33,486 reputation
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location Minnesota, USA
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visits member for 3 years, 8 months
seen 4 hours ago

Old, tired, crazy.


3h
comment Would a person standing on the top tube damage a carbon fibre road bike?
Yes, a BSO from Wally World will probably support more weight on its top tube than any sort of fancy bike. In your traditional diamond frame there is very little "bending moment" on the tubes -- it's all tension/compression -- and the tubes do not need to be made to greatly resist bending. In the name of lightness the tubes of better quality bikes are made as thin as practical, and, eg, steel bikes generally have "double butted" tubes that have thinner walls in the middle than on the ends.
16h
comment Would a person standing on the top tube damage a carbon fibre road bike?
I would say that there's a danger on any lightweight bike. The center of the tube is its weakest point.
1d
comment Is it safe to ride a steel bike with a dented/buckled frame?
(I once saw a bike with the down tube rusted completely in two, and still being ridden. Not that I recommend that.)
1d
comment Is it safe to ride a steel bike with a dented/buckled frame?
While the dent there is not good, it doesn't look terribly bad. Where your dent is is probably about the lowest-stress location on the frame -- if you were going to dent it, that's the place to do it.
2d
comment What size is the tiny ball bearing used in SRAM brake caliper quick release detents?
I've seen some pretty small balls inside a freewheel.
Jan
26
comment Hamstring pain while cycling
It sounds likely that your seat is too low. Your knee should be almost straight at the bottom of the stroke, while seated.
Jan
26
comment Brake pads and removing the wheels
(It's not "normal", but it happens, and is likely more common on "fat tire" bikes. It is unusual on road bikes, however.)
Jan
26
comment Brake pads and removing the wheels
There are several different brake designs, so perhaps you should describe yours better, or,better still, include a picture.
Jan
26
comment What size is the tiny ball bearing used in SRAM brake caliper quick release detents?
Likely any bearing of about the right size will work -- doesn't have to be exact. And any bike shop should have an assortment of balls, if you can't find something in your junk drawer.
Jan
26
comment How do I remove old hockey tape from drop bars
I generally start with regular bar tape and then apply the hockey tape when the bar tape begins to slide (which only takes a few weeks). A new layer is then applied over the old every year or two, after peeling off any bits that have come loose.
Jan
26
comment Wear and tear and warranty
When you figure chain length, don't measure the length of the old chain, count the number of links.
Jan
26
comment Schwalbe Marathon Plus recurring puncture - options?
FWIW, I favor Tyvek-belted tires over the ones, like Schwalbe, which simply use a plastic belt. The Tyvek is much more puncture resistant, and I feel that it's lower rolling resistance as well.
Jan
26
comment Schwalbe Marathon Plus recurring puncture - options?
Yeah, it sounds like there's still something embedded in the tire. Either that or the hole is large enough that the tube is simply ballooning through. (The hole does look pretty large in the pictures.) If it's just the hole enlarged you can boot it with either a commercial boot or a piece cut from the sidewall of an old tire. If there's something still embedded at this point then you'll probably destroy the tire trying to get it out, so just get a new tire.
Jan
26
comment How do I remove old hockey tape from drop bars
(And hockey tape really is the best thing for handlebars. Though it seems like the last stuff I bought was poorer quality than previous -- like everything else, I guess.)
Jan
26
comment How do I remove old hockey tape from drop bars
Never had any trouble. Of course, I leave the stuff on until it's ready to fall off anyway, and it's usually over a layer of regular handlebar tape.
Jan
25
comment How do I make my frame water tight?
You do of course have to remove the headset, bottom bracket, and any other mechanisms in the bike. (And I'm highly skeptical whether that stuff is really effective.)
Jan
25
comment Can I cut down a quick release skewer?
You can cut the skewer, like any bolt. You should find two standard steel nuts that fit the threads, thread them on, lock them against each other, then use them to guide you saw cut. Once the cutting is done, unthread the nuts (helps clear the threads) and then dress the end with a fine file. (Will never be as nice as a stock skewer, however.)
Jan
25
comment Food for 400+km ride? (in single session)
You need a variety of stuff, not just Cliff bars. With a balance of carbs that register across the glycolic index scale, a little bit of fat, a bit more protein (but not a whole lot), and some fiber (but again, not too much).
Jan
24
comment Repair or Upgrade Centrepull Brakes?
If the front works fine but not the rear, and the levers and brakes themselves are essentially identical, then there is something wrong that can be fixed. In addition to the pads, I'd suspect that perhaps you have a corroded cable. And make sure that the brake levers do not/cannot be pulled all the way to the handlebar -- if they touch the handlebar under maximum force then the cables are not properly adjusted.
Jan
23
comment How tight should the spokes be on a bontegra wheel set stock for a madone 5.2?
Stupid question: Was the wheel wobbling, or was the bicycle "shimmying"? Bicycle shimmy (which is indeed quite frightening on a downhill) is usually due to a combo of frame flex and the way weight is distributed. Poorly secured loads on the bike are another possible factor.