1mph gain switching to narrower tires
05-29-18, 05:10 PM
#51
Senior Member
Well just back from a ride. I timed myself for a flying kilo. Did a 1:10 with the 21s. They are Continental triathalon 250's. Best I did previously on the 28s, Schwalbe One's, was a 1:14.
Similar wheels. The Schwalbes are mounted on Mavic SSC rims and Campy small flange hubs. The Continentals on Mavic Monthlery rims Campy high flange hubs.
Similar wheels. The Schwalbes are mounted on Mavic SSC rims and Campy small flange hubs. The Continentals on Mavic Monthlery rims Campy high flange hubs.
05-29-18, 05:43 PM
#52
Sunshine
Join Date: Aug 2014
Location: Des Moines, IA
Posts: 15,579
Bikes: '18 class built steel roadbike, '19 Fairlight Secan, '88 Schwinn Premis , Black Mountain Cycles Monstercross V4, '89 Novara Trionfo
Mentioned: 120 Post(s)
Tagged: 0 Thread(s)
Quoted: 9968 Post(s)
Liked 6,361 Times
in
3,632 Posts
McBeth Road and Highway 242 come to mind.
On topic: my bike came with 23mm tires. I switched to 25mm tires. Irode felt faster. And I got faster as the season went on. Now, I'm slower, because I've been lazy this year, and have gotten fat and out of shape. Conclusion: tires help the bike roll, and not slide out in a corner.
On topic: my bike came with 23mm tires. I switched to 25mm tires. I
or are you perhaps confusing Wilmette for Willamette OR?
i grew up in that area and go back a few times a year...i cant think of any roads that i would call 'steep climbs'.
thank you for saying this. Its like the OP writes for Bicycling. Words are typed, bit nothing of substance is written.
oh well.
05-29-18, 05:54 PM
#53
Member
Join Date: Jun 2010
Location: Riverside, CA
Posts: 43
Bikes: 2011 Cannondale CAAD10-4
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I'm actually referring to areas near-ish to Eugene, OR. (There is actually Willamette, OR, but it's just south of Oregon City and about 80 miles north of Eugene.) Based on one earlier poster's location in Eugene, I assumed that the reference to "Wilmette" was just a misspelling of "Willamette." Either way, while the mid-(Willamette) valley has nothing on the Alps, but there are at least several climbs in the area that most people would consider steep (Fox Hollow has a 13+% gradient, but it only lasts about three-quarters of a mile). Or long (Highway 242, the Old McKenzie Pass, is about 14 miles up from the west, measured from the junction with Highway 126 in Belknap Springs to the summit, even though the average grade is only about 6.5% or so).
05-29-18, 06:52 PM
#54
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
I was born in Evanston, which is just south of Wilmette. The only hill is Ridge Avenue, which is the ancient shoreline of Lake Chicago (the precursor of Lake Michigan). It is barely a blip.
Where I live now, my local hill has 4 miles of 15% to 18% grade. (It is not in north suburban Chicago.)
05-29-18, 09:34 PM
#55
Senior Member
Thread Starter
Coming off the beach in Winnetka. Short steep climb. Just my observation that the bike accelerates quicker with the narrow tire. And going up that hill I can go up one gear higher than usual. The Continentals are nice riding. Makes sense to me that a narrow tire rolls better than a wide one. I think they are 50grams lighter too.
What effect do you think 177.5 cranks have on speed? My other bikes have 170's. The Viking TT bike has the longer cranks and a 55 tooth big ring. Feels like I can stomp the pedals easier with the long cranks.
What effect do you think 177.5 cranks have on speed? My other bikes have 170's. The Viking TT bike has the longer cranks and a 55 tooth big ring. Feels like I can stomp the pedals easier with the long cranks.
Last edited by big chainring; 05-29-18 at 09:45 PM.
05-29-18, 09:52 PM
#56
just another gosling
Join Date: Feb 2007
Location: Everett, WA
Posts: 18,992
Bikes: CoMo Speedster 2003, Trek 5200, CAAD 9, Fred 2004
Mentioned: 113 Post(s)
Tagged: 0 Thread(s)
Quoted: 3632 Post(s)
Liked 1,626 Times
in
1,189 Posts
Make no mistake, on average there is much more weight on the rear wheel of a road bike. Testament is the fact the rear tires wear out 2-3x's faster than the front.
Wheel slippage is a very small percentage of this difference. Front wheel also turns the bike therefore there is scrub angle in front as well. Difference in wear is due to the weight difference front to rear. The rear shoulders much more of overall weight baring for majority of riding. The butt of a rider can endure much more weight than the hands of a rider on a sustained basis. Why you don't see many 80 y.o.'s on a drop bar bike.
Wheel slippage is a very small percentage of this difference. Front wheel also turns the bike therefore there is scrub angle in front as well. Difference in wear is due to the weight difference front to rear. The rear shoulders much more of overall weight baring for majority of riding. The butt of a rider can endure much more weight than the hands of a rider on a sustained basis. Why you don't see many 80 y.o.'s on a drop bar bike.
To the OP - I prefer 23mm tires on my singles, 28mm on our tandem. I don't think they ride rough, but a lot of that depends on the tire. Frame and position is a big factor in bike feel. Too many people ride with too steep an angle on their arms because of too short a reach.
__________________
Results matter
Results matter
05-29-18, 09:53 PM
#57
Senior Member
Thread Starter
I was born in Evanston, which is just south of Wilmette. The only hill is Ridge Avenue, which is the ancient shoreline of Lake Chicago (the precursor of Lake Michigan). It is barely a blip.
Where I live now, my local hill has 4 miles of 15% to 18% grade. (It is not in north suburban Chicago.)
I go up to Wisconsin to ride hills now and then. Come back to the flatlands and fly.
My two kids were born at Evanston hospital.
Last edited by big chainring; 05-29-18 at 10:02 PM.
05-29-18, 10:26 PM
#58
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
I was born at that hospital as well, and I think I got my first bike at Turin. Is Turin still in existence?
05-29-18, 10:37 PM
#59
Senior Member
Thread Starter
05-29-18, 11:04 PM
#60
Occam's Rotor
Join Date: Jul 2013
Posts: 7,248
Mentioned: 61 Post(s)
Tagged: 0 Thread(s)
Quoted: 2366 Post(s)
Liked 2,331 Times
in
1,164 Posts
I'm thinking now it must have been the Chicago store. I think my sister got her bike there, and I got mine at some other place in Evanston (Pony shop?). We moved in 1971.
05-30-18, 05:20 AM
#61
Senior Member
Thread Starter
Turin started out on Sedgewick Street. Bought a Raleigh Sports 3 speed there. When I rolled it out of the store I saw Marty Allen getting out of a Limo and going into La Magaritta del Sol restaurant across the street. Clark, Lincoln and Sedgewick all come together there.
05-30-18, 05:30 AM
#62
Senior Member
Join Date: Jan 2010
Location: TC, MN
Posts: 39,333
Bikes: R3 Disc, Haanjo
Mentioned: 353 Post(s)
Tagged: 1 Thread(s)
Quoted: 20620 Post(s)
Liked 9,286 Times
in
4,599 Posts
05-30-18, 05:56 AM
#63
☢
Its all a compromise: what you gain in speed, you give up in comfort. I hope your route is smooth roads? At present 28" are pretty much the best compromise under all conditions.
05-30-18, 06:16 AM
#64
Senior Member
Join Date: Oct 2016
Location: Wisconsin
Posts: 93
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 56 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Goes to the OP's credibility.
05-30-18, 06:22 AM
#65
Senior Member
Thread Starter
Yeah I guess we are spoiled here with good pavement. Didnt reslize everyone is dealing with poor roads. And my Viking is Reynolds 531. Birminghams finest steel. The best steel in the world. The steel that was used to win the big war WW2. 531 rides real nice and kinda glides over the bumps.
05-30-18, 06:27 AM
#66
Senior Member
Thread Starter
What I wss getting at here is the SSC wheels are lighter with a slightly heavier tire. The Monthlery wheels are a touch heavier with a lighter tire. So its a wash. Hubs being Campy, nuff said.
05-30-18, 06:31 AM
#67
Senior Member
Thread Starter
The SSC wheels are about 10 years newer. The Monthlerys are 47 years old and going strong.
05-30-18, 11:05 AM
#69
Senior Member
Thread Starter
I dont see a big difference in wheels. The SSC's are a better rim, but I like tge pefiod correctness of the Monthlerys. Anyway I dominated on the weekend rides I did. Lot of people doggin it because of the hot weather I think.
05-30-18, 11:25 AM
#70
Voice of the Industry
Join Date: May 2007
Posts: 12,572
Mentioned: 18 Post(s)
Tagged: 0 Thread(s)
Quoted: 1187 Post(s)
Likes: 0
Liked 8 Times
in
8 Posts
Sorry, but wear is from slippage if one isn't just piddling along. More power, more slippage. Our tandem has pretty equal weight front and back. Front tire essentially does not wear. The mold line can last 100s of miles. Rear tire develops flat spot down the center almost immediately, wears out in maybe 3000 miles. Rear tire lasts longer on my singles than on the tandem, but the front tire about the same. Doesn't wear. I should mention that I don't mind speed, don't brake much. 73 and ride with bars well below saddle including on our tandem. Trick is to have a good position, light hands on the bars, go to the gym.
To the OP - I prefer 23mm tires on my singles, 28mm on our tandem. I don't think they ride rough, but a lot of that depends on the tire. Frame and position is a big factor in bike feel. Too many people ride with too steep an angle on their arms because of too short a reach.
To the OP - I prefer 23mm tires on my singles, 28mm on our tandem. I don't think they ride rough, but a lot of that depends on the tire. Frame and position is a big factor in bike feel. Too many people ride with too steep an angle on their arms because of too short a reach.
We do agree on your last sentence and widely misunderstood. Longer reach can reduce pressure up the arms without question. My view is...better riders support body weight with longer reach as you say more like hammock aka tension...in contrast to how a tent is held up by braces aka compression.
05-30-18, 11:41 AM
#71
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,307
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 97 Post(s)
Tagged: 0 Thread(s)
Quoted: 3730 Post(s)
Liked 2,279 Times
in
1,431 Posts
We can have a friendly disagreement of slippage versus wear bearing of the rear tire causing it to wear 2-3 x's faster than front. My personal view is...its a combination however I believe rear weight bias scrubs rubber off more than any slippage due to power application to the pedals. Just my opinion.
__________________
RUSA #7498
Originally Posted by chandltp
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
05-30-18, 11:44 AM
#72
Senior Member
Join Date: Jul 2009
Posts: 4,819
Bikes: Colnago, Van Dessel, Factor, Cervelo, Ritchey
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 3180 Post(s)
Liked 5,692 Times
in
2,291 Posts
Because 80 year-olds don't have butts? Or arms?
05-31-18, 01:26 PM
#74
Senior Member
Join Date: Apr 2011
Location: Alpharetta, GA
Posts: 15,280
Bikes: Nashbar Road
Mentioned: 71 Post(s)
Tagged: 0 Thread(s)
Quoted: 2934 Post(s)
Liked 340 Times
in
227 Posts
Why not? Road wear is a function of what, the fourth power of axle weight? It stands to reason that tire wear is something more than linear with weight. Since it's the tires that wear the road down.
05-31-18, 04:29 PM
#75
Senior Member
Thread Starter
