Tyre Rolling Resistance

[dev null]

OK, for the Argus I took off my Kenda Kriteriums and replaced it with GatorSkins to have some better puncture resistance. Nobody wants a puncture on a race. I usually pump the Kriteriums to 9 bar and the GatorSkins to 10 bar.

 

I do however think that the rolling resistance on the GatorSkins are higher than for the Kriteriums. Am I imagining it or what. Which other tyre will give good puncture resistance but have a low rolling resistance? Or am I looking for the holy grail here?

 

I currently have Easton EA70 clinchers. My weight is 78kg.

Edited May 16, 2012 by Moridin

[patches]

Geesh! I didn't know there ws that big a difference between skinny-bike tyres?!

 

Ignorant mtber me thought they were all much of a muchness

[RudoJ]

Geesh! I didn't know there ws that big a difference between skinny-bike tyres?!

 

Ignorant mtber me thought they were all much of a muchness

wearing full lycra will definitely lessen your rolling resistance as well.....

Btw we met briefly at the one Spruit ride, I asked if u are Patches from the Hub

[patches]

wearing full lycra will definitely lessen your rolling resistance as well.....

Btw we met briefly at the one Spruit ride, I asked if u are Patches from the Hub

 

yup! that was me (on the green Cannondale)... no lycra worn that day

[Let's Ride]

More rolling resistance and a fairly heavy tire. Any race tyre will roll nicely but costs a bit more and will be lighter which means less tyre?

 

It's a trade off.

Edited May 16, 2012 by PA HIRE

[Clinton - theCOW]

How many punctures do you normally get, avg in a year over how many km's? In about a 12 month period, i've had maybe 3, yes punctures in races are crappy but a proper piece of glass or staple will go thru any tyre? Thought more people run the other way around, heavy puncture proof tyres for training, light fast stuff for races.

 

Gators are suppose to be bullet proof & with that you have more material = weight, i've been riding GP4000's and they are softer, esp the side walls, even then i've only had 1 puncture in a race in Sept and that ended up being the valve to tube join.

 

Other thing is why pump to 9 & 10 bar when "most" tyres are pressure rated to 120psi (yes i've seen 10bar clinchers)? The slightly harder tyre may mean less contact as well so less umpfffff? As a norm, i run at 7bar front, 7.5 back, i'm round 65kg's. Tubbies i run @ 8 & 8.5bar.

 

Also with the bigger races with full closure, ride in the car tyre line most the time, it's cleaner & % chance of punctures are less.

 

Sure if you google rolling resistance and tyres etc there'll be a website with RR stats & %'s

[Johan Bornman]

OK, for the Argus I took off my Kenda Kriteriums and replaced it with GatorSkins to have some better puncture resistance. Nobody wants a puncture on a race. I usually pump the Kriteriums to 9 bar and the GatorSkins to 10 bar.

 

I do however think that the rolling resistance on the GatorSkins are higher than for the Kriteriums. Am I imagining it or what. Which other tyre will give good puncture resistance but have a low rolling resistance? Or am I looking for the holy grail here?

 

I currently have Easton EA70 clinchers. My weight is 78kg.

 

Rolling resistance is directly linear to tyre and tube thickness. Unfortunately, puncture resistance is also directly linear to tyre and tube thickness. There's the dilemma. You can't have your cake and eat it.

[dev null]

Thats why I commented that I am probably looking for the holy grail here.

[petatodd]

Conti Grand Prix Attack, lower rolling resistance than Gatorskin, no punctures in 6 years. Touch wood.

['Dale]

I run Schwalbe Ultremo DD on one of my wheelsets.

Light. Strong.

[Cycling Major]

How many punctures do you normally get, avg in a year over how many km's? In about a 12 month period, i've had maybe 3, yes punctures in races are crappy but a proper piece of glass or staple will go thru any tyre? Thought more people run the other way around, heavy puncture proof tyres for training, light fast stuff for races.

 

Gators are suppose to be bullet proof & with that you have more material = weight, i've been riding GP4000's and they are softer, esp the side walls, even then i've only had 1 puncture in a race in Sept and that ended up being the valve to tube join.

 

Other thing is why pump to 9 & 10 bar when "most" tyres are pressure rated to 120psi (yes i've seen 10bar clinchers)? The slightly harder tyre may mean less contact as well so less umpfffff? As a norm, i run at 7bar front, 7.5 back, i'm round 65kg's. Tubbies i run @ 8 & 8.5bar.

 

Also with the bigger races with full closure, ride in the car tyre line most the time, it's cleaner & % chance of punctures are less.

 

Sure if you google rolling resistance and tyres etc there'll be a website with RR stats & %'s

 

Just one question??? Why would more psi (Meaning less contact) give less "ummpfff"... The harder your tyres are pumped the less contact you have and thus less rolling resistance? Thats logic!!!

[Johan Bornman]

Just one question??? Why would more psi (Meaning less contact) give less "ummpfff"... The harder your tyres are pumped the less contact you have and thus less rolling resistance? Thats logic!!!

What are the units of measurement of "ummpfff"...

Edited May 16, 2012 by Johan Bornman

[Johan Bornman]

Conti Grand Prix Attack, lower rolling resistance than Gatorskin, no punctures in 6 years. Touch wood.

Anecdotal.

 

Example: Buy a Golf. My car now has 100000kms on the clock and I've never hit a cow.

[gummibear]

Nobody wants a puncture on a race. I usually pump the Kriteriums to 9 bar and the GatorSkins to 10 bar.

 

Why on earth do you pump them to 10 bar when the rims can't handle that pressure?

I am sure that max pressure on GS is around 9 bar.Maybe you should try getting some tubbies

[Cycling Major]

What are the units of measurement of "ummpfff"...

 

I have no idea...!!! Quoted it from the above mentioned post

[Let's Ride]

Too high a pressure and you bounce over everything.

 

I had tubbies and used to pump them up to 170 psi, what a stupid thing for me to do. 115psi at the front and 120psi at the rear works for me, weight 82 kg's.