mac

 

Jul
19
comment Mapping a NumPy array in place
@aag - The syntax for string formatting has changed in py3. Documentation is here.
Jul
2
awarded Inquisitive
Jul
2
awarded Curious
Jul
2
awarded Curious
Jun
29
awarded Popular Question
Jun
27
awarded Yearling
Jun
27
awarded Yearling
Jun
26
awarded Notable Question
Jun
8
awarded Popular Question
May
3
awarded Constituent
May
3
comment Why are 10 speed chains so expensive?
@zenbike - I never claimed the contrary, though. :) I just claimed that the OP did not make an assumption, but formulated a hypothesis. If anything, my implicit message was that while assumptions per se are rarely useful, a hypothesis is, as it is a required passage in the search for truth (at least if you use the scientific method). Also, a hypothesis is to be considered valid until disproved (or until an alternative one relying on less unknown factors is formulated - it's the lex parsimoniae). So a hypothesis - while non strictly factual - can still be a good answer.
Apr
26
awarded Commentator
Apr
26
comment Why are 10 speed chains so expensive?
@zenbike - The original poster misused the word though: the initial fact it claims as an assumption was documented in an article. In the second occurrence of the word, he actually meant "hypothesis" (assumption: a thing that is accepted as true or as certain to happen, without proof --- hypothesis: a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation). Hypothesis are the starting point for establishing scientific truth.
Apr
26
comment Terminology index - a list of bike part names and cycling concepts
I'm not sure that citing Lance Armstrong as an example is really useful, given that he achieved his performances through doping...
Apr
22
comment Can an IGH have the same maximum overdrive-ratio as a crank-sproket setup?
@AyanMullick - I have no idea, but I suspect you are underestimating the complexity of a IGH... Rohloff, which is the closest to "handmade IGH" you can go, has basically only one product (speedhub): it took them a full 2 years to develop, and it has over 120 moving parts sourced from 80some different factories around Germany...
Apr
22
comment Can an IGH have the same maximum overdrive-ratio as a crank-sproket setup?
@AyanMullick - I would guess that the roadblock is more practical than theoretical: very high or low ratios would require more mechanical sturdiness which would increase designing and production costs. Also, for the hub to be usable, it should still offer "regular" ratios, spaced at reasonable intervals (Alfine has 14%, Rolhoff has 13%, for example); this would mean fit a lot of gears in a very limited space (again: feasible, but economically not viable)...
Apr
22
comment Can an IGH have the same maximum overdrive-ratio as a crank-sproket setup?
@jbuk - Actually, IGH manufacturers set a limit for the amount of torque their system can take, so you are limited in the choice of sprocket you can fit. Rolhoff is very restrictive about it, Shimano seems to be far more permissive.
Apr
22
awarded Caucus
Apr
21
awarded Student
Apr
20
comment How much does rider weight increase tire pressure?
@DanielRHicks - Ok, now I get it, although I could argue that if I sit an infinitely heavy rider on it... ;)
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