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#11
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Mounting Vittoria Randonneur on Alex Rims ACE-17
landotter wrote:
On Sep 28, 6:16 pm, wrote: someone wrote: Thanks to Dan O and landotter. Lubricant and full inflation did the job. Keep in mind that after you've mounted up a set of tires a few times, they get progressively easier. The IRCs and Panaracer tires on my geared and fixed gear bikes don't need much of a lever to get them on any more--I mainly carry them for charity work. I have not had that experience and have been riding only clinchers, mainly steel bead-wire ones. Even the Kevlar bead tires did not do that on my wheels, neither kind of tire having a plastically deformable bead strand. It has nothing to do with the wire strands, the casing fabric simply breaks in with use. Also, any loose molding material that makes mounting a PITA gets sloughed off after a few mountings. What loose molding material is changing. My tires have a wear strip on the bead where it contacts the rim and this wear strip has not worn through. I think you might show a photo of the worn area to explain how this affects tire mounting. Did your imagination take a hike? I know engineers can construct mental models, so you're quite capable of imagining what the frilly rubber overflow on a tire bead from the molding process looks like on a slightly cheaper tire, and how it could create friction impeding the mounting of a tire, and how easily it could be sheared off by a tire lever. BUT--what you're doing--despite your professional credentials, is nothing less than internet trolling, because you're a dick. actually, i think he's losing it with old age. much of his ramblings here lately are either incoherent or rooted so far in the past that it's clear he's living there, not here. as for "professional credentials", those are more a product of him telling you he has them rather than demonstrated ability. his book and "faq"'s are so full of fundamental errors, it's just a joke. he's excellent at self-promotion though - hence people believe him when he /tells/ them he's an engineer. those of us that know a little about engineering however look at things like his tensiometer math not accounting for spoke stiffness or his spoke load calculation being misconstrued as wheel strength calculation and we wonder how he keeps a straight face. |
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#12
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Mounting Vittoria Randonneur on Alex Rims ACE-17
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#13
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Mounting Vittoria Randonneur on Alex Rims ACE-17
On Sep 28, 10:00 pm, jim beam wrote:
landotter wrote: On Sep 28, 6:16 pm, wrote: someone wrote: Thanks to Dan O and landotter. Lubricant and full inflation did the job. Keep in mind that after you've mounted up a set of tires a few times, they get progressively easier. The IRCs and Panaracer tires on my geared and fixed gear bikes don't need much of a lever to get them on any more--I mainly carry them for charity work. I have not had that experience and have been riding only clinchers, mainly steel bead-wire ones. Even the Kevlar bead tires did not do that on my wheels, neither kind of tire having a plastically deformable bead strand. It has nothing to do with the wire strands, the casing fabric simply breaks in with use. Also, any loose molding material that makes mounting a PITA gets sloughed off after a few mountings. What loose molding material is changing. My tires have a wear strip on the bead where it contacts the rim and this wear strip has not worn through. I think you might show a photo of the worn area to explain how this affects tire mounting. Did your imagination take a hike? I know engineers can construct mental models, so you're quite capable of imagining what the frilly rubber overflow on a tire bead from the molding process looks like on a slightly cheaper tire, and how it could create friction impeding the mounting of a tire, and how easily it could be sheared off by a tire lever. BUT--what you're doing--despite your professional credentials, is nothing less than internet trolling, because you're a dick. actually, i think he's losing it with old age. much of his ramblings here lately are either incoherent or rooted so far in the past that it's clear he's living there, not here. as for "professional credentials", those are more a product of him telling you he has them rather than demonstrated ability. his book and "faq"'s are so full of fundamental errors, it's just a joke. he's excellent at self-promotion though - hence people believe him when he /tells/ them he's an engineer. those of us that know a little about engineering however look at things like his tensiometer math not accounting for spoke stiffness or his spoke load calculation being misconstrued as wheel strength calculation and we wonder how he keeps a straight face. I really don't know **** about bikes, though I post here a lot, to be honest--but what I do know--is that you have to pretend that you do and acknowledge fake cred before whupping out the dick card. That is how purple vein comedy is done my friends. |
#14
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Mounting Vittoria Randonneur on Alex Rims ACE-17
On Sep 28, 5:35 am, A Muzi wrote:
landotter wrote: On Sep 28, 5:14 am, wrote: I am trying to remount a Vittoria Randonneur tire on an Alex Rims ACE-17, and I cannot get it to mount evenly, in a circle all the way around. The whitewall dips several millimeters toward the rim in one or two places, which results in a bumpy ride. Can anybody help? I have those rims on my fixed gear and have mounted various Vittoria tires on several models of Alex rims--they get along great! Just mount as usual, then only inflate a little bit at a time, perhaps 10psi, and use your hands to help seat the bead in the rim--it really should be a quite easy tire to mount on that rim. You can also try rubbing a little soap from a dry bar on the bead of the tire, or even a bit of silicon spray--it will help the bead just slwoopdoing into place. You mentioned silicone spray just because datakoll is back, yes? Personally, I would have preferred to have rubbed a Spanish mackerel along the bead, but we do have a complicated system of honorifics at r.b.t. |
#15
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Mounting Vittoria Randonneur on Alex Rims ACE-17
On Sep 27, 4:14*pm, wrote:
I am trying to remount a Vittoria Randonneur tire on an Alex Rims ACE-17, and I cannot get it to mount evenly, in a circle all the way around. The whitewall dips several millimeters toward the rim in one or two places, which results in a bumpy ride. Can anybody help? I suspect the tire might have to fit into a ridge in the rim, but I cannot see how to do that and keep it properly positioned while inflating the tube. The wheel and tire are part of a Novara Fusion I bought from REI, and it came without manuals for the wheel or tire. I also cannot find useful information atwww.alexrims.comorwww.vittoria.com. I do not think it is relevant, but here is some history: The bike is new. I deflated both tubes, installed Slime, and reinflated them. The front wheel has been fine. After struggling with the rear wheel, I took it to a local shop. A week later, it got a flat. That is the second time this has happened with that shop, on different bikes. Each time, upon opening the tire, I found the tube had been installed with a zig-zag near the valve stem as if to take up slack, and, each time, the tube had ruptured in that area. No more business for that shop! I replaced the tube, and that is where I am now, trying to inflate the tube and get the tire mounted properly. Did you tell the people in the shop what had happened, and get a new tube, with slime, and a correct install for the money you already paid? If they weasel, walk. Sounds like that tire went on that rim at one point. Yes? Problem started when slime was installed? The tubes are a good fit in your tires-- the largest tube that will fit inside the tire when slightly inflated, not too big? (Or too small so that it has to stretch thin, in the interest of longevity). Sounds like the bead of the tire isn't seating in the hooked bead of the rim. The rim strip might be in the way, or the tube might be getting in the way. You can move a tire (tube totally uninflated) back and forth to see if the tube is getting between the tire and rim; you shouldn't see any tube when the tire is in place. Starting with tire off rim (after careful inspection for the second piece of glass or wire after finding the first culprit) I usually put a little air in the tube to get it to hold shape while I get the valve in straight, then mount the tire (from both sides from the valve), keeping the tube in the tire as much as possible, no pinching between tire and rim. When the tire gets tight, I let the air out, keep the tire beads as close together as possible (to take the shortest line around the "spoke bed" of the rim) and making sure the tube is in the tire (not showing), pop the tire in place. Check again to see there is no tube showing between tire (bead) and rim, inflate while making sure the tire beads are seating in the rim bead. If the tire isn't seating, note the location, let all the air out, look in there (sometimes a tire lever is a good poker) and you will likely see the tube has somehow wandered where it shouldn't be g and that's why the tire bead can't seat. Or the tire is only marginally "correct"; I had a cheap Conti that had a bad bead on it. http://www.parktool.com/repair/readhowto.asp?id=100 http://www.sheldonbrown.com/flats.html Someone showed me a neat trick. Use three tire levers, two next to each other, the third a short distance away-- especially when dealing with a tight tire, the doubled levers help make that first lift. I carry four in case one breaks g. --D-y |
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