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keesan
Bike maintenance Mark Unseen   Jul 7 02:39 UTC 2000

What do you do to maintain your bike, and how often?  Don't include patching
tires or changing broken brake cables, but the routine stuff to keep it
running properly - cleaning, oiling, adjusting, what parts, using what, how
do you know it needs doing?
74 responses total.
slynne
response 1 of 74: Mark Unseen   Jul 7 04:03 UTC 2000

well. I am not the person to ask. I just wore out my second set of tires and
my car only has 55,000 miles on it. 
scott
response 2 of 74: Mark Unseen   Jul 7 16:57 UTC 2000

Um, I wipe it off now and then.  I don't really ride so much I need a
schedule, but I do clean the chain off now and then, and lube it (wax based
stuff) if it seems like it wants it.  Adjustments as needed, and I usually
check stuff over in the spring.  
keesan
response 3 of 74: Mark Unseen   Jul 8 20:17 UTC 2000

Jim just gave my bike a real overhaul.  I had been complaining of grinding
or scraping noises and wondered if the bearings or raceway that had been in
need of replacing ten years ago might be more in need now.  Turns out it was
everything but that.  He thinks the main problem was the chain, which had
stretched 1/4" overall (1/2?").  Each link was a bit too long and was not
going over the sprockets correctly, so he replaced it with a chain that was
not quite as worn, after oiling the chain by dunking it into used motor oil,
and bending the rusted parts so they would move, and cutting off two links
to shorten it to fit my derailleur.
        He also scraped a lot of dirt off all the sprockets and the derailleur
and other parts that did not matter but looked dirty.  Turned the bike on its
side and brushed off the dirt and dripped some gear oil into the pedals, which
do not have sealed bearings.  The bearings in the part between the pedals felt
okay to him so he did not take that apart this time.
        I replaced a very worn tire a couple of years ago, along with a tube
that had too many patches.  The new tube (from a store going out of business)
had a defective valve so we went back to the old one.
        Oiled the gear change mechanism so it would change gears on the first
try again.
        What I think made the biggest difference was to oil the rear brake
mechanism so that the brake pad is no longer dragging on the wheel.  Jim
insists the chain made the biggest difference.  I can now bike in two gears
higher and get up hills without walking.  Seems like all the moving parts
needed something done to them.  The wheels did not come untrued in the past
ten years (since we built them ourselves).
        We don't normally clean our bikes at all and they keep working anyway.
Jim is thinking of putting together something with an internal 5-speed hub
that will not get dirty, but it is more work to pedal.  He said the sprockets
are showing wear and will eventually need replacing, at least the ones used
most often (around town).  My rear wheel reflector mysteriously disappeared.
This is not a lot of work done on the bike - maybe 2 hours every five years,
and we bike about 5 miles/day not counting special trips, from March through
December.  Tomorrow we are going to a friend's farm to pick raspberries and
my bike was simply getting too hard to pedal.
happyboy
response 4 of 74: Mark Unseen   Jul 8 20:21 UTC 2000









mdw
response 5 of 74: Mark Unseen   Jul 10 05:23 UTC 2000

I certainly don't ride my bike nearly as much as Keesan & Jim do theirs.
If the weather is good, and I get up in time, and La Fiesta is open,
I'll often bike there for lunch or dinner - that's at most 2 miles from
home.  The La Fiesta folks have been on vacation, so I haven't done any
riding in the past week.

The most frequent maintenace I need to do seems so be pumping up the
tires, which I do when I notice it's getting harder to pedal and the
tires look flat.  I probably ought to check them more often and be
generally more scientific about it all.  I've lubricated the chain a few
times - basically, when it looks dry.  It's important to keep it
lubricated - besides making it easier to pedal, it also discourages
corrosion, and wear.  Chain "stretch" is a symptom of wear - it
indicates the pivots have worn enough to permit the chain to elongate.
One of the reasons I don't like to ride in the rain is that exposes the
bicycle to a lot more corrosion/rust, which I'd really rather avoid.
Unfortunately I got a small leak in a water pipe right over the bike
over the last winter, so I still managed to get some rust I hadn't
expected.  I think my wheels are going a bit out of true because of
going over bumps; this causes uneven braking, which annoys me.  I
fiddled with the sprockets once to try to fix this, but I think I'll
need to do it again soon.  With the 3 speed I rode as a teenager, I
remember having to do the same thing every year or so.  The plastic
pedals on my current bike are definitely wearing out (it's not so much
wear as poor design, cracks that, well, ripped through and so now I have
twisted bits - it's as if something chewed on them then gave it up as a
bad job.) The bearings for the pedals are also going - apparently they
chintzed a bit on the balls so as it wore, the balls have come lose in
the race and rattle as I pedal.  This may take many years to actually
wear out however, so I may well get tired of the bike first.  The
shifter mechanism is something else that definitely seems to go out of
adjustment with time and getting banged against things - I haven't
figured out what all the parameters are here yet.  I think the front
shifter is more liable to going out of adjustment however.  I probably
should lubricate the cables sometime.  Chains and cables are both things
that are hard to lubricate too often.
n8nxf
response 6 of 74: Mark Unseen   Jul 10 11:46 UTC 2000

When I did a lot of riding, I'd repack all the bearings every winter.  I'd
also touch up any rust spots and the like.  I check tire pressure before every
ride on a road bike with skinny tires.  Less often on my fat tired bikes. 
For the least rolling resistance, I think the tire psi should be about 10%
less than that of the surface that you are riding on.  (1 or 2 psi for sand
and a lot more for paved roads ;-)

Chains should be replace when they stretch more than 1/8" over a 12" length.
Since bicycle chains have a 1/2" pitch, 24 links will measure out to 12"
exactly when new.  When 24 links measure 12-1/8" it's time to replace the
chain.  Failure to do so will cause premature wear on all of the sprockets
that the chain comes in contact with.
keesan
response 7 of 74: Mark Unseen   Jul 12 18:27 UTC 2000

I think Jim measured 18" and was over about 1/4"
We have a little gadget for truing wheels that you use to shorten or lengthen
individual spokes.  It does not do much for rims damaged by going over curbs.
Jim says lubrication on chains just attracts more dirt.  But he lubricated
my 'new' chain anyway because it was already rusted.  Marcus, if you want to
bike over we can get you replacement pedals and maybe help with adjusting
other things.  Jim enjoys helping people help themselves and we have a yardful
of bikes that should be parted out - take some parts!
It is a nice ride ride from Ypsi through Gallup Park along the river, which
I am not far from (just north of Main St.).
scott
response 8 of 74: Mark Unseen   Jul 12 20:54 UTC 2000

Chains can be lubricated with paraffin wax instead of oil, but then you don't
the same rust protection as oil.

The high-tech bike stores carry products like Boeshield and White Lightning,
which are easy-to -apply wax products.  Boeshield was developed by Boeing for
lube and rust protection, and gets pretty good reviews.
keesan
response 9 of 74: Mark Unseen   Jul 12 23:32 UTC 2000

But does it pick up dirt and hold it?
My newly oiled (with used oil) bike is way easier to pedal now, but I still
think the main reason is that the brake is no longer always dragging.
gull
response 10 of 74: Mark Unseen   Jul 13 03:08 UTC 2000

The rims aren't damaged on mine, they just don't 'track' straight anymore. 
I'm pretty sure they can be brought back into line by adjusting the spokes,
but there's an art to that and I'm not about to try it myself.
scg
response 11 of 74: Mark Unseen   Jul 13 07:18 UTC 2000

Yeah, you don't want to true wheels if you don't know what you're doing, or
at least not on wheels you care about.  The "art" to it is to tighten or
losten the spokes very gradually, a quarter or half turn at a time (I forget
which; it's been several years), and to loosen one side when you tighten the
other side.  It takes a bit of practice, but there was a time when I was able
to do a pretty good job of it.  I'm not sure how comfortable I'd be doing it
now.

I tried wheel building once too, but managed to destroy the rim, and then took
the hub to Cycle Cellar and had them build me a wheel around it.
mdw
response 12 of 74: Mark Unseen   Jul 13 09:16 UTC 2000

Next time I bike into A^2, I may look at the keesan pedal collection.

With the rims, I don't care so much about the outer circumference of the
tire, but whether the rim is warped or not - if it's warped, it brakes
funny, and it may be harder or impossible to adjust the brakes so they
don't rub at some point in the revolution.  Yup, I've done the
quater-turn at a time business, although I found that I wasn't as good
remembering which way I had done it on which spokes as I would have
liked.  Maybe it was the fancy spoke wrench - I don't remember that
being quite so puzzling with a crescent wrench on the 3-speed.
scott
response 13 of 74: Mark Unseen   Jul 13 11:30 UTC 2000

(The point to wax-based lubes is that dirt doesn't stick to it)
keesan
response 14 of 74: Mark Unseen   Jul 13 12:52 UTC 2000

Thanks for the tip about the wax.
I learned to true my wheels with a cheap little tool before I met Jim.  It
just takes patience.  And I learned to build wheels, easy but time consuming.
If I can do it, anyone can do it.  Jim can probably also deal with a slightly
warped rim, and if not, we have lots more wheels, 26" 3-speed, racing, or
mountain bike variety (not the hybrids, we had to build those).  THe spoke
wrench I have is a little circle of metal with various size openings for
different size spokes.  Give us a day's notice so that the tools will be in
the same place as the parts collection.
gull
response 15 of 74: Mark Unseen   Jul 13 18:36 UTC 2000

It's just that there are a lot of subtle things to get right; for example,
you want to keep the rim centered over the hub as you do it, unless it's a
back wheel, in which case you want to "dish" it on the side the sprockets
are on.  To me, it's just something I'd rather have an expert do for me;
it'll be much quicker, and the results will probably be better.  I don't
spend enough time working on my bike to want to learn the specialized skill
involved in wheel truing.  I'm comfortable adjusting brakes and dereilleurs
(sp?), though, and simple things like that.
scott
response 16 of 74: Mark Unseen   Jul 13 19:07 UTC 2000

I used to true my own wheels, and even hammer out rim dents.  Then I figured
out I wasn't putting enough air in the tires to bounce over curbs and potholes
the way I was doing.  

Truing wheels that aren't badly warped isn't that hard.  It takes a lot of
patience, and you want to spread your work out a bit instead of trying to
crank just one or two spokes down.  Twanging the spokes to hear the pitch (and
therefore the tension) is a useful thing to do periodically.  Basically loosen
some spokes on one side and tighten on the other, not more than a 1/2 turn,
then go for a ride to let it settle a bit.  Repeat until you are happier.
rcurl
response 17 of 74: Mark Unseen   Jul 13 19:46 UTC 2000

When I was a kid and really abused my bikes I was not hesitant to
adjust spoke tensions, especially as they loosened up so fast. Now
that I have not ridden serously for some time, I would have no idea how to
get it "tuned" correctly. It may be, of course, that I really didn't, when
I was a kid!
keesan
response 18 of 74: Mark Unseen   Jul 13 20:07 UTC 2000

Some bike wheels are so bad that you really cannot make them much worse, which
was the case for the one I learned to true (an old three speed).  Why do you
want the spokes dished to one side?
scott
response 19 of 74: Mark Unseen   Jul 13 21:12 UTC 2000

The rear wheel needs to be dished to make room for the gears.
mdw
response 20 of 74: Mark Unseen   Jul 14 01:30 UTC 2000

On my hybrid, there seems to be an extra-long axle segment on the side
away from the gears, and it *looks* like the whole assembly is intended
to be symmetrical.

I think my spoke wrench was a little circle with 3 different sized
openings.  Naturally, this meant 2/3rds of the time, I'd try the wrong
opening first, and the process of figuring out which opening was right
interferred with my ability to remember which way I was tightening the
spokes, not to mention I had a bit of trouble deciding which way was
going to tighten them, and which way was going to loosen them.  It's not
that it was hard, it just was a lot of pesky little stuff to figure out
and remember, all at once.
keesan
response 21 of 74: Mark Unseen   Jul 15 01:18 UTC 2000

A piece of tape on the right size opening?  Jim would be curious to take a
look at Marcus's symmetrical wheel.  He says the right pedal sticks out more.
n8nxf
response 22 of 74: Mark Unseen   Jul 18 02:31 UTC 2000

A couple of ago, while I was helping out with One Hell of a Ride, My wheel
truing abilities were challenged when a woman asked me if I could make her
new bicycle rideable again.  It had bounced out of her bike rack while she
was on I-94 on her way to the ride.  Both wheels hardly cleared the fork and
stay blades, to say nothing of the brakes!  With the aid of my 2 lb hammer,
some cardboard and my spoke wrench, I managed to get them to the point where
they no longer rubbed the brake pads!  I loosened the brakes a tad but, hey,
I did all this without removing the wheels!
scg
response 23 of 74: Mark Unseen   Jul 18 06:38 UTC 2000

Ok, I'm impressed.  After reading the first part of that, I was about to
interject that the rims were dead.
n8nxf
response 24 of 74: Mark Unseen   Jul 18 11:56 UTC 2000

Those wheels were dead, but at least she got to do the ride.  If I had the
time and had been in my shop, I'm sure I could have gotten them to be
almost perfect, but it's money better spent on new wheels instead of my
time.  She also needed a new seat and handle bar.
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