Advertise on Bikeforums.net



User Tag List

Results 1 to 11 of 11
  1. #1
    Senior Member
    Join Date
    Jul 2010
    Posts
    75
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Road Bike On Mountain Trails

    I am looking for a new bike. I want something light & fast like a road bike, but with the capability to take some beefier tires for riding on logging roads. (no hardcore mtn biking).

    Is there something out there that fits this description?

    I was looking at the Trek FX 7.3, but I've read it sucks offroad. Why is that? What would be so bad about taking it offroad?

    I read an article written a few years ago by a guy that won offroad races with a road bike. Maybe they were more heavy-duty back then.

  2. #2
    Senior Member telebianchi's Avatar
    Join Date
    Jul 2007
    My Bikes
    2014 Trek Domane 5.2, 2003 Fuji Cross, 2010 Giant Trance, 2006 K2 Mod 4.0, 2010 Schwinn Madison
    Posts
    1,222
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    It's called a cyclocross bike. Sometimes abreviated as CX. There's a whole sub-forum on BF about them. From a distance, a CX bike looks pretty much like a road bike with similar geometry, 700mm wheels and drop handlbars. Get closer, though, and you'll see space for 700x35 (or sometimes larger) tires, cantilever brakes for mud and tire clearance. Some now also come with disc brakes.

    Some examples include Fuji Cross, Specialized Tri-Cross, the late Lemond Propad. Most manufactureres have a couple in their catalog.
    May your tires or beer never be flat.

  3. #3
    Senior Member
    Join Date
    Jul 2008
    Location
    Minneapolis, MN
    Posts
    3,728
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by telebianchi View Post
    It's called a cyclocross bike. Sometimes abreviated as CX. There's a whole sub-forum on BF about them. From a distance, a CX bike looks pretty much like a road bike with similar geometry, 700mm wheels and drop handlbars. Get closer, though, and you'll see space for 700x35 (or sometimes larger) tires, cantilever brakes for mud and tire clearance. Some now also come with disc brakes.

    Some examples include Fuji Cross, Specialized Tri-Cross, the late Lemond Propad. Most manufactureres have a couple in their catalog.
    Yes, this is exactly what you're looking for. The big thing is more tire clearance for fatter tires with more tread for genuine off-roading.

  4. #4
    .
    Join Date
    May 2006
    Location
    Hillsboro, Oregon
    My Bikes
    2013 Soma ES, 89 Trek 950
    Posts
    3,633
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    "I was looking at the Trek FX 7.3, but I've read it sucks offroad. Why is that? What would be so bad about taking it offroad?"

    Depends on what they meant by offroad. Single track where you only see mountain bikes? Yes, the FX and probably any cross bike will suck because there is no suspension and the tires are skinny by mountain bike standards.

    Doing the offroad riding you're talking about doing, the FX and any cross bike would be perfectly suited for. Now, the one consideration you need to make is road riding. A cross bike is going to be much nicer than the FX simply because of the difference in handlebars. Road riding is best served by drop bars due to the numerous hand positions it provides. Plus it's much easier to get out of the wind with the drops. STI shifters are quite nice to have also.
    Demented internet tail wagging imbicile.

  5. #5
    Senior Member spooner's Avatar
    Join Date
    Jun 2010
    Posts
    241
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

  6. #6
    Senior Member
    Join Date
    Jul 2008
    Location
    Minneapolis, MN
    Posts
    3,728
    Mentioned
    3 Post(s)
    Tagged
    0 Thread(s)
    Quote Originally Posted by knobster View Post
    "I was looking at the Trek FX 7.3, but I've read it sucks offroad. Why is that? What would be so bad about taking it offroad?"

    Depends on what they meant by offroad. Single track where you only see mountain bikes? Yes, the FX and probably any cross bike will suck because there is no suspension and the tires are skinny by mountain bike standards.

    Doing the offroad riding you're talking about doing, the FX and any cross bike would be perfectly suited for. Now, the one consideration you need to make is road riding. A cross bike is going to be much nicer than the FX simply because of the difference in handlebars. Road riding is best served by drop bars due to the numerous hand positions it provides. Plus it's much easier to get out of the wind with the drops. STI shifters are quite nice to have also.
    Yeah, ditto.

    I looked up the Trek FX 7.3, and if I'm looking at the right bike -
    http://www.trekbikes.com/us/en/bikes/road/fx/73fx/

    It comes with 32c tires. That's not *great*, but you could probably fit a bigger tire on there than what it comes with.

    Like the other guy said - if you're doing "real" offroad, riding over logs and rocks, you need front suspension (ok, apparently if you're really skilled you can do without, but for most of us front suspension is a requirement).

    For your kind of riding though, you don't need front suspension at all, what you need is a fat treaded tire (most likely with some tread) that can get a grip on the loose-ish ground you're biking over. A road bike that won't take above 25c tires is out of the question (and I say this as someone who rides regularly over grass and crushed limestone bike trails) if you're riding over rocks, dirt, bumps, etc like you find on a real dirt road (or, I assume, a fire road). You need a fatter tire.

    The question is how big of a tire would your bike need to accommodate, and I'm not sure. 32's are really a little small, in my opinion. The Trek would probably take 35's, I think 35c is pretty standard for cyclocross (which is similar to what you're doing). Though if you got a bike that could take 2" (50c) tires you really, really wouldn't have to worry about it.

    Perhaps someone else could comment who actually rides fire roads?

  7. #7
    Packfodding 3 caloso's Avatar
    Join Date
    Jul 2002
    Location
    Sacramento, California, USA
    My Bikes
    Ridley Excalibur, Gazelle Champion Mondial, On-One Pompino, Specialized Rock Hopper
    Posts
    29,446
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I rode my CX bike around Burton Creek SP (above Tahoe City) this weekend with my son. 35mm knobbies. Did super fine on the dirt.
    Cyclists of the world, unite! You have nothing to lube but your chains!

  8. #8
    Senior Member mijome07's Avatar
    Join Date
    Sep 2007
    Location
    Riverside, So Cal
    Posts
    1,378
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Check this out:




  9. #9
    Junior Member
    Join Date
    Sep 2011
    Posts
    10
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Adapting road bike for grass, dirt

    I have a related question. I plan to do a lot of camping this summer. I'll be pulling a cargo trailer I converted into a simple RV, so I have room to pack a bike. I have a couple road bikes, and want something I can also ride a bit on hard packed dirt and grass. A CX would likely be perfect, but rather than buy a 3d bike (actually a 4th) I thought I'd put some 28 tires on my rims (or have two sets of wheels, one with 700 x 23, the other with 28 or wider, knobby but ok for the road and relatively puncture resistant.

    I'd like your thoughts. I have a compact double and a triple. I'm assuming the triple would be better for dual purpose. I've done a little experimenting, riding on grass, and the only thing I notice is the friction is WAY increased, need more lower gears.

  10. #10
    Senior Member
    Join Date
    Jan 2012
    Location
    Denver, CO
    My Bikes
    2012 Specialized Crux, Schwinn Mesa
    Posts
    564
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    I ride a crux (cyclocross bike) and I did some gravel trails that were muddy and stuff just last week. My crux is running 33's on it. The tires are a small knob type tread. Most cyclocross bikes should take between 32 to 38mm tires.

  11. #11
    Senior Member TacomaSailor's Avatar
    Join Date
    May 2005
    Location
    Tacoma WA & San Diego CA
    My Bikes
    Specialized Roubaix road bike, Stumpjumper Comp hardtail, Trance X2 FS mountainbike
    Posts
    249
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    A guy in Utah bought my 1984 Klein Performance aluminum frame touring bike and converted it into a fireroad/double track touring bike. It had room for 35c tires and a long chainstay for real stable load carrying. The original frame had eyelets for rear panniers and the fork I had put on had eyelets for front panniers.

    The bike had all Campy Chorus running gear and a triple crank. I'm not sure what wheels or handlebar he used.

    I heard from him a year later and he was very happy with the conversion. He had done a number of 4 - 6 day tours in Utah and Colorado - all off road. He carried about 35 - 45 pounds and had no problems with traction or durability.

    I, and then my wife, had been riding the Klein for over 24 years and a lot of miles, when I sold the bike.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •