dedhed

I would be using a wheel style brush rather than a cup style to avoid chances of hitting the rim with the cup.
https://www.homedepot.com/p/Robtec-3...CS12/301770990

LeSexyFishorse

Probably sat in the elements since most bicycles are kept outside in Japan due to limited indoor space.
Meeting the powdercoat guys tom need to see how much it will cost. Im a bit hesitant do do sandblasting so I will ask them if they can do some sort of chemical rust removal or electrolysis so that way the inside will be handled as well. My thinking is that if its too expensive to have it powdercoated or if they cant do any proper de rusting then I might try to DIY it.
My research to internal anti rust solutions led me to this Anti-Corrosion product shootout! | Page 4 | Mountain Bike Reviews Forum (mtbr.com) Seems like either fluid film, corrosion x or wd40 long term corrosion inhibitor have substantially better results. Trying to get my hands on fluid film or wd40. Also asked my uncle who is a sailor what they use for their ships. If he can recommend a proven method I might try his.
For the stem I ordered some citric acid which I will mix into a solution and pour under the fork and let it sit overnight to see if that can loosen the stem. If that fails, I have ordered an impact driver and screw remover drill bit as well for worst case scenarios.
Do you think that having the cable ports done is not necessary? If so why not?
I redid the wheels again today and removed maybe 95% of the glue. Scuffed them up with sandpaper per the video, cleaned them with alcohol and left them to dry overnight. Will start the glue process tom.

Man this is super fun, but its also quite bittersweet. Half of me is like ooooohhh so thats how it works. The other half just wants it to be over with so I can ride my bike. Who would have thought you could have this kind of Love-Hate relationship with a bicycle.

James1964 

And be sure the bristles on the wire wheel brush are of a softer metal than the rim. Looking at the photos, it appears the brush wore through the "hard anodized" surface.

rickpaulos

If you apply a frame saver, wait until after the frame is powdercoated. The heat will cause any oils in the frame to run out and that will mess up the powdercoat. As far as masking goes, let the powdercoater do that. They use a heat resistant mylar tape, not any regular tapes we would use for painting. Again, the heat will melt the tape and mess up the finish.

LeSexyFishorse

Good advice. I went to a few powdercoaters today. The most reasonable guy cannot anything complex beyond simple colors for cheap. Guy said that most people use them as a base coat and then do the details themselves with spray cans. The process will cost me 15 USD for Acid Bath and anti rust chemical treatment, Primer and base powder coat. I have set a schedule for Sat next week to get the frame done. Once I get the frame back I still intend to use some anti rust on the inside just to be sure. Guess its time to learn how to spray paint my frame too
My only remaining problem now is the stuck stem. Waiting for the chemicals and tools to arrive. Hopefully it gets sorted.
Yea I tried to be super careful with hitting the rim. This is the end state of the rims after a 2nd pass using the wire brush.

Turned out pretty good I think. I scuffed it up very lightly with sandpaper per the video and applied the first coating of glue. Also inflated the tyres to let them form out and stretch.

Unca_Sam

If you're planning on adding a cable port for the drilled cable routing on the frame, you'll want a frame builder to add those before you paint...

xiaoman1 

^^^^^^

oldbobcat

About that bare metal on the lower head lug. Is that something you did with the vice-grip. Also, at this point, were you already dismantling the headset, because the crown race does not appear squarely seated in the headset cup, suggesting a bent steerer. Is this setting off alarms with anybody else?

LeSexyFishorse

The bare metal was a rusted out section that I took some soda and aluminum foil to. Dont think the steerer is bent, its prob more visual distortion from the angle I took the photo.

Last day of glue for the wheels tom then I get to reward myself with a weeks worth of rides till I have to send the frame in for powdercoat. I have flipped the frame upside down and poured some citric acid and water down the fork to see if it can do something about the rust biding the stem since penetrating oil didnt seem to work. Worst case I will have to destroy and replace the bolt or stem.

oldbobcat

Good.Good luck. Before any bare metal gets coated, I recommend checking that there will be enough metal on the top tube after the old paint and rust get the walnut-shell treatment.

Geepig

Yes, really, really consider the cable ports.

I have a folder frame I am considering them for, it is the kind of thing you will congratulate yourself for doing every time you see them.

LeSexyFishorse

So ive been going around my area to find any framebuilders that can do that for me. Seems like no one can do anything but weld it on. The only other framebuilder and also most reputable one is not taking job orders at the moment due to supply disruptions and has a long waiting list. Do you guys have any alternatives if I cannot find anyone to do it in time? Should I just cover them up until I can get them done?

Unca_Sam

The only way to do this is brazing. Waiting will be worth it. In the meantime, abate the rusting with your favorite method and stabilize the bare steel. You can use a rust converter, primer, or whatever to ****** future rust. I'd use Ospho since I already have it, but there are similar formulations available for DIY phosphatizing of steel for painting.

LeSexyFishorse

Should I continue to route the cable internally or would it just be better to cover the hole up with cut tape or something after de rusting it?

rickpaulos

Back when we rode and raced on tubular tires, we would keep old buggered rims to store the new tires on. put them on dry and inflate to 50psi or so. that will give them time to work out the creases from being folded up from shipping. Now that your rims are clean, you can put them on dry until the bike is ready, then glue/tape. Dont' forget and ride without tape/glue. Unglued tires will come off very quickly.

The only time we stretched tires was when they were too tight to get on the rim. Once on the rim and inflated they will stretch to the correct size. Every brand/model/material type is different. Inflating off the rim makes them curl around and stretches the wrong bit of the casing.

Putting them on dry will give you the practice you will need when it is time to glue them on. NO TOOLS. Only use your hands. Once you add the glue, it's mess time. You will need some proper solvent to clean you hands and the braking surfaces of the rim clean.

rickpaulos

MAPP gas and Oxygen torch would be hot enough for brazing inserts in. You might do it yourself. it's far less expensive than oxygen-acetylene gear and tanks and the gasses. I would not build an entire frame using MAPP but for cable guide inserts, it should work okay. There are a lot of auto shops that have oxy-acc kits. Most auto repair places have them to remove rusty parts quickly. Many recycle places use oxy-acc cutting torches to make stuff smaller in hurry. Ocean going ships are cut apart with oxy-acc torches. For cable guides where you run full housing, the guides aren't under any tension or pressure. sweat soldering or even epoxy glue might work. Many companies used plastic snap in guides. You usually see those on aluminum frames.

If you cover the holes up temporarily , what about paint/powder coating? You don't normally "touch up" powdercoat finishes.

LeSexyFishorse

Yeah, I missed that part. I put glue on the tires before I stretched them. I also inflated them and left them for a day or 2 without being on the rim so the base tape rolled outward one way. I finally mounted them both today and it was extremely difficult to get the last section on because they had not been stretched. Eventually got it on but made a mess of the glue, lesson learned. Always pre stretch tires. Also figured out when checking if they were straight that the rim was not true. I dont know if this is from my forceful mounting or has been untrue for a while. Am going to LBS tom morning to get them trues and the tires double checked for straightness. I hope I dont have to redo the glue job, but I will if they say its unsafe.
I was thinking of getting the powdercoat done then covering them up with a sticker or something until the framebuilder starts taking business again and I can have them done.

Is the brazing something I can learn from a youtube vid? I have no welding experience at all. You mentioned epoxy glue? Is this a viable alternative to brazing them on?

Mr. 66

Here is how I have handled rusted stuck stem, I have a friend with long jaw vice. Place the fork in the vice tighten, and now one has the stability to go at it. It can take some effort but it's worked and I've saved the stem as well.

Mr. 66

I would not bother with epoxy. You can silver braze it is not that difficult, it's also lower temperature than brass for getting a proper flow. The frame builders forum can certainly give more information than I.

LeSexyFishorse

Will try this although the hex in the nut is all but rounded out so I dont know how well it will work. I have purchased drill bits for removing stuck screws. Will try that if this fails.

Cool will look this up. Thanks!

vane171

I read about half the thread, was shuddering all the time and I have to ask, is it worth rescuing the bike, or the frame? Is there a value in that? Like does it have antique or personal value? Mind you, I like to do un-economical fixes of all kinds myself but this is pretty seriously bad condition. I take it, the bike must have spent years under open sky or what. Given you go for it, you should be equipped for that, shop and know-how wise. But I wish you good luck nonetheless.

If you will keep the rims, tubular tires are not cheap. On my old bike, I hung the tubular rims up in the attic long ago and invested in new clincher wheels precisely because of the running costs or riding tubular tires.