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9 votes

How can I remove very stuck headset spacers (alu/carbon)

I went ahead with the rotary tool (Dremel) and general cutting disc. I cut two grooves side by side in the top spacer and prized one of them open with a flat screwdriver. Once the aluminium is thin ...
Swifty's user avatar
  • 12.8k
8 votes

Used wheels - corrosion or dried rim tape adhesive?

Thats just the adhesive from the old rim tape. Get a cloth and some rubbing alcohol and rub away, and it should look brand new.
Batman's user avatar
  • 46.3k
6 votes
Accepted

How to handle corrosion on brake pads screws on Shimano road bike disk brakes?

You can use the cotter pins from a pad like B05S to replace the screws completely. You may be able to drill out the snapped one and leave a hole that can take the pin. If you suspect the other one ...
Nathan Knutson's user avatar
6 votes
Accepted

Can I use titanium axle bolts on a steel frame?

Presumably you're talking about a Profile or one of the other BMX hubs with ti hop-up bolts available. Yes, there is no issue. Were a bolt loose and able to rub dynamically against the frame, they ...
Nathan Knutson's user avatar
6 votes

Aluminum seatpost stuck to a steel frame

Eventually got an aluminium seat-post out of an old steel Peugeot road-bike frame. It had been in for a couple of decades, never moved and was completely 'welded' in place. Tried penetrating oil, ...
Tim's user avatar
  • 61
6 votes
Accepted

How can I remove very stuck headset spacers (alu/carbon)

Based on Swifty's suggestion, I will make this a formal answer. In summary, I would (carefully!) use a high-speed rotary cutter to deeply incise the spacers and pry them open. Note that it's probably ...
DavidW's user avatar
  • 5,202
4 votes
Accepted

2014 vs 6061 vs 7075 aluminium components

Aluminum alloy 2014 is often used in the aircraft industry for structural support beams and the auto industry for truck frames. See metallurgy reference. It outta be just fine for a chainring. ...
Jeff's user avatar
  • 10.8k
3 votes

Why have my crank arms started corroding?

Why have my crank arms started corroding? In the content of the post concern about corrosion between the pedal and crank is discussed. Summary: The crank arm has been abraded allowing the aluminum to ...
David D's user avatar
  • 21.9k
3 votes

2014 vs 6061 vs 7075 aluminium components

There is no real corrosion resistance difference among the three . 7 year atmospheric exposure ( Kure Beach NC) shows slightly less weight loss for 6061; BUT , because it is difficult to measure ...
blacksmith37's user avatar
3 votes
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Aluminium "white rust" on roadbike. How bad is my situation?

It’s not bad, it’s cosmetic only. It’s just surface corrosion that’s got under the clear coat. Do you live in area where salt is used on the roads? Perhaps the previous owner was not good about ...
Argenti Apparatus's user avatar
3 votes

Is this aluminum "rust" in my frame?

Looks like filiform corrosion to me, which is a typical form of corrosion found on lacquered aluminium (and other metals). In my opinion, the scratches are too organic looking to be just scrachtes (...
Anonymous's user avatar
3 votes

Aluminum seatpost stuck to a steel frame

The caustic soda works well, but if you cut off the seatpost and put a cork in it,you can pour the solution in from the BB shell and it's less messy
Steve Kennedy's user avatar
3 votes

Aluminum seatpost stuck to a steel frame

What worker for me was acetylene blow torch and heating the seat tube not the seat post. It will damage the paint and you really need to be careful to not overheat it. Go slow and steady move it ...
brai n ya's user avatar
2 votes

Aluminum seatpost stuck to a steel frame

Removing a stuck seat post takes finesse, it is like dealing with a broken off stud. you need to go slow and be careful or you will make it worse. Mechanical removal (I have done this successfully): ...
Lars Tomasson's user avatar
2 votes

Aluminum seatpost stuck to a steel frame

The last stuck seatpost I removed was also the worse I'd ever had. I kept the frame inverted and filled the seat tube from the bottom bracket with Kroil, to a level above the post. I checked it at ...
Stephen Barner's user avatar
2 votes

Aluminum seatpost stuck to a steel frame

I worked on an aluminum seat post in a steel frame for several weeks. With all hope gone, I took it to my local repair man who had it off in less than ten minutes BUT he will not tell me how he did ...
Dennis wells's user avatar
2 votes

How can I remove very stuck headset spacers (alu/carbon)

Try penetrating oil or silicone spray (I might try silicone spray first before penetrating oil) spray. Spray liberally and let it soak in for 30-60 min. Get a pair of channel locks - https://amzn.to/...
Tude Productions's user avatar
2 votes
Accepted

Rescue corroded alloy nipples on wheel spokes, perhaps using chemicals?

In many other cases I'd apply heat (to the spoke) but I'd be wary of doing that here, because you could end up tempering part of the spoke, while it's still under stress. If you're unlucky that would ...
Chris H's user avatar
  • 60.3k
1 vote

Electrochemical corrosion - bolts holding axles

Edit: I've incorrectly supposed the way the galvanic corrosion between chrome moly steel and an aluminum alloy happens. I incorrectly thought both metals would be corroded, however, in galvanic ...
Jeff's user avatar
  • 10.8k
1 vote

Used wheels - corrosion or dried rim tape adhesive?

Once you clean the surface completely, rubbing alcohol, goo gone, or your favorite cleanser.. look at the surface. Smooth = adhesive or some other junk, nothing to worry about (most likely the case). ...
Jameslw3d's user avatar
1 vote

Is this aluminum "rust" in my frame?

I have seen this exact thing before on the surface of aluminium car mag wheels that were stored , covered up in a damp environment for up to 2 years.' It definitely seemed to be due to a reaction with ...
Brian's user avatar
  • 11

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