Retro roadies- old frames with STI's or Ergos
09-28-17, 01:35 PM
#6551
Sunshine
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I am chomping at the bit to see how much improvement GP4000sii will be on my retroroadie. I have a set on the way.
I'm currently fitted with Vittoria Randonneur II, cheap and durable, but if they run in the vicinity of the normal Randonneurs, that's 32.4w rolling resistance per tire.
Compared with the GP4000s, which test at 12.2w per tire, that's 40w total right there.
I'm currently fitted with Vittoria Randonneur II, cheap and durable, but if they run in the vicinity of the normal Randonneurs, that's 32.4w rolling resistance per tire.
Compared with the GP4000s, which test at 12.2w per tire, that's 40w total right there.
09-28-17, 01:47 PM
#6552
aka Tom Reingold
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Do you realize that with two tires that are identical in everything but width, the wider tire has less rolling resistance?
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Tom Reingold, tom@noglider.com
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Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
When man invented the bicycle he reached the peak of his attainments. Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
09-28-17, 01:55 PM
#6553
Senior Member
But it's all good. It'll be 28s v 28s for me, and I'll report back on back-to-back results when the tires come in.
09-28-17, 02:23 PM
#6554
Sunshine
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But I am not going to pump a 25mm tire to the same pressure as a 32mm tire and the contact patch will therefore be different between the two sizes.
Plus- I dont put it past that tire(Randonneur) to somehow defy physics and manage to be slower in both smaller AND larger sizes. Thats just how wonky that tire is(i have a pair)
Trend spotting: Why you need to switch to wider tyres | road.cc
09-28-17, 03:12 PM
#6555
Senior Member
09-28-17, 03:17 PM
#6556
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My other bike has Conti Ultra Sport II and Ultegra/Open pro wheels and the GP4000 blows them away. 28c is closer to 30, which barely fits my Ironman, but the ride is sublime
09-28-17, 03:39 PM
#6557
Senior Member
I replaced a set of 23 gatorskins with 25 Continental GP4000IIS's...much better ride, much smoother...everything about it was better.
09-28-17, 08:01 PM
#6558
aka Tom Reingold
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Yes, I've read lots of horrible reviews of the Randonneur. On the other hand, I have the Vittoria Voyager Hyper. Man, that's a nice tire.
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Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
When man invented the bicycle he reached the peak of his attainments. Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
Tom Reingold, tom@noglider.com
New York City and High Falls, NY
Blogs: The Experienced Cyclist; noglider's ride blog
When man invented the bicycle he reached the peak of his attainments. Elizabeth West, US author
Please email me rather than PM'ing me. Thanks.
09-29-17, 04:17 PM
#6560
Banned.
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Continental GP and Gatorskin are sooooo much better than the cheaper Vittorias. The Zaffiro and Randonneur are like pedaling through mashed potatoes in comparison. Tires are, to a great extent, one of those "you get what you pay" things and the best value is 2 to 3 from the top of the line.
09-30-17, 06:24 AM
#6561
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09-30-17, 06:48 PM
#6562
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@malcala622 Very nice looking pair of bikes!
Do you trigger the camera remotely? With a phone?
Brent
Do you trigger the camera remotely? With a phone?
Brent
09-30-17, 08:03 PM
#6563
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Updated my Merckx
Replaced the newer Ultegra crank with an older model, switched out the Shimano wheels for Mavics and found a saddle that matches the bar tape (though it's hard to tell from the pic). I think it looks better.
09-30-17, 09:20 PM
#6564
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@malcala622 Very nice looking pair of bikes!
Do you trigger the camera remotely? With a phone?
Brent
Do you trigger the camera remotely? With a phone?
Brent
09-30-17, 10:19 PM
#6565
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FWIW, 700x28 GP4000S II's are measuring a bit over 30mm wide on several wide rims I've used. They're an outstanding tire. I've got various sizes of GP4000S IIs on six different bikes right now and another two sets on the shelf waiting for a need. I like 'em a lot.
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10-01-17, 05:14 PM
#6569
Sunshine
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Added some Microshift 7sp shifters to my '87 Schwinn Prelude.
Love the cockpit now with the Nitto 0degree stem, Soma Hwy1 bars, and 7sp shifters.
Love the cockpit now with the Nitto 0degree stem, Soma Hwy1 bars, and 7sp shifters.
10-02-17, 10:30 AM
#6570
Senior Member
I was originally thinking Challenge Strada Biancas because they actually come in 700x30, but they seem to get mixed reviews (fantastic... but the durability for the cost isn't great).
10-02-17, 12:58 PM
#6571
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[QUOTE=greg3rd48;19897556]'87 Cannondale Black Lightning
Very nice bike. I love the black
Very nice bike. I love the black
10-02-17, 01:55 PM
#6572
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That's actually nice to hear. I've been looking to fit the widest that my frame will accept. And 30mm is probably the max (that still leaves a couple mms).
I was originally thinking Challenge Strada Biancas because they actually come in 700x30, but they seem to get mixed reviews (fantastic... but the durability for the cost isn't great).
I was originally thinking Challenge Strada Biancas because they actually come in 700x30, but they seem to get mixed reviews (fantastic... but the durability for the cost isn't great).
Panaracer 32mm GravelKings on 19mm Mavic Reflex rims (predecessor to Open Pro) measure 30mm actual width, and Compass 28mm Chinook Pass EL measure 29mm actual width on 23mm TB14 rims. The latter are very nice tires, the former are pretty good.
10-02-17, 02:11 PM
#6573
Senior Member
10-02-17, 02:56 PM
#6574
Duke Ulysses
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So fast it's blurry! I love that thing!
10-03-17, 08:13 AM
#6575
Old Legs
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Fiannly upgraded my Ciocc to Brifters.
After months of deciding, should I convert my DT shifters to Brifters, pulled the trigger. I think that one classic bike with brifters, is great, but I'm not touching my Campy , Concorde, unless I can make 8 speed Ergo Shifters work properly . Thanks for looking . KB
Update: This Micro-shifters work as good as my Shimano Claris . A little different configuration. KB
PA030390.jpg
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Update: This Micro-shifters work as good as my Shimano Claris . A little different configuration. KB
PA030390.jpg
PA030392.jpg
PA030393.jpg
Last edited by kcblair; 10-03-17 at 10:40 AM.