

Thanks for looking
Moderator: minetymenace
Thanks but no, 1-7/16" is a weird size tube and not very available in job shop quantities so I went up to 1.5".Jack Gifford wrote: ↑Sat Feb 01, 2020 5:23 am Nice work!
Is the engine's displacement increased in the same proportion as the exhaust ID area?![]()
hi madmadsundaysurvivor wrote: ↑Tue Apr 14, 2020 3:52 pm some thin-walled tubes, break next to the weld, due to vibrations
guess this is your main problem
up to 100 + Amps you do not need refrigeration in the torch, - I do not have it aider and I do welding up to 200 Amps. ( in Aluminium )madsundaysurvivor wrote: ↑Thu Apr 16, 2020 7:34 pm my instrument is old and basic, it does not have refrigeration in the torch
you may go lower in the Amp's ?
I am sorry I didn't see your post.madsundaysurvivor wrote: ↑Tue Apr 21, 2020 7:07 pm Yes, normally I work with few amps, but I get high cords instead of flatter.
I remember my teacher telling me more amps and faster, but for this I have to be more skillful....![]()
FranktheWelder wrote: ↑Thu Apr 23, 2020 5:30 pm . I weld very cold and do one pass. Keep the arc very short, the weld should not be grey or black upon completion. For mild steel and 4130, I use a 70 series wire unless the part is 4130 material and will be stress relieved through heat treatment. The material must be very clean and no moving air in the room. Begin gas flow before arc and continue gas (argon only) after for a few seconds. While welding prevent filler from getting hot but try to keep it in gas cloud. very difficult in practice.