Phoenix

[Pondo]

jeez and I thought bmx and mtb were something "new". Guess not.

I think off road riding and racing have been around since bicycles were invented. Specific disciplines and fads seem to come and go. It's all great fun!

 

[us56456712]

My last post didn’t show up. It looked like it posted I saw it, now it’s gone. Took me 1/2 hour to post it as it would vanish before I could post. Then I had to do it again, three times. Sorry it’s not worth it.

 

[us56456712]

I’ll try and post this for the 4th time, see if it gets shown. 1 inch bars, 7/8 brake lever clamp. Flatten both sides to make a one inch radius, squeeze the ends together with vice grips and a bench vice and use the shaft of a medium sized Phillips Head Screwdriver to align the bolt holes, sorta. Put the clamp bolt in and squeeze it t with vice grips. Not as easy as it sounds.

 

[us56456712]

I’m attempting to vibrate off the glass like brazing flux. Hot water and acid doesn’t touch it. I used Shoo Goo and duct tape to secure the sander and put my rust soak next to it when the sander vibrated itself off. The rust soak is also vibrating like crazy. If it doesn’t work on the flux I bet it will work on rust and maybe for rust stuck bike parts. It’s powerful enough that the floor in the next room vibrates enough that you feel it in your feet. Home brew subsonic vibrating slag and rust remover. I’m sure it’s not a continuous motor so I run it in 20 minute stretches to allow cooling betwiin cycles.

 

[ingola]

I’m attempting to vibrate off the glass like brazing flux. Hot water and acid doesn’t touch it. I used Shoo Goo and duct tape to secure the sander and put my rust soak next to it when the sander vibrated itself off. The rust soak is also vibrating like crazy. If it doesn’t work on the flux I bet it will work on rust and maybe for rust stuck bike parts. It’s powerful enough that the floor in the next room vibrates enough that you feel it in your feet. Home brew subsonic vibrating slag and rust remover. I’m sure it’s not a continuous motor so I run it in 20 minute stretches to allow cooling betwiin cycles.View attachment 251852View attachment 251853

You sir are mad man

 

[us56456712]

Phosphoric acid rust buster soak is started. 20/1 dilution. It’s bubbling slowly. I can use the solution again, all I have to do is decant It into gallon jugs.

 

[us56456712]

Oxalic acid and citric acid makes permanent green non removable rust for me. It might be chromium in the steel and minerals in my well water causing a witches brew.

 

[Scovilleater]

Oxalic acid and citric acid makes permanent green non removable rust for me

...um, really? Is there any chance that you could take a picture? In my head I'm seeing an almost phosphorus lime green. If that is the case... I owe you a debt of gratitude at the very least.
I had been kicking around the idea of stripping and doing a full surface rust for the frame and fork. (Followed by a complete BLO bath.
Now though.... It's like Saul on the road to Damascus. I've just been hit in the head with a stick, and now I can smell the colors!
Oh PLEASE let this be real!

 

[us56456712]

...um, really? Is there any chance that you could take a picture? In my head I'm seeing an almost phosphorus lime green. If that is the case... I owe you a debt of gratitude at the very least.
I had been kicking around the idea of stripping and doing a full surface rust for the frame and fork. (Followed by a complete BLO bath.
Now though.... It's like Saul on the road to Damascus. I've just been hit in the head with a stick, and now I can smell the colors!
Oh PLEASE let this be real!

Yes, that’s the color. This occurred several times about 8 years ago so no pictures. Others don’t seem to have this problem. Some acids give me a yellow, unremovable rust. It’s been years ago so I don’t remember what acid caused the yellow. I tried several times and always got the yellow or green rust. It won’t all come off in nooks and crannies where a 10,000 rpm wire brush won’t reach. Someone on this forum said I was using too high of a concentration. I tried a lot less and it just took a long time and I still had unremovable green rust but it was lighter. Vinegar wouldn’t remove the green or yellow. The cheapest way to remove rust is to use white vinegar. You can get a gallon of 45% on line and dilute it with 9 gallons of water. Phosphoric acid is more expensive but the best. It’s used for rust removal on a commercial scale. Machinery is dipped in a vat of it. It forms a rust resistant coating of iron Phosphate. Iron phosphate will keep the bike parts from rusting as it dries. It will shortly form surface rust. To keep it from rusting I then put on Ospho. It will stay for weeks without rusting, time enough for you to add paint.
Jet Sled, PH Down, ballast and enough water to cover the parts.

After dip.

Rust is gone, even in the deepest places.

After phosphoric acid.

 

[Scovilleater]

Thank you! I'm definitely going to be researching now. Living in Seattle, it seemed appropriate to have a completely rusted frame and fork. I never, and I mean NEVER thought about colored rust. You are a gentleman and a scholar. You have broadened my horizons, therefore I grant you one favor. Absolutely exchangeable for goods or services.
Again, thank you!!!

 

[us56456712]

I’m going to call my forge brazing experiment a semi success. I cleaned up the flux so I could see the result. The brass melted into the joint enough. Looks like carp but it did the job.

 

[us56456712]

Phosphoric acid removes paint that had long time exposure to moisture. Areas that were protected from moisture are still there. Phosphoric acid won’t remove good paint.

 

[us56456712]

Spot sand blasting, filing and Dremel grinding after lead and JB Weld filler. Still needs more.

 

[us56456712]

 

[us56456712]

Fork springs are shot. I welded up some mounts and used a Wizzer spring instead of the originals.

 

[us56456712]

 

[us56456712]

 

[ifitsfreeitsforme]

oo. shiny.

 

[One-eyed Sailor]

Oxalic acid and citric acid makes permanent green non removable rust for me. It might be chromium in the steel and minerals in my well water causing a witches brew.

I learned this one the hard way.