Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

Reply
 
Thread Tools Search this Thread
Old 04-10-10, 03:06 PM   #1
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
What makes my road bike more comfortable than my hybrid?

So after a long time off my road bike, I took it for a spin today and WOW, it feels much more comfortable than my hybrid over bumps. I don't understand why! Sure I can still feel the bumps etc but it feels more dampened than the hybrid. The differences are:

- road bike has 23mm armadillos at 120psi and the hybrid has 35mm tyres at 75psi
- hybrid has a brooks and the road bike has a selle royal viper (I had this on the hybrid though too)
- hybrid is heavier with mudguards and a rack
- road bike has a carbon fork

Both have drop bars and carbon seat posts.

Am really curious at what does this dampening - surely it can't all be the fork?

Thanks

Daven
daven1986 is offline   Reply With Quote
Old 04-10-10, 04:09 PM   #2
Bianchigirll 
Bianchi Goddess
 
Bianchigirll's Avatar
 
Join Date: Apr 2009
Location: Camp Hill, PA
Bikes: Too many to list here check my signature.
Posts: 22,400
what is the frame materiel? brand and model of bikes too
__________________
Bianchis '87 Sport SX, '90 Proto, '90 Campione del Fausto Giamondi Specialisma Italiano Mundo, '91 Boarala 'cross, '93 Project 3, '86 Volpe, '97 Ti Megatube, , '90 something Vento 603,

Others but still loved,; '80 RIGI, '80 Batavus Professional, '87 Cornelo, '09 Motobecane SOLD, '?? Jane Doe (still on the drawing board), '90ish Haro Escape
Bianchigirll is offline   Reply With Quote
Old 04-10-10, 04:15 PM   #3
njkayaker
Senior Member
 
Join Date: Sep 2007
Bikes:
Posts: 9,429
Quote:
Originally Posted by daven1986 View Post
- road bike has 23mm armadillos at 120psi and the hybrid has 35mm tyres at 75ps
The wider/lower-pressure tires are going to be better at absorbing bumps.

Quote:
Originally Posted by daven1986 View Post
Am really curious at what does this dampening
It's you (I believe)! You probably are riding lighter on the road bike. It's possible that you are using your arms more to absorb bumps.
njkayaker is online now   Reply With Quote
Old 04-11-10, 03:23 AM   #4
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
The frames are both alu, except for the road bike carbon fork.

I had thought the wider tyres would be better at absorbing bumps, but the ride just seems much harsher on my hybrid! I had suspected it may have something to do with the weight, although I was carrying a u-lock, shoes, and 2 cable locks, which is probably the same weight as what I carry on my hybrid. I also thought it may be the rack and therefore extra weight on the back wheel - although even bumps from the front wheel seemed less harsh (although this is probably the carbon fork).

It is possible that it is me doing the dampening, although I do stand up and do a lot of absorbing on my hybrid.

Not complaining though! I am pleased, but have been looking for ways to improve comfort on my hybrid!

Thanks for the replies
daven1986 is offline   Reply With Quote
Old 04-11-10, 06:29 AM   #5
tntyz
Senior Member
 
tntyz's Avatar
 
Join Date: Aug 2008
Location: Nabob, WI
Bikes: '03 Trek 7500, '08 Madone 4.5
Posts: 1,176
I notice the same thing. Had a compressed nerve in my upper back and found that riding the hybrid really hurt after a while. On hybrid I sit much more upright and every bump was helping to compress my spine. On the road bike I'm more stretched out and the bumps are absorbed by muscles and joints flexing.

Who says that hybrids have to be more comfortable than road bikes?
tntyz is offline   Reply With Quote
Old 04-11-10, 10:36 AM   #6
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Well I converted my hybrid to drop bars so I have a similar, if not identical, position.

Either way I am pleased, because I always thought my road bike was harsh - obviously I was wrong! Had such a beautiful ride on it though
daven1986 is offline   Reply With Quote
Old 04-11-10, 12:32 PM   #7
BarracksSi
Bike ≠ Car ≠ Ped.
 
BarracksSi's Avatar
 
Join Date: Jul 2007
Location: Washington, DC
Bikes: Some bikes. Hell, they're all the same, ain't they?
Posts: 13,858
Quote:
Originally Posted by tntyz View Post
I notice the same thing. Had a compressed nerve in my upper back and found that riding the hybrid really hurt after a while. On hybrid I sit much more upright and every bump was helping to compress my spine. On the road bike I'm more stretched out and the bumps are absorbed by muscles and joints flexing.

Who says that hybrids have to be more comfortable than road bikes?
That's a big part of it, I'd say. I sometimes see people riding hybrids and city bikes with a bolt-upright position and imagine every bump shooting straight up their spine. A further-forward position like on a road bike lets the body pivot over bumps instead.
BarracksSi is offline   Reply With Quote
Old 04-11-10, 12:41 PM   #8
BarracksSi
Bike ≠ Car ≠ Ped.
 
BarracksSi's Avatar
 
Join Date: Jul 2007
Location: Washington, DC
Bikes: Some bikes. Hell, they're all the same, ain't they?
Posts: 13,858
Quote:
Originally Posted by daven1986 View Post
Well I converted my hybrid to drop bars so I have a similar, if not identical, position.
Ah, I remember reading this thread last night...

I'm also thinking that hybrid frames are meant to be sturdy while road bike frames are designed for long, half-day training rides and races. You won't see many marketing materials bragging about a road bike's hard ride and buzzy feel, for example. Your hybrid's rack also stiffens the rear triangle more than it already is.

That still doesn't explain the fatter tires not making up for the frame differences, though.
BarracksSi is offline   Reply With Quote
Old 04-11-10, 01:38 PM   #9
deep_sky
Senior Member
 
Join Date: Dec 2009
Location: Mountain View, CA
Bikes: 2012 Scott CR1 Comp
Posts: 1,258
Carbon forks (at least for me) make a HUGE difference in absorbing road "buzz".
deep_sky is offline   Reply With Quote
Old 04-11-10, 02:23 PM   #10
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Quote:
Originally Posted by deep_sky View Post
Carbon forks (at least for me) make a HUGE difference in absorbing road "buzz".
Yeah, but surely not through the back end! Either way this has lead to me having buy new drop bars (as my road ones are a bit too wide!) as I really do find it gives a lovely ride, and want it as a good alternative to my commuter sometimes!

When the 35mm tyres wear out I will be getting some marathon ones as they can take a lower pressure - these specialized nimbus ones need at least 75psi according to the sidewall!

This has somewhat changed my view of my next bike though, I was going to go with a MTB frame and balloon tyres, but perhaps a Cyclocross frame and fat tyres would be as good (perhaps better due to fit etc.)

Thanks Barracks, I had thought the rack would do something - I suppose if I get bored one day I can put a rack on my road bike (it used to have one - and I don't remember the ride being this good!) and see if it makes a difference, however I don't think I will be that bored any time soon!

Unfortunately I need the rack for commuting - don't like a sweaty back!
daven1986 is offline   Reply With Quote
Old 04-11-10, 02:55 PM   #11
njkayaker
Senior Member
 
Join Date: Sep 2007
Bikes:
Posts: 9,429
Quote:
Originally Posted by tntyz View Post
I notice the same thing. Had a compressed nerve in my upper back and found that riding the hybrid really hurt after a while. On hybrid I sit much more upright and every bump was helping to compress my spine. On the road bike I'm more stretched out and the bumps are absorbed by muscles and joints flexing.

Who says that hybrids have to be more comfortable than road bikes?
Your different posture explains a lot. On the road bike, you are supporting some of your weight using your arms. Sitting upright puts all of the weight on your seat. And it's harder/slower to get off of the seat to react to bumps.

Good road bike riders ride in such a way so that they can react to bumps quicker.

Quote:
Originally Posted by deep_sky View Post
Carbon forks (at least for me) make a HUGE difference in absorbing road "buzz".
"Road buzz" isn't bumps.
njkayaker is online now   Reply With Quote
Old 04-11-10, 09:14 PM   #12
tatfiend 
Gear Hub fan
 
Join Date: Nov 2008
Location: Reno, NV
Bikes: Civia Hyland Rohloff, Swobo Dixon, Colnago, Univega
Posts: 2,830
The road bike may well have a lighter frame which is absorbing the shocks and vibrations better. That, along with the carbon fiber fork, could have an effect on the ride. Take a tape measure and level and see if the bar height and reach on both bikes are the same. A more upright position on the hybrid, even with drop bars, could explain part of what you are feeling.

Also does the road bike have a CF seatpost or bars? Both reputedly can increase comfort compared to Aluminum. So can tire construction as many Hybrid bike tires have very stiff sidewalls compared to road bike tires.
__________________
Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro

Visit and join the Yahoo Geared Hub Bikes group for support and links.
http://groups.yahoo.com/group/Geared_hub_bikes/
tatfiend is offline   Reply With Quote
Old 04-12-10, 04:59 AM   #13
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
The reach and bar height is very similar on both bikes - I set the hybrid up to match the road bike. Both bikes have a CF seatpost, both have alu bars. The tyres seem to have supple side walls on both bikes, but I guess the road bike ones are a little more supple - however they are specialized armadillos which are generally pretty rigid.

Thank
daven1986 is offline   Reply With Quote
Old 04-12-10, 05:22 AM   #14
cyclezealot
Senior Member
 
cyclezealot's Avatar
 
Join Date: Sep 2001
Location: Fallbrook,Calif./Palau del Vidre, France
Bikes: Klein QP, Fuji touring, Surly Cross Check, BCH City bike
Posts: 13,166
Riding in the drops is what I find comfortable.. When ever I ride our city bike with upright handlebars is when I feel pressure on the hands and an eventual numbness. Are their guides to the correct position on city bikes.. My elbows are 90 degrees perpendicular to the handlebars. I'd think that the best position to minimize pressure points on one's hands.?
__________________
Pray for the Dead and Fight like Hell for the Living






^ Since January 1, 2012
cyclezealot is offline   Reply With Quote
Old 04-12-10, 09:10 AM   #15
rumrunn6
Senior Member
 
rumrunn6's Avatar
 
Join Date: Jul 2008
Location: 25 miles northwest of Boston
Bikes: Bottecchia Sprint
Posts: 13,809
maybe because the road bike is lighter and faster. I have Armadillos myself and find they are VERY comfortable even OVER their MAX pressure!
rumrunn6 is offline   Reply With Quote
Old 04-12-10, 09:34 AM   #16
njkayaker
Senior Member
 
Join Date: Sep 2007
Bikes:
Posts: 9,429
Quote:
Originally Posted by tatfiend View Post
The road bike may well have a lighter frame which is absorbing the shocks and vibrations better.
Road bikes are often "stiff", which means they would be less capable of absorbing shocks. "Vibrations" are a different thing.

Most of the "shock absorption" is done by the rider, most of the rest is done by the tires. (Ignoring bikes with shocks.)

Quote:
Originally Posted by cyclezealot View Post
Riding in the drops is what I find comfortable.. When ever I ride our city bike with upright handlebars is when I feel pressure on the hands and an eventual numbness. Are their guides to the correct position on city bikes.. My elbows are 90 degrees perpendicular to the handlebars. I'd think that the best position to minimize pressure points on one's hands.?
If your posture is upright, then there should be very little weight on your hands on the "city" bike.

Quote:
Originally Posted by daven1986 View Post
The reach and bar height is very similar on both bikes - I set the hybrid up to match the road bike. Both bikes have a CF seatpost, both have alu bars. The tyres seem to have supple side walls on both bikes, but I guess the road bike ones are a little more supple - however they are specialized armadillos which are generally pretty rigid.
Tires without any air are pretty floppy. It's the pressure in the tire that really provides rigidity.

Last edited by njkayaker; 04-12-10 at 09:39 AM.
njkayaker is online now   Reply With Quote
Old 04-12-10, 11:13 AM   #17
daven1986
Senior Member
Thread Starter
 
Join Date: Feb 2008
Location: UK
Bikes:
Posts: 2,324
Hmm it appears that there is no real reason for this - not to worry though, I love both the bikes and will now be using my road bike even over the poor road surfaces to work (when the weather is warmer....and not raining!!)

Thanks all
daven1986 is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 06:58 AM.