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Dumb Question - Road Wheel Basics(7 posts)

Dumb Question - Road Wheel Basicsmc7569
Jun 21, 2001 10:07 AM
Sorry for the stupidity but could someone please give me that basics on this. 700C compared to 650C. Also whats the difference with x 20 or 23 etc... I think that would be the width of the tire? Whats the standard to buy? Whats the difference between Clinchers and Tubular?
Kind of new at this so all help would be great. Thank you.
re: Dumb Question - Road Wheel BasicsMeDotOrg
Jun 21, 2001 10:58 AM
For a good source of bicycle terminology, it's hard to beat Sheldon Brown's website:
No such thing......Len J
Jun 21, 2001 11:08 AM
as a dumb question, only a dumb answer. Hope I don't fit in that catagory. Here goes:
1) 700 vs 650 refers to wheel circumfrence, 700 is a slightly larger wheet (around). 650's are mainly used for Triathelon (SP) more aero since smaller. Most/road bikes use 700

2) 20 vs 23 refers to width of tire. 20 is Narrower, less rolling resistance but also seem to be less flat resistant (more flats). Most training tires are 23's, touring can get bigger. 23 or 25 is most prevelant in road riding.

3) Clinchers vs Tubulars. Clinchers have two metal or Kevlar beads wrapped in rubber around the rim side of the tire, which "clinch" under air pressure into grooves in the rim. These make it much easier to change a flat, as you just fully deflate tube, remove tire from rim, take tube out of tire, replace tube & then reverse process. Tubulars are tires that fully encase the tube & are glued to the rim. I think you see the difference. Tubulars are somewhat lighter in weight and are mainly used in racing.

Hope this helps, BTW if you really want to learn about your bike I would buy "Zinn and the art of road bike maintenance" a great book that answers some of the basic questions as well as how to do maintenance on your bike. It is arranged in such a way that it identifies easy repairs from more complex repairs. IMHO a must for any roadie.

Good riding. Hope this helps.
re: Dumb Question - Road Wheel BasicsCFVeloDan
Jun 21, 2001 11:36 AM
Clinchers are the standard tube and tire setup. Tubulars are the tube and tire is one piece and it glues to the rim.
Good job CFVeloDan...Canidraftyou
Jun 21, 2001 2:05 PM
For a dumb question, which there is no such thing, people were having a hard time explaining it...LOL. If I should have a question, I'll save it for you.

unless you are really shortColnagoFE
Jun 21, 2001 1:18 PM
get a 700c wheel. 650s are only for TTs (maybe) and shorter riders on smaller frames IMHO. They ride rougher, and are harder to find tires and tubes for.
re: Dumb Question - THANKS EVERYONE!mc7569
Jun 21, 2001 3:37 PM
Thanking everyone for the info, now it make some sense to me.