John B. Slocomb <
johnbs...@geemail.com> writes:
> If the metal rusted than simply removing the rust is
> purely cosmetic and the metal will rust again if not
> protected in some manner - paint, oil,
> plating, other.
Oil I do have and I've noticed that one drop is often
enough for a small mechanism, so I'll do that in the
future when I remove rust.
Removing rust might be cosmetic (which isn't anything
to frown upon) but isn't it also functional as if
mechanical components get rusty they get more
difficult to interact with (e.g., screw heads, spoke
nipples, and so on)?
It is also more difficult to spot if something is
damaged if it is all rusty.
> In theory no. The chain wraps around the chain wheel
> and, again theoretically, the pressure on all the
> teeth engaged by the chain exert the same pressure
> on the chain. You actually apply pressure to the
> crank throughout about 1/4th to 1/3rd of
> the revolution.
Yeah, that's what I meant (?). But even so, the chain
distributes this evenly, you say. If so,
that's brilliant!
By the way, I don't know how I thought because you
can't do anything about this just because the chain is
gone, because the crank is attached to the
chain wheel. So if you are to do this, you are to do
this not every time you replace the chain, but every
time you open the crank! And tho there are many holes
around the chain wheel, the arm that holds the crank
seems to but locked by wielding (?) so there is no nut
or anything that can be easily removed so the crank
can be changed into another hole!
> if the spoke had a very gentle bend it probably
> isn't necessary to straighten it but if it is
> a sharp kink it is better to straighten it, or maybe
> not use it if it is very badly bent.
When it is badly bent I discard the spoke, for sure.
But by now I have many dislocated spokes and they are
all perhaps not sharply bent but they are far from
straight. It looks like a bouquet of
mechanical flowers!
I tried to group them together tightly with 3-4
strings in the hope of this getting the spokes in the
middle of the group straight if they were like that
for some time. But honestly I don't think that will
happen as I have to apply considerable force to get
even a single one straight. Perhaps a construction
with two parallel poles would do it? But then you
might as well put them into rims and be done with it.
The reason I ask is because I get the impression that
because they retain their "bentness" so stubbornly,
stretching them to fit in a rim is perhaps an illusion
and when you start using the bike they will somehow
twist their way back to an improper constitution?