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#11
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2 punctures in one ride
Geoff Lock wrote:
Might have a read of what others say elsewhere about solids. Anybody in this newsgroup who has used solids and cares to impart some life experiences? Sheldon Brown said this: "Airless tires have been obsolete for over a century, but crackpot "inventors" keep trying to bring them back. They are heavy, slow and give a harsh ride. They are also likely to cause wheel damage, due to their poor cushioning ability." http://sheldonbrown.com/tires.html John |
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#12
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2 punctures in one ride
On 16/06/2011 2:31 AM, Geoff Lock wrote:
On 15/06/2011 9:50 PM, Rob wrote: On 15/06/2011 4:46 AM, Geoff Lock wrote: I think I'll rip off the tyres from me other bike .... should have done that in the first place... hhmmmm... Solid tyres should fix that problem! Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams Better than pushing your bike home! Might have a read of what others say elsewhere about solids. Anybody in this newsgroup who has used solids and cares to impart some life experiences? At one stage the water board had rubber rings about 1"dia to seal the watermain pipes, off hand the 20" (or the like) did fit tightly when stretched on the rim - it doesn't take much increase in circumference to expand to 700 or 27" rims. |
#13
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2 punctures in one ride
Geoff Lock wrote:
Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams at one stage a few decades ago someone promoted the idea of filling the tyre with expanding foam. The idea being no punctures. Major problem was low speed limitations, like 30kms/hr. i suspect the other problem was recovery cycles were too low as I never saw it on the market. |
#14
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2 punctures in one ride
terryc wrote:
Geoff Lock wrote: Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams at one stage a few decades ago someone promoted the idea of filling the tyre with expanding foam. The idea being no punctures. Major problem was low speed limitations, like 30kms/hr. i suspect the other problem was recovery cycles were too low as I never saw it on the market. used to fill them with grass during the depression. |
#15
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2 punctures in one ride
On 16/06/2011 6:11 AM, Zebee Johnstone wrote:
In aus.bicycle on Thu, 16 Jun 2011 02:31:23 +1000 Geoff Lockglock@home wrote: On 15/06/2011 9:50 PM, Rob wrote: On 15/06/2011 4:46 AM, Geoff Lock wrote: I think I'll rip off the tyres from me other bike .... should have done that in the first place... hhmmmm... Solid tyres should fix that problem! Might have a read of what others say elsewhere about solids. Anybody in this newsgroup who has used solids and cares to impart some life experiences? The ones on my single speed coaster brake 20" bike had big chunks out of them without seeming to cause any problems, and that bike went down steps OK. Yeah, solids take punishment. I did find when graduating to a big girl's bike (still a single speed but with big wheels and pump up tyres) that it was faster and more comfortable, but that might also have been the bigger wheels and the sprung saddle. Would also probably depend on the tyre pressures too, I guess. Wasn't as good at riding down steps though. Heheheheh! Bloody pneumatics |
#16
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2 punctures in one ride
On 16/06/2011 6:36 AM, John Henderson wrote:
Geoff Lock wrote: Might have a read of what others say elsewhere about solids. Anybody in this newsgroup who has used solids and cares to impart some life experiences? Sheldon Brown said this: "Airless tires have been obsolete for over a century, but crackpot "inventors" keep trying to bring them back. They are heavy, slow and give a harsh ride. They are also likely to cause wheel damage, due to their poor cushioning ability." http://sheldonbrown.com/tires.html Hm, I did have some of me own "crackpot" ideas until I read Sheldon Brown's comments. I am not sure when Brown wrote that article but maybe there is some kinda new magicky foam which is hard on the outside and goes progressively softer towards the middle or something like that. Notwithstanding the above magic foam, Brown's further comments seem to present a challenge to ANY foam tyre, ie " .. a pneumatic tire uses all of the air in the whole tube as a shock absorber, while foam-type "airless" tires/tubes only use the air in the immediate area of impact." |
#17
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2 punctures in one ride
On 16/06/2011 12:04 PM, Rob wrote:
On 16/06/2011 2:31 AM, Geoff Lock wrote: On 15/06/2011 9:50 PM, Rob wrote: On 15/06/2011 4:46 AM, Geoff Lock wrote: I think I'll rip off the tyres from me other bike .... should have done that in the first place... hhmmmm... Solid tyres should fix that problem! Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams Better than pushing your bike home! Heheheh!! Given the frigging weight of some solid forklift tyres, I'll push me bike home, thanks Might have a read of what others say elsewhere about solids. Anybody in this newsgroup who has used solids and cares to impart some life experiences? At one stage the water board had rubber rings about 1"dia to seal the watermain pipes, off hand the 20" (or the like) did fit tightly when stretched on the rim - it doesn't take much increase in circumference to expand to 700 or 27" rims. Hm, but those rings will probably be quite dense and hard right thru and will probably produce that "harsh" ride mentioned by Sheldon Brown's article in the link posted by John Henderson above. But if one was stuck out in the bush with a flat tyre with no spares and miles from nowhere, I guess one WOULD wish for a solid tyre - harsh ride or no harsh ride |
#18
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2 punctures in one ride
On 16/06/2011 12:54 PM, terryc wrote:
Geoff Lock wrote: Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams at one stage a few decades ago someone promoted the idea of filling the tyre with expanding foam. The idea being no punctures. Major problem was low speed limitations, like 30kms/hr. i suspect the other problem was recovery cycles were too low as I never saw it on the market. Recovery cycles? Not sure what you mean there. |
#19
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2 punctures in one ride
On 16/06/2011 1:02 PM, F Murtz wrote:
terryc wrote: Geoff Lock wrote: Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams at one stage a few decades ago someone promoted the idea of filling the tyre with expanding foam. The idea being no punctures. Major problem was low speed limitations, like 30kms/hr. i suspect the other problem was recovery cycles were too low as I never saw it on the market. used to fill them with grass during the depression. Hey and make good compost at the same time, eh? |
#20
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2 punctures in one ride
Geoff Lock wrote:
On 16/06/2011 12:54 PM, terryc wrote: Geoff Lock wrote: Hm, now that you mentioned them, I had a google and, of cos, they are available. I have always known of solid tyres on forklifts and those solid forklift tyres weigh more than a few grams at one stage a few decades ago someone promoted the idea of filling the tyre with expanding foam. The idea being no punctures. Major problem was low speed limitations, like 30kms/hr. i suspect the other problem was recovery cycles were too low as I never saw it on the market. Recovery cycles? Not sure what you mean there. When the foam s at the bottom it gets squashed. on the way up it expands, just like in an air filled tyre. If it doesn't, you end up with flat tyres. Recovery cycles or number of revs in the life of the foam. |
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