That black left after electrolosis is magnetite which forms during rust electrolysis on the exposed metal surfaces after their rust has been dislodged. It can also form at submerged locations on the cathode embrittled from the hydrogen gas production as well.
Hello Daniel I just picked up my first steam tractor today. This is brand new for me and I’m wondering if I can correspond with you to help me get moving in the right direction with this restoration project Thank you Phil
Vinegar acts to conduct electricity between dissimilar metals. NB. Brass contains zinc and copper and is wrecked by electrolysis as the zinc is eaten away.
@@Daniels_Projects it's a big problem in brass musical instruments like saxophones. The moisture getting in there turns the instrument into a battery, the zinc dissolves out and the bare copper oxidises to red copper oxide. Net result is corrosion, generally known as red rot. It's a slow reaction, but doesn't even need vinegar. Vinegar will accelerate it. Pure water is a poor conductor. Most of the electric current passed by water is actually due to impurities in it. Easy to show - use a meter to measure the resistance of distilled/deionised water. Then add salt or vinegar and repeat. Now add two dissimilar metals and you have a battery,
@@kevgermany Far out, I know on larger steam engines (2 1/2"+ gauge, 60+psi kind of thing) if you use brass steam fittings they get eaten away over time, or very quickly if they leak steam (oxygen and steam must be a bad mix). As you say, the zinc gets eaten away, I've seen photos of brass steam fittings looking like aero chocolate! Mamods and the like are considered safe to use brass for the boilers/fittings as they are under 30?psi or 125°C (don't quote me on the EXACT numbers). The problem must still be there, but much less under these limits. Do you do anything to prevent corrosion in instruments?
@@Daniels_Projects instruments - best thing is to dry them after playing, but many players just chuck them in the case. Takes time for the problems to set in. And there are always good reasons to just put in the case - rush to get home/go to the bar....
Oh no, i was just getting into this series!
Excellent! These things take lots of time, care and attention 😊
Any updates on a part 3? Just got a TE1A for Christmas and these videos have been very informative
That black left after electrolosis is magnetite which forms during rust electrolysis on the exposed metal surfaces after their rust has been dislodged. It can also form at submerged locations on the cathode embrittled from the hydrogen gas production as well.
i'm assuming you finished this project, cant find anymore vids, i just want to know what you used to re attach the smoke stack
J-B weld works well
Hello Daniel
I just picked up my first steam tractor today. This is brand new for me and I’m wondering if I can correspond with you to help me get moving in the right direction with this restoration project
Thank you
Phil
Stripping the paint is the part I hate the most !
Really nice! Do you know when the next episode will be out?
Should be May, not too much more to do then it's editing. Thanks for watching!
Thanks for letting me know.
Vinegar acts to conduct electricity between dissimilar metals. NB. Brass contains zinc and copper and is wrecked by electrolysis as the zinc is eaten away.
I didn't know Vinegar ate the zinc, that's definitely something to keep in mind!
@@Daniels_Projects it's a big problem in brass musical instruments like saxophones. The moisture getting in there turns the instrument into a battery, the zinc dissolves out and the bare copper oxidises to red copper oxide. Net result is corrosion, generally known as red rot. It's a slow reaction, but doesn't even need vinegar. Vinegar will accelerate it. Pure water is a poor conductor. Most of the electric current passed by water is actually due to impurities in it. Easy to show - use a meter to measure the resistance of distilled/deionised water. Then add salt or vinegar and repeat. Now add two dissimilar metals and you have a battery,
@@kevgermany Far out, I know on larger steam engines (2 1/2"+ gauge, 60+psi kind of thing) if you use brass steam fittings they get eaten away over time, or very quickly if they leak steam (oxygen and steam must be a bad mix). As you say, the zinc gets eaten away, I've seen photos of brass steam fittings looking like aero chocolate! Mamods and the like are considered safe to use brass for the boilers/fittings as they are under 30?psi or 125°C (don't quote me on the EXACT numbers). The problem must still be there, but much less under these limits. Do you do anything to prevent corrosion in instruments?
@@Daniels_Projects instruments - best thing is to dry them after playing, but many players just chuck them in the case. Takes time for the problems to set in. And there are always good reasons to just put in the case - rush to get home/go to the bar....