183 reputation
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location Denmark
age
visits member for 1 year, 9 months
seen Sep 8 at 12:53

Computer science student at Aarhus University. Likes Python.


Sep
24
awarded  Autobiographer
Aug
26
awarded  Notable Question
Aug
12
awarded  Teacher
Aug
12
answered How do I remove rust from my seat tube?
Aug
12
comment Removing Seat Post rusted into downtube
Another issue with the inside flooding approach is that I would need to spray enough WD40 (or ammonium or whatever I am using) into the frame to know that the seatpost is completely full and the agent is up and above the point where the seatpost ends. I guess that could be quite a lot of WD40. When turning the bike back I would need to carefully pour the substance into a carton or smth and discard it in a environmentally safe way. Just spraying the upper part will not require much spray. But of course, maybe the inside-attack is more likely to succeed.
Aug
12
comment Removing Seat Post rusted into downtube
@Chris: Flooding the inside only lets it work from one end. Obviously it is possible to attack from both ends, but flooding the inside only works from one end. Don't you agree?
Aug
9
comment How to remove completely stuck saddle post from frame
@jimirings: While I generally agree with the StackExchange concept of weeding the content to ensure high quality and make it easier to navigate, I often find myself in a situations where contributing with my info/experience just requires too much work, and right now is one of those cases :( Adding a new question with answer seems/feels very constructed and forced, but I will try.
Aug
9
awarded  Editor
Aug
9
revised How to remove completely stuck saddle post from frame
added my solution and lessons made
Aug
8
awarded  Commentator
Aug
8
comment Removing Seat Post rusted into downtube
Remember that if you cut of the part of the post which is outside the frame, and then fail in removing the rest with a hacksaw blade, then you are pretty stuck, and I don't see any solution but to discard the entire frame.
Aug
8
comment Removing Seat Post rusted into downtube
If the seat posts reaches far into the frame then I imagine that it is quite difficult to saw it with a hacksaw blade. If you did not insert the post yourself and dont know the total length of the seatpost you don't know how deep it goes. Perhaps this can be tested by feeling for the bottom of the seatpost by putting a long thin tool with a sort of hook in the end into the inside of the seatpost.
Aug
8
comment Removing Seat Post rusted into downtube
Why is it better turning the frame upside down and applying it from that side? Isn't it just as fine to apply it from the outside? Obviously doing both is the optimal, but you just suggest doing it from the difficult angle, and not from the easy angle, and I can't see why :)
Aug
8
comment Removing Seat Post rusted into downtube
How do you know that the seatpost is aluminium alloy? Are all seatposts of aluminium alloy?
Aug
8
comment How to remove completely stuck saddle post from frame
Now I solved my problem, and I would really like to contribute with the result, but I can't since the question is (partly) a duplicate :(
Aug
8
asked How to remove completely stuck saddle post from frame
Jul
30
comment I want to weld or braze the pedal to the crank arm, but what metals are they?
@Rider_X: I don't think I have ever seen a bike with washers on the pedals. Maybe it is only used on high end bikes?
Jul
26
comment I want to weld or braze the pedal to the crank arm, but what metals are they?
Very interesting. I always assumed the threading was "the other way" to prevent it from unscrewing over time. In my experience it takes so much force to unscrew a pedal, sometimes a vice is needed, but I guess that is different for new and well kept bikes. I hope fixie owners are aware of this.
Jul
25
comment I want to weld or braze the pedal to the crank arm, but what metals are they?
Assuming it is is steel and aluminium. It is not possible to weld, but it is possible to braze. However, that is not an easy process either, so I will surrender and find a replacement. Steel-aluminium brazing technique is described in (interesting reading): weldingweb.com/…
Jul
25
comment I want to weld or braze the pedal to the crank arm, but what metals are they?
After some googling, it seems that many people have had bad experiences with epoxy, when trying to fix my problem. There is no grip in the threading here, which makes it even less likely to succeed. So I will not try epoxy.