16"
    but that would mean that I am getting less than
    40amps

    I thought it might be a shorted rotor but the rotor
    reads 6.8 ohm

    I thought it might be the speed that the alternator is
    going but the 5 inch pulley - should be putting the
    Alternators at about 9000rpm - I think
    , a 6 inch pulley
    should do 10800

    any I deas

    Its most likey something simple

    Thanks
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  2. #2
    Variable Bitrate will1384's Avatar
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    a few more pics
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  3. #3
    Variable Bitrate will1384's Avatar
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    Its not done yet - still need to make a belt gaurd
    and reinforce the thing that holds the alternators
    paint it, add a battery box- ect ect

    I may try another Chrysler Alternator to replace the cs130
    - I got a 100amp it looks like the alternator on the top

  4. #4
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    dude you really need to just buy a welder, they're so cheap

    sounds like the power just isn't sufficient

    James
    www.digital-car.co.uk - The UK CarPC Forum

  5. #5
    Banned xdjxklusivex's Avatar
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    hhahahah man i love ur creations it looks awsome but yeah id buy my own welder cuz u dont want to weld on a muffler and then think its fine and drive down the road and then come home witout a muffler :-P

  6. #6
    Variable Bitrate will1384's Avatar
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    Quote Originally Posted by Jamez_Warner
    dude you really need to just buy a welder, they're so cheap

    sounds like the power just isn't sufficient

    James

    Well the problem is that - you cant buy a 100% duty cycle
    welder cheap - plus I want a gas powered welder, and you
    are money ahead to make your own - thay cost $1000
    and up - used - and $2000-$3000 or more new

    I might have spent about $300 so far -

    Plus I have seen alternator/welders work - and there are lots
    of peeps on the internet that say they work good, so I am
    doing somthing wrong - I should be getting about 100amp

    I am going to check the diodes

  7. #7
    Low Bitrate mjd932's Avatar
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    I have a few of those diy welder pages bookmarked. I'd like to try one out sometime. Could having 2 alternators on that belt be bogging down the engine enough that you're not getting your 100 amps? Shouldn't need the smaller one anyways, right? Good luck.
    '03 Acura 3.2TL Type S
    '04 Buick Rainier, factory nav
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    -8" Lilliput TS, laptop, (too) large inverter, and I'm nowhere near putting them anywhere.

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  8. #8
    Variable Bitrate will1384's Avatar
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    Quote Originally Posted by mjd932
    I have a few of those diy welder pages bookmarked. I'd like to try one out sometime. Could having 2 alternators on that belt be bogging down the engine enough that you're not getting your 100 amps? Shouldn't need the smaller one anyways, right? Good luck.

    I think something is not right about my setup - I put a heavy duty
    100amp Chrysler alternator, on the bottom - I was using that small
    one to try to weld

    I am getting the same thing - sparks but no welding - so its not the
    alternator, I think its the RPM - I think I need a 6 or 7 inch pulley
    on my motor

    the funny thing is the motor is not even straining - I dont think
    there is any load on the motor, and from what I hear it should
    almost stall my 6hp motor

  9. #9
    Low Bitrate mjd932's Avatar
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    http://oak.cats.ohiou.edu/~weinfurt/gaswelder.html

    From all the projects I looked up they only used one alternator. This one here uses a chrysler alternator (no buiilt in regulator like the gm ones). Maybe going with that larger pulley will speed up the belt enough to get you those 100 amps.
    '03 Acura 3.2TL Type S
    '04 Buick Rainier, factory nav
    '99 Honda Shadow 1100

    -8" Lilliput TS, laptop, (too) large inverter, and I'm nowhere near putting them anywhere.

    For Sale!

  10. #10
    Variable Bitrate will1384's Avatar
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    Quote Originally Posted by mjd932
    http://oak.cats.ohiou.edu/~weinfurt/gaswelder.html

    From all the projects I looked up they only used one alternator. This one here uses a chrysler alternator (no buiilt in regulator like the gm ones). Maybe going with that larger pulley will speed up the belt enough to get you those 100 amps.
    I got the alternators wired to do different things - and a switch for each
    to turn the field off, only one welds, but yea its got to be RPM

    I am going to rip the diodes out of the welding alternator
    and replace with 600v 40amp stud mount diodes on a external
    heatsinks

    should be a monster
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