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#21
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Gaping hole in tire
On 2008-09-24, _ wrote:
On Tue, 23 Sep 2008 21:12:23 -0500, Tom Sherman wrote: ? wrote: [...] This is the thing you would be looking for http://www.parktool.com/products/det...17&item=TB%2D2 or perhaps here https://www.sluggergifts.com/zgifts - maybe splurge and get both.[...] An aluminium alloy bat can be swung faster, so it will transfer more energy to the target. Are you sure? Despite the v^2 term, the source of the enrgy remains the same (the swinger's muscles) and (aside from the negligable quantum effects), if the swinger puts all that he can into the object, If the bat is too light he may not be able to put as much energy in-- you can only move your arms so fast. which then stops and puts all that it has into the recipient, the means of transport from swinger to recipient should not matter. The bat only stops when it hits the ball if it's the right mass (assuming it's you always strike with the same part of the bat and hold it the same way). If the bat is too massive, it will keep going after it hits the ball. If it's not massive enough, it will bounce back off the ball. So you want one that's just right, subject to being heavy enough that you can get enough energy into it in the first place. |
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#22
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Gaping hole in tire
On Tue, 23 Sep 2008 23:14:18 +0200, Alexandre Kampouris
wrote: Yes, it was a Marathon Plus indeed, but the difference in weight is not that huge, I just tested two brand new tires hanging in equilibrium from on a kitchen scale placed at the corner of a table: 37-622 Marathon Plus: 967 g 37-622 Marathon : 679 g As stated earlier, I'm actually quite satisfied with the standard grade Marathons, and I don't see any reason to change, as they never gave me any particular trouble which could lead me to seek an alternative. Likewise. I'd *much* prefer to fix one or two punctures a year than to drag all that extra weight around. My latest bike had tires like yours as a default offering, IIRC. I preferred sticking with the devil I knew. What's the point of using a wider tire? The 40s are limited to 5 bars instead of 6, isn't it? They were on the bike (a Fahrradmanufaktur T700) when I bought it, but like you, I prefer narrower tyres. On my hack bike ("die Bahnhofsgurke") I have 37mm Schwalbes (the ordinary ones) and on my road bike 23mm Vittorias. Opinions do vary though - some say that the wider 40mm tyres give a more cushioned ride, for hardly any increase in rolling resistance. I only bought another one so as to keep the same size on front and rear wheels, although in practice, it probably doesn't make the slightest bit of difference. I had to put one on a rear wheel in August of last year, to replace a tyre which had become irreparably damaged. I was in Arnstadt that day, and no-one there had "normal" Marathons, only the "Plus". I took it off when I got home, though. Did you ride all the way to/from home through the Harz Mountains? I have been a couple of times to Wernigerode and Halberstadt, but on that trip, I circumvented the Harz by going: Braunschweig== Magdeburg== Bernburg== Köthen== Halle== Weißenfels== Jena == Weimar== Arnstadt== Gotha== Eisenach and back. It gets pretty hilly around Jena, though - at one point I noted 440m above sea level. Last week I made my first multiple-day bike trip in Lower Saxony. The landscape was not at all difficult, albeit a bit windy. I had only ever made day trips before, at home or away, but had never actually used the bike as THE means of transportation between places. It was an intensely satisfying experience, and I really regret not having tried it earlier. Lower Saxony's a good starting point, as apart from the Elm and the Deister, it's just so flat. Can get windy, though, as you noted. Tomorrow I'm off to InnoTrans. I haven't made any plans this year - I'll be in Berlin on Friday for other business, and may have the chance to drop in on Innotrans for an hour or so, but I'm not counting on it. Any chance you could post a brief report on fmtr? I'm sure there must be many others who'd be interested but don't have the possibility to get there. |
#23
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Gaping hole in tire
Andrew Price wrote:
I have been a couple of times to Wernigerode and Halberstadt, but on that trip, I circumvented the Harz by going: Braunschweig== Magdeburg== Bernburg== Köthen== Halle== Weißenfels== Jena == Weimar== Arnstadt== Gotha== Eisenach and back. It gets pretty hilly around Jena, though - at one point I noted 440m above sea level. The Saale valley looks very beautiful to me. Do you have camping equipment, or do you sleep indoors? I haven't made any plans this year - I'll be in Berlin on Friday for other business, and may have the chance to drop in on Innotrans for an hour or so, but I'm not counting on it. Any chance you could post a brief report on fmtr? I'm sure there must be many others who'd be interested but don't have the possibility to get there. I now tend to hang more around icf, because of the persistent static level originating from Random Q. Crosspost and fiends, but I still lurk. I'll nevertheless try to write a summary of my outsider's observations in the coming days. The Big Canadian Conglomerate had the best locations outdoors, and very high visibility, to the point that I didn't immediately realize that the AGV on display wasn't part of their exhibit. But then I noticed that it was the record setting manufacturer which was attracting the crowds, with dozens of people waiting more than one half hour just to have a peek inside its latest offering. (I gave up after 15-20 minutes, and the queue had barely moved). I returned today for the second and last time, and I have visitors until Sunday, so be patient. Alexandre |
#24
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Gaping hole in tire
Glue canvas on the inside with puncture solution. As long as it's not
on the contact part of the tyre, this will nearly always last the life of the tyre. If the cut is big, you can sew the cut first with dental floss or carpet thread. I've often done this. |
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