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location Minnesota, USA
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visits member for 3 years, 4 months
seen 4 hours ago

Old, tired, crazy.


Nov
20
comment Were these bearings defective?
But in this case the bearings aren't pitted -- they "peeled" apart in layers, like Russian nested dolls. This probably results from improper heat treating of the bearings, resulting in fairly distinct layers with different properties.
Nov
19
comment Why do my tires keep losing air, even after having the tubes replaced?
I've never needed to use water/soap to find a leak. Just inflate the tube to near twice normal diameter and listen/feel for leaks. Your face is particularly sensitive to the feel of the escaping air.
Nov
18
answered Why do my tires keep losing air, even after having the tubes replaced?
Nov
18
comment How to break reinforced Shimano pin?
I've never done one (prefer SRAM links instead) but I've watched a bike mechanic do it a few times. IIRC he just took a pair of pliers and snapped them off -- it took all of about 3 seconds.
Nov
18
comment How can I use a small Shimano BB on any frame?
Shimano likes to make the "fixed" cup part of the cartridge. For this reason, unless that cup will thread into your BB, you probably can't use the cartridge.
Nov
18
comment Anyone make a 31 or 31.1 mm seatpost?
Just for grins I went through Sheldon's page and picked out the different sizes -- 39 altogether (though certainly a few are "oddball" sizes only used on one or two bikes): 21.15, 22, 22.2, 23.4, 23.8, 24, 25, 25.4, 25.8, 26, 26.2, 26.4, 26.5, 26.6, 26.7, 26.8, 27, 27.2, 27.4, 27.7, 28, 28.6, 29.2, 29.4, 29.6, 29.8, 30, 30.2, 30.4, 30.6, 30.8, 30.9, 31, 31.2, 31.4, 31.5, 31.6, 31.8, 32. Of course, you can "cheat" a little between sizes, and more with the proper shims, but still it's more than is reasonable to expect anyone to carry.
Nov
18
comment Anyone make a 31 or 31.1 mm seatpost?
Don't have an answer for you, but I can kinda sympathize. There are so many different seatpost sizes and few places have a complete selection. Dunno why this has never been standardized to any degree.
Nov
17
comment Time trial improvement from new bike
The R3 has several advantages over the Rockhopper: No shocks, aero position, narrower tires, and lower weight. Their significance is probably in that order. Gaining 3 mph or so would be reasonable to expect.
Nov
17
comment Were these bearings defective?
I've never seen bearings fail in that fashion.
Nov
16
answered Breaking spokes on adult tricycle
Nov
16
answered How bad is this damaged lug
Nov
16
comment “wound” on the tire side
Yeah, if cord is showing the tire should probably be replaced. But you can take it to a bike shop and ask the mechanic -- some lightweight tires have the cord virtually on the surface and a little fraying wouldn't indicate serious damage.
Nov
16
comment How do I re-attach a crank that has fallen off?
You probably need a new crank arm, and, unless your LBS has a "broken" set, they come in pairs -- left and right. This is a "crankset". Generally the crankset will come with sprockets. The crank axle is separate (but it's dumb to replace the crankset and not the axle, unless you're certain it's not damaged). However, you can try reattaching the existing arm -- go ahead and hammer (though not too vigorously) and see if you can get it to seat. If that seems to work, though, you'll need to re-tighten the bolt almost daily.
Nov
15
answered How do I re-attach a crank that has fallen off?
Nov
15
revised Comparing gear ratios on different bike types
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Nov
15
comment I know there are better rain-forecast sources than “hourly forecast” websites. What's the best such source?
All a TAF or any other forecast 5-8 hours out will be able to tell you is probabilities. Looking at radar I can estimate pretty well that, say, a band of rain will come through in 20 minutes, last 10, and then there will be dry weather for the next 30. This is the sort of info that's useful if you want to know it it's a good time to leave work, eg. For longer periods -- more than an hour or two out -- you just have to play the probabilities, though.
Nov
14
comment How accurate are indoor trainer power meters?
Also keep in mind that on the trainer you have no natural cooling like you on a bike. This can significantly limit your power output.
Nov
14
comment Which MTB Inner Tubes
Are you using a belted tire? The Mountain King apparently comes in belted (ProTection) and unbelted versions.
Nov
14
comment How accurate are indoor trainer power meters?
The watt meters on exercise equipment are not generally terribly accurate, and a variation of 30% or so from "reality" isn't at all out of the question. In addition, I've always suspected that you can't generally get as much power out of a stationary bike as you can on a real bike, probably due to the way you shift your weight around on the bike.
Nov
13
revised Comparing gear ratios on different bike types
added 422 characters in body