29'er vs 700c
06-21-12 | 04:19 PM
#1
Thread Starter
Newbie
Joined: Oct 2010
Posts: 24
Likes: 0
From: virginia beach, va
Bikes: cannondale optimo disc 2
29'er vs 700c
I was wondering if they were the same size. I ride a cross bike equipped with discs and road rims with disc hubs kinda hard to find. Other suggestions also accepted.
06-21-12 | 04:21 PM
#2
Senior Member
Joined: Aug 2011
Posts: 22,676
Likes: 2,643
From: CID
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Same rims, bigger tires on the "29'er" -- it's just marketing.
06-21-12 | 04:21 PM
#3
Really Old Senior Member
Joined: Feb 2007
Posts: 14,685
Likes: 1,921
From: Mid Willamette Valley, Orygun
Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3
Rim diameter is the same.
29'er tires are so much fatter, they get close to 29" diameter.
Rim will be WIDER for a 29'er than a road bike.
29'er tires are so much fatter, they get close to 29" diameter.
Rim will be WIDER for a 29'er than a road bike.
06-21-12 | 04:27 PM
#4
Senior Member
Joined: Oct 2007
Posts: 5,773
Likes: 105
From: West Yorkshire, United Kingdom
There the same size (diameter), 700c wheels will normally be much narrower than 29er wheel as 700c is used to describe wheels on road bikes, with 23-28mm tires, where as 29ers will have 2.1-2.4 tires (gota love imperial and metric measurements being mixed up for bike terminology)
The biggest difference between a 700c and 29er wheel will be a 700c has a 130mm OLD hub & rim brakes, and has a 135mm / 142.5 OLD rear hub for discs, but expect both of these to change in the next few years, with road bikes getting disc brakes, and MTB's getting wider (bolt through) rears.
Would check the spacing on your frame, as if you currently have a disc specific frame, it probably has either a 132.5 or 135mm spacing.
The biggest difference between a 700c and 29er wheel will be a 700c has a 130mm OLD hub & rim brakes, and has a 135mm / 142.5 OLD rear hub for discs, but expect both of these to change in the next few years, with road bikes getting disc brakes, and MTB's getting wider (bolt through) rears.
Would check the spacing on your frame, as if you currently have a disc specific frame, it probably has either a 132.5 or 135mm spacing.
06-21-12 | 04:28 PM
#5
Senior Member
Joined: Jun 2007
Posts: 12,257
Likes: 5
From: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
29'er rims are designed to accommodate wider tires without having to worry about the tyre rolling off.
As a trade off, you might not be able to use narrower tyres.
https://www.schwalbetires.com/tech_in...dimensions#rim
note that rim width is measured from the inside.
If you measure from the outside, subtract 5.5mm, which gives an approximate result.
As a trade off, you might not be able to use narrower tyres.
https://www.schwalbetires.com/tech_in...dimensions#rim
note that rim width is measured from the inside.
If you measure from the outside, subtract 5.5mm, which gives an approximate result.
__________________
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
06-21-12 | 04:39 PM
#6
Banned
Joined: Jun 2010
Posts: 43,586
Likes: 1,380
From: NW,Oregon Coast
Bikes: 8
the hub width is likely a 135, on the frame since there are lots of disc cassette hubs .
the companies go with the best price parts pick.
so 622 rims, 135/100 hubs you're good to go..
cross /dual sport tires are about 35 wide
Road bikes are narrow tires.. 23 common.. then the rim is narrower.
the companies go with the best price parts pick.
so 622 rims, 135/100 hubs you're good to go..
cross /dual sport tires are about 35 wide
Road bikes are narrow tires.. 23 common.. then the rim is narrower.
06-21-12 | 07:17 PM
#7
Senior Member
Joined: Dec 2007
Posts: 3,518
Likes: 40
From: San Jose, California
Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
29'er
Just 700c with a new marketing label...that's all.
=8-)
Just 700c with a new marketing label...that's all.
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
Thread
Thread Starter
Forum
Replies
Last Post
suburbanbeat
Touring
33
11-14-16 07:52 PM
hornedfrog1985
Clydesdales/Athenas (200+ lb / 91+ kg)
4
02-27-10 07:57 PM
