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#1
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loose chain guard with defect plastic bar to hold it
The other day there was a bike with a loose
chain guard. The chain guard is plastic but to my surprise there weren't nuts and bolts but instead two slots thru the plastic, each ~1.3 cm long and 0.5 cm wide. What attached into them slots was a plastic bar with a hook at each end, with the plastic bar between the rim and the chain guard, attached to the midpoint, integrated (?) with the crank somehow. What had happened is, one of them hooks had been broken by the bar and was gone. So with the tension gone from below the upper hook also lost its grip even tho it is still there, and the bar had rotated a couple of cm out of position. With a rubber hammer, I hit the bar into position. Then I drilled two holes, one at each end. Into that hole and the slots I inserted cable ties to seal it at both endpoints. I don't know if it is a good idea, but it seemed to work for the moment at least. Do you recognize this situation and as I'm sure you do, what is the correct way to deal with it? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 34 Blogomatic articles - |
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#2
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loose chain guard with defect plastic bar to hold it
On Thu, 19 May 2016 12:42:24 +0200, Emanuel Berg
wrote: The other day there was a bike with a loose chain guard. The chain guard is plastic but to my surprise there weren't nuts and bolts but instead two slots thru the plastic, each ~1.3 cm long and 0.5 cm wide. What attached into them slots was a plastic bar with a hook at each end, with the plastic bar between the rim and the chain guard, attached to the midpoint, integrated (?) with the crank somehow. What had happened is, one of them hooks had been broken by the bar and was gone. So with the tension gone from below the upper hook also lost its grip even tho it is still there, and the bar had rotated a couple of cm out of position. With a rubber hammer, I hit the bar into position. Then I drilled two holes, one at each end. Into that hole and the slots I inserted cable ties to seal it at both endpoints. I don't know if it is a good idea, but it seemed to work for the moment at least. Do you recognize this situation and as I'm sure you do, what is the correct way to deal with it? From your description it sounds as though you replaced a "plastic bar" with some "plastic cable ties". Pretty much returning things to their original condition. -- cheers, John B. |
#3
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loose chain guard with defect plastic bar to hold it
John B. writes:
From your description it sounds as though you replaced a "plastic bar" with some "plastic cable ties". Pretty much returning things to their original condition. To some extent - the plastic cable ties are thinner but perhaps better suited to "roll with the punches"... But let's say I restored it - is that good or bad, given that it failed? -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 34 Blogomatic articles - |
#4
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loose chain guard with defect plastic bar to hold it
On Thu, 19 May 2016 14:27:34 +0200, Emanuel Berg
wrote: John B. writes: From your description it sounds as though you replaced a "plastic bar" with some "plastic cable ties". Pretty much returning things to their original condition. To some extent - the plastic cable ties are thinner but perhaps better suited to "roll with the punches"... But let's say I restored it - is that good or bad, given that it failed? I would say that was pretty much up to you to decide. I would comment that not all bicycles are equipped with chain guards and people seem ride bicycles either with or without chain guards. I never, for example, heard anyone say "Oh! I can't ride that bike. Why it doesn't have a chain guard." -- cheers, John B. |
#5
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loose chain guard with defect plastic bar to hold it
John B. writes:
I would comment that not all bicycles are equipped with chain guards and people seem ride bicycles either with or without chain guards. I never, for example, heard anyone say "Oh! I can't ride that bike. Why it doesn't have a chain guard." Maybe there is another bike culture in your country (?) perhaps because of different weather, here, with snow, and water that turns into ice, virtually all bikes have chain guards and if a bike doesn't come with one this would be associated with sport, some dude trying to cut a couple of hundred grams or whatever is the weight of a chain guard. Also the typical person doesn't wear wellies and doesn't want to be bothered putting the sock in and out each time. I also suppose the chain lube disappears more quickly without it, especially if rain, tho I don't think this is anything the typical person considers... -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 34 Blogomatic articles - |
#6
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loose chain guard with defect plastic bar to hold it
On 5/19/2016 10:28 PM, Emanuel Berg wrote:
John B. writes: I would comment that not all bicycles are equipped with chain guards and people seem ride bicycles either with or without chain guards. I never, for example, heard anyone say "Oh! I can't ride that bike. Why it doesn't have a chain guard." Maybe there is another bike culture in your country (?) perhaps because of different weather, here, with snow, and water that turns into ice, virtually all bikes have chain guards and if a bike doesn't come with one this would be associated with sport, some dude trying to cut a couple of hundred grams or whatever is the weight of a chain guard. In the U.S., an astonishing percentage of bicycles would be considered by Europeans to be more suitable for "sport" than anything else. And indeed, very little bike use here is for anything else. Even many (or most?) of the small percentage of Americans who use bikes for utility seem to pick something that looks like a "sport" machine. That's just the way it is here. I'd bet fewer than 1% of adult American bikes have chain guards. None of mine do. -- - Frank Krygowski |
#7
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loose chain guard with defect plastic bar to hold it
Phil W Lee writes:
If you want to see an average European bicycle, look at the bike parks at railway stations with thousands of spaces where average cyclists park their bikes on the way to or from work. ... Look at the Netherlands, Denmark, Belgium, Luxembourg, and increasingly the UK, France, Germany, Sweden, and Norway (by no means a complete list) to see what proportion of bikes are sporting cycles when cycling really has become mass personal transportation The railway station is the best example. It is as much a bicycle graveyard as a marketplace for bums. But all over the city are thousands and thousands of bikes: at the commercial center, the hospital, all buildings associated with the universtity (both educaion and where the students live), and so on. There are people working with marking half-crashed bikes as abandoned and if they aren't moved at a certain date, they are disposed of - otherwise the whole city would drown in wrecked bikes! There are 410 km [1] of bicycle paths in this city of 187 541 people. [2] [1] (Swedish) https://www.uppsala.se/contentassets...2013-tryck.pdf [2] https://en.wikipedia.org/w/index.php...&printable=yes -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 36 Blogomatic articles - |
#8
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loose chain guard with defect plastic bar to hold it
On Fri, 20 May 2016 04:28:05 +0200, Emanuel Berg
wrote: John B. writes: I would comment that not all bicycles are equipped with chain guards and people seem ride bicycles either with or without chain guards. I never, for example, heard anyone say "Oh! I can't ride that bike. Why it doesn't have a chain guard." Maybe there is another bike culture in your country (?) perhaps because of different weather, here, with snow, and water that turns into ice, virtually all bikes have chain guards and if a bike doesn't come with one this would be associated with sport, some dude trying to cut a couple of hundred grams or whatever is the weight of a chain guard. Also the typical person doesn't wear wellies and doesn't want to be bothered putting the sock in and out each time. No one uses a "bicycle Clip" :-) I also suppose the chain lube disappears more quickly without it, especially if rain, tho I don't think this is anything the typical person considers... I'm not sure what sort of chain guard you are talking about but the ones I am envisioning are a sort of inverted "L" with the short arm sticking down in the front and these aren't going to give much, if any, protection to the chain to keep it from getting dirty. -- cheers, John B. |
#9
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loose chain guard with defect plastic bar to hold it
John B. writes:
I also suppose the chain lube disappears more quickly without it, especially if rain, tho I don't think this is anything the typical person considers... I'm not sure what sort of chain guard you are talking about but the ones I am envisioning are a sort of inverted "L" with the short arm sticking down in the front and these aren't going to give much, if any, protection to the chain to keep it from getting dirty. Here is a photo of a typical standard bike. I don't like dynamos, and the rear wheel lacks a reflex, other than that it looks pretty good including the chain guard. http://user.it.uu.se/~embe8573/photos/standard.jpg By the way, I said I would count the bikes - it turns out, I am the proud owner of 74 standard bikes and 10 MTBs. The 74 standard bikes should all have chain guards, and if they don't, it is only because some of them are decades from their prime -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 37 Blogomatic articles - |
#10
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loose chain guard with defect plastic bar to hold it
John B. writes:
Also the typical person doesn't wear wellies and doesn't want to be bothered putting the sock in and out each time. No one uses a "bicycle Clip" :-) Most people don't wear *helmets*! And this is because men think they are "yet are another thing to keep track of" and women think that as well but they might have aesthetic concerns as well... Here, people just use bikes, they are not into them, and couldn't care less for extra gear and equipment... In a way that is perhaps a healthy attitude as they have other things on their minds, but I'd definitely recommend the use of a helmet just like people should use one when they play ice hockey (not the same helmet of course). -- underground experts united .... http://user.it.uu.se/~embe8573 Emacs Gnus Blogomatic ......... http://user.it.uu.se/~embe8573/blogomatic - so far: 37 Blogomatic articles - |
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