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age 46
visits member for 2 years, 8 months
seen Mar 24 at 16:37

Mar
3
awarded  Caucus
Feb
15
awarded  Nice Answer
Jan
21
comment Techniques for safely leaving a bike for 1-2 minutes in a safe-ish place
If you live in a place where 3 of your friends have had their bikes swiped by leaving them unlocked for a short time, I would suggest that you just LOCK the bike. The only other alternative is to simply accept that there's a risk it will be ripped off.
Oct
31
answered What accessories do I have to add to my bike so that I may commute during rainy weather?
Oct
31
comment Repeat Punctures
Yes, I would add that a careful inspection of the outside of the tire where you pinch the outside tire to open up all the visible nicks often helps to find embedded shards of glass or metal. In a situation where you're on a long ride, not finding the root cause of a flat is a recipe for misery.
Oct
31
comment Are there any scientific studies proving the benefits of clipless pedal systems?
@AdamRobertson, I also find this "consensus" to be silly. If there truly were no advantages to clipless, you would have see some riders use platforms in races-- but I have NEVER seen that. Clipless pedals are universal in everything from pro races down to CAT-5 office park criteriums. There are some track riders that use straps, but even there, clipless is the vast majority. Perhaps there is no "scientific evidence" simply because it would be too boring to explore the obvious?
Oct
7
comment How easy are Parabolic v. Standard Rollers to use?
Roller workouts aren't focused on power, they're all about efficiency and form. For that, you actually do want the rollers to be someone difficult because it will translate to smoother form on the road/track. A traditional trainer is better for power-developing workouts.
Oct
4
comment (Automatic Bike Project) amount of torque required to change gears?
Its just a design project for school, so there's no need to for it to be practical. You might consider a rachet mechanism to hold the cable in place when not shifting-- that's your "holding torque". This is the basis of "indexed shifters". Alternatively you could hold the cable with enough friction that it doesn't slip and the motor then just has to provide enough torque to overcome the friction only when shifting (that's how "friction shifters" work).
Sep
5
comment Does the value of an old bicycle depreciate if old tires replace with new ones?
The only reason to keep the tires on such an old bike is if it has some historical significance and it will never be ridden again. In other words a museum piece, like the bike Merckx used when he set his famous hour record: tinyurl.com/klohzso
Sep
5
comment Long Distance (~30mi) Bag Use
OK, now that's not fair, 80F+50% humidity is not "hot and humid"! :-) As far as carrying stuff goes, it might very well be worth it to have duplicate chargers at home and at work. Their weight adds up and the cordage takes up space in your bag. Definitely better to lighten your load to the bare minimum before looking into more drastic changes.
Aug
30
answered How fast can my bike go?
Aug
19
comment How can I merge two GPX files into one?
@2u2, Looking at an example GPX file, I see that waypoint elements, "WPT", have child elements with latitude,longitude and elevation, and time (among other things). The time format is just ISO8601, "YYYY-MM-DDTHH:MM:SSZ". This is UTC time. So if you have some waypoints and their times, you can just add them if you convert local time to UTC time.
Aug
19
comment How can I merge two GPX files into one?
THe hard part is getting the gpx for the missing part of the route. You can create a route in google maps and export it to KML (google's format). Then use GPSBABEL to convert KML to GPX. You can then manually merge the two gpx files in an editor.
Aug
14
comment Why are roadies concerned about weight?
@PeteH, not that there's anything wrong with getting a racy, light bike. There are a LOT worse things one can do in a mid-life crisis!
Aug
14
comment Why are roadies concerned about weight?
It certainly is possible to obsess about weight, ~20lbs is a good weight. Once you start to get down to UCI weight-limit and lower (16lbs), it would be silly to fret about ounces and titanium bolts unless one's body fat was in the single digits and racing was the focus.
Aug
14
answered What is considered a good “safe biking distance” to bike to work?
Aug
14
comment Why the narrow wheels on comfort bikes?
From experience, I am pretty sure that wider tires run at lower pressure are less prone to punctures than narrow high pressure tires. The contact patch for high pressure tires is smaller because the force/area on the contact patch is higher. I suspect this could do more to force little tetrahedrons of glass into the rubber. This is why puncture protection on narrow tires for urban commuting is virtually manditory.
Aug
3
awarded  Yearling
Jun
5
comment Are there any scientific studies proving the benefits of clipless pedal systems?
Note however, that in the study they still retained the feet (and only shifted the position of the cleat). Does the same argument still apply if the foot is NOT retained AT ALL or if the toe is on the spindle or if the cyclist slips off the pedal during a sprint? I think NOT!
Mar
27
comment How to protect myself when falling off the bicycle
Not really. It is a motor skill. You just have to practice it, and that means actually falling. It is just much safer to do it at slow speed on relatively soft ground! Freestyle riders do practice on concrete but these are typically people in their teens to early 20's with virtually unbreakable bodies!