527 reputation
28
bio website kylheku.com
location Vancouver, Canada
age
visits member for 2 years, 3 months
seen Dec 22 at 22:46

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Dec
22
comment Are aerodynamic rims worth additional weight?
For normal recreational cycling, you can take the $1500 that would go for a pair of wheels, and buy yourself three very decent bicycles. Or, buy one bicycle and put the rest of the money into an investment fund that, at maturity will be used to replace the bicycle, with the remainder re-invested in preparation for a third bicycle.
Dec
22
comment Are aerodynamic rims worth additional weight?
The missing information here is how the weight is distributed. Any of the extra grams which are in the hub don't matter much as those that are in the rim. The rotational acceleration of mass in the hub is negligible, because it is proportional to the square of the radius. A piece of mass at 13" from centre has 169 times the moment of inertia compared to that same piece of mass at 1" from centre. These weight figures are for the entire built wheel, right? Spokes, hub and all.
Oct
29
comment How to get more tire clearance with caliper brakes?
From the picture it looks like the pads are not sufficiently curved to match the curvature of your wheel diameter. This could be half your problem. Find pads that are more curved.
Sep
24
awarded  Autobiographer
Sep
23
awarded  Yearling
Aug
28
revised Chain slipping on middle chainring
added 492 characters in body
Aug
28
revised Chain slipping on middle chainring
added 492 characters in body
Aug
28
answered Chain slipping on middle chainring
Aug
27
comment Why isn't my suspension bouncy?
@Jahaziel Seat post supension has the feature that it goes away when you stand on the pedals, leaving only the front suspension. This can be regarded as an advantage. It may be ideal for the user who does mostly road work, and little or no downhill trails.
Aug
27
comment Why isn't my suspension bouncy?
A suspension spring does not return at the same rate as it is displaced: the unsprung mass (wheel plus lower part of the suspension) moves the spring quickly under the sudden impulse of the road irregularity. The spring then moves slowly, since it has to move the much greater sprung mass! Damping is about reducing overshoot, and diminishing the oscillations. Without any damping at all, the suspension is a harmonic oscillator whose oscillations store energy. Shocks are absorbed fine, but the oscillations grow in amplitude as the effect of the shocks accumulates.
Aug
20
comment How much does bike price correspond with maintenance needs?
What is Mm? mega-meter? So 20 Mm is 20,000 Km?
Aug
20
comment 29" freewheel ruined (slipping)
This question is ineffective without added information: age and history of the bike (how many miles on the chain?), and close-up pictures of the drive train.
Aug
20
comment How to lubricate cables?
WD-40 contains lubricant. According to the MSDS it contains "petroleum base oil". Not a lot of it, but it's there. You can see it. Spray the stuff on a surface, let it evaporate and there is a film of oil. This oil is not suitable for every purpose; it works in those situations that call for a light machine oil. There is also no mention of any useful additives (anti-rust, anti-wear). So it's not a great lubricant and its claims of being general-purpose are greatly overstated; but it's a lie to deny that it's a lubricant.
Aug
20
comment How to lubricate cables?
This is something generic put into a container which is labeled as being created specifically for non-coated cables. The idea that you need a myriad of separate lubes for every conceivable purpose is just clever marketing.
Aug
20
comment Can I increase my highest gear ratio?
I have 48-11 on a bike with 24" wheels. I can still mash up some hills in that gear and into some headwind. It is not that high. (It seemed high initially, but from regular use, the thighs beefed up.) I can easily see that 48-12 would be perceived as not high enough on 26" or 27" wheels.
Aug
20
comment Can I increase my highest gear ratio?
12 over 11 is a 9.1% increase; it's not a lot, but it's significant. The 18.2% difference between 13 and 11 is huge; half of huge is still something.
Aug
19
comment Chain “vibrates” on higher gears
I had a grinding sound caused by the chain (when on the smallest sprocket) rubbing against the special nut which takes the bolt that secures the derailleur hanger (lugnut-mounted style) into the dropout. The nut is thin, round disc, with a thicker tongue part on one side which mates into the dropout. But with the wide freewheel I was using, which provides a small cog (11 tooth), the chain was coming into contact with the disc, causing rumbling. The fix was to file it down the disc a little bit, focusing on the edge that was catching the chain.
Aug
19
revised Chain skipping on new freewheel and chain setup - What went wrong?
Shorten.
Aug
17
comment Does this chainring need to be replaced?
Note how you're not filing anything on the opposite edge of the tooth, which has a decently shaped profile for meshing with the chain rollers. Maybe you could save yourself a ton of labor simply by reversing the worn ring left to right.
Aug
15
comment How to measure chainring / cog wear?
You probably got downvoted for not answering the question at all, which is very clearly about measuring the tooth wear of sprockets, not about measuring chains, or other methods of scheduling drive component replacement. Also, "wait for it to skip" is the sort of approach you may be able to specifically avoid by inspecting and measuring. Your first chain slip may occur in a situation when it is inconvenient to tend bike maintenance, like in the middle of a trek.