Interesting finds around the web
#1027
Senior Member
I assume you are talking about the Giro shoe.
Maybe the design is to get around patents that other shoe companies use. I agree it is complicated and also ugly with the two dangling straps.
Maybe the design is to get around patents that other shoe companies use. I agree it is complicated and also ugly with the two dangling straps.
#1029
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#1031
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Maybe tweet to her and ask her here: https://twitter.com/AlydaNorbruis
Last edited by carleton; 09-10-16 at 11:46 PM.
#1032
Lapped 3x
I think it's a stupid design. There's little velcro to secure the laces, so if you have narrow feet, can you trim the laces down to make sure that enough of the velcro still engages? At least with most velcro straps you can trim the overhang and still have a decent amount of interface. How do you swap out the lace/strap if you damage the lace?
#1033
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My guess is that it's one of those, "We gotta make something 'new' every year so let's throw something together." type of things.
Cycling shoes are a mature system. They've been around for a long time. There is only so much you can do to improve them.
On the other hand, if you offer the same shoes for several years and the other guy is offering the "X-9000 shoes with Xylophan Carbon Nanomachine Technology", then you know a significant number of people will buy from the other guy. The cycling economy is based on that.
Proof: Put the average local/regional crit racer on some above average equipment from 15 years ago (like 105) and their performance will not decline.
Cycling shoes are a mature system. They've been around for a long time. There is only so much you can do to improve them.
On the other hand, if you offer the same shoes for several years and the other guy is offering the "X-9000 shoes with Xylophan Carbon Nanomachine Technology", then you know a significant number of people will buy from the other guy. The cycling economy is based on that.
Proof: Put the average local/regional crit racer on some above average equipment from 15 years ago (like 105) and their performance will not decline.
#1034
Senior Member
New USA men's hour record set by Tom Zirbel
Zirbel sets new US Hour Record | Cyclingnews.com
Beat most of the recent hour record holders except Wiggins. But Zirbel's attempt was at 1,888 metres elevation.
Zirbel sets new US Hour Record | Cyclingnews.com
Beat most of the recent hour record holders except Wiggins. But Zirbel's attempt was at 1,888 metres elevation.
#1035
Lapped 3x
Too bad for the timing. If he had the condition to do it last year his mark would've got him a World Hour Record notation. Still an exceptional performance for Tom! Congrats on a well deserved mark.
#1036
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#1037
aka mattio
#1038
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#1039
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I know someone posted about the Revolution Series on FB live, but you can replay it as well. Great way to spend a lazy Sunday!
https://m.facebook.com/story.php?sto...id=59088097633
https://m.facebook.com/story.php?sto...id=59088097633
#1040
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I'll be interested to hear reactions when someone gets their hands on Vittoria's new track tires:
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
#1041
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I'll be interested to hear reactions when someone gets their hands on Vittoria's new track tires:
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
#1042
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I'm more interested in independent substantiation of the rolling resistance and durability. But I'm happy to see that they're continuing to invest in updating track tires.
#1043
Full Member
The construction doesn't suggest they should be much different than current tires. And clinchers won't go above about 130psi because the rim design can't handle it.
I'm more interested in independent substantiation of the rolling resistance and durability. But I'm happy to see that they're continuing to invest in updating track tires.
I'm more interested in independent substantiation of the rolling resistance and durability. But I'm happy to see that they're continuing to invest in updating track tires.
#1044
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#1045
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Vittoria Open Corsa G+ : 145 PSI
and
Conti Grand Prix Supersonic: 170 PSI
In light of stats like the above, I contacted Velocity (the rim maker) and asked them about high pressures in tires. The tech rep said something to the effect of, "The rim can handle any pressure the clincher is rated for."
I ran 160psi in my Tufo Tubular-Clinchers (which is a closed tubular with a bead attached). They are rated for up to 175PSI as well.
#1046
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Vittoria Diamante Pro Pista Clincher tire
160psi
https://www.velodromeshop.net/index.php?p=product&id=2015
160psi
https://www.velodromeshop.net/index.php?p=product&id=2015
#1047
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Veloflex Record Clincher max 145 psi
Vittoria Open Corsa G+ : 145 PSI
and
Conti Grand Prix Supersonic: 170 PSI
In light of stats like the above, I contacted Velocity (the rim maker) and asked them about high pressures in tires. The tech rep said something to the effect of, "The rim can handle any pressure the clincher is rated for."
I ran 160psi in my Tufo Tubular-Clinchers (which is a closed tubular with a bead attached). They are rated for up to 175PSI as well.
Vittoria Open Corsa G+ : 145 PSI
and
Conti Grand Prix Supersonic: 170 PSI
In light of stats like the above, I contacted Velocity (the rim maker) and asked them about high pressures in tires. The tech rep said something to the effect of, "The rim can handle any pressure the clincher is rated for."
I ran 160psi in my Tufo Tubular-Clinchers (which is a closed tubular with a bead attached). They are rated for up to 175PSI as well.
2) Not everyone is going to use Deep Vs.
3) No surprise tire makers would see a competitive advantage to advertising higher pressures - they're not on the hook if the rim fails. What matters is the lesser of the tire and rim.
4) But most importantly, I worry that not everyone will treat something they read here about tire pressure as specific to a certain track wheel setup. A number of Mavic and Zipp clinchers (including the comete road, super-9, 404, 808...) are rated for 110-125 psi. There is an aviation saying about operating an aircraft outside of its limitations: you may get away with it, but you should understand that you're now an unpaid test pilot.
If you're just trying to construct a specific exception to what I wrote, go ahead and have at it. But if by posting a bunch of tire specs and relating a conversation you mean for people to generalize that it's okay to just blindly pump clinchers up to the tire's max pressure, it's bad advice.
#1048
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1) I wonder if Velocity as a company would want to adopt that position, if they understood that potentially means 175 psi and they're dependent on someone else's specifications. You got a tech's (hopefully informed) response, not an engineering specification.
2) Not everyone is going to use Deep Vs.
3) No surprise tire makers would see a competitive advantage to advertising higher pressures - they're not on the hook if the rim fails. What matters is the lesser of the tire and rim.
4) But most importantly, I worry that not everyone will treat something they read here about tire pressure as specific to a certain track wheel setup. A number of Mavic and Zipp clinchers (including the comete road, super-9, 404, 808...) are rated for 110-125 psi. There is an aviation saying about operating an aircraft outside of its limitations: you may get away with it, but you should understand that you're now an unpaid test pilot.
If you're just trying to construct a specific exception to what I wrote, go ahead and have at it. But if by posting a bunch of tire specs and relating a conversation you mean for people to generalize that it's okay to just blindly pump clinchers up to the tire's max pressure, it's bad advice.
2) Not everyone is going to use Deep Vs.
3) No surprise tire makers would see a competitive advantage to advertising higher pressures - they're not on the hook if the rim fails. What matters is the lesser of the tire and rim.
4) But most importantly, I worry that not everyone will treat something they read here about tire pressure as specific to a certain track wheel setup. A number of Mavic and Zipp clinchers (including the comete road, super-9, 404, 808...) are rated for 110-125 psi. There is an aviation saying about operating an aircraft outside of its limitations: you may get away with it, but you should understand that you're now an unpaid test pilot.
If you're just trying to construct a specific exception to what I wrote, go ahead and have at it. But if by posting a bunch of tire specs and relating a conversation you mean for people to generalize that it's okay to just blindly pump clinchers up to the tire's max pressure, it's bad advice.
#1049
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We use the Vittoria Diamante Pro Pista Clincher tyre on our training wheels and pump them up to approx. 10 bar which is 145psi which I thought was the max psi that is printed on it, I'll check tonight. Wiggle seem to think so too, Wiggle | Vittoria Diamante Pro Pista (Track) Clincher Tyre | Road Race Tyres
#1050
Senior Member
I'll be interested to hear reactions when someone gets their hands on Vittoria's new track tires:
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
https://www.vittoria.com/wp-content/...revised-v2.pdf
https://www.vittoria.com/tires/road-...e-series=track
I like the innovative design of this uni-directional tire.