I know, you thought I was going to go somewhere different with this - sorry to dissapoint.
So, I’m doing my first tri this weekend - out of the water with the front pack, on the bike and off… I notice at about mile 9 that I’m suddenly being passed by some obviously experienced riders - and I’m not going (in my mind) slow.
Suddenly - a flat - totally sucks!!! So, at mile 14 I’m trying to get my tube off and reload - and realize that (and, yes, my fault) I left my spare at the transition. Sometimes, though, people surprise you, and several stopped (actually STOPPED) to ask if I needed help - One rider gave me her spare tube and pump, and I was so thankful.
Here comes my question:
Her tube was too big for my wheel - turns out, I ride on a 22 and seems most have more like a 27 or so - DOES THAT MAKE A SPEED DIFFERENCE?? All else equal, am I working harder to go the same speed as others because my wheel is smaller?
I’m such a newbie here - I’d be embarrased to even ask this question, but you gotta’ start somewhere, right??
Thanks for your feedback - follow up questions for anyone willing!!!
I don’t know if this is a trick question or not, but I assume you are talking about tire width, crorrect? If so, in this case a thinner tire (22mm) will be faster faster than a wider (27mm) tire. Unless of course it has dimples, then only god knows…
Perhaps what we’re looking at here is a case of the tire being fast, but the rider maybe not being so?
What I found is that the tube circumference of the spare that was given to me was much larger than the wheel I was using. One guy told me that “I have a very low profile wheel” - what’s that mean?? I was wondering more about rim size rather than tire width.
A thinner tire does not have less rolling resistance than a wider tire. In fact, most 23’s have lower rolling resistance than 19’s or 20’s of the same brand.
That’s not saying that a wider tire is allways faster. Some rims are designed for 20’s and aerodynamically, a 20 is faster on most front rims. There are exceptions where 23’s are faster.
I will modify my post to remove some unclear verbiage, but in this case if you can prodcue data that shows a wider tire (27) is faster than a thinner tire (23) I’ll switch my tires this afternoon and mail you everytyhing I have…
Not my point at all…The OP was speaking of a 22 vs. a 27 and that was where my commments were based. You started babbling about the 21 vs 23 RR debate in an effort to point out something wrong, but my comments were focused upon what he was asking.
I think a lot of people here are mixed up. You put a 27 tube in your 22 tire? Yes that will work fine (as you noticed) NO there will not be a speed difference in you bike because of this as the outside is still the same.
Congratulations on your race. Next time it will be your turn to stop for someone.
CDN - I didn’t put the tube on, because I noticed it was was too big (there was a lot of extra material left after I wrapped the tube around the wheel - I had an appropriate replacement in the transition area (yeah, doesn’t do me much good).
I was simply wondering - Does the circumference of a wheel make a speed difference (all else equal)?
Why is it that ST’ers always poin tout what is wrong with someone’s response, rather than focusing on the post itself. You entire response told me how wrong I was and didn’t help the OP at all. I realized I was wrong and fixed it, yet you’ve not offered one whit of advive to the OP.
CDN - I didn’t put the tube on, because I noticed it was was too big (there was a lot of extra material left after I wrapped the tube around the wheel - I had an appropriate replacement in the transition area (yeah, doesn’t do me much good).
I was simply wondering - Does the circumference of a wheel make a speed difference (all else equal)?
Thanks so much,
Scott
Yep, I hear ya … depending on the tire width and brand, sometimes I can put a 19-23mm tube in the tire … but, usually I can’t put a 23-27mm tube in it, as the width of the 20-21mm tire is too thin … although, I could put a 19-23mm tube in a 25-27mm tire, those may experience a blow-out if I try to pump it up to the max …
Are you saying that you ride 650cc wheels and someone gave you a tube for a 700 wheel? In other words, was the diameter of your wheels smaller than the diameter of the other rider’s wheels?
Basically, YES!!! Thank you for addressing the question!!! I actually have a 700cc wheel - but the tube was for a larger wheel - does the larger diameter make any difference??
Basically, YES!!! Thank you for addressing the question!!! I actually have a 700cc wheel - but the tube was for a larger wheel - does the larger diameter make any difference??
Thanks, donm!!
yep
me thinks it was a hypbrid tube (25-32mm tubie) you tried to stuff in a road tire that takes 18-23mm tubies … try to visualize a size 37 person trying to fit into a size 31 clothing …
kidding.