Poor roads - wheel and tire set-up for more comfort
03-28-10, 07:42 AM
#1
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Thread Starter
Poor roads - wheel and tire set-up for more comfort
The roads are quite poor where I live, especially after a hard winter and I need advice on how to set up my wheels for a little more comfort.
I have a Tommasini with 22c Veloflex Pave clinchers and Ambrosio Prisma Elite Durex wheels. Great... sorry, make that GREAT... bike, but a hard ride on these poor roads.
I tried my other wheelset - Mavic Open Pro's with Continental 4 Seasons 25c's and the bike was sooooooo much more comfortable - and only a little less lively.
My questions:
Could I get more comfort from the 22c's by reducing the pressure - if so, how low do I go? (I'm 90kg)
Should I just swap the Veloflex's for the Conti's and rely on the extra volume to give me the comfort?
How much, if anything, are the super-light Ambrosio rims contributing to the hard ride?
Have you any other suggestions on how I can keep a good feel, but increase comfort a little?
BTW. I bought the Veloflex 22's because they have traditional tan sidewalls that suit the bike.
Thanks.
I have a Tommasini with 22c Veloflex Pave clinchers and Ambrosio Prisma Elite Durex wheels. Great... sorry, make that GREAT... bike, but a hard ride on these poor roads.
I tried my other wheelset - Mavic Open Pro's with Continental 4 Seasons 25c's and the bike was sooooooo much more comfortable - and only a little less lively.
My questions:
Could I get more comfort from the 22c's by reducing the pressure - if so, how low do I go? (I'm 90kg)
Should I just swap the Veloflex's for the Conti's and rely on the extra volume to give me the comfort?
How much, if anything, are the super-light Ambrosio rims contributing to the hard ride?
Have you any other suggestions on how I can keep a good feel, but increase comfort a little?
BTW. I bought the Veloflex 22's because they have traditional tan sidewalls that suit the bike.
Thanks.
03-28-10, 07:47 AM
#2
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Larger tires = more comfort in my ride.
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Fred "The Real Fred"
Fred "The Real Fred"
03-28-10, 08:09 AM
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Its those tires. They are pretty small so going with a larger tire will give you more comfort
03-28-10, 08:42 AM
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Could I get more comfort from the 22c's by reducing the pressure - if so, how low do I go?
03-28-10, 12:11 PM
#5
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Thread Starter
I went out today after posting the question and it was painful after about 25 miles. I'm running the Veloflex's at 90psi - I'd hate to reduce the pressure even more, so I guess I'll go with the bigger tyres (sorry, tires!).
Out of interest - any mathematicians who know the difference in volume between a 22c and 25c?
Out of interest - any mathematicians who know the difference in volume between a 22c and 25c?
03-28-10, 12:18 PM
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very timely thread. some of the roads i ride on have turned from smooth velvet to rough washboard over the winter and i can barely ride over them without fearing for my wheels.
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coasting, few quotes are worthy of him, and of those, even fewer printable in a family forum......quote 3alarmer
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03-28-10, 12:23 PM
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this is why I love my CX bike.
just pop in some 700x35mm panaracer paselas in them, and the added comfort is amazing.
PS. your tires will have an ideal pressure for your weight.
just pop in some 700x35mm panaracer paselas in them, and the added comfort is amazing.
PS. your tires will have an ideal pressure for your weight.
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
03-28-10, 12:58 PM
#9
aka Phil Jungels
Boy, have I been waiting for this thread....... LOL
You need a "Hybrid" ---- with some of those big, fat, 35, 40, or 45's , spinning on them hubs......... Get the right bike for the job !!!!!
p.s. You're welcome on the Hybrid Forum, any time........
You need a "Hybrid" ---- with some of those big, fat, 35, 40, or 45's , spinning on them hubs......... Get the right bike for the job !!!!!
p.s. You're welcome on the Hybrid Forum, any time........
03-28-10, 01:17 PM
#10
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Thread Starter
Ha! Cyclocross... hybrids... as soon as I sell my Pinarello I'll be after a Cannondale CX9, but the Tommasini is going nowhere - that one's for life.
28c won't fit - 25c is pretty tight to the seat tube.
Comfort-wise the 25c seems a massive difference to the 22c... hence the question about volume.
28c won't fit - 25c is pretty tight to the seat tube.
Comfort-wise the 25c seems a massive difference to the 22c... hence the question about volume.
03-28-10, 01:22 PM
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also make sure you're not over inflating the tire
Originally Posted by psimet's tip of the day
Tire Width=20: Pressure(psi) = (0.33 * Rider Weight in lbs) + 63.33
Tire Width=23: Pressure(psi) = (0.33 * Rider Weight in lbs) + 53.33
Tire Width=25: Pressure(psi) = (0.33 * Rider Weight in lbs) + 43.33
Tire Width=28: Pressure(psi) = (0.33 * Rider Weight in lbs) + 33.33
Tire Width=32: Pressure(psi) = (0.17 * Rider Weight in lbs) + 41.67
Tire Width=37: Pressure(psi) = (0.17 * Rider Weight in lbs) + 26.67
Example: You are 150lbs running 28's
Pressure (psi) = (0.33*150) +33.33 = 82.83psi (rear)
Front Pressure = .9*Rear Pressure = .9*82.83psi = 74.55psi front
Tire Width=23: Pressure(psi) = (0.33 * Rider Weight in lbs) + 53.33
Tire Width=25: Pressure(psi) = (0.33 * Rider Weight in lbs) + 43.33
Tire Width=28: Pressure(psi) = (0.33 * Rider Weight in lbs) + 33.33
Tire Width=32: Pressure(psi) = (0.17 * Rider Weight in lbs) + 41.67
Tire Width=37: Pressure(psi) = (0.17 * Rider Weight in lbs) + 26.67
Example: You are 150lbs running 28's
Pressure (psi) = (0.33*150) +33.33 = 82.83psi (rear)
Front Pressure = .9*Rear Pressure = .9*82.83psi = 74.55psi front
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
03-28-10, 05:07 PM
#12
Senior Member
Here is a handy chart from Rivendell Bicycle Works 
https://www.rivbike.com/assets/full/0...ick_a_tire.pdf
https://www.rivbike.com/assets/full/0...ick_a_tire.pdf
03-28-10, 05:12 PM
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Here is a handy chart from Rivendell Bicycle Works
https://www.rivbike.com/assets/full/0...ick_a_tire.pdf
https://www.rivbike.com/assets/full/0...ick_a_tire.pdf
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Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
03-28-10, 05:39 PM
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It's not the size of the tire; It's the air pressure. Everything else equal larger tires allow lower pressure, and therefore increase comfort. But it's more a function of ari pressure than tire size.
For example, a 25c tire at 120 psi is going to be more uncomfortable than a 23c at 100 psi.
Likely, and the charts are good starting point, but just a guide. The issue is at what pressure do you start getting pinch flats, and some people are lighter on their tires than others. That said I bet you can easily ride 22c tires at 100psi without excessive pinch flats. maybe lower if you're light on your tires.
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You could get lost and die.
You could hit a tree and die.
OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.
03-28-10, 05:40 PM
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03-29-10, 02:25 AM
#17
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It was an ironic apology... every now and then I like to make the point! 
03-29-10, 02:34 AM
#18
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I'm not so sure about that. A wider tyre has more surface in contact with the road, to aggregate the little impacts more effectively. At equal pressures, I'd have thought the extra volume in a bigger tyre would also absorb the impacts more effectively... spreading the impact (in all directions within the tube) through a bigger volume of air.
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