| |
Main
Date: 21 Dec 2004 12:59:12
From:
Subject: Stupid? Stroke of genius? Somewhere in between?
|
Hi all,
here's my latest idea waiting to be shot down in flames.
I was doing some DIY the other day and ended up using a can of that
expanding foam stuff (can you see where this is going). It expands a
hell of a lot and is quite firm when set.
So I got to wondering. Wheel - tire - can of foam. Do I have the
ingredients for a cheap puncture proof wheel? There seems to be a bit
of give in the set foam so it will not be a high pressure feel to it
but maybe some sort of an off road thing - maybe suitable for a
trailer perhaps?
Any feelings on the idea. Any yes - I would give it a try but I can't
even get out to put my new wheel on since my wife had an accident. I
may have time in the summer and give it a go then, if no one has a
reason why not to.
Everso
|
|
| |
Date: 21 Dec 2004 18:12:03
From: Ken the Troll
Subject: Re: Stupid? Stroke of genius? Somewhere in between?
|
If you want a puncture proof tire, I remember a bike rental place up on
Mackinac Island, where horseshoe nails cause a lot of flats, was
putting a piece of milker hose (the hose that carries milk from the
teet cups to the pipe line that takes the fresh milk to the tank)
inside of tires, thus making them puncture proof (but also heavy).
Pressurized air still seems to be the lightest material to fill the
void in the tire and keep it ridgid enough to reduce rolling resistance
to the minimum. Personally, I don't mind the little extra weight from
liners, I use Mr. Tuffy, but I wouldn't want the extra weight of foam
or milker hose (or something similar). If I remember correctly, the
first rubber tires were solid rubber and Mr. Goodyears' pneumatic tires
were such an improvement that no one in the auto industry ever
considered going back to slolid rubber tires, even though the air
filled tires could go flat from time to time.
|
| | |
Date: 21 Dec 2004 21:10:45
From: Tom Sherman
Subject: Re: Stupid? Stroke of genius? Somewhere in between?
|
Ken the Troll wrote:
> If you want a puncture proof tire, I remember a bike rental place up on
> Mackinac Island, where horseshoe nails cause a lot of flats, was
> putting a piece of milker hose (the hose that carries milk from the
> teet cups to the pipe line that takes the fresh milk to the tank)
> inside of tires, thus making them puncture proof (but also heavy).
> Pressurized air still seems to be the lightest material to fill the
> void in the tire and keep it ridgid enough to reduce rolling resistance
> to the minimum. Personally, I don't mind the little extra weight from
> liners, I use Mr. Tuffy, but I wouldn't want the extra weight of foam
> or milker hose (or something similar). If I remember correctly, the
> first rubber tires were solid rubber and Mr. Goodyears' pneumatic tires
> were such an improvement that no one in the auto industry ever
> considered going back to slolid rubber tires, even though the air
> filled tires could go flat from time to time.
Charles Goodyear invented vulcanized rubber in 1844. The is no
connection between him and the Goodyear Tire and Rubber Company, other
than it choosing his name because of its association with his work in
developing rubber manufacturing processes.
John Dunlop patented the first pneumatic bicycle tire in 1888. However,
Robert Thomson received the first patent for a pneumatic tire in 1845.
The first pneumatic automotive tires were made by André Michelin in 1895.
--
Tom Sherman
|
| |
Date: 21 Dec 2004 08:28:34
From: skip
Subject: Re: Stupid? Stroke of genius? Somewhere in between?
|
<reply@spam.co.uk > wrote in message
news:pg7gs0pml2qg2kpo6negd98jvcd0enacq5@4ax.com...
> Hi all,
>
> here's my latest idea waiting to be shot down in flames.
>
> I was doing some DIY the other day and ended up using a can of that
> expanding foam stuff (can you see where this is going). It expands a
> hell of a lot and is quite firm when set.
>
> So I got to wondering. Wheel - tire - can of foam. Do I have the
> ingredients for a cheap puncture proof wheel? There seems to be a bit
> of give in the set foam so it will not be a high pressure feel to it
> but maybe some sort of an off road thing - maybe suitable for a
> trailer perhaps?
>
> Any feelings on the idea. Any yes - I would give it a try but I can't
> even get out to put my new wheel on since my wife had an accident. I
> may have time in the summer and give it a go then, if no one has a
> reason why not to.
>
> Everso
Everso, if I were to guess I would say you would end up with a really messy
flat tire, but there is only one way to know for sure and that's give it a
go. Please report back on the extent of the mess. I'd really like to hear
about this.
Hope your wife is better soon.
skip
|
| |
Date: 21 Dec 2004 13:44:46
From: Peter Clinch
Subject: Re: Stupid? Stroke of genius? Somewhere in between?
|
reply@spam.co.uk wrote:
> here's my latest idea waiting to be shot down in flames.
> So I got to wondering. Wheel - tire - can of foam. Do I have the
> ingredients for a cheap puncture proof wheel?
Yes, but...
The "but" is you're certainly not the first person to have this idea,
and every implementation I've heard people talk about to date has been
rather less satisfactory than a good pneumatic tyre and the occasional
faff to fix a puncture in it.
There are useful niches for them, but they don't involve typical riders
on typical roads.
Pete.
--
Peter Clinch Medical Physics IT Officer
Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
net p.j.clinch@dundee.ac.uk http://www.dundee.ac.uk/~pjclinch/
|
| | |
Date: 21 Dec 2004 19:15:43
From: Tom Sherman
Subject: Re: Stupid? Stroke of genius? Somewhere in between?
|
Peter Clinch wrote:
> reply@spam.co.uk wrote:
>
>> here's my latest idea waiting to be shot down in flames.
>
>
>> So I got to wondering. Wheel - tire - can of foam. Do I have the
>> ingredients for a cheap puncture proof wheel?
>
>
> Yes, but...
>
> The "but" is you're certainly not the first person to have this idea,
> and every implementation I've heard people talk about to date has been
> rather less satisfactory than a good pneumatic tyre and the occasional
> faff to fix a puncture in it.
>
> There are useful niches for them, but they don't involve typical riders
> on typical roads....
Are you saying us wheelbarrow and industrial lift truck operators are
not typical?
--
Tom Sherman
|
|
