Tubbies vs Clinchers: Punctures

[Red Zone]

There is a school of thought that tubbies allow a higher pressure which flicks glass and stuff away, whereas a clincher at lower pressure conforms around the puncture causing object thus allowing it to pierce the tyre.

[Dr. Seuss]

 

 

moenie die tubbies so hard pomp nie - 110psi is die max wat jy moet gaan as jy onder 70kg weeg.

 

onhou dat rolling resistance is eintlik groter hoe harder jy pomp omdat die wiel meer sukkel om te conform tot die teer (of chipseal op ons paaie!)

 

die van die ZIPP website af - kyk onder die support FAQ's:

 

Higher pressure is definitely slower on anything other than perfect

surfaces. Think of it in terms of a bunch of 1mm tall bumps in the

road. If you have a lower tire pressure, the casing of the tire will

deflect over each bump (we'll assume the casing deflects the entire

1mm) converting a small amount of energy into heat as the casing

deflects, but the amount of energy necessary to compress the air is

almost non-existent. Now at a higher pressure, we will assume that the

tire deflects half as much. Now the bike and rider are lifted by 0.5mm

and the casing deflects by .5mm, the energy necessary to deflect the

casing by .5mm is less than it takes to deflect it by 1mm, but is

nothing compared to the amount of energy necessary to lift the bike and

rider by 0.5mm, so the end result is that the total energy requirement

for the high tire pressure condition is much greater.

 

The other thing that

happens is that on smoother roads, high tire pressures keep the casing

from deforming over and into small cracks and crevices and over

pebbles, which means that some of the deflection is transferred into

the tire tread, which is not as elastic as the casing. Excessive tire

wear comes about as the tire rubber begins to fail in shear as it is

deformed by the road surface, and this generates heat as well as breaks

down the cross-linking within the tread material.... overall, you are

using more energy to go slower and you're wearing your tires out

faster. The problem is that high tire pressures feel fast as your body

perceives all the high frequency vibrations from the road surface as

being faster than a smooth ride.

 

 

 

 

 

[Canaris]

Pumtures.  mmm

THE first step to get them is to cycle over glass or thorn or rock.

Second step is that sharp point needs to get through the tyre to the tube.

 

So do tubes or climches puncture more?  Now how does the manner that a tyre is connected to a rim affect its rubber side?  It does not. 

 

So the question needs to be rephrased. 

 

It is common knowledge that tubes have thinner inner tubes, so when a sharp point gets through the tyre it will have a greater chance of puncturing the latex or thin tube in a tubby, than the thicker tube used in a clincher.

 

It is commonly accepted that tubbies have less rubber (racing tyre) than a conventional clincher (so on a theoretical scale they are diferent in more than one way)  So it is easier for glass ext to penetrate the tyre on a tubbie.

 

Lastly, with the tubbie used in a race where the focus is on racing and not riding, tubbies may be handled harsher than clinchers on a training ride.

 

So do tubbies puncture more:

 

Yes if you accept that clinchers are treated with more care, are more robust tyres, and have thicker tubes in them than tubbies.

but

if you compare apples with apples then the means of connection with the rim should not make a difference in the punctures.

[Spinnekop]

There is a school of thought that tubbies allow a higher pressure which flicks glass and stuff away' date=' whereas a clincher at lower pressure conforms around the puncture causing object thus allowing it to pierce the tyre.[/quote']

 

I know about that school........and the children attending it is failing miserably!!!!!!!!

[Spinnekop]

moenie die tubbies so hard pomp nie - 110psi is die max wat jy moet gaan as jy onder 70kg weeg.

onhou dat rolling resistance is eintlik groter hoe harder jy pomp omdat die wiel meer sukkel om te conform tot die teer (of chipseal op ons paaie!)

die van die ZIPP website af - kyk onder die support FAQ's:

 

Not THIS makes sence.....

 

Dankie dok.

 

I pump the tubbies nothing less than 12 bar.  Vittorias are suppose to be able to go up toe 14.

 

So if I bring it down to 9?

mmmm.....

 

 

[Spinnekop]

Pumtures.  mmm

THE first step to get them is to cycle over glass or thorn or rock.

Second step is that sharp point needs to get through the tyre to the tube.

 

So do tubes or climches puncture more?  Now how does the manner that a tyre is connected to a rim affect its rubber side?  It does not. 

 

So the question needs to be rephrased. 

 

It is common knowledge that tubes have thinner inner tubes' date=' so when a sharp point gets through the tyre it will have a greater chance of puncturing the latex or thin tube in a tubby, than the thicker tube used in a clincher.

 

It is commonly accepted that tubbies have less rubber (racing tyre) than a conventional clincher (so on a theoretical scale they are diferent in more than one way)  So it is easier for glass ext to penetrate the tyre on a tubbie.

 

Lastly, with the tubbie used in a race where the focus is on racing and not riding, tubbies may be handled harsher than clinchers on a training ride.

 

So do tubbies puncture more:

 

Yes if you accept that clinchers are treated with more care, are more robust tyres, and have thicker tubes in them than tubbies.

but

if you compare apples with apples then the means of connection with the rim should not make a difference in the punctures.

[/quote']

 

O hell Kona.....you can get lost within a second....

Knowing me like you do......do you really think that I don't know that the way the tyre is attached to the rim makes absolutely NO difference to puncture resistance.

 

I was and still am talking about a TUBBIE......the tyre......not the rim. .....tyre Kona.....tyre......a Tubbie TYRE!!!!!!!!!!!

 

So to "compare apples to apples" tubbie TYRE to a clincher TYRE....

Happy now?

Or still lost?????

 

USELESS!!!!

 

 

[Fork-it]

Maar Spidey, was dit nie jy wat 'n opmerking gemaak het toe ek en Gman staan en tjoops ruil by Zwartkop nie...blinde sambok...

 

Ouch, nie nice om te hoor van die puncture nie, hoop die emosionele scars heal gou.

[Canaris]

Pumtures.  mmm

THE first step to get them is to cycle over glass or thorn or rock.

Second step is that sharp point needs to get through the tyre to the tube.

 

So do tubes or climches puncture more?  Now how does the manner that a tyre is connected to a rim affect its rubber side?  It does not. 

 

So the question needs to be rephrased. 

 

It is common knowledge that tubes have thinner inner tubes' date=' so when a sharp point gets through the tyre it will have a greater chance of puncturing the latex or thin tube in a tubby, than the thicker tube used in a clincher.

 

It is commonly accepted that tubbies have less rubber (racing tyre) than a conventional clincher (so on a theoretical scale they are diferent in more than one way)  So it is easier for glass ext to penetrate the tyre on a tubbie.

 

Lastly, with the tubbie used in a race where the focus is on racing and not riding, tubbies may be handled harsher than clinchers on a training ride.

 

So do tubbies puncture more:

 

Yes if you accept that clinchers are treated with more care, are more robust tyres, and have thicker tubes in them than tubbies.

but

if you compare apples with apples then the means of connection with the rim should not make a difference in the punctures.

[/quote']

 

O hell Kona.....you can get lost within a second....

Knowing me like you do......do you really think that I don't know that the way the tyre is attached to the rim makes absolutely NO difference to puncture resistance.

 

I was and still am talking about a TUBBIE......the tyre......not the rim. .....tyre Kona.....tyre......a Tubbie TYRE!!!!!!!!!!!

 

So to "compare apples to apples" tubbie TYRE to a clincher TYRE....

Happy now?

Or still lost?????

 

USELESS!!!!

 

 

 

Okay, if the tyre of a tubbie is the same as the tyre of a clincher, there should be no difference in tyre protection aganist punctures.  But we know that in reality tubbie tyres tend to be more  "racing" tyres and thus less "protected" than clinchers