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Jun
10
comment Validity of UCI motor concerns
I think for "mechanical doping", they'd be looking for devices such as the Vivax Assist. Which can be concealed in the seat tube, rather than quite visible hub motors. Most e-Bike motors are purposely limited to lower speeds to increase safety, but I'm sure a motor could be designed that would help a professional rider if that was the goal.
Jun
10
comment bicycle pedal design specifications for threads
@Batman I think you're right. Now that I think of it, even the lower end bikes that I've seen recently seem to have 9/16" inch pedal threads. Perhaps I'll check the pedals on my kids' bikes and get back to you on that. I was kind of just going from the information on Sheldon's site, which can (understandably) be a little dated in some areas. Also, Sheldon mentioned the now defunct "Dyna Drive" system which used must larger thread I think if you're designing a pedal or crank arm, you would pretty much cover the entire market by just going with 9/16".
Jun
10
answered bicycle pedal design specifications for threads
Jun
10
awarded  Custodian
Jun
10
comment Why exactly did Boardman manage a further distance than Wiggins?
I guess it depends on your flexibility. Every time I try getting really low like that, I find it helps me go faster, but my legs tire out really fast. I think this position forces you to use your muscles differently,
Jun
10
awarded  Good Answer
Jun
9
awarded  Custodian
Jun
9
reviewed Close How is Sir Bradley Wiggins 3D printing his titanium handlebars?
Jun
9
comment Why exactly did Boardman manage a further distance than Wiggins?
It's extremely uncomfortable, and it's also quite difficult to control the bike in this position. It's best used when you're the only one on a velodrome track. There's a reason stuff like this isn't allowed in competitions.
Jun
9
answered Why exactly did Boardman manage a further distance than Wiggins?
Jun
9
answered Mountain Biker wanting to change to cyclo or road? Which one?
Jun
9
comment Are Hövding helmets safer than regular helmets?
Good to hear comments from an actual user. My biggest problem that I can see is that it isn't actually reusable. Neither are regular bike helmets, but I've have fallen 4 or 5 times in my time cycling, and only once have the actual helmet come in contact with the ground. And even that time it was an ever-so-slight contact that I didn't feel the need to replace the helmet. Replacing a $300+ helmet every time I had a fall could get kind of expensive, even if it was less than once a year. Also, it looks like it could be easily push around the back of the head if you hit it from the front.
Jun
7
comment back tire keeps going down
When putting it in water, make sure you pump it up big, like at least 1.5 times as big as it would be in the tire. Also, try squeezing the tube as you place it under the water. If you still can't find the hole, maybe just get a new tube. They aren't very expensive. Just be sure to check the tire for debris that caused the existing puncture and remove it.
Jun
4
awarded  Nice Question
Jun
3
comment Do certain makes/models/types of bikes get stolen more than others?
Yeah, the professional bike thieves can get pretty nasty. Even the best locks can't stop them. I know a guy who has his stem removed and his forks stolen from a nice mountain bike. I guess there's security nuts you can get to make it harder to disassemble the stem. However, when somebody is willing to go through the trouble of disassembling the bike to steal individual parts, If you aren't careful about it, you could probably take most of the important components off a frame in under 20 minutes.
Jun
3
comment Why aren't hub/drum/roller brakes suitable for touring?
I'm not familiar with them, but I think there's a certain complexity to them that isn't welcome when touring. If something goes wrong and you're 100 miles from nowhere, it's going to be difficult to fix. With rim brakes there's very little that could go wrong, and you could always bring spare parts with you in the event that something does break. Also, I've heard of people being weary of disc brakes for the same heat and heavy loads concerns that you have with hub brakes. Most "real touring" bikes will come with cantilever or v-brakes.
Jun
3
awarded  Nice Answer
Jun
2
revised What is the easiest to upgrade my chainrings from a double to a triple?
added 435 characters in body
Jun
2
answered What is the easiest to upgrade my chainrings from a double to a triple?
Jun
2
comment Fundamental principles of tire friction for off-road biking
Speaking of downward forces, cars have the ability to generate their own downforce using wings. This means they can generate more force on the ground than can be done just with gravity. F1 cars can generate as much as 5 G's of downforce. Something like this simply isn't possible with a bicycle.