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location Minnesota, USA
age
visits member for 3 years, 4 months
seen 58 mins ago

Old, tired, crazy.


Aug
22
comment Do skilled cyclists really “use the front brake alone probably 95% of the time”?
I don't normally like to contradict Sheldon, but I recall, maybe 15 years back, seeing a video where a "skilled" (stunt) cyclist intentionally locked the front wheel. He went head-over it the blink of an eye, and I seriously doubt that the rider was not "braced against the deceleration".
Aug
22
comment What makes one road tire have a less “bouncy” ride than another?
Well, at the same pressure the narrower 25 would be slightly softer. And presumably even the same width would be slightly softer in a non-puncture-resistant tire.
Aug
21
comment Whole Bicycle Rack Easily Removed! Is the provider liable?
And if the thief had the time and tools to remove the rack, he could just as easily have had a Sawzall to cut through the rack.
Aug
21
comment Whole Bicycle Rack Easily Removed! Is the provider liable?
I doubt that you can prove liability in court, though the store's insurance company might be willing to provide some sort of settlement. (One wonders what you were doing "for hours" at a supermarket. The store will argue that the rack was for customers.)
Aug
21
comment What makes one road tire have a less “bouncy” ride than another?
Just out of curiosity, what do you mean by "less bouncy"? Were you previously experiencing some "bob" when pedaling that is now less noticeable, eg, or is it simply that the new tire seems harder.
Aug
21
comment Why do we rarely see recumbents and almost never see velomobiles?
Wellllll, given how much regular cyclists look down their noses at 'bent riders, do they even have noses long enough to deal with "velomobile" riders??
Aug
21
comment Protocol for slipstreaming another cyclist?
Most analyses have shown that, in cycling, the "draftee" does not suffer measurable energy loss due to being drafted. There is a significant amount of added stress, however, due to needing to be concerned about the drafter, not making sudden changes in speed, etc.
Aug
21
comment How does a two wheel drive bike work?
Hmmm.... That's a chain drive with a bit of a Rube Goldberg gear mechanism at the top of the fork. Seems like it would apply significant unbalanced torque to the steering tube. And the long chains would be apt to collect trash when off-road.
Aug
20
awarded  Nice Answer
Aug
20
comment Could I be pumping up my tyres the wrong way?
I'll add that the classic example of a pump with poor compression ratio is your inexpensive "compact" frame pump. Such pumps are rarely capable of achieving more than 50-75 PSI, even if you sit there and pump for 30 minutes.
Aug
20
comment Could I be pumping up my tyres the wrong way?
When you have the problem that the tire is hard to pump from the start then a bad valve, improperly connected chuck, or something similar is a likely cause. But if the pump simply gets harder and harder to use as pressure goes up, then it is, as you suggest, the pump geometry that's causing the difficulty.
Aug
20
comment Could I be pumping up my tyres the wrong way?
But asking "what brand/model" is of little use unless the pump happens to be one of a small number of well-known brands/models where the design pressure can be identified.
Aug
20
comment Could I be pumping up my tyres the wrong way?
A pump's max pressure is limited by its compression ration. A "general purpose" handpump (designed for car tires and kids' bike tires) will generally only be good up to 80-100, whereas a pump designed for high-pressure tires will be good to 140 or above.
Aug
19
comment Does the inner tube affect the maximum PSI?
Keep in mind that when you start with an empty tire each stroke is only injecting air at 14psi. As the pressure goes up, the volume of air goes down proportionally (the air compresses), so each stroke injects less. You will notice as the pressure gets quite high that you only hear air entering the tire during the last inch or two of travel of the pump piston, since most of the pump stroke was spend simply compressing the air to match the pressure in the tire.
Aug
19
comment Could I be pumping up my tyres the wrong way?
See this answer: bicycles.stackexchange.com/a/10845/1584
Aug
19
comment wedge/saddle rail mounted bags interchange
I would be surprised if any distinct brands interchange. You may, of course, find the same line of bags sold under different brand names, especially with the "no-name" brands.
Aug
18
answered I want to buy something that lets me mount my bike on the wall. What could I buy?
Aug
17
comment Can't remove crank arm on older Mercier
Yep, cottered crank, a scheme that largely disappeared about 35 years ago. A cotter pin press is ideal, and gives you some vague hope of not destroying the pin. Otherwise it's a lot of hammering, and possibly having to resort to drilling it out. Soak it for 2-3 days with Liquid Wrench et al before you tackle it.
Aug
17
comment the derailer is touching chain and it won't let me go past 14 speed supposed to go 21 speeds
@MikeSamuel -- If 1/3rd of his gears are "missing" then it's almost certainly the front derailer (which is a perfectly legit American spelling). And all 3-ring front derailers look bent to the naive observer.
Aug
17
revised the derailer is touching chain and it won't let me go past 14 speed supposed to go 21 speeds
rolled back to a previous revision