zenbike

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I'm a self-teaching geek. teaching because that process is far from over. I don't know a ton, but what I know, I'll share, and I won't answer a question if I'm not confident I'm correct.

	16,847 reputation	bio	website		visits	member for	2 years, 2 months
12548 badges		location	Al Ain, United Arab Emirates		seen	1 hour ago

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924 Comments

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May 18	comment	Does frame size inside a particular model affect the ride characteristics of the bike? Actually, those things are exactly what progressive frame designs are all about.
May 17	comment	Why don't road bikes use v-brakes? And that, while what you say is true in that if you were redesigning a v-brake from the ground up, you might be able to make one work, that would be a new brake. Not the existing design under discussion.
May 16	comment	Italian bottom bracket Shimano BB-6400 fixed cup tightening - what tool? Don'forget to accept the answer, if youre satisfied.
May 11	comment	Where can I find a square tapered bottom bracket for my TREK Navigator 200? Two weeks, to order a part is not out of line. It can take 6-8 weeks. If you need your bike, and the BB is still in condition to ride, ask the shop to put it back together while you wait for the part. And a basic quality BB of this type should cost 30-50 dollars at a shop, plus labor to install. Not exactly highwy robbery.
May 11	comment	Where can I find a square tapered bottom bracket for my TREK Navigator 200? To point you in the right direction: Trek doesn't make bottom brackets. They buy them, usually from Shimano. Your bike has an english thread, probably 68mm BB shell, and will us either a 68x113mm or 68x118mm cartridge BB. Most good shops will have these in stock, but they are not used on new bikes anymore, so they are getting more difficult to find.
May 11	comment	Where can I find a square tapered bottom bracket for my TREK Navigator 200? This seems to be more rant than question. What is it you actually want to know? You say there was no part number on it. You haven't listed sizes or pictures. Try editing the question until there is a question to be answered.
Apr 27	comment	What are some ways of coping with asthma while biking? This is a medical question not a cycling question, which also requires a localized answer. I would suggest speaking to your doctor. The difference could be anything from a rise in pollen counts in your area, to any of a dozen lung ailments. We are not qualified to answer. I feel this is not the right forum to ask this type of question.
Apr 27	comment	What factors determine stem length ? So at 159.8 cm tall you are 5 foot 2.9 inches tall. If as you commented below you have long legs for your height, then I would look for a 48 or 49cm frame, with a 65 mm stem. However, given your body proportions, which appear to be unusual, you need to find a trustworthy and skilled bike fitter. Anything we say here is only a best guess.
Mar 2	comment	Why do current, entry-level shimano rear derailers have large-diameter pulleys? Friction in the derailleur pulley is not low, in general. That is not because of chain tension, but rather because of the low end engineering used to make the pulleys. Larger cogs do decrease resistance by decreasing the angles required to wrap and unwrap the chain, and there are products made solely to fix that problem.
Mar 2	comment	Why do current, entry-level shimano rear derailers have large-diameter pulleys? While the pulley size does require more chain, it does not allow a larger cog because of that. The extra chain is taken up by the pulleys themselves.
Mar 2	comment	Why do current, entry-level shimano rear derailers have large-diameter pulleys? The derailleur pulley size does not change your gearing.
Feb 28	comment	Can I use a shock pump to inflate a tube? @Benzo: It wasn't intended to be realistic. It was deliberate exaggeration. However, it wouldn't be 10 minutes. It took more than an hour to fill a tire with a shock pump, the one time I was desperate enough to try.
Feb 24	comment	What should I use to lubricate a freehub? @jimirings: Again, WD-40 is designed as a penetrant. it is not designed for durable lubrication. They do also have suitable, bicycle designed products, but WD-40 is not suitable for bicycle lubrication.
Feb 4	comment	Why don't road bikes use v-brakes? That's good to know.
Feb 3	comment	What is the stem/seatpost thing on the Bicymple? Edited the link to their kickstarter page, since the website link appears to be down.
Feb 3	comment	How many people use their mountain bikes for road riding? Is the question here how many people use their MTBs on pavement? Or what bike should I get if I'm going to use my MTB on the pavement?
Jan 29	comment	Do I need a separate dishing tool for building wheels with park tool TS-2.2 truing stand? Thanks. Just common sense.
Jan 20	comment	Are there any scientific studies proving the benefits of clipless pedal systems? Downhill racers notice significant differences in handling between flat and clipless pedals. It's just that they have the overriding necessity to be free of the bike during their regular and inevitable crashes. That means that for a DH rider, a flat pedal has a benefit which clipless does not offer. And so many choose to use them. That safety choice does not mean that it would not be easier to traverse the same terrain using a clipless pedal. The difference in handling may not be discernible to the observer. I assure you it is discernible to the rider.
Jan 20	comment	Is the Suunto Ambit compatible with the Bontrager DuoTrap Digital Speed/Cadence Sensor? Since both items are ANT+ radios, they are compatible, by definition. There is no need to physically pair them to know that. This question states that they are ANT+ compatible, and then says it is not possible to know if they will work together without trying it. Either there is a profound lack of understanding of the concept of ANT+, or this question was poorly phrased.
Jan 7	comment	Any experience about radially-laced hub flanges actually breaking? There are many wheels which are laced radially on the rear, like the bontrager set mentioned above. I do not recommend it, nor do I think it is a correct or safe way to build a wheel, but then, I wouldn't build any radial wheel, anymore. The photos on the link mentioned above are the same bontrager hubs. That type of failure is typical from what I've seen of the over tensioned wheel failure they are prone to. There also was an issue with a batch of Bont hubs with defective material or design. As for the width of the flange, that's just common sense. Less material equals less strength.