I have the same POS it's now a giant brick. Bought some hydraulic crimpers and some copper tubbing to fix mine.. Just have not got around to fixing it.. I might step it up as my new farhad capacitor spot weld just gave up after 2 battery builds.. Tired of spending money on crap..
Assuming the first wrap in the transformer puts out let's say 3volts 650amps I wonder then does the second added wrap in the transformer also get 3volts 650amps. And are they in parallel so your final bursts are only still 3 volts but like 1200amps? Would be nice to see you test it with a multimeter. I've got a sunkko 709a on the way I'm already thinking of adding a fan myself. I couldn't see spending another 100 for the ad it just has a fan and it has auto weld mode. Or is it raising the voltage ?
The iron core can not transfer more magnetic power ! Ok may be a little ... You habe not 2 coils with 3 Volt and each 650 Amp = V * Amp = Watt = 3 V * 650 Amp = 1950 Watt each coil ! You still get 1950 Watt over the iron core ! (and the primary input copper coil ) ok may be a litte more but not worth .. You get 3 Volt and each 325 Amp = with you 2 coils 3 Volt 325 Amp 2 coils = 1950 Watt But you get lower copper resistance (you have more copper diameter !) That is very good ! And you may be get little more Watt output, because your lose less energy in your new low voltage coil. The original low voltage copper coil have more resistance (because of the smaler diameter). Dont lose thes extra Amp when cut cut your new wire. It is not easy to build very low resistance connections. Best are less connections e.g. only the connetor to the spot welder tips may be to the transformer ... But why not use the new AWG 4 thru the transformer dircet to the spot welder tips ? One cable only = no resistance in extra connection because there a no extra connections.
sorry wore english. Not my primary language ! By the way all at your own risk ! It may be not allowed in your country to modify electric machines ! Ask you local electrician. I dont know the laws in your country.
Buy essentially doubling the gauge wire, your essentially just increasing the current carrying potential, but probably not increasing the actual current output by double. you wouldvr been better off increasing the output voltage by using a longer wire (slightly larger gauge or possibly even same gauge) to replace the existing one and increasing the turns around the transformer by 1 or maybe 2 turns(2 turns might be excessive). this way u have the same specified diameter wire connecting to the welding arms, you will in turn increase the actual current by increasing the voltage because the resistance of the short circuit created by the welding tabs is essencially the same: Volts/Resistance=Current. Just be aware that your primary winding is probably not designed for the increased current so it will in fact heat up faster... As long as you dont weld back to back really fast, should be fine...
Literally thank you soo much, i have this exact welder and i need to make extension leads to weld up this battery pack, you are a fkn legend
Very cool. I didn't know you had videos. Cool
I have the same POS it's now a giant brick. Bought some hydraulic crimpers and some copper tubbing to fix mine.. Just have not got around to fixing it.. I might step it up as my new farhad capacitor spot weld just gave up after 2 battery builds.. Tired of spending money on crap..
Transformer voltage and current secondary
Assuming the first wrap in the transformer puts out let's say 3volts 650amps I wonder then does the second added wrap in the transformer also get 3volts 650amps. And are they in parallel so your final bursts are only still 3 volts but like 1200amps? Would be nice to see you test it with a multimeter. I've got a sunkko 709a on the way I'm already thinking of adding a fan myself. I couldn't see spending another 100 for the ad it just has a fan and it has auto weld mode. Or is it raising the voltage ?
The iron core can not transfer more magnetic power ! Ok may be a little ...
You habe not 2 coils with 3 Volt and each 650 Amp = V * Amp = Watt = 3 V * 650 Amp = 1950 Watt each coil !
You still get 1950 Watt over the iron core ! (and the primary input copper coil ) ok may be a litte more but not worth ..
You get 3 Volt and each 325 Amp = with you 2 coils 3 Volt 325 Amp 2 coils = 1950 Watt
But you get lower copper resistance (you have more copper diameter !)
That is very good !
And you may be get little more Watt output, because your lose less energy in your new low voltage coil.
The original low voltage copper coil have more resistance (because of the smaler diameter).
Dont lose thes extra Amp when cut cut your new wire.
It is not easy to build very low resistance connections.
Best are less connections
e.g. only the connetor to the spot welder tips
may be to the transformer ...
But why not use the new AWG 4 thru the transformer dircet to the spot welder tips ?
One cable only = no resistance in extra connection because there a no extra connections.
sorry wore english. Not my primary language !
By the way all at your own risk !
It may be not allowed in your country to modify electric machines !
Ask you local electrician.
I dont know the laws in your country.
What it turn out like for u? I'm getting one and gonna 240v wire it
@@jasperhart1188 the sunkko was really underpowered I ended up getting a super capacitor spot welder. Much better.
Can't transformers hold ⚡ even after being shut off
Your thinking of capacitors
Buy essentially doubling the gauge wire, your essentially just increasing the current carrying potential, but probably not increasing the actual current output by double. you wouldvr been better off increasing the output voltage by using a longer wire (slightly larger gauge or possibly even same gauge) to replace the existing one and increasing the turns around the transformer by 1 or maybe 2 turns(2 turns might be excessive). this way u have the same specified diameter wire connecting to the welding arms, you will in turn increase the actual current by increasing the voltage because the resistance of the short circuit created by the welding tabs is essencially the same: Volts/Resistance=Current. Just be aware that your primary winding is probably not designed for the increased current so it will in fact heat up faster... As long as you dont weld back to back really fast, should be fine...