|
|
Thread Tools | Display Modes |
#21
|
|||
|
|||
speed, wheels, and inline skaters
|
Ads |
#22
|
|||
|
|||
speed, wheels, and inline skaters
Tom Sherman wrote:
: Tom Blum wrote: : One racer, when my friend and I passed him with malice, at about 20 ( Hey!! : I didn't say WE were faster!!) , accellerated, quickly caught us, skated : alongside and said "Trying a breakaway, huh?" : : Believe it, my friend. : Just find some good chip seal or freshly milled asphalt concrete [1], : and the inline skaters will be out of luck. Isn't it unsporting to attack on the chipseal sections? -- Risto Varanka | http://www.helsinki.fi/~rvaranka/hpv/hpv.html varis at no spam please iki fi |
#23
|
|||
|
|||
speed, wheels, and inline skaters
Tom Sherman wrote:
: Tom Blum wrote: : One racer, when my friend and I passed him with malice, at about 20 ( Hey!! : I didn't say WE were faster!!) , accellerated, quickly caught us, skated : alongside and said "Trying a breakaway, huh?" : : Believe it, my friend. : Just find some good chip seal or freshly milled asphalt concrete [1], : and the inline skaters will be out of luck. Isn't it unsporting to attack on the chipseal sections? -- Risto Varanka | http://www.helsinki.fi/~rvaranka/hpv/hpv.html varis at no spam please iki fi |
#24
|
|||
|
|||
speed, wheels, and inline skaters
"Mike" wrote in message ...
I think you should check your speedometer, I have never seen a roller blader moving that fast. Check out the movie "Airborne" sometime. The last 20 minutes in particular. Of course, they're racing downhill but they're still haulin boody. I'm a fat old fart and I can still cruise along pretty good on the flats and being heavy I can smoke my son on the downhills. The problem with that is not only stopping but also KEEPING from stopping. I hit a small piece of white rock once while zingin down a hill and I was like a Heywood Banks tune: YEAH TOAST!!! |
#25
|
|||
|
|||
speed, wheels, and inline skaters
"Mike" wrote in message ...
I think you should check your speedometer, I have never seen a roller blader moving that fast. Check out the movie "Airborne" sometime. The last 20 minutes in particular. Of course, they're racing downhill but they're still haulin boody. I'm a fat old fart and I can still cruise along pretty good on the flats and being heavy I can smoke my son on the downhills. The problem with that is not only stopping but also KEEPING from stopping. I hit a small piece of white rock once while zingin down a hill and I was like a Heywood Banks tune: YEAH TOAST!!! |
#26
|
|||
|
|||
speed, wheels, and inline skaters
I have been enjoying my new Corsa and am able to cruise in the low to
mid 20's but I am always amazed when I encounter inline skaters on the trails. They can move right along in the hi teens and low twenty's (mph) without the mechanical advantage of a gear system. The top racers run at 27 mph. How do they do that? Many people on this forum think bigger wheels are faster but these guys are on micro wheels. I can't believe their bearings are that much better and they certainly are not more aerodynamic in their body position. So, does the answer lie in hard wheels or is their some incredible power in their leg stroke? I wonder how fast a fully suspended recumbent would be if it rode on hard,ie.,noncompliant, wheels?. Perhaps that is why the more psi the faster. Any thoughts? Skott Hi Skott Glad you are enjoying your Corsa, it is a great bike! Big wheels are most definitely lower rolling resistance than small wheels if all else is equal (width, construction, pressure) with research going back well over 100 years in train, car, and bike wheels. Rolling resistance is inversely proportional to diameter on smooth surfaces, but can get proportionally worse as the wheels get smaller on rougher surfaces. Bicycling Science, High Tech Cycling, and Bicycle Design are a few books that cover that research in bicycle tire rolling resistance. Can very fast bikes be made that use small wheels? Absolutely! Its more complicated than just rolling resistance, with aerodynamics being the majority of the drag over about 10 or 11 MPH on most fast upright racing bicycles. I could only find the inline ~~ hour record at about 24 MPH for a little over an hour (without drafting) by Derek Parra (did'nt he win a Olympic medal in ice speed skating?) A very fast time by a world class skater and athlete, but just not in the same speed class as can be acheived by much lower capacity athletes on non-faired fast bicycles. How much is due to the skaters aerodynamics, higher rolling resistance, or ability to deliver power to the ground efficiently I just don't know. Enjoy your bike, and it sounds like chasing the fast bladers will be good training in your area! Tailwinds Rich Pinto Bacchetta Bicycles |
#27
|
|||
|
|||
speed, wheels, and inline skaters
I have been enjoying my new Corsa and am able to cruise in the low to
mid 20's but I am always amazed when I encounter inline skaters on the trails. They can move right along in the hi teens and low twenty's (mph) without the mechanical advantage of a gear system. The top racers run at 27 mph. How do they do that? Many people on this forum think bigger wheels are faster but these guys are on micro wheels. I can't believe their bearings are that much better and they certainly are not more aerodynamic in their body position. So, does the answer lie in hard wheels or is their some incredible power in their leg stroke? I wonder how fast a fully suspended recumbent would be if it rode on hard,ie.,noncompliant, wheels?. Perhaps that is why the more psi the faster. Any thoughts? Skott Hi Skott Glad you are enjoying your Corsa, it is a great bike! Big wheels are most definitely lower rolling resistance than small wheels if all else is equal (width, construction, pressure) with research going back well over 100 years in train, car, and bike wheels. Rolling resistance is inversely proportional to diameter on smooth surfaces, but can get proportionally worse as the wheels get smaller on rougher surfaces. Bicycling Science, High Tech Cycling, and Bicycle Design are a few books that cover that research in bicycle tire rolling resistance. Can very fast bikes be made that use small wheels? Absolutely! Its more complicated than just rolling resistance, with aerodynamics being the majority of the drag over about 10 or 11 MPH on most fast upright racing bicycles. I could only find the inline ~~ hour record at about 24 MPH for a little over an hour (without drafting) by Derek Parra (did'nt he win a Olympic medal in ice speed skating?) A very fast time by a world class skater and athlete, but just not in the same speed class as can be acheived by much lower capacity athletes on non-faired fast bicycles. How much is due to the skaters aerodynamics, higher rolling resistance, or ability to deliver power to the ground efficiently I just don't know. Enjoy your bike, and it sounds like chasing the fast bladers will be good training in your area! Tailwinds Rich Pinto Bacchetta Bicycles |
#28
|
|||
|
|||
speed, wheels, and inline skaters
There's an older type of racing roller skate that has one-way rachets on the wheels, like the freewheel gear clusters on a bike. You don't have to draw them back sideways to catch some forward thrust, but you can pull straight back. The wheels are in a 2X2 configuration rather than inline. They are often used with ski poles and I've seen a few expert skaters going faster with them than any inline skater could do. They are only rarely used in the U.S. and are more expensive than most inline models. All the people with who I've talked at inline skate shops, knew nothing about them. They got blank looks on their faces when I tried to describe them and how fast they could allow a person to skate. Nothing could possibly be faster than their inline skates, according to them. A couple of guys used them on our bikepaths to commute the 10 miles from their residence to the university in past years. They could outrun all but the fastest bicyclists. The one-way ratchets are especially effective when skating uphill, compared to the inline two-way wheels. The ski poles would be handy instruments to wield against harrassing motorists or attack dogs, ne c'est-pas? Steve McDonald |
#29
|
|||
|
|||
speed, wheels, and inline skaters
There's an older type of racing roller skate that has one-way rachets on the wheels, like the freewheel gear clusters on a bike. You don't have to draw them back sideways to catch some forward thrust, but you can pull straight back. The wheels are in a 2X2 configuration rather than inline. They are often used with ski poles and I've seen a few expert skaters going faster with them than any inline skater could do. They are only rarely used in the U.S. and are more expensive than most inline models. All the people with who I've talked at inline skate shops, knew nothing about them. They got blank looks on their faces when I tried to describe them and how fast they could allow a person to skate. Nothing could possibly be faster than their inline skates, according to them. A couple of guys used them on our bikepaths to commute the 10 miles from their residence to the university in past years. They could outrun all but the fastest bicyclists. The one-way ratchets are especially effective when skating uphill, compared to the inline two-way wheels. The ski poles would be handy instruments to wield against harrassing motorists or attack dogs, ne c'est-pas? Steve McDonald |
#30
|
|||
|
|||
speed, wheels, and inline skaters
|
Thread Tools | |
Display Modes | |
|
|