's Forum Archives - Components

Archive Home >> Components(1 2 3 4 5 6 7 8 9 10 )

Is the harshness from the frame or Campy Omega rims?(5 posts)

Is the harshness from the frame or Campy Omega rims?Scy
Apr 3, 2001 8:04 PM
Bought my Giant Cadex CFR2 used about four months ago and have logged more miles during that period than in 12 months prior. I'm finding out that the ride gets pretty uncomfortable over rough pavement compared to my previous 12-year-old steel Bianchi. I thought that a carbon frame like the Cadex was suppossed to give a more "compliant" or muted ride.

But now I'm thinking maybe it's the aero rims (Campy Omega rim w/ 105 hubs and 32 spokes). Does anyone know about this rim and whether it's considered to be stiff or harsh? I haven't ridden too many modern road machines so I have no basis of comparison.

Bottom line is this: if I want a more comfortable ride, should I get another bike, or can I just change out the wheels? I've already upgraded to an Easton EC70 carbon fork and that helped a lot.

Aside from the harshness, I love the bike: stiff, light, responsive, and predictable. Maybe harshness is just the cost of having a cheap race bike.
Cheapest fix is bigger tiresCory
Apr 4, 2001 8:34 AM
Before you spend a lot of money, I'd try running bigger tires. I know this is heresy, but if 28s will fit (they'll actually measure only 24-25mm, depending on what you buy), try those. Somebody convinced me to do it eight or 10 years ago, and I'll never go back.
How will that affect performance?Scy
Apr 4, 2001 12:18 PM
Sounds like it's worth a shot.

These days, I'm doing group rides with these racer-types 2 or 3 times a week and the pace is really intense (usually over 25 mph on the flats). They (about 100+ riders) do all the work and I just try to hang on in the back.

Will the larger tires create any performance compromises (cornering, predictability, rolling resistance, wind resistance)? It's hard enough for me to keep up as it is.
Oh, well if you want to go FAST...Cory
Apr 4, 2001 2:57 PM
In theory, larger tires give a little more rolling resistance but higher cornering speeds, because you have more rubber on the road. In fact, I can't feel (or measure, on my normal rides) any difference at all--the rides I do often take the same emount of time on 32s as they do on 23s.
But I'm a recreational rider, lumbering along with a bunch of people who are just out for the fresh air and exercise. There's enough variation in my normal times to hide any effect from the tires.
On the other hand, I HAVE seen a study that said they're not any slower, because they absorb shock that would deflect skinnier, harder tires and slow you down.
re: Is the harshness from the frame or Campy Omega rims?Larry Meade
Apr 5, 2001 6:11 AM
Try wider tires. Often rolling resistance is lower on wider tires. My personal feeling is that if you are getting fatigued from road shock, you aren't going to be putting as much power to the pedals as if you were comfortable. Any performance difference would probably be undetectable but the comfort factor will be noticable.