#61
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Shimano Headset
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#62
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Shimano Headset
On Sunday, May 14, 2017 at 1:06:34 PM UTC-7, AMuzi wrote:
On 5/14/2017 12:17 PM, Sir Ridesalot wrote: On Sunday, May 14, 2017 at 1:07:57 PM UTC-4, Joerg wrote: On 2017-05-14 09:37, Sir Ridesalot wrote: On Sunday, May 14, 2017 at 10:24:49 AM UTC-4, Joerg wrote: Snipped Hint: A repetitive scraping noise is usually a sign of imminent wear-out of some part. A derailer hanger coming apart on the 20mi home isn't so cool because that means hoofing the remaining miles. As unbelievable as it may sound I tend to invest that extra minute or two to prevent such things. -- Regards, Joerg http://www.analogconsultants.com/ If you carried a chain-breaker you could shorten your chain when your derailler hanger comes apart and then ride that 20mi home on the single gear. Then you wouldn't have to worry about being stalked by mountain lions. I can do that without a chain breaker. However, Where I ride with my MTB single gear won't help much. You'd be stuck all the time. I use almost the whole gear range on every ride, jumping 4-6 gears all the time because it has to happen fast. -- Regards, Joerg http://www.analogconsultants.com/ You could simply put the chain onto a low gear and ride a bit slower. It'd still beat walking. But then again in your corner of the world nothing easy nor sensible (such as carrying a small multi-tool with a chain breaker on it) works. You'd rather scrounge rocks and rusty nails. Cheers In fairness, Joerg noted "single gear" which has only one chain length (but too those have minimal chain troubles). -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 How would you get chain suck with a single speed? |
#63
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Shimano Headset
On Sunday, May 14, 2017 at 1:26:22 PM UTC-7, Sir Ridesalot wrote:
On Sunday, May 14, 2017 at 4:06:34 PM UTC-4, AMuzi wrote: On 5/14/2017 12:17 PM, Sir Ridesalot wrote: On Sunday, May 14, 2017 at 1:07:57 PM UTC-4, Joerg wrote: On 2017-05-14 09:37, Sir Ridesalot wrote: On Sunday, May 14, 2017 at 10:24:49 AM UTC-4, Joerg wrote: Snipped Hint: A repetitive scraping noise is usually a sign of imminent wear-out of some part. A derailer hanger coming apart on the 20mi home isn't so cool because that means hoofing the remaining miles. As unbelievable as it may sound I tend to invest that extra minute or two to prevent such things. -- Regards, Joerg http://www.analogconsultants.com/ If you carried a chain-breaker you could shorten your chain when your derailler hanger comes apart and then ride that 20mi home on the single gear. Then you wouldn't have to worry about being stalked by mountain lions. I can do that without a chain breaker. However, Where I ride with my MTB single gear won't help much. You'd be stuck all the time. I use almost the whole gear range on every ride, jumping 4-6 gears all the time because it has to happen fast. -- Regards, Joerg http://www.analogconsultants.com/ You could simply put the chain onto a low gear and ride a bit slower. It'd still beat walking. But then again in your corner of the world nothing easy nor sensible (such as carrying a small multi-tool with a chain breaker on it) works. You'd rather scrounge rocks and rusty nails. Cheers In fairness, Joerg noted "single gear" which has only one chain length (but too those have minimal chain troubles). -- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 Well then pehaps in addition to a chain breaker perhaps he should c arry a spare chain too. If I thought that there was a very high probability of trashing a chain 20 miles into the wilderness I'd carry a spare chain too. Cheers Yeegads - it's getting pretty bad when I have to agree with Ridealot. |
#64
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Shimano Headset
On 5/14/2017 12:23 PM, jbeattie wrote:
Anyway, like I said, CPR can save lives ... .... or at least delay death, which remains stubbornly inevitable. -- - Frank Krygowski |
#66
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Shimano Headset
On Sunday, May 14, 2017 at 7:05:02 PM UTC-7, wrote:
On Mon, 15 May 2017 08:54:22 +0700, John B. wrote: On Sun, 14 May 2017 15:00:55 -0400, wrote: On Sun, 14 May 2017 07:42:40 -0700 (PDT), wrote: On Saturday, May 13, 2017 at 8:43:29 PM UTC-7, John B. Slocomb wrote: On Sat, 13 May 2017 13:05:08 -0700 (PDT), wrote: On Friday, May 12, 2017 at 9:57:35 PM UTC-7, John B. Slocomb wrote: On Fri, 12 May 2017 08:23:02 -0700 (PDT), Sir Ridesalot wrote: On Thursday, May 11, 2017 at 10:06:04 AM UTC-4, Joerg wrote: Snipped But then, to one who habitually uses a nail and a rock as a chain tool the use of proper tools is probably a mystery. Try to differentiate between an outdoors emergency situation and the workshop in the garage. It's not that difficult. - Regards, Joerg http://www.analogconsultants.com/ Which is hy mose of us carry a small tool repair kit that includes a chain-breaker. That way a broken chain isn't an ememrgency and a repair only takes a few seconds. After all seconds count when you're beig stalked by mountain lions or other hungry critters doesn't it? For someone who either breaks chains a lot or often comes across people with a broken chain (bother very rare where I ride even on the technical trails) it ONLY makes sense to have a chain breaker and spare link(s)and quick-link WITH YOU. To be honest using a rock and rusty nail to repair a chain in the field sounds like something an armchair bicyclist would think up. Such a repaired chain would most likely fail again after only a short distance. Believe it or not there's good reasons why chain breakers are used to fix a chain. Cheers Out of curiosity I weighed and measured the chain tool that I carry in my bike tool kit. It is 2-1/2 inches in length and 2-1/8 inches in height. 1/2 inch thick, at its thickest, and weighs 2.6 ounces. It works with chains up to and including 10 speed chains (I don't own an 11 speed). Frankly, as a broken chain immobilizes the bicycle I can see no logic in not carrying it. Since I have never once had a broken chain nor seen one I cannot see any requirement to carry such a tool. Yesterday I did 55 miles and 2500 feet of climbing with some of it pretty steep ~12%. There were fore of us there and the dirt encrusted on the bikes showed a certain lack of careful maintenance. No one had any problems. I have been carrying all these tools around for the last 6 years and the only one's I've used are the tire repair tools. Equally, I have had two crashes severe enough to break bones and in neither did my head strike the ground. Thus, based on your logic, there is no reason what so ever to wear a helmet. There is almost no reason to wear a helmet under any conditions. If a helmet was just barely able to protect me in a fall literally from 18" what makes you think that a helmet can do anything other than protect you from getting scratches on your head in a sideways fall at a dead stop? My oldest daughter hit her head on a concrete retaining wall hard enough to crack the hardshell bike helmet and came away without a scratch (on her head - she did get a bit of "road rash" elsewhere)- and most certainly would have suffered a concussion without it. The foam lining and hard plastic shell absorbed a LOT of impact. Of course it happens. But equally, I had a run away horse run under an apple tree and knock me off. In fact I was unconscious for a short period. No helmet, and no concussion, or at least none that evidenced any symptoms. Similar situation but the took me off on hydro pole. Took me right out of my boots - and my ribs were sore for a month. But my post was in response to someone that stated that, he rode 50 miles and didn't need a chain tool, thus chain tools aren't necessary. I, perhaps somewhat whimsically, pointed out that as I had two severe crashes without injuring my head that helmets obviously weren't necessary either. Alternately, there have been a number of people that fell or jumped out of airplanes without a parachute and survived. Which may prove that parachutes aren't necessary either. Any safety equipment that is not overly intrusive is worth using I will agree to that with the stipulation that most crashes on a bike are fall-offs with the head only being the minor damage. |
#67
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Shimano Headset
On Sunday, May 14, 2017 at 7:45:47 PM UTC-7, Frank Krygowski wrote:
On 5/14/2017 3:00 PM, wrote: My oldest daughter hit her head on a concrete retaining wall hard enough to crack the hardshell bike helmet and came away without a scratch (on her head - she did get a bit of "road rash" elsewhere)- and most certainly would have suffered a concussion without it. The foam lining and hard plastic shell absorbed a LOT of impact. Sorry, but it's pretty clear that a broken or cracked helmet is not evidence of a prevented concussion. There are probably thousands of incidents of broken helmets per year; yet bike concussions have _risen_ tremendously since helmets became popular. Check out the article titled "Senseless" in _Bicycling_ magazine, June 2013. http://www.bicycling.com/sites/defau...-13-Helmet.pdf "Here’s the trouble. Stat #3: As more people buckled on helmets, brain injuries also increased. Between 1997 and 2011 the number of bike-related concussions suffered annually by American riders increased by 67 percent, from 9,327 to 15,546, according to the National Electronic Injury Surveillance System..." A broken helmet is evidence that helmets are very breakable. -- - Frank Krygowski The trouble is that the only way to make a safer helmet is to make one considerably larger. People would not buy them. |
#68
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Shimano Headset
On Sun, 14 May 2017 22:45:42 -0400, Frank Krygowski
wrote: On 5/14/2017 3:00 PM, wrote: My oldest daughter hit her head on a concrete retaining wall hard enough to crack the hardshell bike helmet and came away without a scratch (on her head - she did get a bit of "road rash" elsewhere)- and most certainly would have suffered a concussion without it. The foam lining and hard plastic shell absorbed a LOT of impact. Sorry, but it's pretty clear that a broken or cracked helmet is not evidence of a prevented concussion. There are probably thousands of incidents of broken helmets per year; yet bike concussions have _risen_ tremendously since helmets became popular. Check out the article titled "Senseless" in _Bicycling_ magazine, June 2013. http://www.bicycling.com/sites/defau...-13-Helmet.pdf We will have to agree to disagree. Only a fool would take extra risks just because he is wearing a helmet. "Here’s the trouble. Stat #3: As more people buckled on helmets, brain injuries also increased. Between 1997 and 2011 the number of bike-related concussions su?ered annually by American riders increased by 67 percent, from 9,327 to 15,546, according to the National Electronic Injury Surveillance System..." The reporting of concussions has gone up in ALL sports - because of a higher awareness and the fact there is better reporting systems in place. Relating increased concussions to helmet use is mis-applying the data - attributing a cause and effect where none exists. A broken helmet is evidence that helmets are very breakable. Actuaklly, hard shell foam helmets take quite a force to break. There is a lot of evidence that proves the value of a decent bicycle helmet in the event of an unavoidable crash |
#69
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Shimano Headset
On Sun, 14 May 2017 19:46:40 -0700 (PDT), wrote:
On Sunday, May 14, 2017 at 12:01:06 PM UTC-7, wrote: On Sun, 14 May 2017 07:42:40 -0700 (PDT), wrote: On Saturday, May 13, 2017 at 8:43:29 PM UTC-7, John B. Slocomb wrote: On Sat, 13 May 2017 13:05:08 -0700 (PDT), wrote: On Friday, May 12, 2017 at 9:57:35 PM UTC-7, John B. Slocomb wrote: On Fri, 12 May 2017 08:23:02 -0700 (PDT), Sir Ridesalot wrote: On Thursday, May 11, 2017 at 10:06:04 AM UTC-4, Joerg wrote: Snipped But then, to one who habitually uses a nail and a rock as a chain tool the use of proper tools is probably a mystery. Try to differentiate between an outdoors emergency situation and the workshop in the garage. It's not that difficult. - Regards, Joerg http://www.analogconsultants.com/ Which is hy mose of us carry a small tool repair kit that includes a chain-breaker. That way a broken chain isn't an ememrgency and a repair only takes a few seconds. After all seconds count when you're beig stalked by mountain lions or other hungry critters doesn't it? For someone who either breaks chains a lot or often comes across people with a broken chain (bother very rare where I ride even on the technical trails) it ONLY makes sense to have a chain breaker and spare link(s)and quick-link WITH YOU. To be honest using a rock and rusty nail to repair a chain in the field sounds like something an armchair bicyclist would think up. Such a repaired chain would most likely fail again after only a short distance. Believe it or not there's good reasons why chain breakers are used to fix a chain. Cheers Out of curiosity I weighed and measured the chain tool that I carry in my bike tool kit. It is 2-1/2 inches in length and 2-1/8 inches in height. 1/2 inch thick, at its thickest, and weighs 2.6 ounces. It works with chains up to and including 10 speed chains (I don't own an 11 speed). Frankly, as a broken chain immobilizes the bicycle I can see no logic in not carrying it. Since I have never once had a broken chain nor seen one I cannot see any requirement to carry such a tool. Yesterday I did 55 miles and 2500 feet of climbing with some of it pretty steep ~12%. There were fore of us there and the dirt encrusted on the bikes showed a certain lack of careful maintenance. No one had any problems. I have been carrying all these tools around for the last 6 years and the only one's I've used are the tire repair tools. Equally, I have had two crashes severe enough to break bones and in neither did my head strike the ground. Thus, based on your logic, there is no reason what so ever to wear a helmet. There is almost no reason to wear a helmet under any conditions. If a helmet was just barely able to protect me in a fall literally from 18" what makes you think that a helmet can do anything other than protect you from getting scratches on your head in a sideways fall at a dead stop? My oldest daughter hit her head on a concrete retaining wall hard enough to crack the hardshell bike helmet and came away without a scratch (on her head - she did get a bit of "road rash" elsewhere)- and most certainly would have suffered a concussion without it. The foam lining and hard plastic shell absorbed a LOT of impact. I would suggest that you don't understand the nature and causes of concussion. And that you don't understand the mechanics of impact. Where did you get a hardshell bicycle helmet? I don't know the age or weight of your child or what "retaining wall" means. Colliding and hitting your head in the forward lunge is NOT the same as falling off of your bike and taking the brunt of the collision with the ground on your head. Sorry, but you would be wrong. I understand that concussions are caused by the head decellerating too quickly, causing the brain to bruise or twist inside the skull. I also know that compressing an inch of foam can increase the time taken to slow the head to a stop - in actual testing, about an extra 6ms - which changes the effective impact significantly - reducing the peak impact force by more than half. It spreads the force over a longer time - reducing the decelleration. When I say Hard shell, I don't mean fiberglass - this was a fairly tough polypropelene shell - they were pretty common here in Ontario Canada 20 years ago. She was riding down a hill when the pedal broke and she lost control, veering into a retaining wall made of bags of cement which was used to stabilize a steep bank beside the road (the road is in a "cut") She came off the bike sideways, hitting her head on the wall, and also hitting her shoulder. Helmets protect against impacts whether caused by the acceleration of gravity in a fall, are due to forward velocity (which CAN be much higher than a strictly gravitational fall from about 4 feet) Lots of information that does not support the interpretation of increased injuries due to helmet use here. http://www.helmets.org/stats.htm Also you need to talk to paramedics and emergency room physicians. You will get a different story than Frank's. |
#70
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Shimano Headset
On Sun, 14 May 2017 22:47:00 -0400, Frank Krygowski
wrote: On 5/14/2017 10:04 PM, wrote: On Mon, 15 May 2017 08:54:22 +0700, John B. Any safety equipment that is not overly intrusive is worth using ??? Really?? OK, do you wear a bike helmet when driving to the start of a bike ride? I wear my bike helmet whenever I ride my bike(s) If you mean when in my car, don't be stupid. I guess I have to stipulate any "appropriate" safety equipment. In my car (which has a colapsible steering column, air bags, and seat belts) I wear my seat belts. When driving my motorcycle I always wore an approved helmet and good shoes/boots. I would NEVER ride in shorts and tee-shirt wearing flip-flops or tennis shoes. I also won't mow the lawn barefoot, or use a grinder without safety glasses, or weld without goggles. To do otherwise is shear stupidity. |
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