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Jul
6
comment Clicking noise from crankset
It sounds like the rear derailer is simply misadjusted.
Jul
6
comment Most effective upgrades on Road bike
So long as the bike fits you, nothing you can do will make THAT much difference. Just enjoy the bike, and only replace stuff you discover doesn't suit you.
Jul
5
comment triathlon handlebars for ultegra di2
I don't see how (i) is "nasty work". It should be quite simple and straight-forward. I've never looked closely as an electronic shifter setup, but it may even be possible to do it without cutting wires (by putting multiple wires under one screw terminal, eg), or someone may sell a harness adapter to do it.
Jul
4
comment Spoke tension - is a left tilt ok to prevent explosion?
Breaking at the nipple end is often a combo of poor quality spokes and an oblique angle of the spoke to the rim, such that the spoke is forced to flex quite a bit on entry to the nipple. The oblique angle, in turn, can be due to a combo of an oversized hub and/or a relatively small wheel.
Jul
4
comment Spoke tension - is a left tilt ok to prevent explosion?
What do you mean by "exploding inside the nipples"??? If you mean that the nipples themselves are splitting open then they sound like inferior nipples. As to the longer nipples, nipples come in various lengths -- there's not really any pattern only some lengths work better with certain rims. And having the wheel perfectly centered is only really critical for rim brakes.
Jul
4
comment What tool is needed to adjust this headset on a children's bike?
In that case it's just another lock nut.
Jul
4
comment Can small pebble inside tire puncture the tube?
There would only be significant friction if the tire is run at low pressure. For tires held at high pressure the tube is generally almost welded to the tire.
Jul
4
comment Training Wheels for an Adult
Should be no real need to remove the bottom bracket. Remove the chain, maybe, and tape the crank arms horizontally after removing the pedals.
Jul
4
comment Training Wheels for an Adult
Yep, that's a very good suggestion. A relatively small bike with the pedals off and the seat low enough to walk flat-footed. Use it until you can coast along pretty well, then the pedals can be added back and the seat raised.
Jul
3
comment Weed-eater bike conversion - Safe rpm?
So you'll be driving the rear wheel at about 375 RPM. That's about 2600 feet/minute or 30 mph. (Hold onto your hat!)
Jul
3
comment Are there road bike tires invulnerable to popping?
What do you mean by "popped"?? The tires should not be coming off the rims. If they are the rims are shot or the tires are the wrong size for the rims. (Or "someone" is mis-mounting the tires.)
Jul
3
comment What tool is needed to adjust this headset on a children's bike?
Do note that if what you want to do is adjust stem height/angle that's done with the bolt at the top of the stem. And I agree with Davonin that the notched flat thing is probably just a washer, with no threads. You use the knurled nut below it to adjust the bearings, after loosening the top nut. The notches are probably used to prevent the washer from turning (and indirectly turning the knurled nut) while tightening the top nut, but firmly holding the knurled nut will serve the same purpose.
Jul
3
comment What tool is needed to adjust this headset on a children's bike?
Note that, although this is commonly called simply a "spanner" or "spanner wrench in the US, "spanner" in the UK is the term synonymous with "wrench" in the US. So "spanner" will produce a lot of bogus "hits".
Jul
3
comment Are there any tricks or pitfalls in timing gear changes?
There are "ramps" on the sides of the sprockets that catch the chain pins and pull them up when shifting to a larger sprocket. These are usually arranged in a pattern such that the pin is "caught" at one point in the stroke and lifted over about a quarter rev. If you shift the front to a larger sprocket at the wrong point in the stroke it may take that quarter rev before the shift actually starts. (But shifting to a smaller front sprocket "doesn't care", and there's no way to "time" rear sprocket shifts.)
Jul
3
comment Cant get my rear derailleur to reach all cogs
Make sure you're getting full movement out of everything. Make sure the cable end anchors are not flexing as the cable gets tighter (and make sure a rusty cable is not limiting motion). Make sure the derailer limit adjustments are not causing the problem.
Jul
3
comment Are there road bike tires invulnerable to popping?
And a "stupid" question: Do you have rim strips on the rims, to cover the spoke ends?
Jul
3
comment Are there road bike tires invulnerable to popping?
You keep saying "popped" -- what happens when the tire "pops"???
Jul
3
comment Are there any tricks or pitfalls in timing gear changes?
It's mostly a matter of easing up a bit on the pedals when shifting.
Jul
3
comment Cant get my rear derailleur to reach all cogs
It sounds like your shift lever simply doesn't have enough movement for the derailer.
Jul
2
comment ergonomically sound seat types or features?
FWIW, a big part of actual seat comfort relates to friction. You want a seat that provides "good friction" to keep you from sliding forward, but doesn't cause too much "bad friction" that contributes to "butt burn" (though "butt burn" is also a factor of butt hair, believe it or not).