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The C&V Disadvantage: How Big Is It?

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The C&V Disadvantage: How Big Is It?

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Old 08-18-14, 06:11 PM
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Originally Posted by Barrettscv
So a frameset that has a well designed balance between necessary flex and stiffness in a 54 size can be a noodle under a 200 lbs rider in a 63 size.
You think Sean Kelly's Vitus wasn't a complete wet noodle?

Funny how that didn't inhibit one of the most powerful riders in the history of racing.
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Old 08-18-14, 06:13 PM
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Originally Posted by bikemig
Did you put your GF on steel rims to even things up on the ride?
Nah... in this case, it's a Peugeot mixte that started off really original and stock, and I've been replacing components as they show their... unsuitability. Tires, rear derailleur, shifters, wheels, eventually the whole thing will be replaced.
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Old 08-18-14, 06:19 PM
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Old 08-18-14, 06:22 PM
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Originally Posted by Chrome Molly
I consider it a performance gain because it has added a new dimension to my riding.

I was always more of a spin up the hill guy, and still am most of the time. But, having the out of the saddle option to get up hills has changed things for my riding. Out of the saddle climbing on the 760, I felt like I was dumping a lot of energy into the tires. Having swapped the tires from the new rig and the 760 as an experiment I realized that wasn't it. Something sort of feels like a dampening or absorbing effect on the trek that isn't there on the custom. I'm not even sure it's all due to the frame, might be the carbon fork vs the steel one or other factors.

Now that I have gotten more comfortable out of the saddle, I've been working on proper balance that allows getting up the hill out of the saddle without anything close to hammering (useful on the longer rides as it seems to use different muscles). I also have been trying to remain in balance when hitting it harder (but when I tire it is much more difficult). So these are two options I didn't use much before and one of those is available below AT. Spending a lot of time on indoor spin bikes, I've tried to focus on form (partly to make the indoor riding less dull). After having focused on it, I admit I am also more efficient at it on the 760 and do it on that bike more often. But it doesn't yield the same result.

The above said, I also value the "century ride" more than "stiffness". There are many stiffer bikes than what I ride that I wouldn't be happy with. Having a smooth enough ride with enough stiffness to be satisfactory is probably a different thing for everyone. When I say performance it's my personal take on it, difficult enough to describe and pretty much impossible for me to quantify.
I think you will find with the right rhythm you may overcome that "dampening" feel. You will have to play around with cadence to find the right groove. For me, when I am out of the saddle, my natural cadence drops by 10. The drop feels better on a more flexible bike than on a stiff bike for me. My modern bike (quite stiff) forces me to a faster cadence out of the saddle but it has the gears to accommodate (goes to 33 gear inches). But the Frejus (quite flexy in comparison) only goes to 47 gear inches. So going up a hill at 10mph is different on both bikes but I don't think I am much more "tired" on either one.
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Old 08-18-14, 06:24 PM
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The way i read the OP the change was in comparison between an older mixte and a hyrbrid vs a full fledged road bike. This alone can make the difference

IME a real road bike is clearly faster with less effort than an more upright bike whether new or vintage. Easily 2 mph at a casual speed (12 on the upright vs. 14+ on road) and the difference is greater at higher speeds.

based on various things I have read over the years I attribute this to better bio-mechanical position and better aerodynamics.


but the most important thing is what I imagine to be the huge, if bug spattered teeth, smile on person riding her new bike.
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Old 08-18-14, 06:55 PM
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Not much. Give anyone a new bike and they'll go hard the first day.
Same thing with that new pair of Gel Lites, Red Ball Jets, or Air Jordans.

If I'm by myself, I often ride my different bikes in different ways, so it's hard to compare.
I've been constantly increasing my PR speed on my workout run, no matter the bike.
However, I upped it 1.1 mph on my new bike, first ride, too much for just excitement.
I think it's easier to ride fast on that one. I can do everything harder, except pace myself.

There is no expectation that I'm going to bang around in a pace line on my Semi Pro (tried it, and it's HARD)
However, add 7 years and DT indexed DA, and I'll be right there with you on my De Rosa, so the weight difference is pretty moot.

My Wednesday night slugfest ammo is generally a carbon bike or my new steel bike.
If I'm going to run 2-minute hectic spots in front of a pace line, and hang on the nextr 10 minutes,
just to do it again, I want it to be without obstacle, bike-wise. Even if it's just in my head.

A P-51 can likely turn inside an F-15, but I'm not sure the P-51 will live to fight another day.

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Old 08-18-14, 08:15 PM
  #82  
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Originally Posted by squirtdad
. . .


but the most important thing is what I imagine to be the huge, if bug spattered teeth, smile on person riding her new bike.

+ 1. Never underestimate the importance of placebos.
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Old 08-18-14, 08:21 PM
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Originally Posted by iab
You think Sean Kelly's Vitus wasn't a complete wet noodle?

Funny how that didn't inhibit one of the most powerful riders in the history of racing.
I always wondered why he put up with one of those. I test rode a Vitus on an extended ride, yes it was flex, but it also took care of you, one was not going to arrive at the finish beat up riding one of those.
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Old 08-18-14, 08:25 PM
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Originally Posted by Bandera
Get some more!
Here's the Vitus converted to a 10 cog cassette, works a treat and keeps the old bike in service for reasonable $ w/ proper DT controls.
~20lbs ready to ride w/ clinchers, cages, computer etc.

Truth be told going from a 7 cog cassette gave me a lower range suitable for an elderly gent but preserved the tight ratios I've come up with, old race bikes are still fast race bikes in the right hands.

-Bandera
Nah, I have one Ergo 8 bike, good enough if I want a few more. Otherwise, I know the limitations and accept them. I also have a raft of bikes with 120 or 126 mm spacing. The ability to swap wheels as I wish has quite a bit of utility for me. Besides it makes the guys with 11 cogs feel slower when you hang around with 5 or 6.
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Old 08-18-14, 09:23 PM
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You guys are funny. Most of you are hard core riders that have put in huge miles. You can climb a hill eating a Popsicle , that I struggle to climb. I have witnessed it on group rides. For most of you, I bet you see no difference at all between modern and old as far a speed. Your all in top shape with strong legs. I hope to get there some day. Hitting a hill for me with brifters does make me faster on the hill. It is not a placebo either.
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Old 08-18-14, 10:50 PM
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Originally Posted by crank_addict
The trend used to be the stretched, longer top tube whereas today the compact frame makes more of a crunched body fitment. For those into riding an old steel bike, try going down in frame size or two. Expect a bit of compromise in comfort but you'll be surprised in performance gain. This goes for riders of all sizes. It might seem strange at first and you'll have to get a modern long seat post, but its quite a fun sensation.
I've experienced this firsthand with my Tempo. It's a 21" (~53cm) frame, and there is certainly something to what you're saying. My "correct" size is 56cm, but on the 53 my whole body almost feels like a coiled spring and I can really feel the bike jump ahead when I tell it to go; much more so than when I was on a 56cm Sekai a while back.

Originally Posted by squirtdad
but the most important thing is what I imagine to be the huge, if bug spattered teeth, smile on person riding her new bike.
She dug the bugs out for the rubber chicken dinner shot on page two, but the smile? Yeah. She loves that bike.
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Old 08-18-14, 11:52 PM
  #87  
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I have never ridden a modern CF brifter roadbike. I'd sure like to.

Most of my riding is on C&V roadbikes with downtube shifters. My commute bike is C&V with Retroshifts (shifters mounted on the front of the brake levers).

On the downtube shifter bikes, especially the friction ones, I do find it hard to grab a fast shift when I'm pedaling hard, especially when I'm out of the saddle and suffering up a hill. In that situation, I lose momentum while shifting. More skill would probably make it better. I find myself struggling along in a less than ideal gear, just to avoid losing momentum. It doesn't help that some of them are six speed freewheels.

The commute bike shifts easily from the hoods but it weighs like 35 lb so that is a burden in its own right.

I am sure that if I had a 16 lb carbon wonderbike with 10 speed brifters, I'd be faster in some situations.

Then again, I am sure that if I drank less beer, I'd be faster in all situations.
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Old 08-19-14, 06:25 AM
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Originally Posted by iab
You think Sean Kelly's Vitus wasn't a complete wet noodle?

Funny how that didn't inhibit one of the most powerful riders in the history of racing.
I don't have opinions based on folklore. Understanding engineering principles is more reliable.

I'm sure if the best riders of yesterday were competing today, they would want the same equipment as the other great riders of today.

Selecting any bike, old or new, should be based on intended use with a good understanding what's required by it's user on a case-by-case basis. I find my vintage bikes to be more than sufficient performers for the riding I expect to enjoy on the bike. I also enjoy the aesthetic of a older bike. Often when form equals function, the result is aesthetically pleasing.
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Old 08-19-14, 11:04 AM
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Recently I rode on a club organized two day, two hundred mile ride.

My riding partner was riding a modem racing bike, I was riding my Peugeot UO10 commuter bike.

The first day, I came in 30 min behind him, the second day I didn't try as hard and came in an hour behind.

So if we do some averaging.

one hundred mile average 45 minutes behind.

Ten mile average 4.5 minutes behind.

One mile average .45 minutes behind.

Now if this was a one mile sprint race, and I was 30 seconds behind,
I would feel like I got spanked.

In a ten mile road race and I was 5 minutes behind,
he would be eating my lunch.

But it's not a race.
When I got out and do a ten mile ride around my neighborhood,
I don't really care if it takes me three or four minutes longer.

Especial when we're talking about the difference between a
$300 bike and a $3,000 bike.
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Old 08-19-14, 11:24 AM
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Originally Posted by Barrettscv
I find my vintage bikes to be more than sufficient performers for the riding I expect to enjoy on the bike. I also enjoy the aesthetic of a older bike. Often when form equals function, the result is aesthetically pleasing.
I'm with you here, and thanks for stating it so succinctly. My road bike is plenty fast, and aesthetically I love the simplicity of the classics. I don't expect to ever get into real racing, so the difference of a few pounds or a few seconds isn't life-or-death for me.
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