#1
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Shimano Headset
http://www.yellowjersey.org/photosfr...ast/hp6207.jpg
-- Andrew Muzi www.yellowjersey.org/ Open every day since 1 April, 1971 |
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#2
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Shimano Headset
On 2017-05-09 17:39, AMuzi wrote:
http://www.yellowjersey.org/photosfr...ast/hp6207.jpg In the lower picture you can see what I mentioned in another thread: Fixed wrenches, in contrast to adjustable ones, are always larger than the nuts. Have to be in order to account for tolerances. So they never grab cleanly which will wear the nut over time and also ding it. Some people are very particular about the appearance of their ride for whatever reason. What helps against cosmetic nut damage is to stick Kapton tape on the wrench insides or the nut. I place it onto the wrenches because then I can use it over and over again. -- Regards, Joerg http://www.analogconsultants.com/ |
#3
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Shimano Headset
Joerg wrote:
In the lower picture you can see what I mentioned in another thread: Fixed wrenches, in contrast to adjustable ones, are always larger than the nuts. Have to be in order to account for tolerances. So they never grab cleanly which will wear the nut over time and also ding it. Well... doesn't any wrench has to be bigger than the nut in order to grab it? Adjustable tools doesn't offer a tighter grip. Even if it could in theory just feel the part that is adjustable - you can almost always ruck it back and forth, just a bit but nonetheless. Also the adjustable wrench is often used in a careless manner. People don't adjust it to perfection before they pull! No, fixed keys are the best and in particular the ring side (closed end) of the combination spanner as that pulls on all sides of a hex bolt or nut. -- underground experts united http://user.it.uu.se/~embe8573 |
#4
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Shimano Headset
Tape ! Buy an undersized wrench n grind to fit. This dId not occur to you ?
Grinding insures the part is obsolete in one year |
#5
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Shimano Headset
On 2017-05-10 14:41, Emanuel Berg wrote:
Joerg wrote: In the lower picture you can see what I mentioned in another thread: Fixed wrenches, in contrast to adjustable ones, are always larger than the nuts. Have to be in order to account for tolerances. So they never grab cleanly which will wear the nut over time and also ding it. Well... doesn't any wrench has to be bigger than the nut in order to grab it? Adjustable tools doesn't offer a tighter grip. They sure do, provided you have a good one and not one from the local discounter. Even if it could in theory just feel the part that is adjustable - you can almost always ruck it back and forth, just a bit but nonetheless. Yes, but that sliver is much smaller than with a regular sized fixed wrench. Also the adjustable wrench is often used in a careless manner. People don't adjust it to perfection before they pull! Ya well, if people use them as hammers and such the work result will usually show it. No, fixed keys are the best and in particular the ring side (closed end) of the combination spanner as that pulls on all sides of a hex bolt or nut. For most situations I use fixed wrenches but not when if has to be super snug. However, as I said I have a few really high-quality adjustable wrenches. The smaller cheaper ones are more for emergencies. -- Regards, Joerg http://www.analogconsultants.com/ |
#6
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Shimano Headset
On Wednesday, May 10, 2017 at 6:19:24 PM UTC-4, Joerg wrote:
On 2017-05-10 14:41, Emanuel Berg wrote: Joerg wrote: In the lower picture you can see what I mentioned in another thread: Fixed wrenches, in contrast to adjustable ones, are always larger than the nuts. Have to be in order to account for tolerances. So they never grab cleanly which will wear the nut over time and also ding it. Well... doesn't any wrench has to be bigger than the nut in order to grab it? Adjustable tools doesn't offer a tighter grip. They sure do, provided you have a good one and not one from the local discounter. Even if it could in theory just feel the part that is adjustable - you can almost always ruck it back and forth, just a bit but nonetheless. Yes, but that sliver is much smaller than with a regular sized fixed wrench. Also the adjustable wrench is often used in a careless manner. People don't adjust it to perfection before they pull! Ya well, if people use them as hammers and such the work result will usually show it. No, fixed keys are the best and in particular the ring side (closed end) of the combination spanner as that pulls on all sides of a hex bolt or nut. For most situations I use fixed wrenches but not when if has to be super snug. However, as I said I have a few really high-quality adjustable wrenches. The smaller cheaper ones are more for emergencies. -- Regards, Joerg http://www.analogconsultants.com/ If adjustable wrenches are so dang great then why do repair shops spend thousands of dollars on wrenches designed to fit the fastener? Cheers |
#7
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Shimano Headset
Joerg wrote:
Even if it could in theory just feel the part that is adjustable - you can almost always ruck it back and forth, just a bit but nonetheless. Yes, but that sliver is much smaller than with a regular sized fixed wrench. Perhaps the size of the nut is of importance here. For example, with adjustable wrenches when you pull a small item it sometimes happens that item gets tilted and stuck in the wrench. This never happened to me with the fixed sizes. But it is logical that adjustable wrenches pull tighter so at some level of quality and carefull work they should surpass anything fixed... In practice, on a typical bike. Say 8 and 10 mm for details. 13 for the saddle and 14 or 15 for the dome nuts. If you leave any normal person with this bike and fixed keys the work will be many times as good and much faster. Remember, it is not just pulling, it is also HOLDING while pulling at the same time. -- underground experts united http://user.it.uu.se/~embe8573 |
#8
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Shimano Headset
On Wed, 10 May 2017 15:41:23 -0700 (PDT), Sir Ridesalot
wrote: On Wednesday, May 10, 2017 at 6:19:24 PM UTC-4, Joerg wrote: On 2017-05-10 14:41, Emanuel Berg wrote: Joerg wrote: In the lower picture you can see what I mentioned in another thread: Fixed wrenches, in contrast to adjustable ones, are always larger than the nuts. Have to be in order to account for tolerances. So they never grab cleanly which will wear the nut over time and also ding it. Well... doesn't any wrench has to be bigger than the nut in order to grab it? Adjustable tools doesn't offer a tighter grip. They sure do, provided you have a good one and not one from the local discounter. Even if it could in theory just feel the part that is adjustable - you can almost always ruck it back and forth, just a bit but nonetheless. Yes, but that sliver is much smaller than with a regular sized fixed wrench. Also the adjustable wrench is often used in a careless manner. People don't adjust it to perfection before they pull! Ya well, if people use them as hammers and such the work result will usually show it. No, fixed keys are the best and in particular the ring side (closed end) of the combination spanner as that pulls on all sides of a hex bolt or nut. For most situations I use fixed wrenches but not when if has to be super snug. However, as I said I have a few really high-quality adjustable wrenches. The smaller cheaper ones are more for emergencies. -- Regards, Joerg http://www.analogconsultants.com/ If adjustable wrenches are so dang great then why do repair shops spend thousands of dollars on wrenches designed to fit the fastener? Cheers Actually wrenches and nuts and bolts aren't designed so that the wrench is a press fit onto the fastener since that would mean that in order to fit the wrench to the fastener it would have to be in perfect alignment. Hardly practical in a working environment. Nor is some mythical "perfect fit" necessary as fasteners are designed to be tightened or loosened using conventional tools and the size of the hexagon head or nut provides sufficient flat length to avoid the wrench slipping and rounding the corners. In fact, using conventional wrenches it is quite easy to actually break the shank of a fastener without damaging the head at all. 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. -- Cheers, John B. |
#9
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Shimano Headset
John B. wrote:
In fact, using conventional wrenches it is quite easy to actually break the shank of a fastener without damaging the head at all. Fixed wrenches do not damage the head. They are faster, more reliable and more ergonomic than adjustable wrenches and I dare say they pull tighter or as tight in practice, using them all day long. It is possible in a test lab for a single bolt it is possible to show an adjustable wrench pulls tighter but in practice it is actually the adjustable wrench that will round the corners as the mechanic will get tired and make mistakes. And one source of him/her getting tired will be having to adjust the wrench all the time -- underground experts united http://user.it.uu.se/~embe8573 |
#10
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Shimano Headset
On Thu, 11 May 2017 10:47:10 +0200, Emanuel Berg
wrote: John B. wrote: In fact, using conventional wrenches it is quite easy to actually break the shank of a fastener without damaging the head at all. Fixed wrenches do not damage the head. They are faster, more reliable and more ergonomic than adjustable wrenches and I dare say they pull tighter or as tight in practice, using them all day long. It is possible in a test lab for a single bolt it is possible to show an adjustable wrench pulls tighter but in practice it is actually the adjustable wrench that will round the corners as the mechanic will get tired and make mistakes. And one source of him/her getting tired will be having to adjust the wrench all the time There used to be a "rule of thumb" to always use an adjustable wrench so that the force is against the fixed jaw. I have proved this rule myself. I was squatting down tightening the bolts that held a large vise to a bench. The wrench didn't fit in its proper orientation so I flipped it over and pushed against the movable jaw. I proved, at least to my own satisfaction, that (1) an adjustable wrench used in this manner will slip, and (2) a broken nose Hurts! -- Cheers, John B. |
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