Tyre Pressure

Quoted message said:

Quoted message said:

Quoted message said:

Knobblies are great in their place, which is on soft and particularly on
muddy surfaces. They are useless on hard surfaces.

Quoted message said:

Speaks a man who hasn't ridden in serious dust:-)

Errr, "dust" and "hard surface" the same thing? Really?

Speaks a man who hasn't read what he's replying to ...

[hint, read on and you see the reply refers to the first
sentence, not the second].

--
Nick Kew

in message <[email hidden]>, Nick Kew

(') said:

Simon Brooke said:

Knobblies are great in their place, which is on soft and particularly
on muddy surfaces. They are useless on hard surfaces.

Speaks a man who hasn't ridden in serious dust:-)

Before living in Italy, I saw no great use for knobblies. Yes, they
are
a little bit easier than touring tyres on mud and wet grass. But it's
still perfectly manageable on a road touring tyres.

In Italy, with the long hot dry summers, what in the UK (or Italian
winter) is mud becomes ultra-fine dust. That's where road tyres are
totally and utterly lost, and knobblies are really necessary.

Last time I looked dust was a soft surface... Oh, BTW, I still haven't
got round to despatching your Sun box. If you haven't got it by Thursday
phone be up and pester me.

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

;; For in much wisdom is much grief; and he that increaseth
;; knowledge increaseth sorrow.." - Ecclesiastes 1:18

Nick Kew said:

Speaks a man who hasn't read what he's replying to ...

[hint, read on and you see the reply refers to the first
sentence, not the second].

Ummmm...

Well, I actually did read it, have read it again, and can't see any
particular reason to respond to a comment about knobblies being
useless on hard stuff with the above. Maybe I'm slow today... if
you'd explain, please?

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 [email hidden] http://www.dundee.ac.uk/~pjclinch/

Peter Clinch said:

Nick Kew said:

Speaks a man who hasn't read what he's replying to ...

[hint, read on and you see the reply refers to the first
sentence, not the second].

Ummmm...

Well, I actually did read it, have read it again, and can't see any
particular reason to respond to a comment about knobblies being useless
on hard stuff with the above. Maybe I'm slow today... if you'd explain,
please?

<AOL>

Me too!

</AOL>

--
Tony

"I did make a mistake once - I thought I'd made a mistake but I hadn't"
Anon

"Keith Willoughby" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Mac said:

How about these?

http://tinyurl.com/bvjds [Schwalbe City Jets]

[...]

Quoted message said:

Good deal? Two tyres and two inner tubes.

I like mine. I think I pump mine up to 80 PSI, and no punctures and
little wear in 800 miles or so.

--
Keith Willoughby http://flat222.org/keith/

They're narrower than my existing tyres, 1.95 v 1.5, will I notice any
difference?

Woady

Mac said:

"Keith Willoughby" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Mac said:

How about these?

http://tinyurl.com/bvjds [Schwalbe City Jets]

[...]

Quoted message said:

Good deal? Two tyres and two inner tubes.

I like mine. I think I pump mine up to 80 PSI, and no punctures and
little wear in 800 miles or so.

They're narrower than my existing tyres, 1.95 v 1.5, will I notice any
difference?

No, not really.

Be sure to keep them pumped up, though. They have thin sidewalls, and
the ride gets very uncertain when the pressure goes down. This isn't a
knock on them, just something to keep in mind.

--
Keith Willoughby http://flat222.org/keith/
"I'll have ten Kit Kats and a motoring atlas"

Simon Brooke said:

in message <[email hidden]>, Nick Kew

(') said:

Simon Brooke said:

Knobblies are great in their place, which is on soft and particularly
on muddy surfaces. They are useless on hard surfaces.

Speaks a man who hasn't ridden in serious dust:-)

Last time I looked dust was a soft surface...

Guess I must've been unclear.

The clause with which I took issue was "and particularly on muddy
surfaces". I was trying to point out that dust presents a far more
extreme case of requiring knobblies than any mud.

--
Nick Kew

Keith Willoughby wrote:

[schwalbe city jets]

Quoted message said:

Quoted message said:

Quoted message said:

> Good deal? Two tyres and two inner tubes.

I like mine. I think I pump mine up to 80 PSI, and no punctures and
little wear in 800 miles or so.

They're narrower than my existing tyres, 1.95 v 1.5, will I notice any
difference?

No, not really.

Be sure to keep them pumped up, though. They have thin sidewalls, and
the ride gets very uncertain when the pressure goes down. This isn't a
knock on them, just something to keep in mind.

I have a pair of these on the tandem (they were on my commuter bike
till I swapped them for some Nokian AWS). Excellent tyre. I run them at
about 90psi and they perform really well. Some complain of grip
problems in greasy conditions but I haven't found this at all.

They seem to be pretty puncture resistant - I've not had a single
puncture in several thousand miles on them and the wear is almost
non-existant.

You won't be disappointed (unless you want pretty pictures on your
tyres)

...d

"David Martin" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

I have a pair of these on the tandem (they were on my commuter bike
till I swapped them for some Nokian AWS). Excellent tyre. I run them at
about 90psi and they perform really well. Some complain of grip
problems in greasy conditions but I haven't found this at all.

They seem to be pretty puncture resistant - I've not had a single
puncture in several thousand miles on them and the wear is almost
non-existant.

You won't be disappointed (unless you want pretty pictures on your
tyres)

..d

I've bought a set of City Jets with tubes 🙂 Thought I'd better get them now
rather than end up buying something else.

Woady

Mac said:

They're narrower than my existing tyres, 1.95 v 1.5, will I notice any
difference?

Bit less rolling resistance and noise and, errr, that's about it.
Aside from you may notice yourslef slapping your forehead inna
Homer stylee wondering why you didn't change to road tyres some
time ago...

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 [email hidden] http://www.dundee.ac.uk/~pjclinch/

Nick Kew said:

Simon Brooke said:

in message <[email hidden]>, Nick Kew

(') said:

Simon Brooke wrote:

>Knobblies are great in their place, which is on soft and particularly
>on muddy surfaces. They are useless on hard surfaces.

Speaks a man who hasn't ridden in serious dust:-)

Last time I looked dust was a soft surface...

Guess I must've been unclear.

The clause with which I took issue was "and particularly on muddy
surfaces". I was trying to point out that dust presents a far more
extreme case of requiring knobblies than any mud.

You were unclear. I'd not be so sure that dust as you describe is more
problematic for slicks than mud.
Definitely interesting on the cornering, but on mud you won't even be
able to get that fast that cornering would be a problem [1].

...d

[1] On one occasion in a land far north from here, I got the road bike
out to go for a ride. Having discovered that I couldn't even keep it
upright long enough to get on it, let alone ride it, I put it away and
took the MTB with studded tyres as the black ice was too severe to even
contemplate riding. The ice was almost completely invisible.

Interesting thread...

Does anyone use the setup suggested by Sheldon Brown for an offroad
tyre (or combo) on the front and a smooth on the rear?

I do about 75%-25% on road - off road, but some of the offroad is
quite sandy. Currently on knobblies.

Am wondering about the effectiveness of mix and match..

regards

-Rob

< Unless you are riding off road on loose surfaces, knobblies actually
give you less security. To quote the Sheldon Brown bible: ...... >

Thanks for the above and other comments. The fact is that I live in a
small rural town in New Zealand and much of my riding is done on gravel
or poorly maintained roads. Hills abound but the self-preservation
instinct seems to heighten with advancing years and I doubt that loss
of traction at downhill cornering on the sealed sections will be a
problem. At my age the buzz comes from getting to the top of the hills
and not from speeeding down the other side at 60 mph+ :-))

However, I appreciate that the point has to be made if only for others
who may read these posts

"Rob" <[email hidden]> wrote

Quoted message said:

Interesting thread...

Does anyone use the setup suggested by Sheldon Brown for an offroad
tyre (or combo) on the front and a smooth on the rear?

I do about 75%-25% on road - off road, but some of the offroad is
quite sandy. Currently on knobblies.

Am wondering about the effectiveness of mix and match..

For sand, size matters to spread the load and stop the tyres sinking in.
Light tread useful but knobbles not required. Conti TT2000 1.75" are good
candidates.

David Martin said:

You were unclear. I'd not be so sure that dust as you describe is more
problematic for slicks than mud.

Exactly. You haven't ridden on it.

Quoted message said:

Definitely interesting on the cornering, but on mud you won't even be
able to get that fast that cornering would be a problem [1].

On the mud I can move forward. On the dust I simply couldn't.

Quoted message said:

[1] On one occasion in a land far north from here, I got the road bike
out to go for a ride. Having discovered that I couldn't even keep it
upright long enough to get on it, let alone ride it, I put it away and
took the MTB with studded tyres as the black ice was too severe to even
contemplate riding. The ice was almost completely invisible.

I've lived and travelled extensively in Scandinavia too.

--
Nick Kew

"Rob" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Interesting thread...

Does anyone use the setup suggested by Sheldon Brown for an offroad
tyre (or combo) on the front and a smooth on the rear?

I do about 75%-25% on road - off road, but some of the offroad is
quite sandy. Currently on knobblies.

Am wondering about the effectiveness of mix and match..

Interesting. When I was little (ok, maybe not little, but young) I rode to
school. One day it snowed, and I borrowed my dad's XC wheel for the back. It
was the one day of the year I was able to beat my mate - I had traction, and
he didn't.

Rather more recently we had a jolly couple of hours at Delamere Forest - us
on our MTB tandem, him on his road bike with some slightly fatter but still
slick tyres. Fortunately it was dry, otherwise I reckon he would have
suffered quite a lot.

cheers,
clive

brigodon said:

< Unless you are riding off road on loose surfaces, knobblies actually
give you less security. To quote the Sheldon Brown bible: ...... >

Thanks for the above and other comments. The fact is that I live in a
small rural town in New Zealand and much of my riding is done on gravel
or poorly maintained roads. Hills abound but the self-preservation
instinct seems to heighten with advancing years and I doubt that loss
of traction at downhill cornering on the sealed sections will be a
problem. At my age the buzz comes from getting to the top of the hills
and not from speeeding down the other side at 60 mph+ :-))

However, I appreciate that the point has to be made if only for others
who may read these posts

In no small part as this is UK.rec.cycling, not NZ.rec.cycling!

--
Tony

"I did make a mistake once - I thought I'd made a mistake but I hadn't"
Anon

Nick Kew said:

Quoted message said:

[1] On one occasion in a land far north from here, I got the road bike
out to go for a ride. Having discovered that I couldn't even keep it
upright long enough to get on it, let alone ride it, I put it away and
took the MTB with studded tyres as the black ice was too severe to even
contemplate riding. The ice was almost completely invisible.

I've lived and travelled extensively in Scandinavia too.

Fun isn't it ;-) Studded tyres on sheet ice are a lot of fun.

...d

in message <[email hidden]>, Tony Raven

(') said:

brigodon said:

< Unless you are riding off road on loose surfaces, knobblies
actually
give you less security. To quote the Sheldon Brown bible: ...... >

Thanks for the above and other comments. The fact is that I live in a
small rural town in New Zealand and much of my riding is done on
gravel or poorly maintained roads.

In no small part as this is UK.rec.cycling, not NZ.rec.cycling!

Which is not to say that denizens of the antipodes are unwelcome in these
parts, nor that poorly maintained roads are a unique or distinctive
feature of the antipodes...

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

'Victories are not solutions.'
;; John Hume, Northern Irish politician, on Radio Scotland 1/2/95
;; Nobel Peace Prize laureate 1998; few have deserved it so much

Simon Brooke said:

Which is not to say that denizens of the antipodes are unwelcome in these
parts,

Indeed, I've been here for a couple of years now and I've not been
kill-filed for my residential preferences. Yet. (although having served my
URC apprenticeship for serveral years at home in the UK may have lulled
people into a false sense of security/tolerance).

Graeme