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


Go Back   > >

Recreational Cyclocross and Gravelbiking This has to be the most physically intense sport ever invented. It's high speed bicycle racing on a short off road course or riding the off pavement rides on gravel like :The Dirty Kanza". We also have a dedicated Racing forum for the Cyclocross Hard Core Racers.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 06-18-12, 09:28 PM   #1
TomJL
Member
Thread Starter
 
Join Date: Jun 2009
Bikes: 2009 Bianchi Vigorelli, 2004 Jamis Dakota XC, Surly Crosscheck
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
20/24 Wheels for Cross

Hello,

I'm 190 pounds and looking for some new wheels for my Crosscheck (which will be set up as a 1x9). I want to try cross racing and plan on using the bike for gravel/minimum maintenance road rides. I'm looking at a set of Easton EA50's with 20/24 spoke count.

Question 1: Are these wheels up to the task for cross?

Question 2: I currently have a set of Shimano R500's on my road bike. Would I be better off putting the EA50's on the road bike and swapping the Shimano's to the cross bike?

Question 3: Would I be limited by either of these wheels in terms of cross tire size?

Thanks,
Tom
TomJL is offline   Reply With Quote
Old 06-18-12, 09:36 PM   #2
Fat Boy
Wheelsuck
 
Fat Boy's Avatar
 
Join Date: Jun 2007
Bikes:
Posts: 6,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
1. Probably. I'd call Easton and ask. At 190#, you might be a bit on the heavy side for them.
2. Yes
3. Yes and no. The EA50's are a relatively narrow rim. You can get tires on there, so they wouldn't really limit you, but a wider rim would work better.
Fat Boy is offline   Reply With Quote
Old 06-18-12, 10:21 PM   #3
TomJL
Member
Thread Starter
 
Join Date: Jun 2009
Bikes: 2009 Bianchi Vigorelli, 2004 Jamis Dakota XC, Surly Crosscheck
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Fat Boy,

A few follow-up questions. What makes the Shimano's better for cross? They are also a 20/24 spoke count wheel.

Also, what would be the advantage of having the wider rim? Just a greater air volume in the tire? Is there any issue with putting wider tires on narrower rims?

Thanks for the help.
TomJL is offline   Reply With Quote
Old 06-18-12, 11:03 PM   #4
Fat Boy
Wheelsuck
 
Fat Boy's Avatar
 
Join Date: Jun 2007
Bikes:
Posts: 6,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by TomJL View Post
Fat Boy,

A few follow-up questions. What makes the Shimano's better for cross? They are also a 20/24 spoke count wheel.

Also, what would be the advantage of having the wider rim? Just a greater air volume in the tire? Is there any issue with putting wider tires on narrower rims?

Thanks for the help.
I tend to use my heavier/not as nice stuff for cross and my fancier stuff for road. I assumed the Shimano's had a higher spoke count, I guess they don't. Anyway, that's why I said the Shimano's for cross. They may get knocked out of true easier, I don't know. I believe the Eastons are relatively stable wheels.

A wider rim gives the tire a better shape and has more air volume (both are a relatively big deal). You can get a 35/38 tire on a 15mm inside width rim. It just might be a little snug, but it'll be fine. These rims were designed for no more than maybe a 28, but I don't think it'll matter.
Fat Boy is offline   Reply With Quote
Old 06-20-12, 03:31 PM   #5
jroth
Senior Member
 
Join Date: Apr 2005
Bikes:
Posts: 194
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Gee, at 190 pounds and planning to race, I'd suggest a bigger spoke count. The bike takes a beating when you race.
jroth is offline   Reply With Quote
Old 06-20-12, 04:53 PM   #6
flargle
Senior Member
 
Join Date: Jul 2007
Bikes:
Posts: 2,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
In both cases, the rims are quite stout. They are standard road rims, meaning they'll do fine with cross tires.
flargle is offline   Reply With Quote
Old 06-20-12, 05:45 PM   #7
TomJL
Member
Thread Starter
 
Join Date: Jun 2009
Bikes: 2009 Bianchi Vigorelli, 2004 Jamis Dakota XC, Surly Crosscheck
Posts: 27
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by flargle View Post
In both cases, the rims are quite stout. They are standard road rims, meaning they'll do fine with cross tires.
Do you think the stout rim makes up for a lower spoke count? I've been riding the 20/24 Shimano's on my road bike for ~2 years now and haven't had to true them once.
TomJL is offline   Reply With Quote
Old 06-20-12, 07:14 PM   #8
adam_mac84
Senior Member
 
Join Date: Dec 2009
Bikes:
Posts: 614
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I race at 195. I use 32 spoke wheels... never had a problem, never had an inkling to try something lower. Have you built wheels? I built up a set of major tom's with bikehubstore hubs, 1530g/set, and can't bust em
adam_mac84 is offline   Reply With Quote
Old 06-20-12, 07:51 PM   #9
Fat Boy
Wheelsuck
 
Fat Boy's Avatar
 
Join Date: Jun 2007
Bikes:
Posts: 6,158
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by flargle View Post
In both cases, the rims are quite stout. They are standard road rims, meaning they'll do fine with cross tires.
While the terrain of CX is rough, you have the advantage of a big tire sidewall and low pressures. In some ways I think it might be easier on the wheel than a high pressure road bike tire hitting a pot hole.

Minor thread hi-jack. If you run disc brakes should you run the same spoke count front and rear, or can the front still have fewer spokes?
Fat Boy is offline   Reply With Quote
Old 06-21-12, 09:01 AM   #10
flargle
Senior Member
 
Join Date: Jul 2007
Bikes:
Posts: 2,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by TomJL View Post
Do you think the stout rim makes up for a lower spoke count?
Yes. The stronger the rim, the greater distance you can have between spokes. That is why deep carbon rims can get away with very low spoke counts.
flargle is offline   Reply With Quote
Old 06-21-12, 10:50 AM   #11
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 19,683
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 452 Post(s)
Keep a spare set of wheels in the pits, Or just a second bike , Quick swap,
should they be damaged.
fietsbob is online now   Reply With Quote
Old 06-21-12, 01:15 PM   #12
flargle
Senior Member
 
Join Date: Jul 2007
Bikes:
Posts: 2,118
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Quote:
Originally Posted by Fat Boy View Post
If you run disc brakes should you run the same spoke count front and rear, or can the front still have fewer spokes?
In Jobst Brandt's book he has figures showing how the load on spokes from drive torque is minimal compared with simply supporting rider weight. If I extrapolate that to brake load on a front wheel, I don't see any reason to add spokes.

OTOH Volagi sells their bikes with equal spokes (24) per wheel, so WTF do I know?
flargle 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 11:18 AM.